2016-06673. Takes of Marine Mammals Incidental to Specified Activities; Seabird Monitoring and Research in Glacier Bay National Park, Alaska, 2016

AGENCY:

National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), Commerce.

ACTION:

Notice; proposed incidental harassment authorization; request for comments.

SUMMARY:

NMFS (hereinafter, “we” or “our”) received an application from Glacier Bay National Park (Glacier Bay NP) requesting an Incidental Harassment Authorization (Authorization) to take marine mammals, by harassment, incidental to conducting proposed seabird monitoring and research activities within Glacier Bay National Park from May through September, 2016. Per the Marine Mammal Protection Act, we request comments on our proposal to issue an Authorization to Point Blue to incidentally take, by Level B harassment only, one species of marine mammal, the harbor seal (Phoca vitulina) during the specified activity.

DATES:

NMFS must receive comments and information no later than April 25, 2016.

ADDRESSES:

Address comments on the application to Jolie Harrison, Chief, Permits and Conservation Division, Office of Protected Resources, National Marine Fisheries Service, 1315 East-West Highway, Silver Spring, MD 20910. The mailbox address for providing email comments is [e-mail]. You must include 0648-XE503 in the subject line. We are not responsible for email comments sent to addresses other than the one provided here. Comments sent via email, including all attachments, must not exceed a 25-megabyte file size. NMFS is not responsible for email comments sent to addresses other than the one provided here.

Instructions: All submitted comments are a part of the public record and NMFS will post them to http://www.nmfs.noaa.gov/​pr/​permits/​incidental/​research.htm without change. All Personal Identifying Information (for example, name, address, etc.) voluntarily submitted by the commenter may be publicly accessible. Do not submit confidential business information or otherwise sensitive or protected information.

To obtain an electronic copy of the renewal request, application, our Environmental Assessment (EA), or a list of the references, write to the previously mentioned address, telephone the contact listed here (see FOR FURTHER INFORMATION CONTACT), or visit the internet at: http://www.nmfs.noaa.gov/​pr/​permits/​incidental/​research.htm.

Information in Glacier Bay NP's application, NMFS' EA, and this notice collectively provide the environmental information related to proposed issuance of the Authorization for public review and comment.

FOR FURTHER INFORMATION CONTACT:

Robert Pauline, NMFS, Office of Protected Resources, NMFS [phone].

SUPPLEMENTARY INFORMATION:

Background

Sections 101(a)(5)(A) and (D) of the Marine Mammal Protection Act of 1972, as amended (MMPA; 16 U.S.C. 1361 et seq.) direct the Secretary of Commerce to allow, upon request, the incidental, but not intentional, taking of small numbers of marine mammals of a species or population stock, by U.S. citizens who engage in a specified activity (other than commercial fishing) within a specified geographical region if, after NMFS provides a notice of a proposed authorization to the public for review and comment: (1) NMFS makes certain findings; and (2) the taking is limited to harassment.

An Authorization for incidental takings for marine mammals shall be granted if NMFS finds that the taking will have a negligible impact on the species or stock(s), will not have an unmitigable adverse impact on the availability of the species or stock(s) for subsistence uses (where relevant), and if the permissible methods of taking and requirements pertaining to the mitigation, monitoring, and reporting of such taking are set forth. NMFS has defined “negligible impact” in 50 CFR 216.103 as “an impact resulting from the specified activity that cannot be reasonably expected to, and is not reasonably likely to, adversely affect the species or stock through effects on annual rates of recruitment or survival.”

Summary of Request

On January 12, 2016, NMFS received an application from Glacier Bay NP requesting taking by harassment of marine mammals, incidental to conducting monitoring and research studies on glaucus-winged gulls (Larus glaucescens) within Glacier Bay National Park and Preserve in Alaska. We considered the renewal request for the 2016 activities as adequate and complete on February 25, 2016. NMFS previously issued two Authorizations to Glacier Bay NP for the same activities in 2014 and 2015 (79 FR 56065, September 18, 2014 and 80 FR 28229, May 18, 2015).

For the 2016 research season, Glacier Bay NP again proposes to conduct ground-based and vessel-based surveys to collect data on the number and distribution of nesting gulls within five study sites in Glacier Bay, AK. The proposed activities would occur over the course of five months, from May through September, 2016.

The following aspects of the proposed seabird research activities have the potential to take marine mammals: Acoustic stimuli from noise generated by motorboat approaches and departures; noise generated by researchers while conducting ground surveys; and human presence during the monitoring and research activities. Harbor seals hauled out in the five research areas may flush into the water or exhibit temporary modification in behavior and/or low-level physiological effects (Level B harassment). Thus, Glacier Bay NP has requested an authorization to take 500 harbor seals by Level B harassment only. Although Steller sea lions (Eumetopias jubatus) may be present in the action area, Glacier Bay NP has proposed to avoid any site used by Steller sea lions.

To date, we have issued two, five-month Authorizations to Glacier Bay NP for the conduct of the same activities in 2014 and 2015 (79 FR 56065, September 18, 2014 and 80 FR 28229, May 18, 2015). This is Glacier Bay NP's third request for an Authorization. Their 2015 Authorization expired on September 30, 2015 and the monitoring report associated with the 2015 Authorization is available at www.nmfs.noaa.gov/​pr/​permits/​incidental/​research.htm. The report provides additional environmental information related to proposed issuance of this Authorization for public review and comment.

Description of the Specified Activity

Overview

Glacier Bay NP proposes to identify the onset of gull nesting; conduct mid-season surveys of adult gulls, and locate and document gull nest sites within the following study areas: Boulder, Lone, and Flapjack Islands, and Geikie Rock. Each of these study sites contains harbor seal haulout sites and Glacier Bay NP proposes to visit each study site up to five times during the research season.

Glacier Bay NP must conduct the gull monitoring studies to meet the requirements of a 2010 Record of Decision for a Legislative Environmental Impact Statement (NPS, 2010) which states that Glacier Bay NP must initiate a monitoring program for the gulls to inform future native egg harvests by the Hoonah Tlingit in Glacier Bay, AK. Glacier Bay NP actively monitors harbor seals at breeding and molting sites to assess population trends over time (e.g., Mathews & Pendleton, 2006; Womble et al., 2010). Glacier Bay NP also coordinates pinniped monitoring programs with NMFS' National Marine Mammal Laboratory and the Alaska Department of Fish & Game and plans to continue these collaborations and sharing of monitoring data and observations in the future.

