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David Jones-Farrand

At-Risk Science Coordinator

The Species Index for aquatic ecosystems is based on ranges of aquatic and amphibious species pulled from a list of 398 U.S. FWS Trust Species. Area of Influence (AOI) range maps for each species were pulled from the USFWS’ Information for Planning and Consultation (IPaC) system, stacked, and summarized within 5-mile hexagons. The resulting layer was then clipped to the Middle South subregion boundary and filtered to floodplain habitats. Continuous data is classified into 4 classes: 0 = N/A (Uplands) 1 = No suspected presence of these Trust Species 2 = 0-90th percentile of hexagons 3 = Top 10% of hexagons
Stream hydrology and temperature are among the most influential regulators of life-history traits and community structure of aquatic organisms. Hydrologic and thermal gradients strongly affect individual fitness and ultimately species success by imposing fundamental constraints on behavior, metabolic rates, reproduction, growth and ecological interactions. Stream hydrology and water temperature are also among the most frequently altered components of lotic systems due to human activities and other environmental disturbance. Despite their critical role in sustaining native aquatic biodiversity, few studies have examined the cross-scale influence of hydrology and water temperature on freshwater biota using a multi-species...
Ratio of cell CVI values to Max CVI combined from Terrestrial & Aquatic CVI Ration maps. Data sets were combined using a Max function: MAX(CVI_t, CVI_a).
The Habitat Condition Index for terrestrial ecosystems is based on ecosystem-specific desired ranges of landscape-level and site-level condition indicators. Values range from 0 (not restorable) to 14 (good site conditions in unfragmented landscapes). Condition Index (CI) values are grouped into 5 classes: 0 = Unrestorable non-habitat (CI = 0) 1 = Restorable non-habitat (CI = 1) 2 = Restorable habitat & nearby restorable non-habitat in highly fragmented landscapes (CI = 2-5) 3 = Habitat in fragmented landscapes (CI = 6-11) 4 = Habitat in unfragmented landscapes (CI = 12-14) ‚Äč*Indicates this dataset continued to be used in Middle Southeast Blueprint 2020.
Ratio of the Conservation Value Index score calculated for each pixel to the maximum possible CVI score (144) for aquatic systems.
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