Skip to main content
USGS - science for a changing world
Advanced Search

Filters: Tags: {"type":"Subject"} (X)

875 results (24ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Schemes
Tags (with Type=Subject )
View Results as: JSON ATOM CSV
Abstract: As the climate changes, human land use may impede species from tracking areas with suitable climates. Maintaining connectivity between areas of different temperatures could allow organisms to move along temperature gradients and allow species to continue to occupy the same temperature space as the climate warms. We used a coarse-filter approach to identify broad corridors for movement between areas where human influence is low while simultaneously routing the corridors along present-day spatial gradients of temperature. We modified a cost–distance algorithm to model these corridors and tested the model with data on current land-use and climate patterns in the Pacific Northwest of the United States. The...
thumbnail
To evaluate the potential effects of climate change on wildlife habitat and ecological integrity in the northeastern United States from 2010 to 2080, a University of Massachusetts Amherst team derived a set of climate projections at a fine spatial resolution for the entire Northeast. The projections are based upon publicly available climate models.This dataset represents the growing season degree days (number of days in which the average temperature is > 10 degrees C) using one of two IPCC greenhouse gas concentration scenarios (RCP8.5). The dataset is intended to represent typical growing season degree days for the year 2060 rather than the actual growing season degree days. MAP UNITS ARE THE SUM OF DEGREES THAT...
thumbnail
Synopsis: This study evaluates whether previous observations of a higher percentage of parasitism and parasitoid diversity in a complex agricultural landscape, relative to a simple landscape, represent a general phenomenon. Rates of parasitism and parasitoid diversity of the armyworm (Pseudaletia unipuncta) were assessed in three replicate (Onondaga, Ingham, and Benton) regions in southern Michigan. Within each region, a simple landscape (primarily cropland) and a complex landscape (cropland intermixed with mid and late successional noncrop habitats) were identified through analysis of aerial photographs. In each landscape, three maize fields were selected, and second to fourth instar P. unipuncta were released...
thumbnail
To evaluate the potential effects of climate change on wildlife habitat and ecological integrity in the northeastern United States from 2010 to 2080, a University of Massachusetts Amherst team derived a set of climate projections at a fine spatial resolution for the entire Northeast. The projections are based upon publicly available climate models.This dataset represents the growing season degree days (number of days in which the average temperature is > 10 degrees C) using one of two IPCC greenhouse gas concentration scenarios (RCP4.5). The dataset is intended to represent typical growing season degree days for the year 2080 rather than the actual growing season degree days. MAP UNITS ARE THE SUM OF DEGREES THAT...
thumbnail
Northeastern States region of the National Fish Habitat Partnership Maine New Hampshire Vermont New York Massachusetts Rhode Island Connecticut
thumbnail
This dataset is one of a dozen or so datasets that provide the basis for a vulnerability assessment of the Great Northern LCC that examines land use and climate changes at landscape scales, for the full LCC boundary. It provides a measure of vulnerability based on biome velocity and using a terrestrial (moving window) anlaysis. The values range from 0 to 1 and are unitless, where Vhg = Eh x (1-Ag). The original floating point values ranging from 0-1.0 were multiplied by 100 and converted to integer format for this dataset.
thumbnail
This dataset is one of a dozen or so datasets that provide the basis for a vulnerability assessment of the Great Northern LCC that examines land use and climate changes at landscape scales, for the full LCC boundary. It provides a measure of vulnerability based on temperature change using a watershed-based analysis. The values range from 0 to 1 and are unitless, where Vtw = Et x (1-Aw). The original floating point values ranging from 0-1.0 were multiplied by 100 and converted to integer format for this dataset.