Dates and Duration

Glacier Bay NP proposes to conduct the proposed activities from the period of May through September, 2016. Glacier Bay NP proposes to conduct a maximum of three ground-based surveys per each study site and a maximum of two vessel-based surveys per each study site.

Thus, the proposed Authorization, if issued, would be effective from May 1, 2016 through September 30, 2016. NMFS refers the reader to the Detailed Description of Activities section later in this notice for more information on the scope of the proposed activities.

Specified Geographic Region

The proposed study sites would occur in the vicinity of the following locations: Boulder, Lone, and Flapjack Islands, and Geikie Rock in Glacier Bay, Alaska. Glacier Bay NP will also conduct studies at Tlingit Point Islet located at 58°45′16.86″ N.; 136°10′41.74″ W.; however, there are no reported pinniped haulout sites at that location.

Detailed Description of Activities

Glacier Bay NP proposes to conduct: (1) Ground-based surveys at a maximum frequency of three visits per site; and (2) vessel-based surveys at a maximum frequency of two visits per site from the period of May 1 through September 30, 2016.

Ground-Based Surveys: These surveys involve two trained observers visiting the largest gull colony on each island to: (1) Obtain information on the numbers of nests, their location, and contents (i.e., eggs or chicks); (2) determine the onset of laying, distribution, abundance, and predation of gull nests and eggs; and (3) record the proximity of other species relative to colony locations.

The observers would access each island using a kayak, a 32.8 to 39.4-foot (ft) (10 to 12 meter (m)) motorboat, or a 12 ft (4 m) inflatable rowing dinghy. The landing craft's transit speed would not exceed 4 knots (4.6 miles per hour (mph). Ground surveys generally last from 30 minutes to up to two hours depending on the size of the island and the number of nesting gulls. Glacier Bay NP will discontinue ground surveys after they detect the first hatchling to minimize disturbance to the gull colonies.

Vessel-Based Surveys: These surveys involve two trained observers observing and counting the number of adult and fledgling gulls from the deck of a motorized vessel which would transit around each island at a distance of approximately 328 ft (100 m) to avoid flushing the birds from the colonies. Vessel-based surveys generally last from 30 minutes to up to two hours depending on the size of the island and the number of nesting gulls.

Description of Marine Mammals in the Area of the Specified Activity

The marine mammals most likely to be harassed incidental to conducting the proposed seabird research activities within the research areas are primarily harbor seals. Table 1 in this notice provides the following information: All marine mammal species with possible or confirmed occurrence in the proposed survey areas on land; information on those species' regulatory status under the MMPA and the Endangered Species Act of 1973 (16 U.S.C. 1531 et seq.); abundance; occurrence and seasonality in the activity area.

Table 1—General Information on Marine Mammals That Could Potentially Haul Out in the Proposed Study Areas in May Through September 2016

Species	Stock name	Regulatory status 1 2	Stock/species abundance 3	Occurrence and range	Season
Harbor seal (Phoca vitulina)	Glacier Bay/Icy Strait	MMPA-NC, ESA-NL	7,210	common coastal	year-round.
Steller sea lion (Eumetopias jubatus)	Eastern U.S	MMPA-D, S, ESA-NL	60,131-74,448	uncommon coastal	year-round.
Steller sea lion (Eumetopias jubatus)	Western U.S	MMPA-D, S, ESA-T	49,497	rare coastal	unknown.
1 MMPA: D = Depleted, S = Strategic, NC = Not Classified.
2 ESA: EN = Endangered, T = Threatened, DL = Delisted, NL = Not listed.
3 2015 NMFS Draft Stock Assessment Report (Muto and Angliss, 2015).

NMFS refers the public to Muto and Angliss (2015) for additional information on the status, distribution, seasonal distribution, and life history of these species. The publications are available on the internet at http://www.nmfs.noaa.gov/​pr/​sars/​draft.htm.

Other Marine Mammals in the Proposed Action Area

Northern sea otters (Enhydra lutris kenyoni) and polar bears (Ursis maritimus) listed as threatened under the Endangered Species Act could occur in the proposed area. The U.S. Fish and Wildlife Service manages these species and NMFS does not consider them further in this notice.

Potential Effects of the Specified Activities on Marine Mammals

This section includes a summary and discussion of the ways that components of the specified activity (e.g., exposure to vessel noise and approaches and human presence), including mitigation, may impact marine mammals. The “Estimated Take by Incidental Harassment” section later in this document will include a quantitative analysis of the number of individuals that we expect Glacier Bay NP to take during this activity. The “Negligible Impact Analysis” section will include the analysis of how this specific activity would impact marine mammals. We will consider the content of the following sections: “Estimated Take by Incidental Harassment” and “Proposed Mitigation” to draw conclusions regarding the likely impacts of these activities on the reproductive success or survivorship of individuals—and from that consideration—the likely impacts of this activity on the affected marine mammal populations or stocks.

In the following discussion, we provide general background information on sound and marine mammal hearing. Acoustic and visual stimuli generated by: (1) Motorboat operations; and (2) the appearance of researchers may have the potential to cause Level B harassment of any pinnipeds hauled out on Boulder, Lone, and Flapjack Islands, and Geikie Rock. The effects of sounds from motorboat operations and the appearance of researchers might include hearing impairment or behavioral disturbance (Southall, et al., 2007).

Hearing Impairment

Marine mammals produce sounds in various important contexts—social interactions, foraging, navigating, and responding to predators. The best available science suggests that pinnipeds have a functional aerial hearing sensitivity between 75 hertz (Hz) and 75 kilohertz (kHz) and can produce a diversity of sounds, though generally from 100 Hz to several tens of kHz (Southall, et al., 2007).

Exposure to high intensity sound for a sufficient duration may result in auditory effects such as a noise-induced threshold shift—an increase in the auditory threshold after exposure to noise (Finneran, Carder, Schlundt, and Ridgway, 2005). Factors that influence the amount of threshold shift include the amplitude, duration, frequency content, temporal pattern, and energy distribution of noise exposure. The magnitude of hearing threshold shift normally decreases over time following cessation of the noise exposure. The amount of threshold shift just after exposure is called the initial threshold shift. If the threshold shift eventually returns to zero (i.e., the threshold returns to the pre-exposure value), it is called temporary threshold shift (Southall et al., 2007).

