Toward predicting climate change effects on lakes: a comparison of 1656 shallow lakes from Florida and Denmark reveals substantial differences in nutrient dynamics, metabolism, trophic structure, and top-down control

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Toward predicting climate change effects on lakes : a comparison of 1656 shallow lakes from Florida and Denmark reveals substantial differences in nutrient dynamics, metabolism, trophic structure, and top-down control. / Jeppesen, Erik; Canfield, Daniel E.; Bachmann, Roger W.; Søndergaard, Martin; Havens, Karl E.; Johansson, Liselotte S.; Lauridsen, Torben L.; Sh, Tserenpil; Rutter, Robert P.; Warren, Gary; Ji, Gaohua; Hoyer, Mark V.

In: Inland Waters, Vol. 10, No. 2, 2020, p. 197-211.

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@article{8a250cb1257841408b7c5bead4bb2825,
title = "Toward predicting climate change effects on lakes: a comparison of 1656 shallow lakes from Florida and Denmark reveals substantial differences in nutrient dynamics, metabolism, trophic structure, and top-down control",
abstract = "Rapid climate changes may potentially have strong impacts on the ecosystem structure and nutrient dynamics of lakes as well as implications for water quality. We used a space-for-time approach to elucidate such possible effects by comparing data from 1656 shallow lakes (mean depth <3 m) in north temperate Denmark (DK) and subtropical Florida (FL). The lakes were categorized into 7 total phosphorus (TP) classes within the range of 2 to 300 µg L−1. Physicochemical variables showed significant seasonal differences, which can be attributed to different sunlight regimes and temperatures. The FL lakes had overall higher fish biomasses (notably in the littoral zone) but a substantially lower zooplankton biomass and body mass of microcrustaceans, a much lower zooplankton:phytoplankton biomass ratio (lower grazing on phytoplankton), and a markedly lower biomass of benthic invertebrates, indicating much greater control of consumers by fish in the FL lakes. Accordingly, the summer phytoplankton biomass was higher in the FL lakes. Cyanobacteria in summer were proportionally more important in the FL lakes at all TP levels, whereas the proportion of dinophytes, chrysophytes, and cryptophytes was higher in the DK lakes at low TP. Submerged macrophytes occurred at higher TP (>100 µg L−1) in the FL lakes, but coverage was higher in the DK lakes at low TP. We also found lower oxygen saturation in the nutrient-rich FL lakes than in the DK lakes, suggesting lower net ecosystem production in the FL lakes. We discuss our results within the framework of climate warming.",
keywords = "benthic invertebrates, fish, macrophytes, nutrients, plankton",
author = "Erik Jeppesen and Canfield, {Daniel E.} and Bachmann, {Roger W.} and Martin S{\o}ndergaard and Havens, {Karl E.} and Johansson, {Liselotte S.} and Lauridsen, {Torben L.} and Tserenpil Sh and Rutter, {Robert P.} and Gary Warren and Gaohua Ji and Hoyer, {Mark V.}",
year = "2020",
doi = "10.1080/20442041.2020.1711681",
language = "English",
volume = "10",
pages = "197--211",
journal = "Inland Waters",
issn = "2044-2041",
publisher = "Freshwater Biological Association",
number = "2",

}

RIS

TY - JOUR

T1 - Toward predicting climate change effects on lakes

T2 - a comparison of 1656 shallow lakes from Florida and Denmark reveals substantial differences in nutrient dynamics, metabolism, trophic structure, and top-down control

AU - Jeppesen, Erik

AU - Canfield, Daniel E.

AU - Bachmann, Roger W.

AU - Søndergaard, Martin

AU - Havens, Karl E.

AU - Johansson, Liselotte S.

AU - Lauridsen, Torben L.

AU - Sh, Tserenpil

AU - Rutter, Robert P.

AU - Warren, Gary

AU - Ji, Gaohua

AU - Hoyer, Mark V.

PY - 2020

Y1 - 2020

N2 - Rapid climate changes may potentially have strong impacts on the ecosystem structure and nutrient dynamics of lakes as well as implications for water quality. We used a space-for-time approach to elucidate such possible effects by comparing data from 1656 shallow lakes (mean depth <3 m) in north temperate Denmark (DK) and subtropical Florida (FL). The lakes were categorized into 7 total phosphorus (TP) classes within the range of 2 to 300 µg L−1. Physicochemical variables showed significant seasonal differences, which can be attributed to different sunlight regimes and temperatures. The FL lakes had overall higher fish biomasses (notably in the littoral zone) but a substantially lower zooplankton biomass and body mass of microcrustaceans, a much lower zooplankton:phytoplankton biomass ratio (lower grazing on phytoplankton), and a markedly lower biomass of benthic invertebrates, indicating much greater control of consumers by fish in the FL lakes. Accordingly, the summer phytoplankton biomass was higher in the FL lakes. Cyanobacteria in summer were proportionally more important in the FL lakes at all TP levels, whereas the proportion of dinophytes, chrysophytes, and cryptophytes was higher in the DK lakes at low TP. Submerged macrophytes occurred at higher TP (>100 µg L−1) in the FL lakes, but coverage was higher in the DK lakes at low TP. We also found lower oxygen saturation in the nutrient-rich FL lakes than in the DK lakes, suggesting lower net ecosystem production in the FL lakes. We discuss our results within the framework of climate warming.

AB - Rapid climate changes may potentially have strong impacts on the ecosystem structure and nutrient dynamics of lakes as well as implications for water quality. We used a space-for-time approach to elucidate such possible effects by comparing data from 1656 shallow lakes (mean depth <3 m) in north temperate Denmark (DK) and subtropical Florida (FL). The lakes were categorized into 7 total phosphorus (TP) classes within the range of 2 to 300 µg L−1. Physicochemical variables showed significant seasonal differences, which can be attributed to different sunlight regimes and temperatures. The FL lakes had overall higher fish biomasses (notably in the littoral zone) but a substantially lower zooplankton biomass and body mass of microcrustaceans, a much lower zooplankton:phytoplankton biomass ratio (lower grazing on phytoplankton), and a markedly lower biomass of benthic invertebrates, indicating much greater control of consumers by fish in the FL lakes. Accordingly, the summer phytoplankton biomass was higher in the FL lakes. Cyanobacteria in summer were proportionally more important in the FL lakes at all TP levels, whereas the proportion of dinophytes, chrysophytes, and cryptophytes was higher in the DK lakes at low TP. Submerged macrophytes occurred at higher TP (>100 µg L−1) in the FL lakes, but coverage was higher in the DK lakes at low TP. We also found lower oxygen saturation in the nutrient-rich FL lakes than in the DK lakes, suggesting lower net ecosystem production in the FL lakes. We discuss our results within the framework of climate warming.

KW - benthic invertebrates

KW - fish

KW - macrophytes

KW - nutrients

KW - plankton

UR - http://www.scopus.com/inward/record.url?scp=85081252839&partnerID=8YFLogxK

U2 - 10.1080/20442041.2020.1711681

DO - 10.1080/20442041.2020.1711681

M3 - Journal article

AN - SCOPUS:85081252839

VL - 10

SP - 197

EP - 211

JO - Inland Waters

JF - Inland Waters

SN - 2044-2041

IS - 2

ER -