7 Works

Trawl Data from the NOAA Bell M. Shimada during the 2022 International Year of the Salmon Pan-Pacific Winter High Seas Expedition

Laurie Weitkamp, Ed Farley, Katherine Howard, Sabrina Garcia, Jim Murphy & Jamal Moss
This dataset contains the trawl and specimen data collected aboard the R/V Bell M. Shimada for the IYS survey in 2022 in the North Pacific Ocean. This package contains three components; event, catch, and specimen data. The event data contains all of the sampling event information, including time, location, and duration. All dates and times are in UTC. The catch data contains all of the catch records, as counts, weights, and lengths, for each species/taxa...

Results of survey for selected parasites in Alaska brown bears (Ursus arctos)

Ellen Haynes, Sarah Coker, Michael Yabsley, Kevin Niedrighaus, Andrew Ramey, Guilherme Verocai, Grant Hilderbrand, Kyle Joly, David Gustine, Buck Mangipane, William Leacock, Anthony Crupi & Christopher Cleveland
To assess the prevalence of endo- and ectoparasites in Alaska brown bears (Ursus arctos), blood and fecal samples were collected during 2013 – 2016 from five locations: Gates of the Arctic National Park and Preserve (GAAR), Katmai National Park (KATM), Lake Clark National Park and Preserve (LACL), Yakutat Forelands (YAK), and Kodiak Island (KOD). Standard fecal centrifugal-flotation was used to screen for gastrointestinal parasites, molecular techniques were used to test blood for the presence of...

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...

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...

Sonar Estimation of Summer Chum and Pink Salmon in the Anvik River, Alaska, 2021

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 15 to July 26, 2021. Apportionment to species was determined from data collected from tower counts. A total of 18,819 (SE 273) summer chum and 0 pink salmon were estimated to have passed the sonar site. A beach seine sample fishery was conducted to collect age, sex, and length...

Pasagshak River Sockeye Salmon (Oncorhynchus nerka) Escapement Monitoring 2019–2021

Michelle Wattum
Since 2011, sockeye salmon (Oncorhynchus nerka) escapement through the Pasagshak River into Lake Rose Teed on the Kodiak Island road system has been estimated with a weir. A continuation of funding from the Alaska Sustainable Salmon Fund (AKSSF, Project #52009) allowed the Alaska Department of Fish and Game (ADF&G), Division of Commercial Fisheries to operate a PVC floating weir near the mouth of Lake Rose Teed during the 2019 through 2021 seasons. This data set...

Registration Year

  • 2022

Resource Types

  • Dataset


  • Alaska Department of Fish and Game
  • University of Alaska Fairbanks
  • University of Washington
  • University of Georgia
  • University of Wyoming
  • Texas A&M University
  • Simon Fraser University
  • California Department of Fish and Wildlife
  • Montana State University
  • National Oceanic and Atmospheric Administration