62 Works

Chelatna pike suppression in 2018 and 2019

Robert DeCino, Kristine Dunker, Robert Massengill, Parker Bradley, Cody Jacobson, Nicole Swenson & Andy Wizik
Northern pike are an invasive species in southcentral Alaska and have caused the decline and extirpation of salmonids and other native fish populations across the region. Over the last decade, adaptive management of invasive pike populations has included population suppression, eradication, outreach, angler engagement, and research to mitigate damages from pike where feasible. Pike suppression efforts have been focused in open drainages of the northern and western Cook Inlet areas, and eradication efforts have been...

Data from: Migratory culture, population structure and stock identity in North Pacific beluga whales (Delphinapterus leucas)

Greg O'Corry-Crowe, Robert Suydam, Lori Quakenbush, Brooke Potgieter, Lois Harwood, Dennis Litovka, Tatiana Ferrer, John Citta, Vladimir Burkanov, Kathy Frost, Barbara Mahoney & Greg O’Corry-Crowe
The annual return of beluga whales, Delphinapterus leucas, to traditional seasonal locations across the Arctic may involve migratory culture, while the convergence of discrete summering aggregations on common wintering grounds may facilitate outbreeding. Natal philopatry and cultural inheritance, however, has been difficult to assess as earlier studies were of too short a duration, while genetic analyses of breeding patterns, especially across the beluga's Pacific range, have been hampered by inadequate sampling and sparse information on...

Data from: Using citizen-science observations to understand long-term trends in common and Pacific loon populations in urbanized Southcentral Alaska

Laura A. McDuffie, Julie C. Hagelin, Marian L. Snively, Grey W. Pendleton & Audrey R. Taylor
For over 30 years, the Alaska Loon Watch (1985−1999) and the Alaska Loon and Grebe Watch (2000−2015) engaged citizen scientist participants to record over 10,000 observations of common Gavia immer and Pacific loons Gavia pacifia at 346 lakes in five sub-regions of Southcentral Alaska. We used generalized linear mixed models to estimate long-term trends in adult loon counts and chick survival and examined environmental variables associated with loon abundance. Adult common loon counts increased in...

Age composition of subsistence harvests and total return of sockeye salmon from the Kvichak River

Beverly Agler & Tyler Dann
This project aged samples of sockeye salmon harvested in the subsistence fishery in the Kvichak River watershed in 2018 and 2019. Age data were vital to previously funded AKSSF Project #44362 ("Stock Composition of Subsistence Harvests and Total Return of Sockeye Salmon from the Kvichak River"). It was determined in that project’s first year that scale reabsorption necessitated using otoliths to age samples rather than scales. Ages from otolith reading combined with stock composition estimates...

Daily abundance of Dall's sheep peaks during late summer in a seasonal habitat of high-management interest

Cody E. Deane, Barrett A. Flynn, Darren L. Bruning, Greg A. Breed & Kim A. Jochum
Informing conservation and management decisions for habitats frequented by species of high management interest often face the challenge of limited resources for conducting wildlife surveys. When surveys are focused on local areas or sparsely distributed species, it may also be difficult to obtain counts sufficient for implementing abundance models that account for imperfect detection. With replicated aerial surveys collected within a 70.25 km2 portion of the Eastern Alaska Range, Alaska, USA during the summers of...

Data from: Secondary contact and changes in coastal hydrology influence the nonequilibrium population structure of a salmonid (Oncorhynchus keta)

Eleni L. Petrou, Lorenz Hauser, Robin S. Waples, Jim E. Seeb, William D. Templin, Daniel Gomez-Uchida & Lisa W. Seeb
Numerous empirical studies have reported lack of migration–drift equilibrium in wild populations. Determining the causes of nonequilibrium population structure is challenging because different evolutionary processes acting at a variety of spatiotemporal scales can produce similar patterns. Studies of contemporary populations in northern latitudes suggest that nonequilibrium population structure is probably caused by recent colonization of the region after the last Pleistocene ice age ended ~13 000 years ago. The chum salmon's (Oncorhynchus keta) range was...

