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Biodiversity

Endangered Species Bulletin

Series

1991

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Endangered And Threatened Wildlife And Plants; Determination Of Endangered Status For The Winged Mapleleaf Freshwater Mussel Jun 1991

Endangered And Threatened Wildlife And Plants; Determination Of Endangered Status For The Winged Mapleleaf Freshwater Mussel

Endangered Species Bulletin

The Fish and Wildlife Service (Service) determines the winged mapleleaf mussel (Quodrulo frogoso) to be an endangered species under the authority of the Endangered Species Act of 1973, as amended (16 U.S.C 1531 et seq.) (Act). Historically, this freshwater mussel occurred extensively in the Mississippi, Tennessee, Ohio, and Cumberland River drainages in the states of Ohio, Indiana, Missouri, Tennessee, Nebraska, Iowa, Illinois, Wisconsin, Oklahoma and Kentucky. As a result of land use changes, river alterations and pollution, the winged mapleleaf mussel has been reduced to a single known population located in the St. Croix River between northwestern Wisconsin …


Black-Capped Vireo Recovery Plan, Joseph A. Grzybowski Jan 1991

Black-Capped Vireo Recovery Plan, Joseph A. Grzybowski

Endangered Species Bulletin

Current Species Status: This species is listed as endangered. The number of individuals is unknown. However, it has undergone substantial range reduction in Kansas, Oklahoma, and Texas. It is extirpated in Kansas, and the Oklahoma population is below 300 birds. Declines have also been documented over much of the species’ range in Texas. Its status is uncertain in Coahuila, Mexico.

Habitat Requirements and Limiting Factors: The black-capped vireo occurs in mixed deciduous/evergreen shrubland. Breeding vireos use shrubby growth of irregular height and distribution with spaces between the small thickets and clumps and with vegetative cover extending to ground …