Skip to main content
Advanced Search

Filters: Tags: Population & Habitat Evaluation/Projection (X)

253 results (391ms)   

Filters
Date Range
Extensions
Types
Contacts
Categories
Tag Types
Tag Schemes
View Results as: JSON ATOM CSV
thumbnail
FY2015Collaborators are investigating the effect of low rise dams water supply, ecosystem functions and health, and habitat for a wide range of organisms, including sage grouse. They are assessing the economic cost and attitudes of ranchers and managers towards both low-rise dams and proposed re-introductions of beavers. Remote sensing is used to identify locations of incised streams across the Great Basin.
thumbnail
We will apply indices of sagebrush ecological integrity, developed by WAFWA, to hierarchical population models of sage-grouse population rates of change over multiple decades to facilitate comprehensive understanding of the links between sagebrush ecosystem health and sagebrush obligate species from the lens of the Conservation Design Strategy. This research will investigate application of core area habitat concepts as it relates to sage-grouse population performance to manage lands within the sagebrush biome. The analysis framework and science deliverables developed from this study can be used as a basis to investigate the population performance of additional species of concern, beyond sage-grouse, in relation...
thumbnail
FY2017This dataset provides a near-real-time estimate of 2017 herbaceous annual cover with an emphasis on annual grass (Boyte and Wylie. 2016. Near-real-time cheatrass percent cover in the Northern Great Basin, USA, 2015. Rangelands 38:278-284.) This estimate was based on remotely sensed enhanced Moderate Resolution Imaging Spectroradiometer (eMODIS) Normalized Difference Vegetation Index (NDVI) data gathered through June 19, 2017. This is the second iteration of an early estimate of herbaceous annual cover for 2017 over the same geographic area. The previous dataset used eMODIS NDVI data gathered through May 1 (https://doi.org/10.5066/F7445JZ9). The pixel values for this most recent estimate ranged from 0 to100%...
thumbnail
FY2016This project will evaluate the effects of vegetation treatments on population connectivity, genetic diversity and gene flow of wildlife species across the full extent of the Great Basin LCC. The recently approved BLM and Forest Service Land Use Plan Amendments will implement millions of acres of treatments in support of greater sage-grouse conservation. It is essential to evaluate the potential benefits and risks of these treatments on the connectivity and fragmentation of the landscape for multiple non-target species. We will use a dynamic landscape model to simulate fire and treatments, allowing each to vary by type (e.g., juniper removal, prescribed fire), extent, and influence on vegetation and fuels....
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Academics & scientific researchers, Applications and Tools, CA1, CA1, CA1, All tags...
thumbnail
The project objectives are as follows: To map out current and future levels of habitat connectivity in the South Atlantic region, from the standpoint of multiple groups of terrestrial wildlife species; 2. To prioritize key corridors and linkage areas based on their relative importance and centrality within the overall habitat network and their relative influence on the viability of target wildlife populations; 3. To publish data layers representing the outcomes from the first two objectives, in such a way as to significantly improve conservation decision-making across the South Atlantic LCC region
thumbnail
This report summarizes activities and data collection outcomes for Cooperative Agreement Award F16AC01182, specifically those research activities conducted as a multi-scale assessment of the effects of juniper removal on songbird, small mammal, and raptor/corvid species. In 2017, we conducted 270 surveys for songbirds, 10 surveys for small mammals, and 77 surveys for avian predators that potentially affect greater sage-grouse. We detected 45 songbird species, 6 mammal species, and 9 species of aerial predators. Data collected by PhD student Aaron Young (aarony@uidaho.edu) will be used as part of a doctoral dissertation. Final products are expected to include a final report, a graduate student dissertation and associated...
We propose developing an Alaska node for the iMapInvases database, to be managed and maintained by AKNHP. Given that the most extensive efforts at assessing and controlling invasive animal species in Alaska has taken place within ABSI, we propose a pilot project using Alaska Maritime Refuge data to populate and test the database –recognizing of course this would likely take a commitment from the Refuge and/or ABSI staff. We imagine that the database and be established by fall of 2013 and current legacy data for invasive animals can be identified, prioritized and entered by May of 2014.
thumbnail
To elucidate these potential “bottom up” effects of climate changes to Arctic ungulates and evaluate the trophic mismatch hypothesis, the Arctic Landscape Conservation Cooperative (ALCC), the Bureau of Land Management (BLM), the U.S. Geological Survey (USGS), Teck, Inc., and the National Park Service provided funding in 2012-14 to incorporate the calving and summer range of the Western Arctic caribou herd (WAH) into an ongoing inter-agency research and monitoring effort to examine the influences of climate change on the nutrient dynamics of caribou forages. This work is leveraging existing projects on the North Slope of Alaska that are primarily funded through the USGS Changing Arctic Ecosystems Initiative. Field...
thumbnail
Our overarching questions are: (1) How much of the river water and water-borne constituents (i.e. sediment, nutrients, organic matter) from the Jago, Okpilak and Hulahula rivers are coming from glacier melt? (2) How do inputs from these rivers affect the downstream ecosystems? (3) How will loss of glaciers affect these ecosystems? The study will help elucidate how inputs from glacier-dominated arctic rivers differ from unglaciated rivers, through a combination of ground work, boat work, and remote sensing. In Phase One of this study, we intend to explore the relationship between glaciers and coastal ecosystems. Our goal in this phase-one study is not to answer these questions conclusively but rather improve our...