Data from: A genetic discontinuity in moose (Alces alces) in Alaska corresponds with fenced transportation infrastructure

Robert E. Wilson, Sean D. Farley, Thomas J. McDonough, Sandra L. Talbot & Perry S. Barboza
The strength and arrangement of movement barriers can impact the connectivity among habitat patches. Anthropogenic barriers (e.g. roads) are a source of habitat fragmentation that can disrupt these resource networks and can have an influence on the spatial genetic structure of populations. Using microsatellite data, we evaluated whether observed genetic structure of moose (Alces alces) populations were associated with human activities (e.g. roads) in the urban habitat of Anchorage and rural habitat on the Kenai...

Data from: Biocomplexity in populations of European anchovy in the Adriatic Sea

Paolo Ruggeri, Andrea Splendiani, Giulia Occhipinti, Tatiana Fioravanti, Alberto Santojanni, Iole Leonori, Andrea De Felice, Enrico Arneri, Gabriele Procaccini, Gaetano Catanese, Vjekoslav Tičina, Angelo Bonanno, Paola Nisi Cerioni, Massimo Giovannotti, William Stewart Grant, Vincenzo Maputo Barucchi & Vincenzo Caputo Barucchi
The sustained exploitation of marine populations requires an understanding of a species' adaptive seascape so that populations can track environmental changes from short- and long-term climate cycles and from human development. The analysis of the distributions of genetic markers among populations, together with correlates of life-history and environmental variability, can provide insights into the extent of adaptive variation. Here, we examined genetic variability among populations of mature European anchovies (n = 531) in the Adriatic...

Data from: Potentially adaptive mitochondrial haplotypes as a tool to identify divergent nuclear loci

Michael R. Garvin, William D. Templin, Anthony J. Gharrett, Nick DeCovich, Christine M. Kondzela, Jeffrey R. Guyon & Megan V. McPhee
1. Genetic tools are commonly used for conservation and management of at-risk species. Individuals are often sampled from mixtures composed of many populations, which creates a need to assign individuals to their source. This can be problematic when the genetic divergence among source populations is weak but can be improved using adaptive genetic loci, which should show stronger levels of divergence. 2. We previously reported a signature of positive selection in the mitochondrial-encoded ND5 subunit...

Data from: Spatial variability in size at maturity of golden king crab (Lithodes aequispinus) and implications for fisheries management

Andrew P. Olson, Chris E. Siddon & Ginny L. Eckert
Many crab fisheries around the world are managed by size, sex and season, where males are given at least one opportunity to reproduce before being harvested. Golden king crab (Lithodes aequispinus) supports a commercial fishery in Southeast Alaska and legal size is based on growth and maturity information from other parts of their range. Size at maturity estimates varied for crabs among seven management areas in Southeast Alaska, where male maturity estimates increased in size...

Naknek River subsistence salmon harvest assessment

Bronwyn Jones
This project provides updated information about the harvests of salmon by the communities of King Salmon, Naknek, and South Naknek, Alaska. This project details the results of a household survey administered for the study years of 2017 and 2018 for harvests and uses of wild salmon by households in these Bristol Bay Borough communities. In addition to the results from the household survey data set, the resulting report includes information from in-depth interviews conducted with...

Data from - Ecological insights from three decades of animal movement tracking across a changing Arctic

Gil Bohrer, Sarah Davidson, Eliezer Gurarie, Scott LaPoint, Peter Mahoney, Emma Grier, Ophélie Couriot, Allicia Kelly, Bryan Bedrosian, Jerrold Belant, Travis Booms, Bridget Borg, Stan Boutin, Erica Craig, Tracy Davison, Robert Domenech, James Hodson, Kyle Joly, Nicholas Larter, A. David M. Latham, Stephen Lewis, Carol McIntyre, Tricia Miller, Kelsey Russell, Dale Seip … & Judy Williams
We provide here the data used in analysis of 3 test cases, presented in the manuscript "Ecological insights from three decades of animal movement tracking across a changing Arctic". We utilized the new Arctic Animal Movement Archive (AAMA), a growing collection of 201 standardized terrestrial and marine animal tracking studies from 1991–present. The AAMA supports public data discovery, preserves fundamental baseline data for the future, and facilitates efficient, collaborative data analysis. With three AAMA-based case...