Pinnipeds have the potential to be disturbed by airborne and underwater noise generated by the small boats equipped with outboard engines (Richardson, Greene, Malme, and Thomson, 1995). However, there is a dearth of information on acoustic effects of motorboats on pinniped hearing and communication and to our knowledge there has been no specific documentation of hearing impairment in free-ranging pinnipeds exposed to small motorboats during realistic field conditions.

Behavioral Disturbance

Disturbances resulting from human activity can impact short- and long-term pinniped haul out behavior (Renouf et al., 1981; Schneider and Payne, 1983; Terhune and Almon, 1983; Allen et al., 1984; Stewart, 1984; Suryan and Harvey, 1999; Mortenson et al., 2000; and Kucey and Trites, 2006). Disturbance includes a variety of effects, including subtle to conspicuous changes in behavior, movement, and displacement. Reactions to sound, if any, depend on species, state of maturity, experience, current activity, reproductive state, time of day, and many other factors (Richardson et al., 1995; Wartzok et al., 2004; Southall et al., 2007; Weilgart, 2007). If a sound source displaces marine mammals from an important feeding or breeding area for a prolonged period, impacts on individuals and populations could be significant (e.g., Lusseau and Bejder, 2007; Weilgart, 2007).

Numerous studies have shown that human activity can flush pinnipeds off haul-out sites and beaches (Kenyon, 1972; Allen et al., 1984; Calambokidis et al., 1991; Suryan and Harvey, 1999; and Mortenson et al., 2000). And in one case, human disturbance appeared to cause Steller sea lions to desert a breeding area at Northeast Point on St. Paul Island, Alaska (Kenyon, 1962).

In 1997, Henry and Hammil (2001) conducted a study to measure the impacts of small boats (i.e., kayaks, canoes, motorboats and sailboats) on harbor seal haul-out behavior in Métis Bay, Quebec, Canada. During that study, the authors noted that the most frequent disturbances (n=73) were caused by lower speed, lingering kayaks and canoes (33.3 percent) as opposed to motorboats (27.8 percent) conducting high speed passes. The seal's flight reactions could be linked to a surprise factor by kayaks-canoes which approach slowly, quietly and low on water making them look like predators. However, the authors note that once the animals were disturbed, there did not appear to be any significant lingering effect on the recovery of numbers to their pre-disturbance levels. In conclusion, the study showed that boat traffic at current levels has only a temporary effect on the haul-out behavior of harbor seals in the Métis Bay area.

In 2004, Johnson and Acevedo-Gutierrez (2007) evaluated the efficacy of buffer zones for watercraft around harbor seal haul-out sites on Yellow Island, Washington state. The authors estimated the minimum distance between the vessels and the haul-out sites; categorized the vessel types; and evaluated seal responses to the disturbances. During the course of the seven-weekend study, the authors recorded 14 human-related disturbances which were associated with stopped powerboats and kayaks. During these events, hauled out seals became noticeably active and moved into the water. The flushing occurred when stopped kayaks and powerboats were at distances as far as 453 and 1,217 ft (138 and 371 m) respectively. The authors note that the seals were unaffected by passing powerboats, even those approaching as close as 128 ft (39 m), possibly indicating that the animals had become tolerant of the brief presence of the vessels and ignored them. The authors reported that on average, the seals quickly recovered from the disturbances and returned to the haul-out site in less than or equal to 60 minutes. Seal numbers did not return to pre-disturbance levels within 180 minutes of the disturbance less than one quarter of the time observed. The study concluded that the return of seal numbers to pre-disturbance levels and the relatively regular seasonal cycle in abundance throughout the area counter the idea that disturbances from powerboats may result in site abandonment (Johnson and Acevedo-Gutierrez, 2007).

As a general statement from the available information, pinnipeds exposed to intense (approximately 110 to 120 decibels re: 20 μPa) non-pulse sounds often leave haul-out areas and seek refuge temporarily (minutes to a few hours) in the water (Southall et al., 2007). Based on the available data, previous monitoring reports from Glacier Bay NP, and studies described here, we anticipate that any pinnipeds found in the vicinity of the proposed project could have short-term behavioral reactions to the noise attributed to motorboat operations and human presence related to the seabird research activities. We would expect the pinnipeds to return to a haul-out site within 60 minutes of the disturbance (Allen et al., 1985). The effects to pinnipeds appear at the most, to displace the animals temporarily from their haul-out sites and we do not expect that the pinnipeds would permanently abandon a haul-out site during the conduct of the proposed research.

There are three ways in which disturbance, as described previously, could result in more than Level B harassment of marine mammals. All three are most likely to be consequences of stampeding, a potentially dangerous occurrence in which large numbers of animals succumb to mass panic and rush away from a stimulus. The three situations are: (1) Falling when entering the water at high-relief locations; (2) extended separation of mothers and pups; and (3) crushing of pups by large males during a stampede. However, NMFS does not expect any of these scenarios to occur at the proposed survey sites.

Because hauled-out animals may move towards the water when disturbed, there is the risk of injury if animals stampede towards shorelines with precipitous relief (e.g., cliffs). However, while high-elevation sites exist on the islands, the haulout sites consist of ridges with unimpeded and non-obstructive access to the water. If disturbed, the small number of hauled-out adult animals may move toward the water without risk of encountering barriers or hazards that would otherwise prevent them from leaving the area.

The probability of vessel and marine mammal interactions (i.e., motorboat strike) occurring during the proposed research activities is unlikely due to the motorboat's slow operational speed, which is typically 2 to 3 knots (2.3 to 3.4 mph) and the researchers continually scanning the water for marine mammals presence during transit to the islands. Thus, NMFS does not anticipate that strikes or collisions would result from the movement of the motorboat.

In summary, NMFS does not anticipate that the proposed activities would result in the injury, serious injury, or mortality of pinnipeds because the timing of research visits would preclude separation of mothers and pups, as activities would not occur in pupping/breeding areas or if pups are present in the research areas. The potential effects to marine mammals described in this section of the document do not take into consideration the proposed monitoring and mitigation measures described later in this document (see the “Proposed Mitigation” and “Proposed Monitoring and Reporting” sections).

