Taxonomic distinctness and aquatic Coleoptera: comparing a perennial and intermittent stream with differing geomorphologies in Hidalgo, Mexico
Por:
Campbell W.B., Arce-Pérez R., Gómez-Anaya J.A.
Publicada:
1 mar 2008
Resumen:
Taxonomic distinctness combines species richness and phylogenetic diversity to detect changes in taxonomic structure. Most studies have reported on changes due to marine impacts, with little emphasis on habitat influences or freshwater systems. The composition and organizational structure of aquatic Coleoptera assemblages are susceptible to local influence, yet their colonization capacities suggest greater assemblage similarity over larger spatial scales. Surveys were conducted in two contrasting local streams (approximately 20 km apart), one intermittent with multiple stair-step cascades and intervening pools during the rainy season (and only pools during the dry season), and the other perennial with low gradient, in Hidalgo, Mexico. Published information from these initial surveys and their associated collections of adults were examined and the data converted to monthly presence/absence data for analysis using taxonomic distinctness. Despite reported physicochemical differences betwe
Filiaciones:
Campbell W.B.:
c/o Dr. Silvia Lopez Ortiz, Colegio de Postgraduados, Campus Veracruz, Apartado Postal 421, Veracruz, Veracruz C.P. 91700, Mexico
Arce-Pérez R.:
Departamento de Entomología, Instituto de Ecología, A.C., Km 2.5 Carretera Antigua a Coatepec No. 351, Congregación El Haya, C.P. 91070 Xalapa, Veracruz, Mexico
Gómez-Anaya J.A.:
Departamento de Entomología, Instituto de Ecología, A.C., Km 2.5 Carretera Antigua a Coatepec No. 351, Congregación El Haya, C.P. 91070 Xalapa, Veracruz, Mexico
|