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Start Over Author "Baker, Henry K." Publisher purdue university, usa
15 results on '"Baker, Henry K."'

1. Lake salinization drives consistent losses of zooplankton abundance and diversity across coordinated mesocosm experiments

Author

Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Beisner, Beatrix E., Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Beisner, Beatrix E.

Abstract

Human-induced salinization increasingly threatens inland waters; yet we know little about the multifaceted response of lake communities to salt contamination. By conducting a coordinated mesocosm experiment of lake salinization across 16 sites in North America and Europe, we quantified the response of zooplankton abundance and (taxonomic and functional) community structure to a broad gradient of environmentally relevant chloride concentrations, ranging from 4 to ca. 1400 mg Cl- L-1. We found that crustaceans were distinctly more sensitive to elevated chloride than rotifers; yet, rotifers did not show compensatory abundance increases in response to crustacean declines. For crustaceans, our among-site comparisons indicate: (1) highly consistent decreases in abundance and taxon richness with salinity; (2) widespread chloride sensitivity across major taxonomic groups (Cladocera, Cyclopoida, and Calanoida); and (3) weaker loss of functional than taxonomic diversity. Overall, our study demonstrates that aggregate properties of zooplankton communities can be adversely affected at chloride concentrations relevant to anthropogenic salinization in lakes.

Published
2023
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2. Lake salinization drives consistent losses of zooplankton abundance and diversity across coordinated mesocosm experiments

Author

Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Beisner, Beatrix E., Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Beisner, Beatrix E.

Abstract

Human-induced salinization increasingly threatens inland waters; yet we know little about the multifaceted response of lake communities to salt contamination. By conducting a coordinated mesocosm experiment of lake salinization across 16 sites in North America and Europe, we quantified the response of zooplankton abundance and (taxonomic and functional) community structure to a broad gradient of environmentally relevant chloride concentrations, ranging from 4 to ca. 1400 mg Cl- L-1. We found that crustaceans were distinctly more sensitive to elevated chloride than rotifers; yet, rotifers did not show compensatory abundance increases in response to crustacean declines. For crustaceans, our among-site comparisons indicate: (1) highly consistent decreases in abundance and taxon richness with salinity; (2) widespread chloride sensitivity across major taxonomic groups (Cladocera, Cyclopoida, and Calanoida); and (3) weaker loss of functional than taxonomic diversity. Overall, our study demonstrates that aggregate properties of zooplankton communities can be adversely affected at chloride concentrations relevant to anthropogenic salinization in lakes.

Published
2023
Full Text
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3. Widespread variation in salt tolerance within freshwater zooplankton species reduces the predictability of community-level salt tolerance

Author

Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Derry, Alison M., Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Derry, Alison M.

Abstract

The salinization of freshwaters is a global threat to aquatic biodiversity. We quantified variation in chloride (Cl-) tolerance of 19 freshwater zooplankton species in four countries to answer three questions: (1) How much variation in Cl- tolerance is present among populations? (2) What factors predict intraspecific variation in Cl- tolerance? (3) Must we account for intraspecific variation to accurately predict community Cl- tolerance? We conducted field mesocosm experiments at 16 sites and compiled acute LC(50)s from published laboratory studies. We found high variation in LC(50)s for Cl- tolerance in multiple species, which, in the experiment, was only explained by zooplankton community composition. Variation in species-LC50 was high enough that at 45% of lakes, community response was not predictable based on species tolerances measured at other sites. This suggests that water quality guidelines should be based on multiple populations and communities to account for large intraspecific variation in Cl- tolerance.

Published
2023
Full Text
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4. Widespread variation in salt tolerance within freshwater zooplankton species reduces the predictability of community-level salt tolerance

Author

Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Derry, Alison M., Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Derry, Alison M.

Abstract

The salinization of freshwaters is a global threat to aquatic biodiversity. We quantified variation in chloride (Cl-) tolerance of 19 freshwater zooplankton species in four countries to answer three questions: (1) How much variation in Cl- tolerance is present among populations? (2) What factors predict intraspecific variation in Cl- tolerance? (3) Must we account for intraspecific variation to accurately predict community Cl- tolerance? We conducted field mesocosm experiments at 16 sites and compiled acute LC(50)s from published laboratory studies. We found high variation in LC(50)s for Cl- tolerance in multiple species, which, in the experiment, was only explained by zooplankton community composition. Variation in species-LC50 was high enough that at 45% of lakes, community response was not predictable based on species tolerances measured at other sites. This suggests that water quality guidelines should be based on multiple populations and communities to account for large intraspecific variation in Cl- tolerance.