Anticipated Effects on Marine Mammal Habitat

NMFS does not expect the proposed research activities to have any habitat-related effects, including to marine mammal prey species, which could cause significant or long-term consequences for individual marine mammals or their populations. NMFS anticipates that the specified activity may result in marine mammals avoiding certain areas due to noise generated by: (1) Motorboat approaches and departures; (2) human presence during restoration activities and loading operations while resupplying the field station; and (3) human presence during seabird and pinniped research activities. NMFS considers this impact to habitat as temporary and reversible and considered this aspect in more detail earlier in this document, as behavioral modification. The main impact associated with the proposed activity will be temporarily elevated noise levels and the associated direct effects on marine mammals, previously discussed in this notice.

Proposed Mitigation

In order to issue an incidental take authorization under section 101(a)(5)(D) of the Marine Mammal Protection Act, we must set forth the permissible methods of taking pursuant to such activity, and other means of effecting the least practicable adverse impact on such species or stock and its habitat, paying particular attention to rookeries, mating grounds, and areas of similar significance, and the availability of such species or stock for taking for certain subsistence uses.

Glacier Bay NP has based the mitigation measures which they will implement during the proposed research, on the following: (1) Protocols used during previous seabird research activities as required by our previous authorizations for these activities; and (2) Recommended best practices in Womble et al. (2013); Richardson et al. (1995); Pierson et al. (1998); and Weir and Dolman (2007).

To reduce the potential for disturbance from acoustic and visual stimuli associated with the activities Glacier Bay NP and/or its designees has proposed to implement the following mitigation measures for marine mammals:

• Perform pre-survey monitoring before deciding to access a study site;
• Avoid accessing a site based on a pre-determined threshold number of animals present; sites used by pinnipeds for pupping; or sites used by Steller sea lions;
• Perform controlled and slow ingress to the study site to prevent a stampede and select a pathway of approach to minimize the number of marine mammals harassed;
• Monitor for offshore predators at study sites. Avoid approaching the study site if killer whales (Orcinus orca) are present. If Glacier Bay NP and/or its designees see predators in the area, they must not disturb the pinnipeds until the area is free of predators.
• Maintain a quiet research atmosphere in the visual presence of pinnipeds.

Pre-Survey Monitoring

Prior to deciding to land onshore to conduct the study, the researchers would use high-powered image stabilizing binoculars from the watercraft to document the number, species, and location of hauled out marine mammals at each island. The vessels would maintain a distance of 328 to 1,640 ft (100 to 500 m) from the shoreline to allow the researchers to conduct pre-survey monitoring. During every visit, the researchers will examine each study site closely using high powered image stabilizing binoculars before approaching at distances of greater than 500 m (1,640 ft) to determine and document the number, species, and location of hauled out marine mammals.

Site Avoidance

Researchers would decide whether or not to approach the island based on the species present, number of individuals, and the presence of pups. If there are high numbers (more than 25) harbor seals hauled out (with or without young pups present), any time pups are present, or any time that Steller sea lions are present, the researchers would not approach the island and would not conduct gull monitoring research.

Controlled Landings

The researchers would determine whether to approach the island based on the number and type of animals present. If the island has 25 or fewer individuals without pups, the researchers would approach the island by motorboat at a speed of approximately 2 to 3 knots (2.3 to 3.4 mph). This would provide enough time for any marine mammals present to slowly enter the water without panic or stampede. The researchers would also select a pathway of approach farthest from the hauled out harbor seals to minimize disturbance.

Minimize Predator Interactions: If the researchers visually observe marine predators (i.e. killer whales) present in the vicinity of hauled out marine mammals, the researchers would not approach the study site.

Noise Reduction Protocols: While onshore at study sites, the researchers would remain vigilant for hauled out marine mammals. If marine mammals are present, the researchers would move slowly and use quiet voices to minimize disturbance to the animals present.

Mitigation Conclusions

We have carefully evaluated Glacier Bay NP's proposed mitigation measures in the context of ensuring that we prescribe the means of effecting the least practicable impact on the affected marine mammal species and stocks and their habitat. Our evaluation of potential measures included consideration of the following factors in relation to one another:

• The manner in which, and the degree to which, the successful implementation of the measure is expected to minimize adverse impacts to marine mammals;
• The proven or likely efficacy of the specific measure to minimize adverse impacts as planned; and
• The practicability of the measure for applicant implementation.

Any mitigation measure(s) prescribed by us should be able to accomplish, have a reasonable likelihood of accomplishing (based on current science), or contribute to the accomplishment of one or more of the general goals listed here:

1. Avoidance or minimization of injury or death of marine mammals wherever possible (goals 2, 3, and 4 may contribute to this goal).

2. A reduction in the numbers of marine mammals (total number or number at biologically important time or location) exposed to stimuli expected to result in incidental take (this goal may contribute to 1, above, or to reducing takes by behavioral harassment only).

3. A reduction in the number of times (total number or number at biologically important time or location) individuals would be exposed to stimuli that we expect to result in the take of marine mammals (this goal may contribute to 1, above, or to reducing harassment takes only).

4. A reduction in the intensity of exposures (either total number or number at biologically important time or location) to training exercises that we expect to result in the take of marine mammals (this goal may contribute to 1, above, or to reducing the severity of harassment takes only).

5. Avoidance or minimization of adverse effects to marine mammal habitat, paying special attention to the food base, activities that block or limit passage to or from biologically important areas, permanent destruction of habitat, or temporary destruction/disturbance of habitat during a biologically important time.

6. For monitoring directly related to mitigation—an increase in the probability of detecting marine mammals, thus allowing for more effective implementation of the mitigation.

Based on the evaluation of Glacier Bay NP's proposed measures, as well as other measures that may be relevant to the specified activity, we have preliminarily determined that the proposed mitigation measures provide the means of effecting the least practicable impact on marine mammal species or stocks and their habitat, paying particular attention to rookeries, mating grounds, and areas of similar significance.

Proposed Monitoring

In order to issue an incidental take authorization for an activity, section 101(a)(5)(D) of the Marine Mammal Protection Act states that we must set forth “requirements pertaining to the monitoring and reporting of such taking.” The Act's implementing regulations at 50 CFR 216.104 (a)(13) indicate that requests for an incidental take authorization must include the suggested means of accomplishing the necessary monitoring and reporting that will result in increased knowledge of the species and our expectations of the level of taking or impacts on populations of marine mammals present in the action area.

