Shifts of community composition and population density substantially affect ecosystem function despite invariant richness

Jurg W. Spaak, Jan M. Baert, Donald J. Baird, Nico Eisenhauer, Lorraine Maltby, Francesco Pomati, Viktoriia Radchuk, Jason R. Rohr, Paul J. Van den Brink, Frederik De Laender

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

There has been considerable focus on the impacts of environmental change on ecosystem function arising from changes in species richness. However, environmental change may affect ecosystem function without affecting richness, most notably by affecting population densities and community composition. Using a theoretical model, we find that, despite invariant richness, (1) small environmental effects may already lead to a collapse of function; (2) competitive strength may be a less important determinant of ecosystem function change than the selectivity of the environmental change driver and (3) effects on ecosystem function increase when effects on composition are larger. We also present a complementary statistical analysis of 13 data sets of phytoplankton and periphyton communities exposed to chemical stressors and show that effects on primary production under invariant richness ranged from −75% to +10%. We conclude that environmental protection goals relying on measures of richness could underestimate ecological impacts of environmental change.

langue originaleAnglais
Pages (de - à)1315-1324
Nombre de pages10
journalEcology Letters
Volume20
Numéro de publication10
Les DOIs
étatPublié - 1 oct. 2017

Empreinte digitale

ecosystem function
community composition
environmental change
population density
ecosystems
environmental impact
periphyton
environmental protection
ecological impact
environmental effect
primary production
primary productivity
statistical analysis
species richness
phytoplankton
species diversity
effect

Citer ceci

Spaak, Jurg W. ; Baert, Jan M. ; Baird, Donald J. ; Eisenhauer, Nico ; Maltby, Lorraine ; Pomati, Francesco ; Radchuk, Viktoriia ; Rohr, Jason R. ; Van den Brink, Paul J. ; De Laender, Frederik. / Shifts of community composition and population density substantially affect ecosystem function despite invariant richness. Dans: Ecology Letters. 2017 ; Vol 20, Numéro 10. p. 1315-1324.
@article{9a1d5b5fe58b4c52a0d24cb6a913b7b4,
title = "Shifts of community composition and population density substantially affect ecosystem function despite invariant richness",
abstract = "There has been considerable focus on the impacts of environmental change on ecosystem function arising from changes in species richness. However, environmental change may affect ecosystem function without affecting richness, most notably by affecting population densities and community composition. Using a theoretical model, we find that, despite invariant richness, (1) small environmental effects may already lead to a collapse of function; (2) competitive strength may be a less important determinant of ecosystem function change than the selectivity of the environmental change driver and (3) effects on ecosystem function increase when effects on composition are larger. We also present a complementary statistical analysis of 13 data sets of phytoplankton and periphyton communities exposed to chemical stressors and show that effects on primary production under invariant richness ranged from −75{\%} to +10{\%}. We conclude that environmental protection goals relying on measures of richness could underestimate ecological impacts of environmental change.",
keywords = "Algae, biodiversity, coexistence, community ecology, modelling, primary production",
author = "Spaak, {Jurg W.} and Baert, {Jan M.} and Baird, {Donald J.} and Nico Eisenhauer and Lorraine Maltby and Francesco Pomati and Viktoriia Radchuk and Rohr, {Jason R.} and {Van den Brink}, {Paul J.} and {De Laender}, Frederik",
year = "2017",
month = "10",
day = "1",
doi = "10.1111/ele.12828",
language = "English",
volume = "20",
pages = "1315--1324",
journal = "Ecology Letters",
issn = "1461-023X",
publisher = "Wiley-Blackwell",
number = "10",

}

Spaak, JW, Baert, JM, Baird, DJ, Eisenhauer, N, Maltby, L, Pomati, F, Radchuk, V, Rohr, JR, Van den Brink, PJ & De Laender, F 2017, 'Shifts of community composition and population density substantially affect ecosystem function despite invariant richness', Ecology Letters, VOL. 20, Numéro 10, p. 1315-1324. https://doi.org/10.1111/ele.12828

Shifts of community composition and population density substantially affect ecosystem function despite invariant richness. / Spaak, Jurg W.; Baert, Jan M.; Baird, Donald J.; Eisenhauer, Nico; Maltby, Lorraine; Pomati, Francesco; Radchuk, Viktoriia; Rohr, Jason R.; Van den Brink, Paul J.; De Laender, Frederik.

Dans: Ecology Letters, Vol 20, Numéro 10, 01.10.2017, p. 1315-1324.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - Shifts of community composition and population density substantially affect ecosystem function despite invariant richness

AU - Spaak, Jurg W.

AU - Baert, Jan M.

AU - Baird, Donald J.

AU - Eisenhauer, Nico

AU - Maltby, Lorraine

AU - Pomati, Francesco

AU - Radchuk, Viktoriia

AU - Rohr, Jason R.

AU - Van den Brink, Paul J.

AU - De Laender, Frederik

PY - 2017/10/1

Y1 - 2017/10/1

N2 - There has been considerable focus on the impacts of environmental change on ecosystem function arising from changes in species richness. However, environmental change may affect ecosystem function without affecting richness, most notably by affecting population densities and community composition. Using a theoretical model, we find that, despite invariant richness, (1) small environmental effects may already lead to a collapse of function; (2) competitive strength may be a less important determinant of ecosystem function change than the selectivity of the environmental change driver and (3) effects on ecosystem function increase when effects on composition are larger. We also present a complementary statistical analysis of 13 data sets of phytoplankton and periphyton communities exposed to chemical stressors and show that effects on primary production under invariant richness ranged from −75% to +10%. We conclude that environmental protection goals relying on measures of richness could underestimate ecological impacts of environmental change.

AB - There has been considerable focus on the impacts of environmental change on ecosystem function arising from changes in species richness. However, environmental change may affect ecosystem function without affecting richness, most notably by affecting population densities and community composition. Using a theoretical model, we find that, despite invariant richness, (1) small environmental effects may already lead to a collapse of function; (2) competitive strength may be a less important determinant of ecosystem function change than the selectivity of the environmental change driver and (3) effects on ecosystem function increase when effects on composition are larger. We also present a complementary statistical analysis of 13 data sets of phytoplankton and periphyton communities exposed to chemical stressors and show that effects on primary production under invariant richness ranged from −75% to +10%. We conclude that environmental protection goals relying on measures of richness could underestimate ecological impacts of environmental change.

KW - Algae

KW - biodiversity

KW - coexistence

KW - community ecology

KW - modelling

KW - primary production

UR - http://www.scopus.com/inward/record.url?scp=85029577319&partnerID=8YFLogxK

U2 - 10.1111/ele.12828

DO - 10.1111/ele.12828

M3 - Article

AN - SCOPUS:85029577319

VL - 20

SP - 1315

EP - 1324

JO - Ecology Letters

JF - Ecology Letters

SN - 1461-023X

IS - 10

ER -