Extinción a nivel local y regional en los pastizales del noreste de la provincia de Buenos Aires (Argentina)

GUERRERO, ELIAN; AGNOLIN, FEDERICO L.

Revista del Museo ARgentino de Ciencias Naturales

Museo ARgentino de Ciencias Naturales

Año: 2018 vol. 20 p. 359 - 369

1853-0400

Habitat loss is one of the most serious processes that affect biological diversity. The grasslands of southeasternSouth America are one of the most affected biomes by this process due to various factors related to human activities. The objective of this work is to evaluate the loss of biodiversity in the Reserva Natural Santa Catalina as amodel to visualize this process in the Pampas of southeastern South America. For this, the lists of species thatcurrently inhabit the reserve were compared with collections and works published before 1970 to detect whichecosystem components were lost. 27 species of plants and 12 species of birds that became extinct from the localitywere counted. 100% of the plants and 83% of the birds are species that grow or inhabit native grasslands. On theother hand, among these, five species of plants and two of birds have become extinct at the regional level. Thevulnerability of grasslands in the region is evidenced by these values, and some factors that may have caused thisloss are discussed.