Glacier Bay NP submitted a marine mammal monitoring plan in section 13 of their Authorization application. We may modify or supplement the plan based on comments or new information received from the public during the public comment period. Any monitoring requirement we prescribe should improve our understanding of one or more of the following:

• Occurrence of marine mammal species in action area (e.g., presence, abundance, distribution, density).
• Nature, scope, or context of likely marine mammal exposure to potential stressors/impacts (individual or cumulative, acute or chronic), through better understanding of: (1) Action or environment (e.g., source characterization, propagation, ambient noise); (2) Affected species (e.g., life history, dive patterns); (3) Co-occurrence of marine mammal species with the action; or (4) Biological or behavioral context of exposure (e.g., age, calving or feeding areas).
• Individual responses to acute stressors, or impacts of chronic exposures (behavioral or physiological).
• How anticipated responses to stressors impact either: (1) Long-term fitness and survival of an individual; or (2) Population, species, or stock.
• Effects on marine mammal habitat and resultant impacts to marine mammals.
• Mitigation and monitoring effectiveness.

As part of its 2016 application, Glacier Bay NP proposes to sponsor marine mammal monitoring during the present project, in order to implement the mitigation measures that require real-time monitoring, and to satisfy the monitoring requirements of the incidental harassment authorization. The researchers will monitor the area for pinnipeds during all research activities. Monitoring activities will consist of conducting and recording observations on pinnipeds within the vicinity of the proposed research areas. The monitoring notes would provide dates, location, species, the researcher's activity, behavioral state, numbers of animals that were alert or moved greater than one meter, and numbers of pinnipeds that flushed into the water.

The method for recording disturbances follows those in Mortenson (1996). Glacier Bay NP would record disturbances on a three-point scale that represents an increasing seal response to the disturbance (Table 2). Glacier Bay will record the time, source, and duration of the disturbance, as well as an estimated distance between the source and haul-out. We note that we would consider only responses falling into Mortenson's Levels 2 and 3 as harassment under the MMPA, under the terms of this proposed Authorization.

Table 2—Seal Response to Disturbance

Level	Type of response	Definition
1	Alert	Seal head orientation in response to disturbance. This may include turning head towards the disturbance, craning head and neck while holding the body rigid in a u-shaped position, or changing from a lying to a sitting position.
2	Movement	Movements away from the source of disturbance, ranging from short withdrawals over short distances to hurried retreats many meters in length.
3	Flight	All retreats (flushes) to the water, another group of seals, or over the beach.

Glacier Bay NP has complied with the monitoring requirements under the previous authorizations. We have posted the 2015 l report on our Web site at http://www.nmfs.noaa.gov/​pr/​permits/​incidental/​research.htm and the results from the previous Glacier Bay NP monitoring reports support our findings that the proposed mitigation measures required under the 2014 and 2015 Authorizations, provide the means of effecting the least practicable adverse impact on the species or stock.

Glacier Bay NP can add to the knowledge of pinnipeds in the proposed action area by noting observations of: (1) Unusual behaviors, numbers, or distributions of pinnipeds, such that any potential follow-up research can be conducted by the appropriate personnel; (2) tag-bearing carcasses of pinnipeds, allowing transmittal of the information to appropriate agencies and personnel; and (3) rare or unusual species of marine mammals for agency follow-up.

Encouraging and Coordinating Research

Glacier Bay NP actively monitors harbor seals at breeding and molting haul out locations to assess trends over time (e.g., Mathews & Pendleton, 2006; Womble et al. 2010, Womble and Gende, 2013b). This monitoring program involves collaborations with biologists from the Alaska Department of Fish and Game, and the National Marine Mammal Laboratory. Glacier Bay NP will continue these collaborations and encourage continued or renewed monitoring of marine mammal species. Additionally, they would report vessel-based counts of marine mammals, branded, or injured animals, and all observed disturbances to the appropriate state and federal agencies.

Proposed Reporting

Glacier Bay NP will submit a draft monitoring report to us no later than 90 days after the expiration of the Incidental Harassment Authorization, if issued. The report will include a summary of the information gathered pursuant to the monitoring requirements set forth in the Authorization. Glacier Bay NP will submit a final report to the NMFS Director, Office of Protected Resources within 30 days after receiving comments from NMFS on the draft report. If Glacier Bay NP receives no comments from NMFS on the report, NMFS will consider the draft report to be the final report.

The report will describe the operations conducted and sightings of marine mammals near the proposed project. The report will provide full documentation of methods, results, and interpretation pertaining to all monitoring. The report will provide:

1. A summary and table of the dates, times, and weather during all research activities.

2. Species, number, location, and behavior of any marine mammals observed throughout all monitoring activities.

3. An estimate of the number (by species) of marine mammals exposed to acoustic or visual stimuli associated with the research activities.

4. A description of the implementation and effectiveness of the monitoring and mitigation measures of the Authorization and full documentation of methods, results, and interpretation pertaining to all monitoring.

In the unanticipated event that the specified activity clearly causes the take of a marine mammal in a manner prohibited by the authorization, such as an injury (Level A harassment), serious injury, or mortality (e.g., vessel-strike, stampede, etc.), Glacier Bay NP shall immediately cease the specified activities and immediately report the incident to the Chief, Permits and Conservation Division, Office of Protected Resources, NMFS and the Alaska Regional Stranding Coordinator. The report must include the following information:

• Time, date, and location (latitude/longitude) of the incident;
• Description and location of the incident (including water depth, if applicable);
• Environmental conditions (e.g., wind speed and direction, Beaufort sea state, cloud cover, and visibility);
• Description of all marine mammal observations in the 24 hours preceding the incident;
• Species identification or description of the animal(s) involved;
• Fate of the animal(s); and
• Photographs or video footage of the animal(s) (if equipment is available).

Glacier Bay NP shall not resume its activities until NMFS is able to review the circumstances of the prohibited take. We will work with Glacier Bay to determine what is necessary to minimize the likelihood of further prohibited take and ensure MMPA compliance. Glacier Bay NP may not resume their activities until notified by us via letter, email, or telephone.

