Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community
Abstract Freshwater salinization is a widespread issue, but evidence of ecological effects on aquatic communities remains scarce. We experimentally exposed salt‐naive plankton communities of a north‐temperate, freshwater lake to a gradient of chloride (Cl−) concentration (0.27–1400 mg Cl L−1) with i...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-02-01
|
| Series: | Limnology and Oceanography Letters |
| Online Access: | https://doi.org/10.1002/lol2.10229 |
| _version_ | 1811176962335440896 |
|---|---|
| author | Louis Astorg Jean‐Christophe Gagnon Cassandre S. Lazar Alison M. Derry |
| author_facet | Louis Astorg Jean‐Christophe Gagnon Cassandre S. Lazar Alison M. Derry |
| author_sort | Louis Astorg |
| collection | DOAJ |
| description | Abstract Freshwater salinization is a widespread issue, but evidence of ecological effects on aquatic communities remains scarce. We experimentally exposed salt‐naive plankton communities of a north‐temperate, freshwater lake to a gradient of chloride (Cl−) concentration (0.27–1400 mg Cl L−1) with in situ mesocosms. Following 6 weeks, we measured changes in the diversity, composition, and abundance of eukaryotic 18S rRNA gene. Total phytoplankton biomass remained unchanged, but we observed a shift in dominant phytoplankton groups with increasing salt concentration, from Cryptophyta and Chlorophyta at lower chloride concentrations (< 185 mg Cl− L−1) to Ochrophyta at higher chloride concentrations (> 185 mg Cl− L−1). Crustacean zooplankton and rotifers were sensitive to the salinity, and disappeared at low chloride concentrations (< 40 mg Cl− L−1). While ciliates thrived at low chloride concentrations (< 185 mg Cl− L−1), fungal groups dominated at intermediate chloride concentrations (185–640 mg Cl− L−1), and only phytoplankton remained at the highest chloride concentrations (> 640 mg Cl− L−1). |
| first_indexed | 2024-04-10T20:01:32Z |
| format | Article |
| id | doaj.art-802f7cf9545748d5af4df6802a8430f3 |
| institution | Directory Open Access Journal |
| issn | 2378-2242 |
| language | English |
| last_indexed | 2024-04-10T20:01:32Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Limnology and Oceanography Letters |
| spelling | doaj.art-802f7cf9545748d5af4df6802a8430f32023-01-27T05:34:23ZengWileyLimnology and Oceanography Letters2378-22422023-02-0181384710.1002/lol2.10229Effects of freshwater salinization on a salt‐naïve planktonic eukaryote communityLouis Astorg0Jean‐Christophe Gagnon1Cassandre S. Lazar2Alison M. Derry3Département des Sciences Biologiques Université du Québec à Montréal Montréal Quebec CanadaDépartement des Sciences Biologiques Université du Québec à Montréal Montréal Quebec CanadaDépartement des Sciences Biologiques Université du Québec à Montréal Montréal Quebec CanadaDépartement des Sciences Biologiques Université du Québec à Montréal Montréal Quebec CanadaAbstract Freshwater salinization is a widespread issue, but evidence of ecological effects on aquatic communities remains scarce. We experimentally exposed salt‐naive plankton communities of a north‐temperate, freshwater lake to a gradient of chloride (Cl−) concentration (0.27–1400 mg Cl L−1) with in situ mesocosms. Following 6 weeks, we measured changes in the diversity, composition, and abundance of eukaryotic 18S rRNA gene. Total phytoplankton biomass remained unchanged, but we observed a shift in dominant phytoplankton groups with increasing salt concentration, from Cryptophyta and Chlorophyta at lower chloride concentrations (< 185 mg Cl− L−1) to Ochrophyta at higher chloride concentrations (> 185 mg Cl− L−1). Crustacean zooplankton and rotifers were sensitive to the salinity, and disappeared at low chloride concentrations (< 40 mg Cl− L−1). While ciliates thrived at low chloride concentrations (< 185 mg Cl− L−1), fungal groups dominated at intermediate chloride concentrations (185–640 mg Cl− L−1), and only phytoplankton remained at the highest chloride concentrations (> 640 mg Cl− L−1).https://doi.org/10.1002/lol2.10229 |
| spellingShingle | Louis Astorg Jean‐Christophe Gagnon Cassandre S. Lazar Alison M. Derry Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community Limnology and Oceanography Letters |
| title | Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community |
| title_full | Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community |
| title_fullStr | Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community |
| title_full_unstemmed | Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community |
| title_short | Effects of freshwater salinization on a salt‐naïve planktonic eukaryote community |
| title_sort | effects of freshwater salinization on a salt naive planktonic eukaryote community |
| url | https://doi.org/10.1002/lol2.10229 |
| work_keys_str_mv | AT louisastorg effectsoffreshwatersalinizationonasaltnaiveplanktoniceukaryotecommunity AT jeanchristophegagnon effectsoffreshwatersalinizationonasaltnaiveplanktoniceukaryotecommunity AT cassandreslazar effectsoffreshwatersalinizationonasaltnaiveplanktoniceukaryotecommunity AT alisonmderry effectsoffreshwatersalinizationonasaltnaiveplanktoniceukaryotecommunity |