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Quantitative Modeling

A requirement for managing a species, be it a common native species, a species of conservation concern, or an invasive species, is having some information on its distribution and potential drivers of distribution. Branch scientists have been tackling the question of where these types of species are and where they might be in the future. Focus species are as varied as the invasive tamarisk, Russian olive, Africanized honey bee and nutria to the federally threatened Lesser Prairie chicken and others. These and other species are modeled at a variety of spatial scales, from park or wildlife refuge to global levels. Models use various predictor layers that can include current and future climate layers (near- and long-term projections), remote-sensing derivatives (such as MODIS phenology metrics), land cover, topography, and anthropogenic features.

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A male sage grouse struts his stuff on the sage steppe.

Landscape Genetics of Sage Grouse

Greater and Gunnison sage-grouse populations are species considered for listing under the Endangered Species Act of 1973. Loss and fragmentation of sagebrush habitats are among the primary causes of decline in these species. A fundamental need for species conservation is to identify and subsequently maintain a set of connected populations. Landscape genetics combines the fields of population...
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Land Management Research Program, Fort Collins Science Center
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Landscape Genetics of Sage Grouse

Greater and Gunnison sage-grouse populations are species considered for listing under the Endangered Species Act of 1973. Loss and fragmentation of sagebrush habitats are among the primary causes of decline in these species. A fundamental need for species conservation is to identify and subsequently maintain a set of connected populations. Landscape genetics combines the fields of population...
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The sunset on the main city beach in Laguna Beach, CA.

Quantitative and Statistical Research Collaboration

Mathematical and statistical models are powerful research tools that play several important roles in conceptualizing and understanding the structure and dynamics of complicated ecological systems, including developing mechanistic hypotheses pertaining to ecological systems, designing studies that elucidate ecosystem structure and function, and extracting information from data.
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Ecosystems Mission Area, Species Management Research Program, Fort Collins Science Center
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Quantitative and Statistical Research Collaboration

Mathematical and statistical models are powerful research tools that play several important roles in conceptualizing and understanding the structure and dynamics of complicated ecological systems, including developing mechanistic hypotheses pertaining to ecological systems, designing studies that elucidate ecosystem structure and function, and extracting information from data.
Learn More
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A species distribution map of the United States

Resource for Advanced Modeling (RAM)

Branch scientists have developed the Resource for Advanced Modeling (RAM), a modeling facility for collaborative research both within the U.S. Geological Survey (USGS) and with the wider research community. The facility provides a collaborative working environment for up to 20 scientists from within the USGS and the wider research community. There are networked, wireless computing facilities with...
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Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Fort Collins Science Center
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Resource for Advanced Modeling (RAM)

Branch scientists have developed the Resource for Advanced Modeling (RAM), a modeling facility for collaborative research both within the U.S. Geological Survey (USGS) and with the wider research community. The facility provides a collaborative working environment for up to 20 scientists from within the USGS and the wider research community. There are networked, wireless computing facilities with...
Learn More
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Lionfish are spreading through the Western North Atlantic, Caribbean Sea, and the Gulf of Mexico

Developing Ecological Forecasting Models for Invasive Species

Forecasts of where species might be and what impacts they may have are necessary for management of invasive species. Researchers at FORT are using various approaches to provided needed information to resource managers to combat invasive plants, animals, and disease organisms.
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Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Fort Collins Science Center
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Developing Ecological Forecasting Models for Invasive Species

Forecasts of where species might be and what impacts they may have are necessary for management of invasive species. Researchers at FORT are using various approaches to provided needed information to resource managers to combat invasive plants, animals, and disease organisms.
Learn More
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sky with double rainbow above a plateau and field of sagebrush

Field of Sagebrush Dreams: Planting and Restoring Functional Sagebrush in Burned Landscapes

Increased wildfire-induced loss of sagebrush in North American shrublands are outpacing natural recovery and leading to substantial habitat loss for sagebrush-obligate species like sage-grouse. The products and information developed for this project will help restoration practitioners, biologists, and land managers evaluate the efficacy of sagebrush restoration approaches as well as their ability...
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Ecosystems Mission Area, Land Management Research Program, Forest and Rangeland Ecosystem Science Center, Fort Collins Science Center, Western Ecological Research Center (WERC), Wildland Fire Science
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Field of Sagebrush Dreams: Planting and Restoring Functional Sagebrush in Burned Landscapes

Increased wildfire-induced loss of sagebrush in North American shrublands are outpacing natural recovery and leading to substantial habitat loss for sagebrush-obligate species like sage-grouse. The products and information developed for this project will help restoration practitioners, biologists, and land managers evaluate the efficacy of sagebrush restoration approaches as well as their ability...
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Greater sage-grouse lek in central Wyoming

Multi-scale Statewide Wyoming Greater Sage-grouse Trends Determined by Population Viability Analysis

USGS scientists and partners investigated sage-grouse population trends in Wyoming and at multiple spatial scales.
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Land Management Research Program, Fort Collins Science Center
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Multi-scale Statewide Wyoming Greater Sage-grouse Trends Determined by Population Viability Analysis

USGS scientists and partners investigated sage-grouse population trends in Wyoming and at multiple spatial scales.
Learn More
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Sage grouse in the lower left hand corner. There are large fields and mountains in the background.

Modeling Seasonal Habitat Requirements and Population Viability for Greater Sage-grouse in Wyoming

USGS has developed Greater Sage-grouse habitat-selection models for the nesting, summer, late brood rearing, and winter life stages in Wyoming to assess habitat quality and responses change across large landscapes.
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Land Management Research Program, Fort Collins Science Center
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Modeling Seasonal Habitat Requirements and Population Viability for Greater Sage-grouse in Wyoming

USGS has developed Greater Sage-grouse habitat-selection models for the nesting, summer, late brood rearing, and winter life stages in Wyoming to assess habitat quality and responses change across large landscapes.
Learn More