Skip to main content
Advanced Search

Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Northwest CASC > FY 2011 Projects > Rangewide Climate Vulnerability Assessment for Threatened Bull Trout ( Show direct descendants )

11 results (55ms)   

Location

Folder
ROOT
_ScienceBase Catalog
__National and Regional Climate Adaptation Science Centers
___Northwest CASC
____FY 2011 Projects
_____Rangewide Climate Vulnerability Assessment for Threatened Bull Trout
Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
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...
Nov 26, 2013 presentation by Seth Wenger, Trout Unlimited; w/ Dan Isaak, USFS Rocky Mountain Research Station & Jason Dunham, USGS, Forest & Rangeland Ecosystem Science Cntr. The presentation explains an analytic approach that calculates a full distribution of possible outcomes for a species; and permits ready graphical display of uncertainty for individual locations and of total habitat. This is based on the journal publication, "Probabilistic accounting of uncertainty in forecasts of species distributions under climate change," and a bull trout suitable habitat analysis is used to illustrate methods. See: Global Change Biology, DOI:10.1111/gcb.12294 Sponsored by the Northwest Climate Science Center and the Pacific...
Abstract (from http://www.nrcresearchpress.com/doi/abs/10.1139/cjfas-2014-0098#.VN_BFGjF_gl): Linked atmospheric and wildfire changes will complicate future management of native coldwater fishes in fire-prone landscapes, and new approaches to management that incorporate uncertainty are needed to address this challenge. We used a Bayesian network (BN) approach to evaluate population vulnerability of bull trout ( Salvelinus confluentus) in the Wenatchee River basin, Washington, USA, under current and future climate and fire scenarios. The BN was based on modeled estimates of wildfire, water temperature, and physical habitat prior to, and following, simulated fires throughout the basin. We found that bull trout population...
Bull Trout is the most cold-adapted fish in freshwaters of the Pacific Northwest. The species is listed as threatened under the U.S. Endangered Species Act, but climate warming may place the species at further risk. Climate warming may lead to warming of streams in summer and increasing probability of floods in winter, leading to widespread loss of habitat projected for Bull Trout. This project sought to further elaborate how these climate-related threats influence Bull Trout across five western states (OR, WA, ID, MT, NV). These states form the southern margin of the species’ range. We used predictions of temperatures in streams across approximately two-thirds of this extent to map coldwater streams or “patches”...
Parent Project: Range-Wide Climate Vulnerability Assessment for Threatened Bull Trout Publication Abstract: Forecasts of species distributions under future climates are inherently uncertain, but there have been few attempts to describe this uncertainty comprehensively in a probabilistic manner. We developed a Monte Carlo approach that accounts for uncertainty within generalized linear regression models (parameter uncertainty and residual error), uncertainty among competing models (model uncertainty), and uncertainty in future climate conditions (climate uncertainty) to produce site-specific frequency distributions of occurrence probabilities across a species’ range. We illustrated the method by forecasting suitable...
This update was provided to FWS on March 21, 2013. The assessment incorporates an evaluation of climate and non-climate threats, and potential interactions among them to evaluate potential bull trout persistence. In summary, it includes the following steps: 1) Map suitable habitat "patches" across the species' range in the conterminous United States; 2) Attribute patches with information on local and climate related threats; 3) Map and attribute migratory habitats for the species and their relationship to "patches;" and 4) model persistence of bull trout in relation to local and climate related threats in patches and migratory habitats. For more information, contact Jason Dunham, U.S. Geological Survey, Forest...


    map background search result map search result map Stream patches of suitable Bull Trout habitat and associated patch variables Stream patches of suitable Bull Trout habitat and associated patch variables