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...
thumbnail
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...
thumbnail
Synopsis: This study analyzed the effects of vegetation change on hydrological fluctuations in the Columbia River basin over the last century using two land cover scenarios. The first scenario was a reconstruction of historical land cover vegetation, c. 1900. The second scenario was more recent land cover as estimated from remote sensing data for 1990. The results show that, hydrologically, the most important vegetation-related change has been a general tendency towards decreased vegetation maturity in the forested areas of the basin. This general trend represents a balance between the effects of logging and fire suppression. In those areas where forest maturity has been reduced as a result of logging, wintertime...
thumbnail
Synopsis: Using multi-scale seasonal models, this study explored how broad scale landscape context and local resource heterogeneity influenced local resource selection among threatened forest-dwelling woodland caribou in southern Quebec. Caribou consistently avoided roads, however researchers identified thresholds in road proximity effects. The threshold distance at which caribou avoid roads is 1.25 km for active roads and 0.75 km from derelict roads. Open lichen woodlands were an important cover type for caribou during winter and spring, whereas deciduous forests, wetlands, and even young disturbed stands became important during calving and summer. Landscape cover type and amount explained more variation in habitat...
thumbnail
Synopsis: In an attempt to better characterize the influence of human settlement patterns on wolf distribution, this paper examined how radio-collared gray wolves responded to different road types and human presence at the boundaries of Kenai National Wildlife Refuge in south-central Alaska. Wolves tended to avoid oilfield access roads that were open to the public, but were attracted to gated pipeline access roads and secondary gravel roads with limited human use. The low use access and secondary roads likely provided an easy travel corridor for wolves. Prior to intensive trapping and hunting from 1978-1979, wolves demonstrated little territorial adjustment in response to a heavily used highway. However, only after...
Overview presentation of the goals and programatic structure of the Klamath Basin Tribal Youth Program. Including an overview of the weekly structure and activitie within the program. The goal was to expose the students to a range of natural resource and climate change relate issues confronting tribes, organizations, agencies, and communities of the Klamath Basin and incorporate personal stories with available scientific information.
thumbnail
UW_Olallie_photo_metadata & image files: These are the raw timelapse photographs. The date/time stamp is inaccurate for the camera deployed in the open (at the SNOTEL) due to a programming error. This timestamp is one day early (i.e., subtract 1 day from the timestamp when using these data). Also available is metadata for two timelapse cameras and their associated snow depth poles (two visible in each camera's field of view) deployed at Olallie Meadows SNOTEL during water year 2015. One camera was deployed in the open area that is the Olallie Meadows SNOTEL station (the snow pillow is in the field of view). The other camera was deployed in the adjacent forest, approximately 60 m to the southeast of the SNOTEL....
thumbnail
Aging infrastructure is creating a pressing national need to align priorities between civil engineering and other interests. Restoring ecological connectivity of river networks that are fragmented by dams and road crossings has become a prominent objective for environmental managers across the country. A mature decision-support framework and newly available data on the condition of dams throughout the Lake Michigan basin offer unique opportunities to test for potential cost-efficiency gains from sharing the costs of removing decrepit dams between environmental and engineering organizations. At sites where these interests align, genuine win-win scenarios could advance both ecological connectivity and infrastructure...
thumbnail
This project will create a targeted and easily understandable guide to tools that support landscape-level planning in the face of climate change for NPLCC partners. The guide will build on previous NPLCC research on decision support needs with an emphasis on tools currently in use in the region. A survey of NPLCC partners will discover who is currently using or planning to use tools in the region, tools they are using, how well these tools are meeting their needs, and regional and outside experts engaged in tool use. Additional tools research will provide information on tools not currently in use in the region that could also provide needed functionality.
thumbnail
The central objective of this project was to answer two questions: 1) how downscaled climate datasets, modeled vegetation changes, and information on estimated species sensitivities can be used to develop climate change adaptation strategies, and 2) how model results and datasets can be made more useful for informing the management of species and landscapes. To answer these questions, we identified enthusiastic partners working in two very different complex landscapes within the North Pacific Landscape Conservation Cooperative (NPLCC): 1) the British Columbia Park system, specifically the midcoast region, and 2) the National Wildlife Refuge system in the Willamette Valley, OR. The issues and concerns of each group...
