Directional trends in species composition over time can lead to
a widespread overemphasis of year-to-year asynchrony

J 2020

Directional trends in species composition over time can lead to a widespread overemphasis of year-to-year asynchrony

VALENCIA, Enrique, Francesco DE BELLO, Jan LEPŠ, Thomas GALLAND, Anna E-VOJTKÓ et. al.

Basic information

Original name

Directional trends in species composition over time can lead to a widespread overemphasis of year-to-year asynchrony

Authors

VALENCIA, Enrique (724 Spain, guarantor), Francesco DE BELLO, Jan LEPŠ (203 Czech Republic), Thomas GALLAND, Anna E-VOJTKÓ, Luisa CONTI, Jiří DANIHELKA (203 Czech Republic, belonging to the institution), Jürgen DENGLER (276 Germany), David J. ELDRIDGE, Marc ESTIARTE, Ricardo GARCIA-GONZALEZ, Eric GARNIER, Daniel GOMEZ, Susan HARRISON, Tomáš HERBEN (203 Czech Republic), Ricardo IBÁÑEZ, Anke JENTSCH, Norbert JUERGENS, Miklós KERTÉSZ, Katja KLUMPP, Frédérique LOUAULT, Rob H. MARRS, Gábor ÓNODI, Robin J. PAKEMAN, Meelis PÄRTEL, Begoña PECO, Josep PENUELAS, Marta RUEDA, Wolfgang SCHMIDT, Ute SCHMIEDEL, Martin SCHUETZ, Hana SKÁLOVÁ, Petr ŠMILAUER (203 Czech Republic), Marie ŠMILAUEROVÁ, Christian SMIT, Ming-Hua SONG, Martin STOCK, James VAL, Vigdis VANDVIK, Karsten WESCHE, Ben A. WOODCOCK, Truman P. YOUNG, Fei-Hai YU, Martin ZOBEL and Lars GÖTZENBERGER (276 Germany)

Edition

Journal of Vegetation Science, Hoboken, Wiley, 2020, 1100-9233

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10618 Ecology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.685

RIV identification code

RIV/00216224:14310/20:00116729

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1111/jvs.12916

UT WoS

000553661300001

Keywords in English

asynchrony; biodiversity; stability; synchrony; temporal dynamics; year-to-year fluctuation

Abstract

V originále

Questions: Compensatory dynamics are described as one of the main mechanisms that increase community stability, e.g., where decreases of some species on a year-to-year basis are offset by an increase in others. Deviations from perfect synchrony between species (asynchrony) have therefore been advocated as an important mechanism underlying biodiversity effects on stability. However, it is unclear to what extent existing measures of synchrony actually capture the signal of year-to-year species fluctuations in the presence of long-term directional trends in both species abundance and composition (species directional trends hereafter). Such directional trends may lead to a misinterpretation of indices commonly used to reflect year-to-year synchrony. An approach based on three-term local quadrat variance (T3) which assesses population variability in a three-year moving window, was used to overcome species directional trend effects. This "detrending" approach was applied to common indices of synchrony across a worldwide collection of 77 temporal plant community datasets comprising almost 7,800 individual plots sampled for at least six years. Plots included were either maintained under constant "control" conditions over time or were subjected to different management or disturbance treatments. Accounting for directional trends increased the detection of year-to-year synchronous patterns in all synchrony indices considered. Specifically, synchrony values increased significantly in similar to 40% of the datasets with theT3 detrending approach while in similar to 10% synchrony decreased. For the 38 studies with both control and manipulated conditions, the increase in synchrony values was stronger for longer time series, particularly following experimental manipulation. Species' long-term directional trends can affect synchrony and stability measures potentially masking the ecological mechanism causing year-to-year fluctuations. As such, previous studies on community stability might have overemphasised the role of compensatory dynamics in real-world ecosystems, and particularly in manipulative conditions, when not considering the possible overriding effects of long-term directional trends.

Files attached

Valencia_et_al_2020_Directional_trends_jvs.12916-1.pdf

Request the author's version of the file

Citovat

VALENCIA, Enrique, Francesco DE BELLO, Jan LEPŠ, Thomas GALLAND, Anna E-VOJTKÓ, Luisa CONTI, Jiří DANIHELKA, Jürgen DENGLER, David J. ELDRIDGE, Marc ESTIARTE, Ricardo GARCIA-GONZALEZ, Eric GARNIER, Daniel GOMEZ, Susan HARRISON, Tomáš HERBEN, Ricardo IBÁÑEZ, Anke JENTSCH, Norbert JUERGENS, