xxii, 319 pages : 28 cm

"North America's freshwater habitats and the extraordinary biodiversity they contain are facing unprecedented threats from a range of sources, including flow alteration, habitat fragmentation, introduced species, and overall land use changes." "World Wildlife Fund-U.S. assembled a team of leading scientists to conduct a conservation assessment of freshwater ecoregions as an initial step in identifying the areas where protective and restorative measures should be implemented first. Freshwater Ecoregions of North America presents that assessment and outlines measures that must be taken to conserve, and in many cases restore, native biodiversity."--Jacket

"World Wildlife Fund--United States."

Includes bibliographical references (pages 289-304) and index

Diversity, levels of imperilment, and cryptic fishes in the southeastern United States / N.M. Burkhead and H.L. Jelks -- The Mississippi River basin: its megafauna and hydrological modifications / B.M. Burr and J.B. Ladonski -- Preserving North America's unique crayfish fauna / C.A. Taylor -- Freshwater mussels: a complicated resource to conserve / G.T. Watters -- Subterranean freshwater biodiversity in northeastern Mexico and Texas / D.A. Hendrickson and J. Krejca -- Connecting the land to the sea: anadromous fish / P.B. Moyle -- Western springs: their faunas and threats to their existence / W.L. Minckley and P.J. Unmack -- California vernal pools / B. Vlamis -- Prairie potholes in decline / M.H. Stolt -- Invasive nonindigenous species: a major threat to freshwater biodiversity / J.D. Williams and G.K. Meffe -- Categorizing imperiled and vulnerable species / L.L. Master -- Canadian freshwater biodiversity / D. McAllister -- The valley of Cuatro Ciénegas, Coahuila: its biota and its future / S. Contreras-Balderas -- North America's freshwater invertebrates: a research priority / D.L. Strayer -- Conservation of aquatic karst biotas: shedding light on troubled waters / S.J. Walsh -- Reoperation and decommissioning of hydropower dams: an opportunity for river rehabilitation / A. Fahlund

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