Data from: Steep and deep: Terrain and climate factors explain brown bear (Ursus arctos) alpine den site selection to guide heli-skiing management

Anthony Crupi, David Gregovich & Kevin White
Winter recreation and tourism continue to expand worldwide, and where these activities overlap with valuable wildlife habitat, there is greater potential for conservation concerns. Wildlife populations can be particularly vulnerable to disturbance in alpine habitats as helicopters and snowmachines are increasingly used to access remote backcountry terrain. Brown bears (Ursus arctos) have adapted hibernation strategies to survive this period when resources and energy reserves are limited, and disturbance could negatively impact fitness and survival. To...

Age at weaning in Steller sea lions

Kelly Hastings
The duration of offspring care is critical to female fitness and population resilience by allowing flexibility in life history strategies in a variable environment. Yet, for many mammals capable of extended periods of maternal care, estimates of the duration of offspring dependency are not available and the relative importance of flexibility of this trait on fitness and population viability has rarely been examined. We used data from 4,447 Steller sea lions Eumetopias jubatus from the...

Climate and conspecific density inform phenotypic forecasting of juvenile Pacific salmon body size

Marta Ulaski, Heather Finkle, Anne Beaudreau & Peter Westley
1. Predicting effects of climate on fitness-linked phenotypic traits, such as body size, is important for the management and conservation of species in the face of global change. During sensitive life stages, small changes in mean trait values can have large effects on survival and population productivity. 2. The transition from freshwater to saltwater by migrating anadromous fishes such as Pacific salmon (genus Oncorhynchus) is a critical life history transition, where survival is mediated by...

Stock composition of subsistence harvests and total return of sockeye salmon from the Kvichak River

Tyler Dann
This project will reconstruct the total return of sockeye salmon to the Kvichak River to identify: 1) which of four stocks are most utilized by subsistence fisheries; 2) when these stocks migrate through the commercial fishery and escapement monitoring tower; and 3) if there are temporal trends in migration that may allow commercial fisheries managers to protect stocks important to subsistence fisheries. In addition, by building upon existing smolt stock composition data, this project will...

Heterogeneity in risk-sensitive allocation of somatic reserves in a long-lived mammal

Rachel Smiley, Rachel Smiley, Brittany L. Wagler, Tayler LaSharr, Kristin Denryter, Thomas Stephenson, Alyson Courtemanch, Tony Mong, Daryl Lutz, Doug McWhirter, Doug Brimeyer, Patrick Hnilicka, Blake Lowrey & Kevin Monteith
Patterns of food quality and availability, when combined with energetic demands in seasonal environments, shape resource acquisition and allocation by animals and hold consequences for life-history strategies. In long-lived species with extensive maternal care, regulation of somatic reserves of energy and protein can occur in a risk-sensitive manner, wherein resources are preferentially allocated to support survival at the cost of investment in reproduction. We investigated how Rocky Mountain bighorn sheep (Ovis canadensis), an alpine mammal...

Isotopic niche partitioning and individual specialization in an Arctic raptor guild

Devin L. Johnson, Michael T. Henderson, David L. Anderson, Travis L. Booms & Cory T. Williams
Intra- and inter-specific resource partitioning within predator communities is a fundamental component of trophic ecology, and one proposed mechanism for how populations partition resources is through individual niche variation. The Niche Variation Hypothesis (NVH) predicts that inter-individual trait variation leads to functional trade-offs in foraging efficiency, resulting in populations composed of individual dietary specialists. The degree to which niche specialization persists within a population is plastic and responsive to fluctuating resource availability. We quantified niche...

Data from: Multiplex preamplification PCR and microsatellite validation allows accurate single nucleotide polymorphism (SNP) genotyping of historical fish scales

Matt J. Smith, Carita E. Pascal, Zac Grauvogel, Christopher Habicht, James E. Seeb & Lisa W. Seeb
Incorporating historical tissues into the study of ecological, conservation, and management questions can broaden the scope of population genetic research by enhancing our understanding of evolutionary processes and anthropogenic influences on natural populations. Genotyping historical and low-quality samples has been plagued by challenges associated with low amounts of template DNA and the potential for preexisting DNA contamination among samples. We describe a two-step process designed to (i) accurately genotype large numbers of historical low-quality scale...

Data from: Habitat selection predicts genetic relatedness in an alpine ungulate

Aaron B. A. Shafer, Joseph M. Northrup, Kevin S. White, Mark S. Boyce, Steeve D. Côté & David W. Coltman
Landscape heterogeneity plays an integral role in shaping ecological and evolutionary processes. Despite links between the two disciplines, ecologists and population geneticists have taken different approaches to evaluating habitat selection, animal movement, and gene flow across the landscape. Ecologists commonly use statistical models such as resource selection functions (RSFs) to identify habitat features disproportionately selected by animals, while population genetic approaches model genetic differentiation according to the distribution of habitat variables. We combined ecological and...

