Filters: Tags: Population dynamics (X)9,079 results (22ms)
This dataset contains information from visual encounter surveys conducted between 2012 and 2016 by USGS as part of an ongoing Oregon spotted frog (Rana pretiosa) monitoring effort in the Oregon Cascade Mountain Range. We surveyed 91 sites using a rotating frame design in the Klamath and Deschutes Basins, Oregon, which encompass most of the species' core extant range. Data consist of spotted frog counts aggregated by date, location, and life stage, as well as data on environmental conditions at the time of each survey.
These data are .csv files of tagged sea otter re-sighting locations (henceforth, resights) collected in the field using a combination of VHF radio telemetry and direct observation using high powered (80x) telescopes. Sea otters were tracked by shore or boat-based observers from the date of tagging until the time of radio battery failure, the animal’s death, or the end of the project, whichever comes first. The frequency of re-sighting was opportunistic, depending on logistical factors such as coastal access, but generally ranged from daily to weekly. Location coordinates are reported latitude and longitude as well as X and Y coordinates in the projection/datum California Teale-Albers NAD 1927. The file contains...
Baltic Macoma: Abundance and distribution of an important winter food of diving ducks in Chesapeake Bay
Seasonal population dynamics of Halipegus occidualis and Halipegus eccentricus (Digenea: Hemiuridae) in their amphibian host, Rana clamitans
Acid deposition from the Russian Kola Peninsula: Are sensitive fish populations in north-eastern Finnish Lapland affected?
Report of the Study Group on Management Strategies for Baltic Fish Stocks. Charlottenlund, Denmark 9-12 February 1998
Dynamics of reproduction by hatchery-origin lake trout (Salvelinus namaycush) at Stony Island Reef, Lake Ontario
Population dynamics (1869-1994), demography, and home ranges of the lynx in Bialowieza Primeval Forest (Poland and Belarus)