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Macrophyte assessment in European lakes: diverse approaches but convergent views of ‘good’ ecological status

Onderzoeksoutput: Bijdrage aan tijdschriftA1: Web of Science-artikel

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Macrophyte assessment in European lakes: diverse approaches but convergent views of ‘good’ ecological status. / Poikane, Sandra; Portielje, Rob; Denys, Luc; Elferts, Didzis; Kelly, Martyn; Kolada, Agnieszka; Mäemets, Helle; Phillips, Geoff; Søndergaard, Martin; J. Willby, Nigel; van den Berg, Marcel S.

In: Ecological Indicators, Vol. 94, 11.2018, blz. 185-197.

Onderzoeksoutput: Bijdrage aan tijdschriftA1: Web of Science-artikel

Harvard

Poikane, S, Portielje, R, Denys, L, Elferts, D, Kelly, M, Kolada, A, Mäemets, H, Phillips, G, Søndergaard, M, J. Willby, N & van den Berg, MS 2018, 'Macrophyte assessment in European lakes: diverse approaches but convergent views of ‘good’ ecological status', Ecological Indicators, vol. 94, blz. 185-197. https://doi.org/10.1016/j.ecolind.2018.06.056

APA

Author

Poikane, Sandra ; Portielje, Rob ; Denys, Luc ; Elferts, Didzis ; Kelly, Martyn ; Kolada, Agnieszka ; Mäemets, Helle ; Phillips, Geoff ; Søndergaard, Martin ; J. Willby, Nigel ; van den Berg, Marcel S. / Macrophyte assessment in European lakes: diverse approaches but convergent views of ‘good’ ecological status. In: Ecological Indicators. 2018 ; Vol. 94. blz. 185-197.

Bibtex

@article{1f8b317ab989409b87140f73314e6d31,
title = "Macrophyte assessment in European lakes: diverse approaches but convergent views of ‘good’ ecological status",
abstract = "The European Water Framework Directive has been adopted by Member States to assess and manage the ecological integrity of surface waters. Specific challenges include harmonizing diverse assessment systems across Europe, linking ecological assessment to restoration measures and reaching a common view on 'good' ecological status. In this study, nine national macrophyte-based approaches for assessing ecological status were compared and harmonized, using a large dataset of 539 European lakes. A macrophyte common metric, representing the average standardized view of each lake by all countries, was used to compare national methods. This was also shown to reflect the total phosphorus (r 2 = 0.32), total nitrogen (r 2 = 0.22) as well as chlorophyll- a (r 2 = 0.35-0.38) gradients, providing a link between ecological data, stressors and management decisions. Despite differing assessment approaches and initial differences in classification, a consensus was reached on how type-specific macrophyte assemblages change across the ecological status gradient and where ecological status boundaries should lie. A marked decline in submerged vegetation, especially Charophyta (characterizing 'good' status), and an increase in abundance of free-floating plants (characterizing 'less than good' status) were the most significant changes along the ecological status gradient. Macrophyte communities of 'good' status lakes were diverse with many charophytes and several Potamogeton species. A large number of taxa occurred across the entire gradient, but only a minority dominated at 'less than good' status, including filamentous algae, lemnids, nymphaeids, and several elodeids (e.g., Zannichellia palustris and Elodea nuttallii). Our findings establish a 'guiding image' of the macrophyte community at 'good' ecological status in hard-water lakes of the Central-Baltic region of Europe.",
author = "Sandra Poikane and Rob Portielje and Luc Denys and Didzis Elferts and Martyn Kelly and Agnieszka Kolada and Helle M{\"a}emets and Geoff Phillips and Martin S{\o}ndergaard and {J. Willby}, Nigel and {van den Berg}, {Marcel S.}",
year = "2018",
month = "11",
doi = "10.1016/j.ecolind.2018.06.056",
language = "English",
volume = "94",
pages = "185--197",
journal = "Ecological Indicators",
issn = "1470-160X",
publisher = "Elsevier Science",

}

RIS

TY - JOUR

T1 - Macrophyte assessment in European lakes: diverse approaches but convergent views of ‘good’ ecological status

AU - Poikane, Sandra

AU - Portielje, Rob

AU - Denys, Luc

AU - Elferts, Didzis

AU - Kelly, Martyn

AU - Kolada, Agnieszka

AU - Mäemets, Helle

AU - Phillips, Geoff

AU - Søndergaard, Martin

AU - J. Willby, Nigel

AU - van den Berg, Marcel S.