thumbnail
The USGS Southeast Ecological Science Center (SESC) Nonindigenous Aquatic Species (NAS) database provides records of sightings and capture data of non-native (introduced) aquatic species over the entire the United States (Benson 1999). For areas within the SALCC region, the NAS currently contains records dating back to 1885 for over 200 nonindigenous plant and animal species. This project seeks to utilize these data along with new GIS-based data on current and future (e.g. SLEUTH) landscape and climate parameters to develop models of invasive species introductions and dispersal across the SALCC region. Both multi- and single species models will be considered in these analyses. We will then utilize a formal decision-analytic...
thumbnail
Sea level rise (SLR) and disturbances from increased storm activity are expected to diminish coastal habitats available for sea turtle, seabird, shorebird, and beach mouse nesting by removing habitat as well as inundating nests during critical incubation periods. The goal of our proposed research is to evaluate past nesting patterns of fourteen coastal nesting species and predict future effects of sea level rise on nesting beaches along the South Atlantic Bight. Maps of coastal vulnerability to SLR combined with historical data sets of long-term and spatially extensive nesting habitat will lead to models that enhance our understanding of the complex environmental changes occurring from global climate change and...
thumbnail
The South Atlantic LCC is seeking technical assistance in the testing process for their newly chosen terrestrial natural resource indicators (https://www.fws.gov/science/catalog). For each ecosystem and the three indicators within each ecosystem, South Atlantic LCC staff and collaborators are seeking to answer the following: 1) How well does each indicator represent a variety of organisms and ecological attributes within the ecosystem and throughout a major portion of the LCC? What does it miss? 2) How well does combination of three indicators within each ecosystem represent a variety of organisms and ecological attributes within the ecosystem and throughout a major portion of the LCC? What do they miss? 3) How...
Water temperature plays a critical role in the health of pre-smolt salmon life stages, and changes in water temperature may be a strong driving factor on growth and survival of juvenile Chinook salmon. Climate is expected to warm substantially in the coming decades in western Alaska, potentially affecting juvenile salmon condition in freshwater habitats. This project investigates the variability in size-at-age and annual growth for juvenile Chinook salmon across the western Alaska landscape, the association of juvenile Chinook size-at-age or annual growth with spatial or temporal stream temperature gradients, and whether expected water temperature changes in western Alaska will affect juvenile Chinook salmon habitat...
thumbnail
Biodiversity in stream networks is threatened globally by interactions between habitat fragmentation and altered hydrologic regimes. In the Great Plains of North America, stream networks are fragmented by 19,000 anthropogenic barriers, and flow regimes are altered by surface water retention and groundwater extraction. We documented the distribution of anthropogenic barriers and dry stream segments in five basins covering the central Great Plains to assess effects of broad-scale environmental change on stream fish community structure and distribution of reproductive guilds. We used an information theoretic approach to rank competing models in which fragmentation, discharge magnitude, and percentage of time streams...
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2012, CATFISHES/MINNOWS, CO-01, CO-02, CO-03, All tags...
thumbnail
Potamodromous migrations, those that occur entirely in fresh waters, are made by a variety of minnows (Family Cyprinidae) in, and between, freshwater habitats around the world. These migrations most commonly are undertaken for purposes of breeding, feeding, or occupying specific habitats or refugia. There is a growing body of evidence that potamodromous migrations are undertaken by a number of cyprinids native to larger streams and rivers of the Great Plains region of central USA. Cross et al. (1985) observed that populations of Arkansas River shiner disappeared from large tributaries to the Arkansas River, in Kansas, as a result of dam construction and water withdrawal. They speculated that populations in these...
thumbnail
Genetic, demographic, and environmental processes affect natural populations synergistically, and understanding their interplay is crucial for the conservation of biodiversity. Stream fishes in metapopulations are particularly sensitive to habitat fragmentation because persistence depends on dispersal and colonization of new habitat but dispersal is constrained to stream networks. Great Plains streams are increasingly fragmented by water diversion and climate change, threatening connectivity of fish populations in this ecosystem. We used seven microsatellite loci to describe population and landscape genetic patterns across 614 individuals from 12 remaining populations of Arkansas darter ( Etheostoma cragini) in...
This project evaluates the effects of global climate change and sea level rise on estuarine intertidal habitat in the San Francisco Bay and the Pacific Flyway migratory waterbirds that rely on this habitat. Phase 2 of this project is a continuation of work to evaluate the effects of global climate change and sea level rise (SLR) on intertidal shoals in the San Francisco Bay Estuary and the migratory waterbirds that rely on this critically important resource in the Pacific Flyway. The primary objectives are to: 1) use downscaled global climate change models to translate SLR and climate scenarios into habitat quantity predictions through Delft3D and Dflow-FM (unstructured grid) geomorphic modeling; 2) model the response...