In the event that Glacier Bay NP discovers an injured or dead marine mammal, and the lead researcher determines that the cause of the injury or death is unknown and the death is relatively recent (i.e., in less than a moderate state of decomposition as we describe in the next paragraph), Glacier Bay NP will immediately report the incident to the Chief, Permits and Conservation Division, Office of Protected Resources, NMFS and the Alaska Regional Stranding Coordinator. The report must include the same information identified in the paragraph above this section. Activities may continue while we review the circumstances of the incident. We will work with Glacier Bay NP to determine whether modifications in the activities are appropriate.

In the event that Glacier Bay NP discovers an injured or dead marine mammal, and the lead visual observer determines that the injury or death is not associated with or related to the authorized activities (e.g., previously wounded animal, carcass with moderate to advanced decomposition, or scavenger damage), Glacier Bay will report the incident to the incident to the Division Chief, Permits and Conservation Division, Office of Protected Resources, NMFS, at 301-427-8401 and the Alaska Regional Stranding Coordinator at [phone] within 24 hours of the discovery. Glacier Bay NP researchers will provide photographs or video footage (if available) or other documentation of the stranded animal sighting to us. Glacier Bay NP can continue their research activities.

Estimated Take by Incidental Harassment

Except with respect to certain activities not pertinent here, the MMPA defines “harassment” as: Any act of pursuit, torment, or annoyance which (i) has the potential to injure a marine mammal or marine mammal stock in the wild [Level A harassment]; or (ii) has the potential to disturb a marine mammal or marine mammal stock in the wild by causing disruption of behavioral patterns, including, but not limited to, migration, breathing, nursing, breeding, feeding, or sheltering [Level B harassment].

All anticipated takes would be by Level B harassment, involving temporary changes in behavior. NMFS expects that the proposed mitigation and monitoring measures would minimize the possibility of injurious or lethal takes. NMFS considers the potential for take by injury, serious injury, or mortality as remote. NMFS expects that the presence of Glacier Bay NP personnel could disturb animals hauled out and that the animals may alter their behavior or attempt to move away from the researchers.

As discussed earlier, NMFS considers an animal to have been harassed if it moved greater than 1 m (3.3 ft) in response to the surveyors' presence or if the animal was already moving and changed direction and/or speed, or if the animal flushed into the water. NMFS does not consider animals that became alert without such movements as harassed.

Based on pinniped survey counts conducted by Glacier Bay NP (e.g., Mathews & Pendleton, 2006; Womble et al., 2010), NMFS estimates that the research activities could potentially affect by Level B behavioral harassment 500 harbor seals over the course of the Authorization (Table 3). This estimate represents 6.9 percent of the Glacier Bay/Icy Strait stock of harbor seals and accounts for a maximum disturbance of 25 harbor seals each per visit at Boulder, Lone, and Flapjack Islands, and Geikie Rock, Alaska over a maximum level of five visits.

Table 3—Estimates of the Possible Numbers of Marine Mammals Exposed to Acoustic and Visual Stimuli During the Proposed Research Activities on Boulder, Lone, and Flapjack Islands, and Geikie Rock, Alaska, May Through September, 2015.

Species	Est. number of individuals exposed	Proposed take authorization	Percent of species or stock 1	Population trend 2
Harbor seal	500	500	9.9	Declining.
Steller sea lion	0	0	0	Increasing.
1 Table 1 in this notice lists the stock species abundance estimates that NMFS used to calculate the percentage of species/stock.
2 The population trend information is from Muto and Angliss, 2015.

Harbor seals tend to haul out in small numbers (on average, less than 50 animals) at most sites with the exception of Flapjack Island (Womble, Pers. Comm.). Animals on Flapjack Boulder Islands generally haul out on the south side of the Islands and are not located near the research sites located on the northern side of the Islands. Aerial survey maximum counts show that harbor seals sometimes haul out in large numbers at all four locations (see Table 2 in Glacier Bays NP's application), and sometimes individuals and mother/pup pairs occupy different terrestrial locations than the main haulout (J. Womble, personal observation).

Considering the conservation status for the Western stock of the Steller sea lion, the Glacier Bay NP researchers would not conduct ground-based or vessel-based surveys if they observe Steller sea lions before accessing Boulder, Lone, and Flapjack Islands, and Geikie Rock. Thus, NMFS expects no takes to occur for this species during the proposed activities.

NMFS does not propose to authorize any injury, serious injury, or mortality. NMFS expect all potential takes to fall under the category of Level B harassment only.

Negligible Impact Analysis and Preliminary Determinations

NMFS has defined “negligible impact” in 50 CFR 216.103 as “. . . an impact resulting from the specified activity that cannot be reasonably expected to, and is not reasonably likely to, adversely affect the species or stock through effects on annual rates of recruitment or survival.” A negligible impact finding is based on the lack of likely adverse effects on annual rates of recruitment or survival (i.e., population-level effects). An estimate of the number of Level B harassment takes alone is not enough information on which to base an impact determination. In addition to considering estimates of the number of marine mammals that might be “taken” through behavioral harassment, we consider other factors, such as the likely nature of any responses (e.g., intensity, duration), the context of any responses (e.g., critical reproductive time or location, migration), as well as the number and nature of estimated Level A harassment takes, the number of estimated mortalities, and effects on habitat.

To avoid repetition, the discussion below applies to all four species discussed in this notice. In making a negligible impact determination, we consider:

• The number of anticipated injuries, serious injuries, or mortalities;
• The number, nature, and intensity, and duration of Level B harassment;
• The context in which the takes occur (e.g., impacts to areas of significance, impacts to local populations, and cumulative impacts when taking into account successive/contemporaneous actions when added to baseline data);
• The status of stock or species of marine mammals (i.e., depleted, not depleted, decreasing, increasing, stable, impact relative to the size of the population);
• Impacts on habitat affecting rates of recruitment/survival; and The effectiveness of monitoring and mitigation measures to reduce the number or severity of incidental take.

For reasons stated previously in this document and based on the following factors, NMFS does not expect Glacier Bay NP's specified activities to cause long-term behavioral disturbance, abandonment of the haul-out area, injury, serious injury, or mortality:

1. The takes from Level B harassment would be due to potential behavioral disturbance. The effects of the research activities would be limited to short-term startle responses and localized behavioral changes due to the short and sporadic duration of the research activities. Minor and brief responses, such as short-duration startle or alert reactions, are not likely to constitute disruption of behavioral patterns, such as migration, nursing, breeding, feeding, or sheltering.

