|
|
In large river ecosystems, the timing, extent, duration and frequency of floodplain inundation greatly affect the quality of fish and wildlife habitat and the supply of important ecosystem goods and services. Seasonal high flows provide connectivity from the river to the floodplain, and seasonal inundation of the floodplain governs ecosystem structure and function. River regulation and other forms of hydrologic alteration have altered the connectivity of many rivers with their adjacent floodplain – impacting the function of wetlands on the floodplain and in turn, impacting the mainstem river function. Conservation and management of remaining floodplain resources can be improved through a better understanding of...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Conservation planning,
Data,
Data Acquisition and Development,
LCC Network Science Catalog,
Landsat Inundation Frequency Extent, All tags...
Population and Habitat Evaluation/Projection,
biota,
completed,
environment,
flood frequency,
floodplain,
frequency,
geoscientificInformation,
inlandWaters,
inundation,
landsat,
planningCadastre,
river, Fewer tags
|
Development of a model to identify areas within the Mississippi Alluvial Valley that are suitable for alligator gar.
Categories: Data;
Tags: Consevation design,
Decision support,
LCC Network Science Catalog,
Population and Habitat Evaluation/Projection,
Report, All tags...
biota,
completed,
environment,
geoscientificInformation,
inlandWaters,
planningCadastre, Fewer tags
|
A landscape level AG spawning suitability data layer was developed to screen for landscape level features indicating locations that may be suitable for AG spawning within the lower Mississippi river corridor. Suitability was determined using a combination of inundation frequency, land cover, and thermal characteristics derived from related landscape level analyses (see below). The result for each evaluation was coded to display the predicted suitability for AG spawning . Habitat suitablility was informed by an alligator gar telemetry project on the St. Catherine Creek National Wildlife Refuge south of Natchez, MS. Approximately 20 fish were tagged in 2010, 2012 and 2013 and movement patterns on the floodplain were...
Categories: Data;
Tags: Consevation design,
Data,
Decision support,
LCC Network Science Catalog,
Population and Habitat Evaluation/Projection, All tags...
biota,
completed,
environment,
geoscientificInformation,
inlandWaters,
planningCadastre, Fewer tags
|
The alligator gar (Atractosteus spatula; AG) is a large, long-lived, physostomous fish that prefer slow-moving rivers, bayous, and oxbows most of the year, and require access to inundated floodplains or wetland vegetation for spawning and nursery habitats (Inebnit 2009; Kluender 2011, Buckmeier 2013). Historically, AG were distributed throughout the central U.S., ranging from Oklahoma southward to the Gulf of Mexico but more recently, abundances have declined and AG is now considered vulnerable to localized extirpation (Ferrara 2001) . Several authors have cited habitat alteration and overexploitation as the most important factors in the pervasive decline in abundance (Robinson and Buchanan 1988; Simon and Wallus...
Categories: Data;
Tags: Consevation design,
Decision support,
LCC Network Science Catalog,
Population and Habitat Evaluation/Projection,
Report, All tags...
biota,
completed,
environment,
geoscientificInformation,
planningCadastre, Fewer tags
|
This project maps floodplain inundation frequency at the landscape scale in the south central United States. Using 15-40 images per Landsat scene, we established a wide range of possible flood frequencies across a variety of rising and falling river stages. This method represents a flexible approach that can be configured to define habitat availability for a variety of terrestrial and aquatic species.
Categories: Data,
Project;
Tags: Completed,
Conservation planning,
Data Acquisition and Development,
Datasets/Database,
LCC Network Science Catalog, All tags...
Population and Habitat Evaluation/Projection,
Project,
biota,
environment,
geoscientificInformation,
inlandWaters, Fewer tags
|
View more...
|