This project integrates fire risk models, species distribution models (SDMs) and population models with scenarios of future climate and land cover to project how the effects of climate-induced changes to species distributions and land use change will impact threatened species in fire-prone ecosystems. This project also identifies and prioritizes potential management responses to climate change (e.g. assisted colonization, fire management, land protection, dispersal corridors). Anticipated products include: 1) maps (digital and hard copy) of habitat suitability under current and future climate change, current and future projected urban growth and combinations of climate change and future projected urban growth, under...
Categories: Data, Project; Tags: 2011, Academics & scientific researchers, CA, CA-Southern, California Landscape Conservation Cooperative, All tags...
thumbnail
The importance of riparian ecosystems in semiarid and arid regions has generated interest in understanding processes that drive the distribution and abundance of dominant riparian plants. Changes in streamflow patterns downstream of dams have profoundly affected riparian vegetation composition and structure. For example, in the southwestern United States, flow regulation has contributed to the replacement of many riparian forests historically dominated by the native Populus fremontii (Fremont Cottonwood) and Salix gooddingii (Goodding’s Willow) by the exotic species Tamarix spp. (Salt Cedar). The proposed project will help guide reservoir release decision making to enhance downstream recruitment of native cottonwood...
thumbnail
Executive Summary: Evolution of policies that guide operation of individual reservoir systems begins with a relative flurry of activity associated with building of dams. Over perhaps a ten year period, operations are proposed in anticipation of construction, implemented when a dam is complete, and then modified as the effects, capabilities, and limitations of the project become better understood. After these initial adjustments, the policy process slowly begins to simmer. Operational changes are the driven by short-term influences that are largely episodic (e.g. droughts and floods) and long-term influences (e.g. social and economic factors) that affect operations more gradually.
map background search result map search result map Migration of Arkansas River Shiner and other Broadcast Spawning Fishes in the Canadian River, New Mexico-Texas Conservation status, genetics, and population vulnerability of Arkansas darter (Etheostoma cragini) in Colorado Managing water and riparian habitats on the Bill Williams River with scientific benefit for other desert river systems Conservation Priorities for Great Plains Fish Communities Based on Riverscape Connectivity and Genetic Integrity of Populations Testing South Atlantic LCC terrestrial indicators Evaluating Riparian and Meadow Vegetation Change Relative to Climate, Restoration and Land Management Effects of Treatments on the Connectivity and Fragmentation of Wildlife Populations across the Great Basin Mechanisms of aquatic species invasions across the SALCC Investigation of the effects of sea level rise on sea turtle, shorebird, seabird, and beach mouse nesting distributions within the South Atlantic Landscape Conservation Cooperative region Identifying and prioritizing key habitat connectivity areas for the South Atlantic region Resources: Managing water and riparian habitats on the Bill Williams River with scientific benefit for other desert river systems Near-real-time Herbaceous Annual Cover in the Great Basin Landscape-scale analysis of the relationship between juvenile Chinook size and growth and stream temperature in western Alaska (Feasibility Study) Evaluating the 'Bottom Up' Effects of Changing Habitats: Climate Changes, Vegetative Phenology, and the Nutrient Dynamics of Ungulate Forages Progress Report: Multi-scale assessment of wildlife response after juniper removal in a sagebrush steppe landscape Integrating studies of glacier dynamics and estuarine chemistry in the context of landscape change in the Arctic Refuge Understanding greater sage-grouse population trends from the lens of the WAFWA Conservation Design Strategy: implications for management of impacted, core, and growth opportunity areas within the sagebrush biome Managing water and riparian habitats on the Bill Williams River with scientific benefit for other desert river systems Resources: Managing water and riparian habitats on the Bill Williams River with scientific benefit for other desert river systems Integrating studies of glacier dynamics and estuarine chemistry in the context of landscape change in the Arctic Refuge Progress Report: Multi-scale assessment of wildlife response after juniper removal in a sagebrush steppe landscape Conservation status, genetics, and population vulnerability of Arkansas darter (Etheostoma cragini) in Colorado Evaluating Riparian and Meadow Vegetation Change Relative to Climate, Restoration and Land Management Evaluating the 'Bottom Up' Effects of Changing Habitats: Climate Changes, Vegetative Phenology, and the Nutrient Dynamics of Ungulate Forages Migration of Arkansas River Shiner and other Broadcast Spawning Fishes in the Canadian River, New Mexico-Texas Effects of Treatments on the Connectivity and Fragmentation of Wildlife Populations across the Great Basin Conservation Priorities for Great Plains Fish Communities Based on Riverscape Connectivity and Genetic Integrity of Populations Testing South Atlantic LCC terrestrial indicators Mechanisms of aquatic species invasions across the SALCC Investigation of the effects of sea level rise on sea turtle, shorebird, seabird, and beach mouse nesting distributions within the South Atlantic Landscape Conservation Cooperative region Identifying and prioritizing key habitat connectivity areas for the South Atlantic region Near-real-time Herbaceous Annual Cover in the Great Basin Understanding greater sage-grouse population trends from the lens of the WAFWA Conservation Design Strategy: implications for management of impacted, core, and growth opportunity areas within the sagebrush biome