Published
2023
Full Text
View/download PDF

5. Widespread variation in salt tolerance within freshwater zooplankton species reduces the predictability of community-level salt tolerance

Author

Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Derry, Alison M., Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Derry, Alison M.

Abstract

The salinization of freshwaters is a global threat to aquatic biodiversity. We quantified variation in chloride (Cl-) tolerance of 19 freshwater zooplankton species in four countries to answer three questions: (1) How much variation in Cl- tolerance is present among populations? (2) What factors predict intraspecific variation in Cl- tolerance? (3) Must we account for intraspecific variation to accurately predict community Cl- tolerance? We conducted field mesocosm experiments at 16 sites and compiled acute LC(50)s from published laboratory studies. We found high variation in LC(50)s for Cl- tolerance in multiple species, which, in the experiment, was only explained by zooplankton community composition. Variation in species-LC50 was high enough that at 45% of lakes, community response was not predictable based on species tolerances measured at other sites. This suggests that water quality guidelines should be based on multiple populations and communities to account for large intraspecific variation in Cl- tolerance.

Published
2023
Full Text
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6. Widespread variation in salt tolerance within freshwater zooplankton species reduces the predictability of community-level salt tolerance

Author

Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Derry, Alison M., Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Derry, Alison M.

Abstract

The salinization of freshwaters is a global threat to aquatic biodiversity. We quantified variation in chloride (Cl-) tolerance of 19 freshwater zooplankton species in four countries to answer three questions: (1) How much variation in Cl- tolerance is present among populations? (2) What factors predict intraspecific variation in Cl- tolerance? (3) Must we account for intraspecific variation to accurately predict community Cl- tolerance? We conducted field mesocosm experiments at 16 sites and compiled acute LC(50)s from published laboratory studies. We found high variation in LC(50)s for Cl- tolerance in multiple species, which, in the experiment, was only explained by zooplankton community composition. Variation in species-LC50 was high enough that at 45% of lakes, community response was not predictable based on species tolerances measured at other sites. This suggests that water quality guidelines should be based on multiple populations and communities to account for large intraspecific variation in Cl- tolerance.

Published
2023
Full Text
View/download PDF

7. Widespread variation in salt tolerance within freshwater zooplankton species reduces the predictability of community-level salt tolerance

Author

Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Derry, Alison M., Arnott, Shelley E., Fugere, Vincent, Symons, Celia C., Melles, Stephanie J., Beisner, Beatrix E., Canedo-Arguelles, Miguel, Hebert, Marie-Pier, Brentrup, Jennifer A., Downing, Amy L., Gray, Derek K., Greco, Danielle, Hintz, William D., McClymont, Alexandra, Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Gobeler, Norman, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Moffett, Emma R., Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Derry, Alison M.

Abstract

The salinization of freshwaters is a global threat to aquatic biodiversity. We quantified variation in chloride (Cl-) tolerance of 19 freshwater zooplankton species in four countries to answer three questions: (1) How much variation in Cl- tolerance is present among populations? (2) What factors predict intraspecific variation in Cl- tolerance? (3) Must we account for intraspecific variation to accurately predict community Cl- tolerance? We conducted field mesocosm experiments at 16 sites and compiled acute LC(50)s from published laboratory studies. We found high variation in LC(50)s for Cl- tolerance in multiple species, which, in the experiment, was only explained by zooplankton community composition. Variation in species-LC50 was high enough that at 45% of lakes, community response was not predictable based on species tolerances measured at other sites. This suggests that water quality guidelines should be based on multiple populations and communities to account for large intraspecific variation in Cl- tolerance.

Published
2023
Full Text
View/download PDF

8. Lake salinization drives consistent losses of zooplankton abundance and diversity across coordinated mesocosm experiments

Author

Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Beisner, Beatrix E., Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Beisner, Beatrix E.

Abstract

Human-induced salinization increasingly threatens inland waters; yet we know little about the multifaceted response of lake communities to salt contamination. By conducting a coordinated mesocosm experiment of lake salinization across 16 sites in North America and Europe, we quantified the response of zooplankton abundance and (taxonomic and functional) community structure to a broad gradient of environmentally relevant chloride concentrations, ranging from 4 to ca. 1400 mg Cl- L-1. We found that crustaceans were distinctly more sensitive to elevated chloride than rotifers; yet, rotifers did not show compensatory abundance increases in response to crustacean declines. For crustaceans, our among-site comparisons indicate: (1) highly consistent decreases in abundance and taxon richness with salinity; (2) widespread chloride sensitivity across major taxonomic groups (Cladocera, Cyclopoida, and Calanoida); and (3) weaker loss of functional than taxonomic diversity. Overall, our study demonstrates that aggregate properties of zooplankton communities can be adversely affected at chloride concentrations relevant to anthropogenic salinization in lakes.

