Reinitiation of Endangered Species Act (ESA) Section 7(a)(2) Biological Opinion and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat (EFH) Consultation for the Replacement of the West Cashmere Bridge over the Wenatchee River in Chelan County, Washington (170200110707 Olalla Canyon-Wenatchee River).
ESA Section 7 Consultation ; WCRO-2020-00249
Framework action to set the annual catch limit and bag limit for vermilion snapper, set annual catch limit for yellowtail snapper, and modify the venting tool requirement (including environmental assessment, regulatory impact review, and regulatory flexibility act analysis) : framework action to the fishery management plan for the reef fish resources of the Gulf of MexicoRoy E. Crabtree
Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Ongoing Grazing Actions on the Forney Allotment: Panther Creek-Porphyry Creek - 170602030903; Musgrove Creek - 170602030904; Moyer Creek - 170602030905; Panther Creek-Porphyry Creek - 170602030903; Panther Creek-Cabin Creek - 170602030902, Lemhi County, Idaho (One project)
ESA Section 7 Consultation ; WCRO-2020-00479
Cold call: the acoustic repertoire of Ross Sea killer whales (Orcinus orca, Type C) in McMurdo Sound, AntarcticaRebecca Wellard, Robert Pitman, John Durban & Christine Erbe
Killer whales (Orcinus orca) are top marine predators occurring globally. In Antarctic waters, five ecotypes have been described, with Type C being the smallest form of killer whale known. Acoustic recordings of nine encounters of Type C killer whales were collected in 2012 and 2013 in McMurdo Sound, Ross Sea. In a combined 3.5 hours of recordings, 6386 killer whale vocalisations were detected and graded based on their signal-to-noise ratio. Spectrograms of the highest-quality calls...
Changes in dive patterns of leatherback turtles with sea surface temperature and potential foraging habitatsJunichi Okuyama, Scott Benson, Jeffrey Seminoff & Peter Dutton
Marine mesotherms are able to occupy broader thermal niches than ectotherms; however, this means they must exhibit greater tolerance to diverse environmental conditions across the ocean. Knowledge remains limited about how differences in environmental conditions within occupied habitats affect the bioenergetics of mesotherms and associated ecological traits. Here, we report that leatherback turtles (Dermochelys coriacea) migrating across the North Pacific changed their dive behavior regionally, possibly in response to changes in sea surface temperature and...
Data from: Avoiding tipping points in fisheries management through Gaussian process dynamic programmingCarl Boettiger, Marc Mangel & Stephan Munch
Model uncertainty and limited data are fundamental challenges to robust management of human intervention in a natural system. These challenges are acutely highlighted by concerns that many ecological systems may contain tipping points, such as Allee population sizes. Before a collapse, we do not know where the tipping points lie, if they exist at all. Hence, we know neither a complete model of the system dynamics nor do we have access to data in some...
Information on drivers of dispersal is critical for wildlife conservation but is rare for long-lived marine mammal species with large geographic ranges. We fit multi-state mark-recapture models to resighting data of 369 known-aged Steller sea lion (Eumetopias jubatus) females marked as pups on their natal rookeries in southeastern Alaska from 1994-2005 and monitored from 2001-15. We estimated probabilities of females being first observed parous at their natal site (natal philopatry), and of not moving breeding...
Sharks are a diverse group of mobile predators that forage across varied spatial scales and have the potential to influence food web dynamics. The ecological consequences of recent declines in shark biomass may extend across broader geographic ranges if shark taxa display common behavioural traits. By tracking the original site of photosynthetic fixation of carbon atoms that were ultimately assimilated into muscle tissues of 5,394 sharks from 114 species, we identify globally consistent biogeographic traits...
Data from: Water, water everywhere: environmental DNA can unlock population structure in elusive marine speciesKim M. Parsons, Meredith Everett, Marilyn Dahlheim & Linda Park
Determining management units for natural populations is critical for effective conservation and management. However, collecting the requisite tissue samples for population genetic analyses remains the primary limiting factor for a number of marine species. The harbor porpoise (Phocoena phocoena), one of the smallest cetaceans in the Northern Hemisphere, is a primary example. These elusive, highly mobile small animals confound traditional approaches of collecting tissue samples for genetic analyses, yet their nearshore habitat makes them highly...
Data from: Contrasting patterns of genetic diversity at three different genetic markers in a marine mammal metapopulationJoseph I Hoffman, Kanchon Dasmahapatra, William Amos, Caleb Phillips, Tom Gelatt & John Bickham
Many studies use genetic markers to explore population structure and variability within species. However, only a minority use more than one type of marker and, despite increasing evidence of a strong link between heterozygosity and individual fitness, few ask whether diversity correlates with population trajectory. To address these issues, we analysed data from the Steller's sea lion, Eumetiopias jubatus, where three stocks are distributed over a vast geographic range and where both genetic samples and...
National Marine Fisheries Service401
Northeast Fisheries Science Center43
Pacific Islands Fisheries Science Center37
Gulf of Mexico Fishery Management Council31
South Atlantic Fishery Management Council15
Southwest Fisheries Science Center11
North Atlantic Salmon Conservation Organization11
Northwest Fisheries Science Center8
Alaska Fisheries Science Center7
Oregon State University5