Effects of N : P loading ratios on phytoplankton community composition, primary production and N fixation in a eutrophic lake. Vrede, T., Ballantyne, A., Mille‐Lindblom, C., Algesten, G., Gudasz, C., Lindahl, S., & Brunberg, A. K. Freshwater Biology, 54(2):331–344, 2009. _eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.2008.02118.x
Effects of N : P loading ratios on phytoplankton community composition, primary production and N fixation in a eutrophic lake [link]Paper  doi  abstract   bibtex   1 download  
1. The aim of this study was to assess the effects of different nitrogen (N) to phosphorus (P) loading ratios on phytoplankton community composition and primary production in a naturally eutrophic lake. Furthermore, the sources of N fuelling primary production were estimated using 15N stable isotope tracers. 2. A mesocosm experiment was performed with the same amount of P added to all mesocosms (similar to internal loading rates) but with a range of N additions (0–86 μm N), resulting in a gradient of N : P supply ratios. 3. Low N : P supply ratios resulted in a significant shift in the phytoplankton assemblage to a community dominated by N-fixing cyanobacteria and a supply of atmospheric N2 estimated to be up to 60% of total supply. 4. The N : P loading ratio had no significant effect on primary production, total nitrogen (TN) concentration or particulate N concentration. 5. Our results imply that a reduced N : P ratio of the nutrient load does not necessarily result in a lower TN concentration and downstream N export due to compensation by N-fixing cyanobacteria.
@article{vrede_effects_2009,
	title = {Effects of {N} : {P} loading ratios on phytoplankton community composition, primary production and {N} fixation in a eutrophic lake},
	volume = {54},
	copyright = {© 2008 The Authors, Journal compilation © 2008 Blackwell Publishing Ltd},
	issn = {1365-2427},
	shorttitle = {Effects of {N}},
	url = {http://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2427.2008.02118.x},
	doi = {10.1111/j.1365-2427.2008.02118.x},
	abstract = {1. The aim of this study was to assess the effects of different nitrogen (N) to phosphorus (P) loading ratios on phytoplankton community composition and primary production in a naturally eutrophic lake. Furthermore, the sources of N fuelling primary production were estimated using 15N stable isotope tracers. 2. A mesocosm experiment was performed with the same amount of P added to all mesocosms (similar to internal loading rates) but with a range of N additions (0–86 μm N), resulting in a gradient of N : P supply ratios. 3. Low N : P supply ratios resulted in a significant shift in the phytoplankton assemblage to a community dominated by N-fixing cyanobacteria and a supply of atmospheric N2 estimated to be up to 60\% of total supply. 4. The N : P loading ratio had no significant effect on primary production, total nitrogen (TN) concentration or particulate N concentration. 5. Our results imply that a reduced N : P ratio of the nutrient load does not necessarily result in a lower TN concentration and downstream N export due to compensation by N-fixing cyanobacteria.},
	language = {en},
	number = {2},
	urldate = {2020-08-31},
	journal = {Freshwater Biology},
	author = {Vrede, Tobias and Ballantyne, Ashley and Mille‐Lindblom, Cecilia and Algesten, Grete and Gudasz, Cristian and Lindahl, Sandra and Brunberg, Anna Kristina},
	year = {2009},
	note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2427.2008.02118.x},
	keywords = {\#nosource, 15N stable isotopes, eutrophication, nitrogen, phosphorus, stoichiometry},
	pages = {331--344},
}

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