@article{Molot-2021-Phosphorus-only,
title = "Phosphorus-only fertilization rapidly initiates large nitrogen-fixing cyanobacteria blooms in two oligotrophic lakes",
author = "Molot, Lewis A. and
Higgins, Scott N. and
Schiff, Sherry L. and
Venkiteswaran, Jason J. and
Paterson, Michael and
Baulch, Helen M.",
journal = "Environmental Research Letters, Volume 16, Issue 6",
volume = "16",
number = "6",
year = "2021",
publisher = "IOP Publishing",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G21-49001",
doi = "10.1088/1748-9326/ac0564",
pages = "064078",
abstract = "Abstract Two small, oligotrophic lakes at the IISD-Experimental Lakes Area in northwestern Ontario, Canada were fertilized weekly with only phosphorus (P) in the summer and early fall of 2019. The P fertilization rates were high enough (13.3 {\mbox{$\mu$}} g l −1 added weekly) to produce dense, month-long blooms of N 2 -fixing Dolichospermum species in both lakes within 9{--}12 weeks after fertilization began, turning them visibly green without the addition of nitrogen. P-only fertilization increased average seasonal chlorophyll a concentrations and cyanobacteria biomass well above the pre-fertilization levels of 2017 and 2018. Nitrogen (N) content in the epilimnion of thermally stratified Lake 304 and the water column of shallow Lake 303 doubled and P storage in the water column temporarily increased during the blooms. These whole-lake fertilization experiments demonstrate that large cyanobacteria blooms can develop rapidly under high P loading without anthropogenic N inputs, suggesting that aggressive N control programs are unlikely to prevent bloom formation and that P controls should remain the cornerstone for cyanobacteria management.",
}
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<abstract>Abstract Two small, oligotrophic lakes at the IISD-Experimental Lakes Area in northwestern Ontario, Canada were fertilized weekly with only phosphorus (P) in the summer and early fall of 2019. The P fertilization rates were high enough (13.3 μ g l −1 added weekly) to produce dense, month-long blooms of N 2 -fixing Dolichospermum species in both lakes within 9–12 weeks after fertilization began, turning them visibly green without the addition of nitrogen. P-only fertilization increased average seasonal chlorophyll a concentrations and cyanobacteria biomass well above the pre-fertilization levels of 2017 and 2018. Nitrogen (N) content in the epilimnion of thermally stratified Lake 304 and the water column of shallow Lake 303 doubled and P storage in the water column temporarily increased during the blooms. These whole-lake fertilization experiments demonstrate that large cyanobacteria blooms can develop rapidly under high P loading without anthropogenic N inputs, suggesting that aggressive N control programs are unlikely to prevent bloom formation and that P controls should remain the cornerstone for cyanobacteria management.</abstract>
<identifier type="citekey">Molot-2021-Phosphorus-only</identifier>
<identifier type="doi">10.1088/1748-9326/ac0564</identifier>
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<url>https://gwf-uwaterloo.github.io/gwf-publications/G21-49001</url>
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%0 Journal Article
%T Phosphorus-only fertilization rapidly initiates large nitrogen-fixing cyanobacteria blooms in two oligotrophic lakes
%A Molot, Lewis A.
%A Higgins, Scott N.
%A Schiff, Sherry L.
%A Venkiteswaran, Jason J.
%A Paterson, Michael
%A Baulch, Helen M.
%J Environmental Research Letters, Volume 16, Issue 6
%D 2021
%V 16
%N 6
%I IOP Publishing
%F Molot-2021-Phosphorus-only
%X Abstract Two small, oligotrophic lakes at the IISD-Experimental Lakes Area in northwestern Ontario, Canada were fertilized weekly with only phosphorus (P) in the summer and early fall of 2019. The P fertilization rates were high enough (13.3 μ g l −1 added weekly) to produce dense, month-long blooms of N 2 -fixing Dolichospermum species in both lakes within 9–12 weeks after fertilization began, turning them visibly green without the addition of nitrogen. P-only fertilization increased average seasonal chlorophyll a concentrations and cyanobacteria biomass well above the pre-fertilization levels of 2017 and 2018. Nitrogen (N) content in the epilimnion of thermally stratified Lake 304 and the water column of shallow Lake 303 doubled and P storage in the water column temporarily increased during the blooms. These whole-lake fertilization experiments demonstrate that large cyanobacteria blooms can develop rapidly under high P loading without anthropogenic N inputs, suggesting that aggressive N control programs are unlikely to prevent bloom formation and that P controls should remain the cornerstone for cyanobacteria management.
%R 10.1088/1748-9326/ac0564
%U https://gwf-uwaterloo.github.io/gwf-publications/G21-49001
%U https://doi.org/10.1088/1748-9326/ac0564
%P 064078
Markdown (Informal)
[Phosphorus-only fertilization rapidly initiates large nitrogen-fixing cyanobacteria blooms in two oligotrophic lakes](https://gwf-uwaterloo.github.io/gwf-publications/G21-49001) (Molot et al., GWF 2021)
ACL
- Lewis A. Molot, Scott N. Higgins, Sherry L. Schiff, Jason J. Venkiteswaran, Michael Paterson, and Helen M. Baulch. 2021. Phosphorus-only fertilization rapidly initiates large nitrogen-fixing cyanobacteria blooms in two oligotrophic lakes. Environmental Research Letters, Volume 16, Issue 6, 16(6):064078.
