Biodiversity assessment of benthic macroinvertebrates in altitudinal lotic ecosystems of Serra do Cipó (MG, Brazil)

Abstract

Five lotic systems of Serra do Cipó, south-east Brazil, were investigated in order to assess the existing diversity of benthic macroinvertebrates, habitats-microhabitats, and the available trophic resources. For each river it was analysed the communities of benthic macroinvertebrates and the composition of some taxonomic groups (Plecoptera, Ephemeroptera, Trichoptera and Diptera Chironomidae): the community with Bivalvia Sphaeriidae, Oligochaeta and Ephemeroptera Baetidae (being supposed a closed relation Bivalvia-Oligochaeta based on the process of bioturbation and enrichment of sediment in organic matter) in Tanque River; the macrofauna associated to aquatic macrophytes from rivers Peixe and Preto do Itambé reflecting the reaction of the ecosystems versus the quantities of nutrients which originate from the farmlands; the lithoreophilic communities of Cipó River; the community depending on deposits of leaves and filamentous algae in Congonhas Stream; the very rich community of the moss clumps in the Indaiá Stream. A proposal for biological zonation of Cipó River and some comments about the importance of the analysed benthic macroinvertebrates in the biological production of the aquatic communities were done.

Estrutura da comunidade de invertebrados bentônicos em dois cursos d'água do Rio Grande do Sul, Brasil

“…Os coletores que foram os organismos mais freqüentes em ambos locais, também foram mais numerosos em rios de correnteza e de altitude e em lagoas da região serrana de Minas Gerais, Brasil (JACOBSEN & ENCALADA 1998, MARQUES et al 1999, REMPEL et al 2000, CALLISTO et al 2001a, GALDEAN et al 2001.…”

“…Alguns estudos têm investigado a estrutura da comunidade dos invertebrados bentônicos e as variáveis físicas e químicas dos rios brasileiros, destacando-se os trabalhos realizados no Estado de São Paulo por UIEDA & GAJARDO (1996), BRAN-CO & NECCHI JR. (1997), KIKUCHI & UIEDA (1998), no Rio de Janeiro por BAPTISTA et al (1998) e BAPTISTA et al (2001a e em Minas Gerais por MARQUES et al (1999), CALLISTO et al (2001) e GALDEAN et al (2001. Para as bacias hidrográficas do Rio Grande do Sul, no entanto, não há dados disponíveis até o momento.…”

Spatial and temporal variation of benthic macroinvertebrates in the Nam Gnom Basin receiving discharged waters from the Nam Theun 2 Reservoir (Lao PDR)

“…At all sites, the typical dominance of Chironomidae and Baetidae was observed (Pinder, 1986;Suren, 1994;Galdean et al, 2001;Ferrington, 2008). The sensitive families e.g.…”

Does predator benefits prey? Commensalism between Corynoneura Winnertz (Diptera, Chironomidae) and Corydalus Latreille (Megaloptera, Corydalidae) in Southeastern Brazil

“…Previous studies on stream ecosystems in the headwaters of Serra do Cipó and Serra da Canastra National Parks showed that Corynoneura was very abundant (GALDEAN et al 1999b(GALDEAN et al , 2001. Corynoneura was normally found on surfaces covered by filamentous algae, mosses and debris (GALDEAN et al 1999 a, b).…”