PY - 2018/11

Y1 - 2018/11

N2 - The European Water Framework Directive has been adopted by Member States to assess and manage the ecological integrity of surface waters. Specific challenges include harmonizing diverse assessment systems across Europe, linking ecological assessment to restoration measures and reaching a common view on 'good' ecological status. In this study, nine national macrophyte-based approaches for assessing ecological status were compared and harmonized, using a large dataset of 539 European lakes. A macrophyte common metric, representing the average standardized view of each lake by all countries, was used to compare national methods. This was also shown to reflect the total phosphorus (r 2 = 0.32), total nitrogen (r 2 = 0.22) as well as chlorophyll- a (r 2 = 0.35-0.38) gradients, providing a link between ecological data, stressors and management decisions. Despite differing assessment approaches and initial differences in classification, a consensus was reached on how type-specific macrophyte assemblages change across the ecological status gradient and where ecological status boundaries should lie. A marked decline in submerged vegetation, especially Charophyta (characterizing 'good' status), and an increase in abundance of free-floating plants (characterizing 'less than good' status) were the most significant changes along the ecological status gradient. Macrophyte communities of 'good' status lakes were diverse with many charophytes and several Potamogeton species. A large number of taxa occurred across the entire gradient, but only a minority dominated at 'less than good' status, including filamentous algae, lemnids, nymphaeids, and several elodeids (e.g., Zannichellia palustris and Elodea nuttallii). Our findings establish a 'guiding image' of the macrophyte community at 'good' ecological status in hard-water lakes of the Central-Baltic region of Europe.

AB - The European Water Framework Directive has been adopted by Member States to assess and manage the ecological integrity of surface waters. Specific challenges include harmonizing diverse assessment systems across Europe, linking ecological assessment to restoration measures and reaching a common view on 'good' ecological status. In this study, nine national macrophyte-based approaches for assessing ecological status were compared and harmonized, using a large dataset of 539 European lakes. A macrophyte common metric, representing the average standardized view of each lake by all countries, was used to compare national methods. This was also shown to reflect the total phosphorus (r 2 = 0.32), total nitrogen (r 2 = 0.22) as well as chlorophyll- a (r 2 = 0.35-0.38) gradients, providing a link between ecological data, stressors and management decisions. Despite differing assessment approaches and initial differences in classification, a consensus was reached on how type-specific macrophyte assemblages change across the ecological status gradient and where ecological status boundaries should lie. A marked decline in submerged vegetation, especially Charophyta (characterizing 'good' status), and an increase in abundance of free-floating plants (characterizing 'less than good' status) were the most significant changes along the ecological status gradient. Macrophyte communities of 'good' status lakes were diverse with many charophytes and several Potamogeton species. A large number of taxa occurred across the entire gradient, but only a minority dominated at 'less than good' status, including filamentous algae, lemnids, nymphaeids, and several elodeids (e.g., Zannichellia palustris and Elodea nuttallii). Our findings establish a 'guiding image' of the macrophyte community at 'good' ecological status in hard-water lakes of the Central-Baltic region of Europe.

UR - https://www.sciencedirect.com/science/article/pii/S1470160X1830503X

U2 - 10.1016/j.ecolind.2018.06.056

DO - 10.1016/j.ecolind.2018.06.056

M3 - A1: Web of Science-article

C2 - 30393465

VL - 94

SP - 185

EP - 197

JO - Ecological Indicators

JF - Ecological Indicators

SN - 1470-160X

ER -

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