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The lateral distribution of benthic algae in flowing waters is an overlooked but important component of river water-quality management. A number of workers have described the spatially variable structure of bottom algae in the field, yet rarely has it been reproduced using mechanistic models. In this study, we develop a simple numerical model that describes lateral biomass accrual of bottom-attached...
We used artificial substrates in an open pasture stream in south-east Queensland, Australia, to test (a) the relative importance of shade vs. nutrients on periphyton growth, and (b) whether nitrogen or phosphorus (or both) are limiting. Nutrient-diffusing substrates consisting of agar solutions with three nutrient treatments (N, P, N+P) were positioned in three shade treatments (0, 50%, 90%) and replicated...
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