@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 and
Schiff, Sherry L. and
Venkiteswaran, Jason J. and
Paterson, Michael J. and
Baulch, Helen M. and
Molot, Lewis A. and
Higgins, Scott and
Schiff, Sherry L. and
Venkiteswaran, Jason J. and
Paterson, Michael J. 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
%A Schiff, Sherry L.
%A Venkiteswaran, Jason J.
%A Paterson, Michael J.
%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 Higgins, Sherry L. Schiff, Jason J. Venkiteswaran, Michael J. Paterson, Helen M. Baulch, Lewis A. Molot, Scott Higgins, Sherry L. Schiff, Jason J. Venkiteswaran, Michael J. 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.