Published
2023
Full Text
View/download PDF

9. Lake salinization drives consistent losses of zooplankton abundance and diversity across coordinated mesocosm experiments

Author

Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Beisner, Beatrix E., Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Beisner, Beatrix E.

Abstract

Human-induced salinization increasingly threatens inland waters; yet we know little about the multifaceted response of lake communities to salt contamination. By conducting a coordinated mesocosm experiment of lake salinization across 16 sites in North America and Europe, we quantified the response of zooplankton abundance and (taxonomic and functional) community structure to a broad gradient of environmentally relevant chloride concentrations, ranging from 4 to ca. 1400 mg Cl- L-1. We found that crustaceans were distinctly more sensitive to elevated chloride than rotifers; yet, rotifers did not show compensatory abundance increases in response to crustacean declines. For crustaceans, our among-site comparisons indicate: (1) highly consistent decreases in abundance and taxon richness with salinity; (2) widespread chloride sensitivity across major taxonomic groups (Cladocera, Cyclopoida, and Calanoida); and (3) weaker loss of functional than taxonomic diversity. Overall, our study demonstrates that aggregate properties of zooplankton communities can be adversely affected at chloride concentrations relevant to anthropogenic salinization in lakes.

Published
2023
Full Text
View/download PDF

10. Lake salinization drives consistent losses of zooplankton abundance and diversity across coordinated mesocosm experiments

Author

Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Beisner, Beatrix E., Hebert, Marie-Pier, Symons, Celia C., Canedo-Arguelles, Miguel, Arnott, Shelley E., Derry, Alison M., Fugere, Vincent, Hintz, William D., Melles, Stephanie J., Astorg, Louis, Baker, Henry K., Brentrup, Jennifer A., Downing, Amy L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn M., Giorgio, Angelina T., Göbeler, Norman, Gray, Derek K., Greco, Danielle, Hassal, Emily, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea, Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, McClymont, Alexandra, Proia, Lorenzo, Relyea, Rick A., Rusak, James A., Schuler, Matthew S., Searle, Catherine L., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Cordero, Pablo Urrutia, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., and Beisner, Beatrix E.

Abstract

Human-induced salinization increasingly threatens inland waters; yet we know little about the multifaceted response of lake communities to salt contamination. By conducting a coordinated mesocosm experiment of lake salinization across 16 sites in North America and Europe, we quantified the response of zooplankton abundance and (taxonomic and functional) community structure to a broad gradient of environmentally relevant chloride concentrations, ranging from 4 to ca. 1400 mg Cl- L-1. We found that crustaceans were distinctly more sensitive to elevated chloride than rotifers; yet, rotifers did not show compensatory abundance increases in response to crustacean declines. For crustaceans, our among-site comparisons indicate: (1) highly consistent decreases in abundance and taxon richness with salinity; (2) widespread chloride sensitivity across major taxonomic groups (Cladocera, Cyclopoida, and Calanoida); and (3) weaker loss of functional than taxonomic diversity. Overall, our study demonstrates that aggregate properties of zooplankton communities can be adversely affected at chloride concentrations relevant to anthropogenic salinization in lakes.

Published
2023
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11. Current water quality guidelines across North America and Europe do not protect lakes from salinization

Author

Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, and Weyhenmeyer, Gesa A.