2. The availability of alternate areas for pinnipeds to avoid the resultant acoustic and visual disturbances from the research operations. Anecdotal observations and results from previous monitoring reports also show that the pinnipeds returned to the various sites and did not permanently abandon haul-out sites after Glacier Bay NP conducted their research activities.

3. There is no potential for large-scale movements leading to injury, serious injury, or mortality because the researchers would delay ingress into the landing areas only after the pinnipeds have slowly entered the water.

4. Glacier Bay NP would limit access to Boulder, Lone, and Flapjack Islands, and Geikie Rock when there are high numbers (more than 25) harbor seals hauled out (with or without young pups present), any time pups are present, or any time that Steller sea lions are present, the researchers would not approach the island and would not conduct gull monitoring research.

We do not anticipate that any injuries, serious injuries, or mortalities would occur as a result of Glacier Bay NP's proposed activities and we do not propose to authorize injury, serious injury, or mortality. These species may exhibit behavioral modifications, including temporarily vacating the area during the proposed seabird and pinniped research activities to avoid the resultant acoustic and visual disturbances. Further, these proposed activities would not take place in areas of significance for marine mammal feeding, resting, breeding, or calving and would not adversely impact marine mammal habitat. Due to the nature, degree, and context of the behavioral harassment anticipated, we do not expect the activities to impact annual rates of recruitment or survival.

NMFS does not expect pinnipeds to permanently abandon any area surveyed by researchers, as is evidenced by continued presence of pinnipeds at the sites during annual seabird monitoring. In summary, NMFS anticipates that impacts to hauled-out harbor seals during Glacier Bay NP's research activities would be behavioral harassment of limited duration (i.e., up to two hours per visit) and limited intensity (i.e., temporary flushing at most). NMFS does not expect stampeding, and therefore injury or mortality, to occur (see “Mitigation” for more details).

Based on the analysis contained herein of the likely effects of the specified activity on marine mammals and their habitat, and taking into consideration the implementation of the proposed mitigation and monitoring measures, NMFS preliminarily finds that the total marine mammal take from Glacier Bay NP's proposed research activities will not adversely affect annual rates of recruitment or survival and therefore will have a negligible impact on the affected species or stocks.

Small Numbers

As mentioned previously, NMFS estimates that Glacier Bay NP's activities could potentially affect, by Level B harassment only, one species of marine mammal under our jurisdiction. For harbor seals, this estimate is small (6.9 percent) relative to the population size.

Impact on Availability of Affected Species or Stock for Taking for Subsistence Uses

Section 101(a)(5)(D) of the MMPA also requires us to determine that the taking will not have an unmitigable adverse effect on the availability of marine mammal species or stocks for subsistence use. There are no relevant subsistence uses of marine mammals implicated by this action. Glacier Bay National Park prohibits subsistence harvest of harbor seals within the Park (Catton, 1995). Thus, NMFS has determined that the total taking of affected species or stocks would not have an unmitigable adverse impact on the availability of such species or stocks for taking for subsistence purposes.

Endangered Species Act (ESA)

NMFS does not expect that Glacier Bay NP's proposed research activities (which include mitigation measures to avoid harassment of Steller sea lions) would affect any species listed under the ESA. Therefore, NMFS has determined that a section 7 consultation under the ESA is not required.

National Environmental Policy Act (NEPA)

In 2014, NMFS prepared an Environmental Assessment (EA) analyzing the potential effects to the human environment from NMFS' issuance of an Authorization to Glacier Bay NP for their seabird research activities.

In September 2014, NMFS issued a Finding of No Significant Impact (FONSI) on the issuance of an Authorization for Point Blue's research activities in accordance with section 6.01 of the NOAA Administrative Order 216-6 (Environmental Review Procedures for Implementing the National Environmental Policy Act, May 20, 1999). Glacier Bay NP's proposed activities and impacts for 2015 are within the scope of the 2014 EA and FONSI. NMFS provided relevant environmental information to the public through a previous notice for the proposed Authorization (79 FR 32226, June 4, 2014) and considered public comments received in response prior to finalizing the 2014 EA and deciding whether or not to issue a Finding of No Significant Impact (FONSI). NMFS has reviewed the 2014 EA and determined that there are no new direct, indirect, or cumulative impacts to the human and natural environment associated with the Authorization requiring evaluation in a supplemental EA and NMFS,

Proposed Authorization

As a result of these preliminary determinations, NMFS proposes to authorize the take of marine mammals incidental to Glacier Bay NP's seabird research activities, provided the previously mentioned mitigation, monitoring, and reporting requirements are incorporated. The next section provides the proposed Authorization language which we propose for inclusion in the Authorization (if issued).

Glacier Bay National Park, P.O. Box 140, Gustavus, Alaska 99826 and/or its designees (holders of the Authorization) are hereby authorized under section 101(a)(5)(D) of the Marine Mammal Protection Act (16 U.S.C. 1371(a)(5)(D)) to harass small numbers of marine mammals incidental to conducting monitoring and research studies on glaucus-winged gulls (Larus glaucescens) within Glacier Bay National Park and Preserve in Alaska.

1. This Authorization is valid from May 1 through September 30, 2016.

2. This Authorization is valid only for research activities that occur in the following specified geographic areas: Boulder (58°33′18.08″ N; 136°1′13.36″ W); Lone (58°43′17.67″ N; 136°17′41.32″ W), and Flapjack (58°35′10.19″ N; 135°58′50.78″ W) Islands, and Geikie Rock (58°41′39.75″ N; 136°18′39.06″ W); and Tlingit Point Islet (58°45′16.86″ N; 136°10′41.74″ W) in Glacier Bay, Alaska.

3. Species Authorized and Level of Takes

a. The taking, by Level B harassment only, is limited to the following species: 500 Pacific harbor seals (Phoca vitulina).

b. The taking by injury (Level A harassment), serious injury or death of any of the species listed in Condition 3(a) or the taking of any kind of any other species of marine mammal is prohibited and may result in the modification, suspension or revocation of this Authorization.

c. The taking of any marine mammal in a manner prohibited under this Authorization must be reported immediately to the Chief, Permits and Conservation Division, Office of Protected Resources, NMFS.

