Filters: Tags: bull trout (X) > Types: Downloadable (X)
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Using the results of the flood risk due to change in winter temperature change, areas with low winter precipitation are mosaiced onto the flood risk to show areas that have the potential for flood risk and areas with low precipitation that are precluded from consideration for flood risk.
Bull trout key ecological attributes (burn probability, 303(d) waters, fish barriers, flood risk, water temperature increase and aquatic invasives) were added together to determine an overall score for the analysis unit within the bull trout range.
Types: Downloadable;
Tags: BLM,
Bull Trout,
Bureau of Land Management,
Cumulative Indicator Score,
DOI,
This GIS dataset is the primary data product produced for the NW Climate Science Center-funded project, "Rangewide climate vulnerability assessment for threatened Bull Trout" (FRESC Study ID 851). We used predictions of temperatures in streams across approximately two-thirds of the species' range in the U.S. to map coldwater streams or “patches” suitable for spawning and early rearing of Bull Trout. Each patch consists of streams with contiguous reaches of cold water. Patches were delineated using medium resolution National Hydrography Dataset streams containing modeled temperatures available at 1 km intervals, as provided by the NorWeST project (http://www.fs.fed.us/rm/boise/AWAE/projects/NorWeST.html).Once the...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Bull trout,
Clark Fork River,
Clearwater River,
Climate change,
Columbia River,
The number of fish barriers within the analysis unit was analyzed for the bull trout range within the ecoregion.
These data identify (in general) the areas where final critical habitat for the bull trout (Salvelinus confluentus) occur.
Using temperature range derived in earlier datasets for the range of bull trout in the ecoregion, the following assumptions are made of a future climate scenario.Suitable is Marginal is current Mean July Air Temp + 1 Standard Deviation - Max July Air Temp (32.4 - 33.9*C)Unsuitable is > current Max July Air Temp (> 33.9*C)Results are rolled up to an analysis unit.
303(d) listed waterways was downloaded from the EPA website. Areas listed as 303(d) were extracted and compared to the overall amount of non 303(d) waterways to establish a percentage of waterways that were 303(d).
Using temperature range derived in earlier datasets for the range of bull trout in the ecoregion, the following assumptions are made of a future climate scenario.Suitable is Marginal is current Mean July Air Temp + 1 Standard Deviation - Max July Air Temp (32.4 - 33.9*C)Unsuitable is > current Max July Air Temp (> 33.9*C)Results are rolled up to an analysis unit.
Winter precipitation was extracted from the PRISM 1980-2010 precipitation dataset for the months of November through March. The extent of the bull trout range was used to mask the analysis. Using Zonal Statistics the mean for the November - March timeframe was calculated. Binning the data into 10 classes, the lowest class was determined to be not at risk for winter flooding (based on Haak et al. 2010 methodology).
The number of fish barriers within the analysis unit was analyzed for the bull trout range within the ecoregion.
The current distribution of bull trout populations in the lower 48 states outside of SE Alaska and Canada is highly fragmented, occupying
only
portions
of
the
historically
occupied
watersheds.
In
non‐coastal
areas,
they
typically
remain
only
in
the
coldest
tributaries.
Like
most
native
salmonids
in
the
west,
bull trout
distribution,
abundance,
and
habitat
quality have
declined
range‐wide.
For
example,
in
Idaho,
Nevada
and
Montana,
about
one‐third
of
the
currently
occupied
habitat
supports populations at or near habitat capacity, while two-thirds support populations significantly below potential.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: bull trout,
western native trout initiative,
wnti
Winter flooding risk was measured by using the mean January - March temperature from PRISM 1980-2010 dataset. The future temperature was increased 3 degress C (based on Haak et al. 2010 methodology). Mean current and future temperatures were extracted for Bull trout analysis units. Temperatures below -1 degrees C were considered snow dominant, -1 to +1 degrees C were considered transient and greater than 1 degree were considered rain dominant.For winter flood risk:Stays Snow Dominant = Low RiskSnow Dominant to Transient = Moderate RiskSnow Dominant to Rain Dominant = High RiskStays Transient = Low RiskTransient - Rain Dominant = Moderate RiskStays Rain Dominant = Low Risk
This dataset is a record of fish distribution and activity for BULL TROUT contained in the StreamNet database. This feature class was created based on linear event data extracted from the StreamNet database on February 2, 2009. Distribution is based upon the best professional judgement of local fish biologists, in the Pacific Northwest Region (Oregon, Washington, and Idaho). These data were collected by biologists at the state fish & wildlife agencies of Washington (WDFW), Oregon (ODFW) and Idaho (IDFG). Data were then compiled by StreamNet staff into paper maps or event tables at the state level. These event tables were submitted to the StreamNet regional staff at Pacific States Marine Fisheries Commision (PSMFC)...
The FSim burn probability was used to determine the burn probability of the bull trout range in the ecoregion. This layer was used to examine wildfire risk to areas within the bull trout range.
These data identify (in general) the areas where critical habitat for the bull trout (Salvelinus confluentus) occur.
Using the results of the flood risk due to change in winter temperature change, areas with low winter precipitation are mosaiced onto the flood risk to show areas that have the potential for flood risk and areas with low precipitation that are precluded from consideration for flood risk.
This raster was created by merging the bull trout critical habitat lakes and streams from USFWS and bull trout streams from Streamnet. There are mostly the same but there are some differences. The raster was used in spatial operations where a raster version of bull trout distribution were required.
Winter flooding risk was measured by using the mean January - March temperature from PRISM 1980-2010 dataset. The future temperature was increased 3 degress C (based on Haak et al. 2010 methodology). Mean current and future temperatures were extracted for Bull trout analysis units. Temperatures below -1 degrees C were considered snow dominant, -1 to +1 degrees C were considered transient and greater than 1 degree were considered rain dominant.For winter flood risk:Stays Snow Dominant = Low RiskSnow Dominant to Transient = Moderate RiskSnow Dominant to Rain Dominant = High RiskStays Transient = Low RiskTransient - Rain Dominant = Moderate RiskStays Rain Dominant = Low Risk
The FSim burn probability was used to determine the burn probability of the bull trout range in the ecoregion. This layer was used to examine wildfire risk to areas within the bull trout range.
Winter precipitation was extracted from the PRISM 1980-2010 precipitation dataset for the months of November through March. The extent of the bull trout range was used to mask the analysis. Using Zonal Statistics the mean for the November - March timeframe was calculated. Binning the data into 10 classes, the lowest class was determined to be not at risk for winter flooding (based on Haak et al. 2010 methodology).
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