Abstract

Human-induced salinization caused by the use of road deicing salts, agricultural practices, mining operations, and climate change is a major threat to the biodiversity and functioning of freshwater ecosystems. Yet, it is unclear if freshwater ecosystems are protected from salinization by current water quality guidelines. Leveraging an experimental network of land-based and in-lake mesocosms across North America and Europe, we tested how salinization—indicated as elevated chloride (Cl−) concentration—will affect lake food webs and if two of the lowest Cl− thresholds found globally are sufficient to protect these food webs. Our results indicated that salinization will cause substantial zooplankton mortality at the lowest Cl− thresholds established in Canada (120 mg Cl−/L) and the United States (230 mg Cl−/L) and throughout Europe where Cl− thresholds are generally higher. For instance, at 73% of our study sites, Cl− concentrations that caused a ≥50% reduction in cladoceran abundance were at or below Cl− thresholds in Canada, in the United States, and throughout Europe. Similar trends occurred for copepod and rotifer zooplankton. The loss of zooplankton triggered a cascading effect causing an increase in phytoplankton biomass at 47% of study sites. Such changes in lake food webs could alter nutrient cycling and water clarity and trigger declines in fish production. Current Cl− thresholds across North America and Europe clearly do not adequately protect lake food webs. Water quality guidelines should be developed where they do not exist, and there is an urgent need to reassess existing guidelines to protect lake ecosystems from human-induced salinization., This article contains supporting information online at https://www.pnas.org/lookup/suppl/doi:10.1073/pnas.2115033119/-/DCSupplemental

Published
2022
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12. Current water quality guidelines across North America and Europe do not protect lakes from salinization

Author

Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, and Weyhenmeyer, Gesa A.

Abstract

Human-induced salinization caused by the use of road deicing salts, agricultural practices, mining operations, and climate change is a major threat to the biodiversity and functioning of freshwater ecosystems. Yet, it is unclear if freshwater ecosystems are protected from salinization by current water quality guidelines. Leveraging an experimental network of land-based and in-lake mesocosms across North America and Europe, we tested how salinization—indicated as elevated chloride (Cl−) concentration—will affect lake food webs and if two of the lowest Cl− thresholds found globally are sufficient to protect these food webs. Our results indicated that salinization will cause substantial zooplankton mortality at the lowest Cl− thresholds established in Canada (120 mg Cl−/L) and the United States (230 mg Cl−/L) and throughout Europe where Cl− thresholds are generally higher. For instance, at 73% of our study sites, Cl− concentrations that caused a ≥50% reduction in cladoceran abundance were at or below Cl− thresholds in Canada, in the United States, and throughout Europe. Similar trends occurred for copepod and rotifer zooplankton. The loss of zooplankton triggered a cascading effect causing an increase in phytoplankton biomass at 47% of study sites. Such changes in lake food webs could alter nutrient cycling and water clarity and trigger declines in fish production. Current Cl− thresholds across North America and Europe clearly do not adequately protect lake food webs. Water quality guidelines should be developed where they do not exist, and there is an urgent need to reassess existing guidelines to protect lake ecosystems from human-induced salinization., This article contains supporting information online at https://www.pnas.org/lookup/suppl/doi:10.1073/pnas.2115033119/-/DCSupplemental

Published
2022
Full Text
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13. Current water quality guidelines across North America and Europe do not protect lakes from salinization

Author

Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, and Weyhenmeyer, Gesa A.

Abstract

Human-induced salinization caused by the use of road deicing salts, agricultural practices, mining operations, and climate change is a major threat to the biodiversity and functioning of freshwater ecosystems. Yet, it is unclear if freshwater ecosystems are protected from salinization by current water quality guidelines. Leveraging an experimental network of land-based and in-lake mesocosms across North America and Europe, we tested how salinization—indicated as elevated chloride (Cl−) concentration—will affect lake food webs and if two of the lowest Cl− thresholds found globally are sufficient to protect these food webs. Our results indicated that salinization will cause substantial zooplankton mortality at the lowest Cl− thresholds established in Canada (120 mg Cl−/L) and the United States (230 mg Cl−/L) and throughout Europe where Cl− thresholds are generally higher. For instance, at 73% of our study sites, Cl− concentrations that caused a ≥50% reduction in cladoceran abundance were at or below Cl− thresholds in Canada, in the United States, and throughout Europe. Similar trends occurred for copepod and rotifer zooplankton. The loss of zooplankton triggered a cascading effect causing an increase in phytoplankton biomass at 47% of study sites. Such changes in lake food webs could alter nutrient cycling and water clarity and trigger declines in fish production. Current Cl− thresholds across North America and Europe clearly do not adequately protect lake food webs. Water quality guidelines should be developed where they do not exist, and there is an urgent need to reassess existing guidelines to protect lake ecosystems from human-induced salinization., This article contains supporting information online at https://www.pnas.org/lookup/suppl/doi:10.1073/pnas.2115033119/-/DCSupplemental

Published
2022
Full Text
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14. Current water quality guidelines across North America and Europe do not protect lakes from salinization

Author

Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, and Weyhenmeyer, Gesa A.