4. General Conditions

A copy of this Authorization must be in the possession of Glacier Bay National Park, its designees, and field crew personnel (including research collaborators) operating under the authority of this Authorization at all times.

5. Mitigation Measures

The Holder of this Authorization is required to implement the following mitigation measures:

a. Conduct pre-survey monitoring before deciding to access a study site. Prior to deciding to land onshore of Boulder, Lone, or Flapjack Island or Geikie Rock, the Holder of this Authorization will use high-powered image stabilizing binoculars before approaching at distances of greater than 500 m (1,640 ft) to determine and document the number, species, and location of hauled out marine mammals. The vessels will maintain a distance of 328 to 1,640 ft (100 to 500 m) from the shoreline.

i. If the Holder of the Authorization determines that there are 25 or more harbor seals (with or without young pups present) hauled out on the shoreline, the holder will not access the island and will not conduct the study at that time.

ii. If the Holder of the Authorization determines that any Steller sea lions (Eumetopias jubatus) are present at the study site, the Holder will not access the island and will not conduct the study at that time.

iii. If the Holder of the Authorization determines that there are any pups hauled out on the shoreline and vulnerable to being separated from their mothers, the Holder will not access the island and will not conduct the study at that time.

b. Minimize the potential for disturbance by: (1) Performing controlled and slow ingress to the study site to prevent a stampede; and (2) selecting a pathway of approach farthest from the hauled out harbor seals to minimize disturbance.

c. Monitor for offshore predators at the study sites and avoid research activities when predators area present. Avoid approaching the study site if killer whales (Orcinus orca) are present. If the Holder of this Authorization observes predators in the area, they must not disturb the pinnipeds until the area is free of predators.

d. Maintain a quiet working atmosphere, avoid loud noises, and use hushed voices in the presence of hauled out pinnipeds.

6. Monitoring

Glacier Bay NP is required to record the following:

a. BLM and/or its designees shall record the following:

i. Species counts (with numbers of adults/juveniles); and:

ii. Numbers of disturbances, by species and age, according to a three-point scale of intensity including: (1) Head orientation in response to disturbance, which may include turning head towards the disturbance, craning head and neck while holding the body rigid in a u-shaped position, or changing from a lying to a sitting position and/or slight movement of less than 1 meter; “alert” (2) Movements in response to or away from disturbance, typically over short distances (1-3 meters) and including dramatic changes in direction or speed of locomotion for animals already in motion; “movement” and (3) All flushes to the water as well as lengthier retreats (>3 meters); “flight”.

iii. Information on the weather, including the tidal state and horizontal visibility.

b. If applicable, the observer shall note observations of marked or tag-bearing pinnipeds or carcasses, as well as any rare or unusual species of marine mammal.

c. If applicable, the observer shall note the presence of any offshore predators (date, time, number, and species).

7. Reporting

The holder of this Authorization is required to:

a. Draft Report: Submit a draft monitoring report to the Division Chief, Permits and Conservation Division, Office of Protected Resources, National Marine Fisheries Service within 90 days after the Authorization expires. NMFS will review the Draft Report which is subject to review and comment by NMFS. Glacier Bay NP must address any recommendations made by NMFS in the Final Report prior to submission to NMFS. If NMFS decides that the draft final report needs no comments, NMFS will consider the draft report as the Final Report.

b. Final Report: Glacier Bay shall prepare and submit a Final Report to NMFS within 30 days following resolution of any comments on the draft report from NMFS.

8. Reporting Injured or Dead Marine Mammals

In the unanticipated event that the specified activity clearly causes the take of a marine mammal in a manner prohibited by the authorization, such as an injury (Level A harassment), serious injury, or mortality (e.g., vessel-strike, stampede, etc.), BLM and/or its designees shall immediately cease the specified activities and immediately report the incident to the Division Chief, Permits and Conservation Division, Office of Protected Resources, NMFS, and the Alaska Regional Stranding Coordinator. The report must include the following information:

• Time, date, and location (latitude/longitude) of the incident;
• Description and location of the incident (including water depth, if applicable);
• Environmental conditions (e.g., wind speed and direction, Beaufort sea state, cloud cover, and visibility);
• Description of all marine mammal observations in the 24 hours preceding the incident;
• Species identification or description of the animal(s) involved;
• Fate of the animal(s); and
• Photographs or video footage of the animal(s) (if equipment is available).

Glacier Bay NP shall not resume its activities until NMFS is able to review the circumstances of the prohibited take. NMFS will work with Glacier Bay NP to determine what is necessary to minimize the likelihood of further prohibited take and ensure MMPA compliance. Glacier Bay NP may not resume their activities until notified by us via letter, email, or telephone.

In the event that Glacier Bay NP discovers an injured or dead marine mammal, and the marine mammal observer determines that the cause of the injury or death is unknown and the death is relatively recent (i.e., in less than a moderate state of decomposition as we describe in the next paragraph), Glacier Bay NP will immediately report the incident to the Division Chief, Permits and Conservation Division, Office of Protected Resources, NMFS, and the Alaska Regional Stranding Coordinator. The report must include the same information identified in the paragraph above this section. Activities may continue while NMFS reviews the circumstances of the incident. NMFS would work with Glacier Bay NP to determine whether modifications in the activities are appropriate.

In the event that Glacier Bay NP discovers an injured or dead marine mammal, and the lead visual observer determines that the injury or death is not associated with or related to the authorized activities (e.g., previously wounded animal, carcass with moderate to advanced decomposition, or scavenger damage), Glacier Bay NP will report the incident to the Division Chief, Permits and Conservation Division, Office of Protected Resources, NMFS, and the Alaska Regional Stranding Coordinator within 24 hours of the discovery. Glacier Bay NP personnel will provide photographs or video footage (if available) or other documentation of the stranded animal sighting to us. Glacier Bay NP can continue their survey activities while NMFS reviews the circumstances of the incident.

Request for Public Comments

NMFS requests comment on the analyses, the draft Authorization, and any other aspect of the Notice of Proposed Incidental Harassment Authorization for Glacier Bay NP's activities.

Please include any supporting data or literature citations with your comments to help inform our final decision on Glacier Bay NP's request for an Authorization.

Dated: March 18, 2016.

Perry F. Gayaldo,

Deputy Director, Office of Protected Resources, National Marine Fisheries Service.