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Highlighted Publications

Last Update: 2017-04-27
Decadal declines in avian herbivore reproduction: density-dependent nutrition and phenological mismatch in the arctic [Details] [Full Publication]
Tracer-based evidence of heterogeneity in subsurface flow and storage within a boreal hillslope [Details] [Full Publication]
Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus) [Details] [Full Publication]
Potential effects of permafrost thaw on arctic river ecosystems [Details] [Full Publication]

Highlighted Data

Last Update: 2017-04-28
Gulf of Alaska Shelf and Slope Iron and Nitrate Data, Copper River Region, 2010

These are data from cruises carried out in April, May and July 2010 from the Copper River (AK) mouth to beyond the shelf break, ~150 km from shore. The focus of the dataset is the iron (Fe) data, intended to help infer the processes controlling concentrations of Fe. The data include concentrations of total dissolvable Fe (TDFe), dissolved Fe (dFe), nitrate, and salinity, temperature and fluorescence data (CTD) as background. This also includes sea surface height deviation data for a two month interval when a Yakutat eddy passed by the sampling site. Also included is a simple 1-dimensional numerical model used to simulate the the April DFe data assuming a DFe flux from shelf sediments, horizontal transport by eddy diffusion, and removal by scavenging. Data from eight model simulations are also included.

Gulf Watch Alaska Nearshore Component: Black Oystercatcher Nest Density and Chick Diets Data from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park, 2006-2016

This data is part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe black oystercatcher nest site and chick provisioning observations conducted in the northern Gulf of Alaska within the GWA program. The data consists of three files: 1. black oystercatcher nest counts from transects surveyed in study areas, 2. black oystercatcher nest locations found along oystercatcher sampling transects and 3. species identification, counts, and sizes for hard-shelled prey remains collected from black oystercatcher nest sites.

Sampling date, nest site location, bird behavioral category, number of chicks and or eggs, presence of prey remains, and other relevant notes were recorded. Sites are in Alaska and include locations in the following blocks: Katmai National Park and Preserve, Kenai Fjords National Park and western Prince William Sound. There are five sets of oystercatcher survey transects centered around a rocky intertidal monitoring site in each block. The time interval includes 2006-2016.

The black oystercatcher was selected for inclusion into the monitoring program because: 1) it is a common and conspicuous member of the rocky and gravel intertidal marine communities of eastern Pacific shorelines, 2) it is completely dependent on nearshore marine habitats for all critical life history components including foraging, breeding, chick-rearing, and resting, 3) it serves as a "keystone" species that is important in structuring nearshore systems, and 4) it is highly susceptible to human disturbance. The species is considered a Management Indicator Species by the Chugach National Forest and a species of concern by the Alaska Shorebird Working Group and is widely recognized as a species representative of nearshore habitats and therefore particularly amenable to long term monitoring.

Greater White-Fronted Goose (Anser albifrons) Microsatellite DNA Data, Alaska, 1989-2006

This data set describes nuclear microsatellite genotypes derived from eight autosomal loci (BCA6, BCA9, BCA11, Aaμ1, CRG, OXY13, TSP1.20.09 and TSP1.20.46 ). A total of 115 Greater White-fronted Geese were examined for genotyping with samples coming from the three primary breeding locales within Alaska that represent the Pacific Flyway (Cook Inlet, Bristol Bay Lowlands, and the Yukon Delta, Western Alaska). The sex of most samples was determined in the field.

Publication:Genetic structure among greater white-fronted goose populations of the Pacific Flyway

Software

slope in the Susitna Basin - photo by Jamey Jones, USGS

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