Partitioning taxonomic diversity of aquatic insect assemblages and functional feeding groups in neotropical savanna headwater streams
作者： W.R. Ferreira , L.U. Hepp , R. Ligeiro , D.R. Macedo , R.M. Hughes
DOI: 10.1016/J.ECOLIND.2016.08.042
关键词: Water quality 、 Habitat 、 Biology 、 STREAMS 、 Aquatic insect 、 Ecology 、 Beta diversity 、 Biodiversity 、 Biome 、 Alpha diversity
摘要: Abstract Biological diversity can be divided into: alpha (α, local), beta (β, difference in assemblage composition among locals), and gamma (γ, total diversity). We assessed the partitioning of taxonomic Ephemeroptera, Plecoptera Trichoptera (EPT) functional feeding groups (FFG) neotropical savanna (southeastern Brazilian cerrado) streams. To do so, we considered three components: stream site (α), sites (β 1 ), hydrologic units 2 ). also evaluated association EPT genera with heterogeneity land use, instream physical habitat structure, water quality variables. The percentage α (20.7%) was smaller than β percentages (53.1% 26.2%, respectively). FFG collector-gatherer (26.5%) that (55.8%) higher (17.7%) diversity. predominant had greatest , 55.8%). Our findings support need for implementing regional scale conservation strategies cerrado biome, which has been degraded by anthropogenic activities.
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