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Erik Jeppesen

Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan-European mesocosm experiment

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Standard

Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient : A pan-European mesocosm experiment. / Ersoy, Zeynep; Scharfenberger, Ulrike; Baho, Didier L.; Bucak, Tuba; Feldmann, Tõnu; Hejzlar, Josef; Levi, Eti E.; Mahdy, Aldoushy; Nõges, Tiina; Papastergiadou, Eva; Stefanidis, Konstantinos; Šorf, Michal; Søndergaard, Martin; Trigal, Cristina; Jeppesen, Erik; Beklioğlu, Meryem.

In: Global Change Biology, Vol. 26, No. 12, 12.2020, p. 6831-6851.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Ersoy, Z, Scharfenberger, U, Baho, DL, Bucak, T, Feldmann, T, Hejzlar, J, Levi, EE, Mahdy, A, Nõges, T, Papastergiadou, E, Stefanidis, K, Šorf, M, Søndergaard, M, Trigal, C, Jeppesen, E & Beklioğlu, M 2020, 'Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan-European mesocosm experiment', Global Change Biology, vol. 26, no. 12, pp. 6831-6851. https://doi.org/10.1111/gcb.15338

APA

Ersoy, Z., Scharfenberger, U., Baho, D. L., Bucak, T., Feldmann, T., Hejzlar, J., Levi, E. E., Mahdy, A., Nõges, T., Papastergiadou, E., Stefanidis, K., Šorf, M., Søndergaard, M., Trigal, C., Jeppesen, E., & Beklioğlu, M. (2020). Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan-European mesocosm experiment. Global Change Biology, 26(12), 6831-6851. https://doi.org/10.1111/gcb.15338

CBE

Ersoy Z, Scharfenberger U, Baho DL, Bucak T, Feldmann T, Hejzlar J, Levi EE, Mahdy A, Nõges T, Papastergiadou E, Stefanidis K, Šorf M, Søndergaard M, Trigal C, Jeppesen E, Beklioğlu M. 2020. Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan-European mesocosm experiment. Global Change Biology. 26(12):6831-6851. https://doi.org/10.1111/gcb.15338

MLA

Vancouver

Ersoy Z, Scharfenberger U, Baho DL, Bucak T, Feldmann T, Hejzlar J et al. Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan-European mesocosm experiment. Global Change Biology. 2020 Dec;26(12):6831-6851. https://doi.org/10.1111/gcb.15338

Author

Ersoy, Zeynep ; Scharfenberger, Ulrike ; Baho, Didier L. ; Bucak, Tuba ; Feldmann, Tõnu ; Hejzlar, Josef ; Levi, Eti E. ; Mahdy, Aldoushy ; Nõges, Tiina ; Papastergiadou, Eva ; Stefanidis, Konstantinos ; Šorf, Michal ; Søndergaard, Martin ; Trigal, Cristina ; Jeppesen, Erik ; Beklioğlu, Meryem. / Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient : A pan-European mesocosm experiment. In: Global Change Biology. 2020 ; Vol. 26, No. 12. pp. 6831-6851.

Bibtex

@article{6f1a62e5b93d4b0eb9fa6d414b7debee,
title = "Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan-European mesocosm experiment",
abstract = "Submerged macrophytes are of key importance for the structure and functioning of shallow lakes and can be decisive for maintaining them in a clear water state. The ongoing climate change affects the macrophytes through changes in temperature and precipitation, causing variations in nutrient load, water level and light availability. To investigate how these factors jointly determine macrophyte dominance and growth, we conducted a highly standardized pan-European experiment involving the installation of mesocosms in lakes. The experimental design consisted of mesotrophic and eutrophic nutrient conditions at 1 m (shallow) and 2 m (deep) depth along a latitudinal temperature gradient with average water temperatures ranging from 14.9 to 23.9°C (Sweden to Greece) and a natural drop in water levels in the warmest countries (Greece and Turkey). We determined percent plant volume inhabited (PVI) of submerged macrophytes on a monthly basis for 5 months and dry weight at the end of the experiment. Over the temperature gradient, PVI was highest in the shallow mesotrophic mesocosms followed by intermediate levels in the shallow eutrophic and deep mesotrophic mesocosms, and lowest levels in the deep eutrophic mesocosms. We identified three pathways along which water temperature likely affected PVI, exhibiting (a) a direct positive effect if light was not limiting; (b) an indirect positive effect due to an evaporation-driven water level reduction, causing a nonlinear increase in mean available light; and (c) an indirect negative effect through algal growth and, thus, high light attenuation under eutrophic conditions. We conclude that high temperatures combined with a temperature-mediated water level decrease can counterbalance the negative effects of eutrophic conditions on macrophytes by enhancing the light availability. While a water level reduction can promote macrophyte dominance, an extreme reduction will likely decrease macrophyte biomass and, consequently, their capacity to function as a carbon store and food source.",
keywords = "climate change, latitudinal gradient, macrophytes, mesocosm, nutrients, shallow lakes, water level, water temperature",
author = "Zeynep Ersoy and Ulrike Scharfenberger and Baho, {Didier L.} and Tuba Bucak and T{\~o}nu Feldmann and Josef Hejzlar and Levi, {Eti E.} and Aldoushy Mahdy and Tiina N{\~o}ges and Eva Papastergiadou and Konstantinos Stefanidis and Michal {\v S}orf and Martin S{\o}ndergaard and Cristina Trigal and Erik Jeppesen and Meryem Beklioğlu",
year = "2020",
month = dec,
doi = "10.1111/gcb.15338",
language = "English",
volume = "26",
pages = "6831--6851",
journal = "Global Change Biology",
issn = "1354-1013",
publisher = "Wiley-Blackwell Publishing Ltd.",
number = "12",

}

RIS

TY - JOUR

T1 - Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient

T2 - A pan-European mesocosm experiment

AU - Ersoy, Zeynep

AU - Scharfenberger, Ulrike

AU - Baho, Didier L.

