Continuous In Situ Nutrient Analyzers Pinpoint the Onset and Rate of Internal P Loading under Anoxia in Lake Erie’s Central Basin

Anderson, Hanna S.; Johengen, Thomas H.; Godwin, Casey M.; Purcell, Heidi; Alsip, Peter J.; Ruberg, Steve A.; Mason, Lacey A.

doi:10.1021/acsestwater.0c00138

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i

Continuous In Situ Nutrient Analyzers Pinpoint the Onset and Rate of Internal P Loading under Anoxia in Lake Erie’s Central Basin

2021
By Anderson, Hanna S. ; Johengen, Thomas H. ; Godwin, Casey M. ; ...
Source: ACS ES&T Water, 1(4), 774-781

[PDF-3.06 MB]

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Journal Title:

ACS ES&T Water
Personal Author:

Anderson, Hanna S. ; Johengen, Thomas H. ; Godwin, Casey M. ; Purcell, Heidi ; Alsip, Peter J. ; ... More +

Anderson, Hanna S. ; Johengen, Thomas H. ; Godwin, Casey M. ; Purcell, Heidi ; Alsip, Peter J. ; Ruberg, Steve A. ; Mason, Lacey A. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIGLR (Cooperative Institute for Great Lakes Research) ; GLERL (Great Lakes Environmental Research Laboratory)

OAR (Oceanic and Atmospheric Research) ; CIGLR (Cooperative Institute for Great Lakes Research) ; GLERL (Great Lakes Environmental Research Laboratory) Less -
Description:

Lake Erie ’s central basin experiences seasonal anoxia, contributing to internal sediment phosphorus (P) loadingand exacerbating eutrophication. The precise conditions requiredfor internal loading are poorly understood. This study constrainsthe timing and rates of internal P loading using continuous in situ temperature, dissolved oxygen (DO), and soluble reactive P (SRP)observations from two sites. SRP concentrations remained lowduring normoxia (>2 mg of DO L −1) and hypoxia (0 −2m go fD O L−1) but increased abruptly after anoxia for 12 −42 h. SRP ﬂux rate estimations varied, likely due to advection and hypolimnionthickness variation, but could still be reasonably quanti ﬁed. Flux rates and standard errors during anoxia averaged 25.67 ±5.5 mg
Source:

ACS ES&T Water, 1(4), 774-781
DOI:

https://doi.org/10.1021/acsestwater.0c00138
ISSN:

2690-0637
Format:

PDF
Publisher:

American Chemical Society (ACS)
Document Type:

Journal Article
Funding:

Grant no. NA16NOS4780209
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https://creativecommons.org/licenses/by-nc-nd/4.0/
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CC BY-NC-ND
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urn:sha256:7d3c16a1b4e070aa92f6eb29fc79a2e942ec2f3ef616571306b55d5931f75789
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https://repository.library.noaa.gov/view/noaa/52473/noaa_52473_DS1.pdf
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Continuous In Situ Nutrient Analyzers Pinpoint the Onset and Rate of Internal P Loading under Anoxia in Lake Erie’s Central Basin

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