Production of Soluble, High Molecular Weight Phosphorus and Its Subsequent Uptake by Stream Detritus

摘要

Several studies have demonstrated the importance of nonorthophosphate compounds, including some of relatively high molecular weight, in phosphorus cycling in aquatic ecosystems. This paper reports results from a laboratory study indicating that some of the soluble phosphorus released by microbes associated with coarse and fine detritus in streams is of relatively high molecular weight (>5000 daltons) and that this phosphorus is subsequently utilized, but at rates considerably lower than for orthophosphate. (ERA citation 12:023496)