文章基本信息

标题：Short-Term Effects of Nitrogen and Extracellular Protease Amendment on Algal Productivity in Nitrogen-Deprived Periphyton
本地全文：下载
作者：Steven N. Francoeur ; Eric M. Espeland ; Robert G. Wetzel 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2003
卷号：18
期号：1
页码：105-113
DOI：10.1080/02705060.2003.9663956
出版社：Taylor & Francis
摘要：A nutrient enrichment/ 14 C-uptake bioassay technique was used to measure the effects of enhanced supply of dissolved inorganic nitrogen, dissolved organic nitrogen, and extracellular protease on primary productivity in nitrogen-deprived periphyton communities. Addition of dissolved inorganic nitrogen rapidly and consistently doubled primary productivity, but the addition of dissolved organic nitrogen did not increase primary productivity within the experimental timeframe. Experimental additions of protease had little effect on primary productivity, and simultaneous addition of protease protein also had no effect.