Data from: Genetic profiling links changing sea-ice to shifting beluga whale migration patterns

Gregory O'Corry-Crowe, Andrew R. Mahoney, Robert Suydam, Lori Quakenbush, Alex Whiting, Lloyd Lowry, Lois Harwood & Greg O'Corry-Crowe
There is increasing concern over how Arctic fauna will adapt to climate related changes in sea-ice. We used long-term sighting and genetic data on beluga whales (Delphinapterus leucas) in conjunction with multi-decadal patterns of sea-ice in the Pacific Arctic to investigate the influence of sea-ice on spring migration and summer residency patterns. Substantial variations in sea-ice conditions were detected across seasons, years and sub-regions, revealing ice–ocean dynamics more complex than Arctic-wide trends suggest. This variation...

Data from: Spatio-temporal models reveal subtle changes to demersal communities following the Exxon Valdez oil spill

Andrew O. Shelton, Mary E. Hunsicker, Eric J. Ward, Blake E. Feist, Rachael Blake, Colette L. Ward, Benjamin C. Williams, Janet T. Duffy-Anderson, Anne B. Hollowed & Alan C. Haynie
Toxic pollutants such as crude oil have direct negative effects for a wide array of marine life. While mortality from acute exposure to oil is obvious, sub-lethal consequences of exposure to petroleum derivatives for growth and reproduction are less evident and sub-lethal effects in fish populations are obscured by natural environmental variation, fishing, and measurement error. We use fisheries independent surveys in the Gulf of Alaska to examine the consequences of the 1989 Exxon Valdez...

Data from: Comparative landscape genetic analysis of three Pacific salmon species from subarctic North America

Jeffrey B. Olsen, Penelope A. Crane, Blair G. Flannery, Karen Dunmall, William D. Templin & John K. Wenburg
We examined the assumption that landscape heterogeneity similarly influences the spatial distribution of genetic diversity in closely related and geographically overlapping species. Accordingly, we evaluated the influence of watershed affiliation and nine habitat variables from four categories (spatial isolation, habitat size, climate, and ecology) on population divergence in three species of Pacific salmon (Oncorhynchus tshawytscha, O. kisutch, and O. keta) from three contiguous watersheds in subarctic North America. By incorporating spatial data we found that...

Tote Road Pike Lakes restoration: northern pike eradication

Robert Massengill
This data was collected during the period of 2016-2019 in support of an invasive northern pike and muskeullunge eradication project at eight lakes near Soldotna, Alaska collectively known as the Tote Road Pike Lakes. The data represents information on lake water quality, gillnetting effort and catch and catch sampling. The dataset also includes data on the capture and relocation of native fish (rainbow trout and juvenile coho salmon) collected from Soldotna Creek (a Kenai River...

Afognak Lake Sockeye Salmon Stock Monitoring Project

Darin Ruhl
The Afognak River (Litnik) has historically supported one of the largest sockeye salmon subsistence fisheries for Kodiak Archipelago residents. In the 2000s, the number of sockeye salmon returning to Afognak River had diminished substantially resulting in closures to commercial, sport, and subsistence fishing in Afognak Bay. Local subsistence users, represented by the Kodiak-Aleutians Regional Advisory Council, Kodiak Fish and Game Advisory Committee, and Kodiak Tribal Council, stressed the importance of the Afognak River system to...

Registration Year

  • 2023
    2
  • 2022
    7
  • 2021
    10
  • 2020
    12
  • 2019
    3
  • 2018
    5
  • 2017
    5
  • 2016
    5
  • 2015
    3
  • 2014
    2

Resource Types

  • Dataset
    62

Affiliations

  • Alaska Department of Fish and Game
    62
  • University of Washington
    10
  • University of Alaska Fairbanks
    9
  • Alaska Fisheries Science Center
    4
  • University of Alaska System
    4
  • National Marine Fisheries Service
    4
  • National Park Service
    4
  • United States Fish and Wildlife Service
    4
  • Oregon State University
    3
  • University of Wyoming
    3