Comparison of Channel and Hyporheic Invertebrate Communities in a Southwestern USA Desert Stream
作者： Fred Govedich , Gaye Oberlin , Dean W. Blinn
DOI: 10.1080/02705060.1996.9663479
关键词: Arid 、 Ecology 、 Hydrology 、 Environmental science 、 Cyclopoida 、 Biome 、 Abundance (ecology) 、 Invertebrate 、 Perennial plant 、 Channel (geography) 、 Hyporheic zone
摘要: ABSTRACT We collected invertebrates seasonally from the channel surface and hyporheic zone of a perennial desert stream in central Arizona, U.S.A. Channel collections were made with Hess sampler taken vacuum bilge pump sand-point probe. Diptera, Plecoptera, Nematoda Cyclopoida comprised 86% total annual abundance zone, while Diptera Trichoptera up 85% channel. Pot samplers two substratum sizes chamber depths also buried during summer for comparison probe collections. Densities higher (3,400 animals/m2) than those subchannel pots (528 animals/m2); however, 71 animals/L compared to 1.3 no significant difference (p >0.20) selection size depth. Hyporheic communities may be restricted arid biomes and/or r...
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