|
|
These data were used to examine drivers behind changes in water temperature downriver of dams across the western U.S. from 1995-2015 and the influence of such changes on rainbow trout recruitment and rainbow and brown trout adult length. First, we linked reservoir storage capacity and dam size to the warmest monthly water temperature per water year (WY) to assess the influence of low storage capacity (shallow reservoirs) on downstream water temperature. We then took results from previously published Generalized Linear Mixed Models (GLMM) that assessed the influence of physical and biological predictors (e.g., flow, trout density, reservoir metrics) on trout recruitment and adult size and added mean annual, maximum...
Tags: Arizona,
Bighorn River,
Colorado,
Colorado River,
Green River, All tags...
Idaho,
Kootenai River,
Madison River,
Missouri River,
Montana,
Muddy Creek,
New Mexico,
Oregon,
Owyhee River,
San Juan River,
South Fork Boise River,
USGS Science Data Catalog (SDC),
Utah,
brown trout,
brown trout adult length model,
dam,
dam height,
density metrics,
flow metrics,
rainbow trout,
rainbow trout adult length model,
rainbow trout recruitment model,
reservoir depth,
reservoir maximum capacity,
reservoir metrics,
reservoir storage,
river,
temperature data, Fewer tags
|
These data were used to examine the effectiveness of a non-lethal tool (Bioelectrical Impedance Analysis, "BIA") to estimate the physiological condition of endangered and threatened fishes in the Colorado River Basin. We conducted laboratory trials using hatchery-raised Humpback Chub and Bonytail and wild-captured Roundtail Chub, where fish were subjected to different feeding trials to elucidate a response in physiological condition and different temperature treatments to approximate field conditions. At the end of each 6-week trial fish were removed from tanks, lateral and dorsal measurements of BIA were taken, and fish were sacrificed for proximate composition analysis (lipid, protein, water, ash, dry mass, energy...
Types: Citation;
Tags: Arizona,
Bioelectrical Impedance Analysis,
Bonytail,
Colorado River Basin,
Dorsal measurements, All tags...
Fish condition,
Flagstaff,
Humpback Chub,
Laboratory trials,
Lateral measurements,
Mortality rates,
Proximate composition analysis,
Roundtail Chub,
Temperature correction equations,
Threatened and endangered species,
USGS Science Data Catalog (SDC), Fewer tags
|
This code was created to run a bioenergetics-based model of movement for Galapagos tortoises. It calculates energetic surplus or deficit at a daily time scale based on inputted temperature (6 times a day) and NDVI value (a single value per days), as well as the mass of an individual. It then uses dynamic programming to determine the optimal timing of movement between two foraging habitats, given time-series of NDVI in each habitat, and temperatures in both habitats and in a transition zone between habitats. The model relies on a variety of empirically derived relationships, including allometric relationships, derived for different groups of organisms (i.e., some relationships are based on analyses across multiples...
Categories: Software;
Types: Citation;
Tags: Bioenergetics-based model,
Daily time scale,
Dynamic programming,
Ecuador,
Energetic deficit, All tags...
Energetic surplus,
Espanola Island,
Galapagos Archipelago,
Galapagos Islands,
Model of movement,
NDVI values,
Normalized difference vegetation index values,
Santa Cruz Island,
Temperature,
migratory movement, Fewer tags
|
These data were compiled for a joint mark-recapture analysis of humpback chub and rainbow trout and include capture histories for both species, as well as environmental covariates associated with monthly time steps used to measure survival and growth and environmental covariates used to predict capture probability during each sampling trip. This worksheet also include parameter estimates and associated variance-covariance matrix from a prior analysis, which were combined with the output from the joint mark-recap analysis to predict equilibrium adult abundances under a variety of scenarios.
Types: Citation;
Tags: Arizona,
Colorado River,
Colorado River corrodor,
Grand Canyon,
Little Colorado River, All tags...
USGS Science Data Catalog (SDC),
capture histories,
environmental covariates,
humpback chub,
introduced species,
joint mark-recapture,
joint mark-recapture data,
modeling,
native species,
rainbow trout, Fewer tags
|
This dataset contains count and detection-nondetection data of Barred Owls from 106 historical breeding territories of Northern Spotted Owl territories (i.e. sites) in the Oregon Coast Ranges from 1995 to 2016. Data collected from 1995 to 2014 are partitioned into 2-week periods from 1 March – 31 August each year, totaling 12 possible sampling periods per year. Data collected from 2015 and 2016 are partitioned into 2-month periods from 1 March – 31 August, totaling 3 possible sampling periods each year. This dataset also describes the proportion of total area surveyed per site per sampling period in 2015 and 2016, as well as the proportion of each site with older coniferous forest in each year (1995 – 2016).
Categories: Data;
Tags: Barred Owl,
Dail-Madsen model,
Ecology,
Forestry,
N-mixture model, All tags...
Oregon,
Oregon Coast Range,
Strix varia,
USGS Science Data Catalog (SDC),
Wildlife Biology,
biota,
detection probability,
integrated population model,
occupancy,
unmarked data, Fewer tags
|
View more...
|