Abstract

Human-induced salinization caused by the use of road deicing salts, agricultural practices, mining operations, and climate change is a major threat to the biodiversity and functioning of freshwater ecosystems. Yet, it is unclear if freshwater ecosystems are protected from salinization by current water quality guidelines. Leveraging an experimental network of land-based and in-lake mesocosms across North America and Europe, we tested how salinization—indicated as elevated chloride (Cl−) concentration—will affect lake food webs and if two of the lowest Cl− thresholds found globally are sufficient to protect these food webs. Our results indicated that salinization will cause substantial zooplankton mortality at the lowest Cl− thresholds established in Canada (120 mg Cl−/L) and the United States (230 mg Cl−/L) and throughout Europe where Cl− thresholds are generally higher. For instance, at 73% of our study sites, Cl− concentrations that caused a ≥50% reduction in cladoceran abundance were at or below Cl− thresholds in Canada, in the United States, and throughout Europe. Similar trends occurred for copepod and rotifer zooplankton. The loss of zooplankton triggered a cascading effect causing an increase in phytoplankton biomass at 47% of study sites. Such changes in lake food webs could alter nutrient cycling and water clarity and trigger declines in fish production. Current Cl− thresholds across North America and Europe clearly do not adequately protect lake food webs. Water quality guidelines should be developed where they do not exist, and there is an urgent need to reassess existing guidelines to protect lake ecosystems from human-induced salinization., This article contains supporting information online at https://www.pnas.org/lookup/suppl/doi:10.1073/pnas.2115033119/-/DCSupplemental

Published
2022
Full Text
View/download PDF

15. Current water quality guidelines across North America and Europe do not protect lakes from salinization

Author

Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, Weyhenmeyer, Gesa A., Hintz, William D., Arnott, Shelley E., Symons, Celia C., Greco, Danielle A., McClymont, Alexandra, Brentrup, Jennifer A., Cañedo-Argüelles, Miguel, Derry, Alison M., Downing, Amy L., Gray, Derek K., Melles, Stephanie J., Relyea, Rick A., Rusak, James A., Searle, Catherine L., Astorg, Louis, Baker, Henry K., Beisner, Beatrix E., Cottingham, Kathryn L., Ersoy, Zeynep, Espinosa, Carmen, Franceschini, Jaclyn, Giorgio, Angelina T., Göbeler, Norman, Hassal, Emily, Hébert, Marie-Pier, Huynh, Mercedes, Hylander, Samuel, Jonasen, Kacie L., Kirkwood, Andrea E., Langenheder, Silke, Langvall, Ola, Laudon, Hjalmar, Lind, Lovisa, Lundgren, Maria, Proia, Lorenzo, Schuler, Matthew S., Shurin, Jonathan B., Steiner, Christopher F., Striebel, Maren, Thibodeau, Simon, Urrutia-Cordero, Pablo, Vendrell-Puigmitja, Lidia, and Weyhenmeyer, Gesa A.

Abstract

Human-induced salinization caused by the use of road deicing salts, agricultural practices, mining operations, and climate change is a major threat to the biodiversity and functioning of freshwater ecosystems. Yet, it is unclear if freshwater ecosystems are protected from salinization by current water quality guidelines. Leveraging an experimental network of land-based and in-lake mesocosms across North America and Europe, we tested how salinization—indicated as elevated chloride (Cl−) concentration—will affect lake food webs and if two of the lowest Cl− thresholds found globally are sufficient to protect these food webs. Our results indicated that salinization will cause substantial zooplankton mortality at the lowest Cl− thresholds established in Canada (120 mg Cl−/L) and the United States (230 mg Cl−/L) and throughout Europe where Cl− thresholds are generally higher. For instance, at 73% of our study sites, Cl− concentrations that caused a ≥50% reduction in cladoceran abundance were at or below Cl− thresholds in Canada, in the United States, and throughout Europe. Similar trends occurred for copepod and rotifer zooplankton. The loss of zooplankton triggered a cascading effect causing an increase in phytoplankton biomass at 47% of study sites. Such changes in lake food webs could alter nutrient cycling and water clarity and trigger declines in fish production. Current Cl− thresholds across North America and Europe clearly do not adequately protect lake food webs. Water quality guidelines should be developed where they do not exist, and there is an urgent need to reassess existing guidelines to protect lake ecosystems from human-induced salinization., This article contains supporting information online at https://www.pnas.org/lookup/suppl/doi:10.1073/pnas.2115033119/-/DCSupplemental

Published
2022
Full Text
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