thumbnail
The Quartz Valley Indian Reservation will partner with tribes, federal agencies and higher education institutions in the Klamath Basin on a tribal youth intern program for the summer of 2014. This program will build on current efforts to integrate western science and TEK for climate change planning and adaptation in the Klamath Basin.
thumbnail
The Quartz Valley Indian Reservation will partner with tribes, federal agencies and higher education institutions in the Klamath Basin on a tribal youth intern program for the summer of 2014. This program will build on current efforts to integrate western science and TEK for climate change planning and adaptation in the Klamath Basin.
thumbnail
The Western Governors’ Association (WGA) sponsored an assessment of crucial habitats which will be used for the evaluation of landscape-scale energy, land use, and transportation projects throughout the western United States. The main product of the WGA’s assessment is an easily accessible online system of maps displaying crucial habitats and corridors known as the Crucial Habitat Assessment Tool (CHAT; http://www.westgovchat.org/).Crucial habitats were based on factors such as species of concern, species of economic and recreational importance, special ecological systems and habitat types, habitat corridors, native species richness, and ecological integrity (i.e., unfragmented habitats). All of these factors are...


map background search result map search result map Minimum habitat requirements for establishing translocated cutthroat trout populations. Effects of land cover change on streamflow in the interior Columbia River Basin (USA and Canada). Assessing the influence of resource co-variates at multiple spatial scales: an application to forest-dwelling caribou faced with intensive human activity. Gray wolf response to refuge boundaries and roads in Alaska. Does agricultural landscape structure affect parasistism and parasitoid diversity? Growing Season Degree Days for Northeast, Projected for 2080, RCP 4.5, Ensemble GCM Results Growing Season Degree Days for Northeast, Projected for 2060, RCP 8.5, Ensemble GCM Results Incorporating ecological integrity into the Western Governors’ assessment of aquatic crucial habitats in Washington and Oregon NPLCC Guide to Planning Tools Product: Applying Vulnerability Assessment Tools to Plan for Climate Adaptation:  Case Studies in the North Pacific LCC - Final Report Final Report: Cultural Adaptation Through Traditional Ecological Knowledge and Climate Change Climate change and Tribal Ecological Knowledge Summer Internship Presentation Vhg: terrestrially-defined vulnerability, biome velocity for Great Northern LCC Vtw: hydrologically-defined vulnerability, temperature change for Great Northern LCC Northeastern States Timelapse photos at SNOTEL station, locations, and associated metadata, Ollalie Meadows, Wash., 2015 Optimization at the infrastructure-connectivity nexus: boosting cost-efficiency of restoration using dam condition data for Lake Michigan Timelapse photos at SNOTEL station, locations, and associated metadata, Ollalie Meadows, Wash., 2015 Assessing the influence of resource co-variates at multiple spatial scales: an application to forest-dwelling caribou faced with intensive human activity. Does agricultural landscape structure affect parasistism and parasitoid diversity? Final Report: Cultural Adaptation Through Traditional Ecological Knowledge and Climate Change Climate change and Tribal Ecological Knowledge Summer Internship Presentation Optimization at the infrastructure-connectivity nexus: boosting cost-efficiency of restoration using dam condition data for Lake Michigan Minimum habitat requirements for establishing translocated cutthroat trout populations. Gray wolf response to refuge boundaries and roads in Alaska. Northeastern States Effects of land cover change on streamflow in the interior Columbia River Basin (USA and Canada). Growing Season Degree Days for Northeast, Projected for 2080, RCP 4.5, Ensemble GCM Results Growing Season Degree Days for Northeast, Projected for 2060, RCP 8.5, Ensemble GCM Results Incorporating ecological integrity into the Western Governors’ assessment of aquatic crucial habitats in Washington and Oregon Product: Applying Vulnerability Assessment Tools to Plan for Climate Adaptation:  Case Studies in the North Pacific LCC - Final Report Vhg: terrestrially-defined vulnerability, biome velocity for Great Northern LCC NPLCC Guide to Planning Tools Vtw: hydrologically-defined vulnerability, temperature change for Great Northern LCC