Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry.
Bay-scale empirical evaluations of how bivalve aquaculture alters plankton composition, and subsequently ecological functioning and higher trophic levels, are lacking. Temporal, inter- and within-bay variation in hydrodynamic, environmental, and aquaculture pressure complicate plankton monitoring de...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2024-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0313271 |
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| author | Hannah Sharpe Thomas Guyondet Jeffrey Barrell Claude Belzile Christopher W McKindsey Flora Salvo Anaïs Lacoursière-Roussel |
| author_facet | Hannah Sharpe Thomas Guyondet Jeffrey Barrell Claude Belzile Christopher W McKindsey Flora Salvo Anaïs Lacoursière-Roussel |
| author_sort | Hannah Sharpe |
| collection | DOAJ |
| description | Bay-scale empirical evaluations of how bivalve aquaculture alters plankton composition, and subsequently ecological functioning and higher trophic levels, are lacking. Temporal, inter- and within-bay variation in hydrodynamic, environmental, and aquaculture pressure complicate plankton monitoring design to detect bay-scale changes and inform aquaculture ecosystem interactions. Here, we used flow cytometry to investigate spatio-temporal variations in bacteria and phytoplankton (< 20 μm) composition in four bivalve aquaculture embayments. We observed higher abundances of bacteria and phytoplankton in shallow embayments that experienced greater freshwater and nutrient inputs. Depleted nutrient conditions may have led to the dominance of picophytoplankton cells, which showed strong within-bay variation as a function of riverine vs marine influence and nutrient availability. Although environmental forcings appeared to be a strong driver of spatio-temporal trends, results showed that bivalve aquaculture may reduce near-lease phytoplankton abundance and favor bacterial growth. We discuss confounding environmental factors that must be accounted for when interpreting aquaculture effects such as grazing, benthic-pelagic coupling processes, and microbial biogeochemical cycling. Conclusions provide guidance on sampling considerations using flow cytometry in aquaculture sites based on embayment geomorphology and hydrodynamics. |
| format | Article |
| id | doaj-art-4b4e20a362674686a24d4b7dc31ff80e |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-4b4e20a362674686a24d4b7dc31ff80e2025-08-20T02:12:42ZengPublic Library of Science (PLoS)PLoS ONE1932-62032024-01-011911e031327110.1371/journal.pone.0313271Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry.Hannah SharpeThomas GuyondetJeffrey BarrellClaude BelzileChristopher W McKindseyFlora SalvoAnaïs Lacoursière-RousselBay-scale empirical evaluations of how bivalve aquaculture alters plankton composition, and subsequently ecological functioning and higher trophic levels, are lacking. Temporal, inter- and within-bay variation in hydrodynamic, environmental, and aquaculture pressure complicate plankton monitoring design to detect bay-scale changes and inform aquaculture ecosystem interactions. Here, we used flow cytometry to investigate spatio-temporal variations in bacteria and phytoplankton (< 20 μm) composition in four bivalve aquaculture embayments. We observed higher abundances of bacteria and phytoplankton in shallow embayments that experienced greater freshwater and nutrient inputs. Depleted nutrient conditions may have led to the dominance of picophytoplankton cells, which showed strong within-bay variation as a function of riverine vs marine influence and nutrient availability. Although environmental forcings appeared to be a strong driver of spatio-temporal trends, results showed that bivalve aquaculture may reduce near-lease phytoplankton abundance and favor bacterial growth. We discuss confounding environmental factors that must be accounted for when interpreting aquaculture effects such as grazing, benthic-pelagic coupling processes, and microbial biogeochemical cycling. Conclusions provide guidance on sampling considerations using flow cytometry in aquaculture sites based on embayment geomorphology and hydrodynamics.https://doi.org/10.1371/journal.pone.0313271 |
| spellingShingle | Hannah Sharpe Thomas Guyondet Jeffrey Barrell Claude Belzile Christopher W McKindsey Flora Salvo Anaïs Lacoursière-Roussel Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry. PLoS ONE |
| title | Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry. |
| title_full | Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry. |
| title_fullStr | Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry. |
| title_full_unstemmed | Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry. |
| title_short | Monitoring bay-scale ecosystem changes in bivalve aquaculture embayments using flow cytometry. |
| title_sort | monitoring bay scale ecosystem changes in bivalve aquaculture embayments using flow cytometry |
| url | https://doi.org/10.1371/journal.pone.0313271 |
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