Filters: Tags: Cutthroat Trout (X)50 results (78ms)
The cold-water climate shield: delineating refugia for preserving salmonid fishes through the 21st century
Abstract The distribution and future fate of ectothermic organisms in a warming world will be dictated by thermalscapes across landscapes. That is particularly true for stream fishes and cold-water species like trout, salmon, and char that are already constrained to high elevations and latitudes. The extreme climates in those environments also preclude invasions by most non-native species, so identifying especially cold habitats capable of absorbing future climate change while still supporting native populations would highlight important refugia. By coupling crowd-sourced biological datasets with high-resolution stream temperature scenarios, we delineate network refugia across >250 000 stream km in the Northern...
Evidence of Recent Climate Change within the Historic Range of Rio Grande Cutthroat Trout: Implications for Management and Future Persistence
Conclusions: In fragmented watersheds, macrohabitat attributes measured at the patch scale were far more effective in predicting trout translocation success than measurements taken at the landscape scale Thresholds/Learnings: As a course filter indicator of cutthroat trout translocation success, the study found that translocations have a greater than 50% chance of fruitful establishment in watersheds >14.7km2 in area. Synopsis: This study aimed to identify stream-scale and basin-scale macrohabitat attributes limiting successful translocation and persistence of native cutthroat trout populations in fragmented landscapes along the Rio Grande. The study developed models of habitat attributes measured at two scales...
Assessment of Headwater Isolation as a Conservation Strategy for Cutthroat Trout in the Absaroka Mountains of Wyoming
The first part of this webinar will provide an introduction on the need for the development of the Inland Cutthroat Trout Viewing and Editing Web Application. This includes information about the Cutthroat Conservation and Recovery Teams and the value of the Inland Cutthroat Protocol for maintaining current information on species and habitat status, as well as other benefits. The second part is a demonstration of the recently completed web application. This demonstration will cover the map navigation and stream attribute viewer, and editing capabilities, which include tabular attributes as well as geospatial data components. Cutthroat trout covered in this tool are Rio Grande, Colorado River, and Greenback, in each...
Evolutionarily Significant Unit (ESU) boundaries for Anadromous fish within the Western Oregon Plan Revision (WOPR) project area. Shows areas where species is a candidate or non-warranted along with threatened or endangered.BLM (Bureau of Land Management) WOPR (Western Oregon Plan Revision) FSH (Fish) PRMP (Proposed Resource Management Plan) ESU (Envolutionarily Significant Unit) NOAA (National Oceanic and Atmospheric Administration) This data is a PRMP release version of the data fsh_as_a_cutthroat_esu_poly.
Across the great divide: genetic forensics reveals misidentification of endangered cutthroat trout populations.
Accurate assessment of species identity is fundamental for conservation biology. Using molecular markers from the mitochondrial and nuclear genomes, we discovered that many putatively native populations of greenback cutthroat trout (Oncorhynchus clarkii stomias) comprised another subspecies of cutthroat trout, Colorado River cutthroat trout (Oncorhynchus clarkii pleuriticus). The error can be explained by the introduction of Colorado River cutthroat trout throughout the native range of greenback cutthroat trout in the late 19th and early 20th centuries by fish stocking activities. Our results suggest greenback cutthroat trout within its native range is at a higher risk of extinction than ever before despite conservation...
Dataset includes individual-specific genetic data describing the extent of hybridization between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss) in Wyoming.
Status conservation of salmonids in relation to hydrologic integrity in the Greater Yellowstone Ecosystem
Occurrence of native Colorado River cutthroat trout ( Oncorhynchus clarki pleuriticus ) in the Escalante River drainage, Utah
Field surveys were conducted during 1997 and 1998 documenting the distribution and abundance of Colorado River cutthroat trout (Oncorhynchus clarki pleuriticus) in Escalante River tributaries. This documented occurrence of native trout in the Escalante River drainage of southern Utah represents an expansion of the known historic range of this subspecies as reported before the 1990s. We found 5 populations of native trout ranging in biomass from 3.0 to 104.2 kg ha-1 and occupying 13.2 km of stream of 130 km of estimated historic habitat. Current distribution and abundance of Colorado River cutthroat trout were compared to early introductions of nonnative trout stocked for sport fishing purposes. Native cutthroat...
Factors Influencing the Distribution of American White Pelicans Foraging on the Yellowstone River, Yellowstone National Park, USA
Cutthroat trout (CT; Oncorhynchus clarki ssp.) are extremely imperiled owing to a variety of stressors. Changing climate is adding to these stressors that have already relegated CT in the Southern Rocky Mountains to less than 35% of their native habitat. The Rio Grande CT (O. c. virginalis) occupies 12% of its native range and is currently under review for ESA listing as federally threatened. Changing thermal regimes, hydroclimate, and disturbance regimes will continue to alter the remaining habitat of Rio Grande CT. An understanding the status and trends of Rio Grande CT thermal habitats and the vulnerability of these habitats to climate driven changes in temperature and stochastic disturbance regimes would enable...