AU - Bucak, Tuba

AU - Feldmann, Tõnu

AU - Hejzlar, Josef

AU - Levi, Eti E.

AU - Mahdy, Aldoushy

AU - Nõges, Tiina

AU - Papastergiadou, Eva

AU - Stefanidis, Konstantinos

AU - Šorf, Michal

AU - Søndergaard, Martin

AU - Trigal, Cristina

AU - Jeppesen, Erik

AU - Beklioğlu, Meryem

PY - 2020/12

Y1 - 2020/12

N2 - Submerged macrophytes are of key importance for the structure and functioning of shallow lakes and can be decisive for maintaining them in a clear water state. The ongoing climate change affects the macrophytes through changes in temperature and precipitation, causing variations in nutrient load, water level and light availability. To investigate how these factors jointly determine macrophyte dominance and growth, we conducted a highly standardized pan-European experiment involving the installation of mesocosms in lakes. The experimental design consisted of mesotrophic and eutrophic nutrient conditions at 1 m (shallow) and 2 m (deep) depth along a latitudinal temperature gradient with average water temperatures ranging from 14.9 to 23.9°C (Sweden to Greece) and a natural drop in water levels in the warmest countries (Greece and Turkey). We determined percent plant volume inhabited (PVI) of submerged macrophytes on a monthly basis for 5 months and dry weight at the end of the experiment. Over the temperature gradient, PVI was highest in the shallow mesotrophic mesocosms followed by intermediate levels in the shallow eutrophic and deep mesotrophic mesocosms, and lowest levels in the deep eutrophic mesocosms. We identified three pathways along which water temperature likely affected PVI, exhibiting (a) a direct positive effect if light was not limiting; (b) an indirect positive effect due to an evaporation-driven water level reduction, causing a nonlinear increase in mean available light; and (c) an indirect negative effect through algal growth and, thus, high light attenuation under eutrophic conditions. We conclude that high temperatures combined with a temperature-mediated water level decrease can counterbalance the negative effects of eutrophic conditions on macrophytes by enhancing the light availability. While a water level reduction can promote macrophyte dominance, an extreme reduction will likely decrease macrophyte biomass and, consequently, their capacity to function as a carbon store and food source.

AB - Submerged macrophytes are of key importance for the structure and functioning of shallow lakes and can be decisive for maintaining them in a clear water state. The ongoing climate change affects the macrophytes through changes in temperature and precipitation, causing variations in nutrient load, water level and light availability. To investigate how these factors jointly determine macrophyte dominance and growth, we conducted a highly standardized pan-European experiment involving the installation of mesocosms in lakes. The experimental design consisted of mesotrophic and eutrophic nutrient conditions at 1 m (shallow) and 2 m (deep) depth along a latitudinal temperature gradient with average water temperatures ranging from 14.9 to 23.9°C (Sweden to Greece) and a natural drop in water levels in the warmest countries (Greece and Turkey). We determined percent plant volume inhabited (PVI) of submerged macrophytes on a monthly basis for 5 months and dry weight at the end of the experiment. Over the temperature gradient, PVI was highest in the shallow mesotrophic mesocosms followed by intermediate levels in the shallow eutrophic and deep mesotrophic mesocosms, and lowest levels in the deep eutrophic mesocosms. We identified three pathways along which water temperature likely affected PVI, exhibiting (a) a direct positive effect if light was not limiting; (b) an indirect positive effect due to an evaporation-driven water level reduction, causing a nonlinear increase in mean available light; and (c) an indirect negative effect through algal growth and, thus, high light attenuation under eutrophic conditions. We conclude that high temperatures combined with a temperature-mediated water level decrease can counterbalance the negative effects of eutrophic conditions on macrophytes by enhancing the light availability. While a water level reduction can promote macrophyte dominance, an extreme reduction will likely decrease macrophyte biomass and, consequently, their capacity to function as a carbon store and food source.

KW - climate change

KW - latitudinal gradient

KW - macrophytes

KW - mesocosm

KW - nutrients

KW - shallow lakes

KW - water level

KW - water temperature

UR - http://www.scopus.com/inward/record.url?scp=85091608870&partnerID=8YFLogxK

U2 - 10.1111/gcb.15338

DO - 10.1111/gcb.15338

M3 - Journal article

C2 - 32893967

AN - SCOPUS:85091608870

VL - 26

SP - 6831

EP - 6851

JO - Global Change Biology

JF - Global Change Biology

SN - 1354-1013

IS - 12

ER -