12 Works

Data from: Ringed seal (Pusa hispida) seasonal movements, diving, and haul-out behavior in the Beaufort, Chukchi, and Bering seas (2011–2017)

Andrew Von Duyke, David Douglas, Jason Herreman & Justin Crawford
Continued Arctic warming and sea-ice loss will have important implications for the conservation of ringed seals, a highly ice-dependent species. A better understanding of their spatial ecology will help characterize emerging ecological trends and inform management decisions. We deployed satellite transmitters on ringed seals in the summers of 2011, 2014, and 2016 near Utqiaġvik (formerly Barrow), Alaska to monitor their movements, diving, and haul-out behavior. We present analyses of tracking and dive data provided by...

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...

Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2019

Naomi Brodersen
Dual-frequency identification sonar (DIDSON) was used to estimate adult summer chum salmon Oncorhynchus keta and pink salmon O. gorbuscha passage in the Anvik River from June 16 to July 26, 2019. Apportionment to species was determined from data collected from tower counts. A total of 249,014 (SE 2,034) summer chum and 241 (SE 81) pink salmon were estimated to have passed the sonar site. A beach seine sample fishery was conducted to collect age, sex,...

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...

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...

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: 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...

Bayesian stable isotope mixing models effectively characterize the diet of an Arctic raptor

Devin Johnson, Michael Henderson, Travis Booms, Cory Williams & David Anderson
1. Bayesian stable isotope mixing models (BSIMMs) for δ13C and δ15N can be a useful tool to reconstruct diets, characterize trophic relationships, and assess spatiotemporal variation in food webs. However, use of this approach typically requires a priori knowledge on the level of enrichment occurring between the diet and tissue of the consumer being sampled (i.e., a trophic discrimination factor or TDF). 2. TDFs derived from captive feeding studies are highly variable, and it is...

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...

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...

Data from: Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2018

Naomi B. Brodersen
Dual-frequency identification sonar (DIDSON) was used to estimate adult summer chum salmon Oncorhynchus keta and pink salmon O. gorbuscha passage in the Anvik River from June 15 to July 26, 2018. Apportionment to species was determined using data collected from tower counts. A total of 305,098 (SE 5,926) summer chum and 1,122,346 (SE 7,588) pink salmon were estimated to have passed the sonar site. A beach seine sample fishery was conducted to collect age, sex,...

Direction and magnitude of natural selection on body size differs among age classes of seaward migrating Pacific salmon

Marta Ulaski, Heather Finkle & Peter Westley
Due to the mediating role of body size in determining fitness, the ‘bigger is better’ hypothesis still pervades evolutionary ecology despite evidence that natural selection on phenotypic traits varies in time and space. For Pacific salmon (genus Oncorhynchus), most individual studies quantify selection across a narrow range of sizes and ages; therefore, uncertainties remain concerning how selection on size may differ among diverse life-histories. Here, we quantify the direction and magnitude of natural selection on...

Registration Year

  • 2020
    12

Resource Types

  • Dataset
    12

Affiliations

  • Alaska Department of Fish and Game
    12
  • University of Alaska Fairbanks
    2
  • University of Washington
    1
  • Columbia University
    1
  • SUNY College of Environmental Science and Forestry
    1
  • The Ohio State University
    1
  • University of Alberta
    1
  • North Slope Borough
    1
  • Max Planck Institute of Animal Behavior
    1
  • Landcare Research
    1