Filters: Tags: Land use and Land cover (X) > Categories: Project (X)

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Headwater C fluxes This research focuses on understanding processes controlling temporal and spatial variability in aquatic carbon fluxes in headwater streams. Headwater streams are areas of active carbon cycling because of steep topographic gradients, complex soil and vegetation patterns, and an abundance of small lakes and streams. The project will combine information from the following major components: High-frequency measurements of aquatic carbon fluxes using in-stream sensors will provide information on temporal dynamics at unprecedented resolution. A geostatistical model will be developed to characterize relations between landscape type (e.g., wetlands, forest, tundra) and aquatic C dynamics and fluxes. Variations in fluxes... Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic Carbon, Carbon fluxes, Colorado, Geostatistics, Modeling, All tags... Rocky Mountain National Park, Rocky Mountains, Staging, Wetlands, land use and land cover, temporal dynamics, Fewer tags LUCAS modeling This research focuses on understanding the rates, causes, and consequences of land change across a range of geographic and temporal scales. Our emphasis is on developing alternative future projections and quantifying the impact on environmental systems, in particular, the role of land-use change on ecosystem carbon dynamics. This project supports the development of the Land-use and Carbon Scenario Simulator (LUCAS) model. LUCAS tracks changes in land use, land cover, land management, and disturbance, and their impacts on ecosystem carbon storage and flux by combining: A State-and-Transition Simulation Model (STSM) to simulate changes in land-use across a range of geographic scales. A Stock and Flow Model to track... Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, Carbon flux, Carbon stock, Conterminous United States, Hawaii, All tags... Land use and Land cover, Modeling, Pacific Northwest, Projections, Staging, State-and-transition simulation models, USGS, Fewer tags Suisun Marsh, CA: Net Ecosystem Carbon Balance Our research focuses on assessing the components of the Net Ecoystem Carbon Balance using the eddy covariance approach to measure atmospheric fluxes of heat, energy, carbon dioxide and methane and testing equipment and techniques to measure the tidal exchange of dissolved organic (DOC) and inorganic carbon (DIC). The atmospheric flux tower is located south of Solano Land Trust's Rush Ranch, a working ranch encompassing 2,070 acres of marsh and rolling grasslands that provides both recreational and educational experiences for the public (http://www.solanolandtrust.org/RushRanch.aspx). Lateral fluxes are being collected at the San Francisco Bay National Estuarine Research Reserve First Mallard water quality station... Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Annual variability, Aquatic Carbon, Atmospheric fluxes, Biogeochemistry, CH4 emissions, All tags... CO2 emissions, California, California Delta, Carbon balance, Carbon cycle, Carbon dynamics, Carbon flux, Carbon sequestration, Carbon stock, Land use and Land cover, Sacramento-San Joaquin Delta, Soil carbon, Staging, Suisun Marsh, Terrestrial carbon, Wetlands, Fewer tags How will Florida’s Biodiversity Respond to Climate Change? Florida is home to 50 endangered species, 23 National Wildlife Refuges, 9 national parks, and 119 state parks. Straddling both temperate and sub-tropical zones, the state is also unique in that it is a long and narrow peninsula, surrounded on three sides by warm water, creating a dynamic environment. The impacts of climate change, such as sea-level rise and severe storms, threaten the state’s unique biodiversity—yet managers are unsure how species will respond to these changes, which makes planning for the future difficult. In order to identify the impacts of climate change on Florida’s plants and wildlife, researchers developed regional climate scenarios identifying how temperature and precipitation patterns... Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: 2009, CASC, Climate change, Completed, La Florida, All tags... National CASC, National CASC, Plants, Plants, Projects by Region, Science Project, Water, Coasts and Ice, Water, Coasts and Ice, Wetlands, Wetlands, Wildlife and Plants, Wildlife and Plants, biodiversity, climate models, land use and land cover, Fewer tags Land-Use Threats and Protected Areas: A Scenario-Based, Landscape Level Approach Anthropogenic land use will likely present a greater challenge to biodiversity than climate change this century in the Pacific Northwest, USA. Even if species are equipped with the adaptive capacity to migrate in the face of a changing climate, they will likely encounter a human-dominated landscape as a major dispersal obstacle. Our goal was to identify, at the ecoregion-level, protected areas in close proximity to lands with a higher likelihood of future land-use conversion. Using a state-and-transition simulation model, we modeled spatially explicit (1 km2) land use from 2000 to 2100 under seven alternative land-use and emission scenarios for ecoregions in the Pacific Northwest. We analyzed scenario-based land-use... Categories: Project; Types: Journal Citation; Tags: Land use and Land cover, Land-use threats, Pacific Northwest, Protected areas, Scenarios