Particulate phosphorus bioavailability as a function of stream flow and land cover

Water Research
Micaela E Ellison, Michael T Brett

Abstract

Using total phosphorus concentrations to estimate eutrophication risk is problematic for management purposes, as only some forms of phosphorus are biologically available for phytoplankton growth. This study estimated the bioavailability of particulate phosphorus, in forested, urban, agricultural (i.e. dairy farm) and mixed land cover streams. Sixteen stream sites were sampled during base and storm flow conditions and the following parameters were determined: total suspended solids, total phosphorus, total dissolved phosphorus, particulate phosphorus, percent bioavailable particulate phosphorus (%BAPP), total bioavailable phosphorus and sediment particle size distribution. Algal assays with Pseudokirchneriella subcapitata were used to measure %BAPP. Percent BAPP averaged 17%, 26% and 24% for streams draining catchments with forested, mixed use and agricultural land cover, respectively, and %BAPP did not vary significantly between base and storm flow conditions in these stream types. In contrast, %BAPP averaged 73% in the urban streams during baseflows but declined to an average of only 19% during storms. Particle size distributions did not correlate with %BAPP in these samples. During storm events, particulate phosphorus concent...Continue Reading

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Citations

Dec 19, 2012·Environmental Science and Pollution Research International·Andreas HolbachStefan Norra
Oct 23, 2015·Environmental Science and Pollution Research International·Qing-Zhen YaoZhi-Gang Yu
Mar 20, 2013·Journal of Environmental Management·Nandika P MiguntannaAshantha Goonetilleke
Jun 1, 2007·Ecology·Jonathan W MooreGordon W Holtgrieve
Jul 31, 2013·Environmental Pollution·Bo Li, Michael T Brett
Jan 11, 2011·Journal of Environmental Management·Helen K G R Millier, Peter S Hooda
Dec 3, 2015·Brazilian Journal of Biology = Revista Brasleira De Biologia·K Q CarvalhoE J Arantes
Oct 8, 2019·Journal of Environmental Quality·Miriam GlendellMarc Stutter
Aug 24, 2017·Environmental Science and Pollution Research International·Zebin TianXing Wang
Oct 31, 2009·Journal of Environmental Quality·Petri EkholmUwe Münster
Aug 30, 2020·Environmental Science and Pollution Research International·Xue GengPeirong Sun
Jul 15, 2020·The Science of the Total Environment·Yi WangWilliam R Selbig
Feb 23, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Ting Ka LingTakanobu Inoue
Feb 26, 2020·The Science of the Total Environment·Gabriel Democh GoularteVerediana Fernanda Cherobim
Oct 23, 2021·Ecological Applications : a Publication of the Ecological Society of America·Charlotte F NarrSarah M Collins

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