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On the influence of substrate morphology and surface area on phytofauna

January 1, 2007

The independent effects and interactions between substrate morphology and substrate surface area on invertebrate density or biomass colonizing artificial plant beds were assessed in a clear-water and a turbid playa lake in Castro County, Texas, USA. Total invertebrate density and biomass were consistently greater on filiform substrates than on laminar substrates with equivalent substrate surface areas. The relationship among treatments (substrates with different morphologies and surface areas) and response (invertebrate density or biomass) was assessed with equally spaced surface areas. Few statistically significant interactions between substrate morphology and surface area were detected, indicating that these factors were mostly independent from each other in their effect on colonizing invertebrates. Although infrequently, when substrate morphology and surface area were not independent, the effects of equally spaced changes in substrate surface area on the rate of change of phytofauna density or biomass per unit of substrate surface area were dependent upon substrate morphology. The absence of three-way interactions indicated that effects of substrate morphology and substrate area on phytofauna density or biomass were independent of environmental conditions outside and inside exclosures. ?? 2006 Springer Science+Business Media B.V.

Citation Information

Publication Year 2007
Title On the influence of substrate morphology and surface area on phytofauna
DOI 10.1007/s10750-006-0359-x
Authors S. Becerra-Munoz, H.L. Schramm
Publication Type Article
Publication Subtype Journal Article
Series Title Hydrobiologia
Series Number
Index ID 70031805
Record Source USGS Publications Warehouse
USGS Organization