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Wetlands occur along gradients of hydrologic and ecological connectivity and isolation, even within wetland types (e.g., forested, emergent marshes) and functional classes (e.g., ephemeral systems, permanent systems, etc.). Within a given watershed, the relative positions of wetlands and open-waters along these gradients influence the type and magnitude of their chemical, physical, and biological effects on down-gradient waters. In addition, the ways in which wetlands connect to the broader hydrological landscape, and the effects of such connectivity on down-gradient waters, depends largely upon climate, geology, and relief, the heterogeneity of which expands with increasing scale. Developing an understanding of...
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Geographically Isolated Wetlands (GIWs) occur along gradients of hydrologic and ecological connectivity and isolation, even within wetland types (e.g., forested, emergent marshes) and functional classes (e.g., ephemeral systems, permanent systems, etc.). Within a given watershed, the relative positions of wetlands and open-waters along these gradients influence the type and magnitude of their chemical, physical, and biological effects on downgradient waters. In addition, the ways in which GIWs connect to the broader hydrological landscape, and the effects of such connectivity on downgradient waters, depends largely upon climate, geology, and relief, the heterogeneity of which expands with increasing scale. Developing...
Categories: Data,
Project;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Active,
All Working Groups,
Ecosystems,
Geographically isolated wetlands, depressional wetlands, perimeter,
Water, All tags...
Water Connectivity,
Water Resources,
Wetlands, Fewer tags
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Wetland conservation in the Upper Mississippi River Basin (UMRB) is a priority for Federal, State, NGO, and Tribal land managers to support migratory bird habitat in Minnesota and Iowa. These wetlands, known as depressional wetlands, also provide ecosystem services associated with flood water storage and enhancing down-stream water quality by storing and processing nutrients. Understanding how conservation efforts and management strategies can impact both wildlife habitat and water quality/quantity issues in the UMRB is critical for helping this region adapt to future precipitation patterns. High intensity rainfall events can cause depressional wetlands to overflow and connect with Mississippi River tributaries....
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2022,
CASC,
Data Visualization & Tools,
Data Visualization & Tools,
Midwest, All tags...
Midwest CASC,
Projects by Region,
Science Tools for Managers,
Science Tools for Managers,
Water, Coasts and Ice,
Water, Coasts and Ice,
Wetlands,
Wetlands,
Wildlife and Plants, Fewer tags
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Aquatic features critical to watershed hydrology range widely in size from narrow, shallow streams to large, deep lakes. In this study we evaluated wetland, lake, and river systems across the Prairie Pothole Region to explore where pan-sharpened high-resolution (PSHR) imagery, relative to Landsat imagery, could provide additional data on surface water distribution and movement, missed by Landsat. We used the monthly Global Surface Water (GSW) Landsat product as well as surface water derived from Landsat imagery using a matched filtering algorithm (MF Landsat) to help consider how including partially inundated Landsat pixels as water influenced our findings. The PSHR outputs (and MF Landsat) were able to identify...
Tags: GeoEye-1,
Land Use Change,
Landsat 5,
Landsat 7,
Landsat 8, All tags...
Nebraska,
North Dakota,
Prairie Pothole Region,
QuickBird-2,
South Dakota,
USGS Science Data Catalog (SDC),
Worldview-2,
lakes,
rivers,
surface water,
wetlands, Fewer tags
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Abstract Globally, hydrologic modifications such as ditching and subsurface drainage have significantly reduced wetland water storage capacity (i.e., volume of surface water a wetland can retain) and consequent wetland functions. While wetland area has been well documented across many landscapes and used to guide restoration efforts, few studies have directly quantified the associated wetland storage capacity. Here, we present a novel raster-based approach to quantify both contemporary and potential (i.e., restorable) storage capacities of individual depressional basins across landscapes. We demonstrate the utility of this method by applying it to the Delmarva Peninsula, a region punctuated by both depressional...
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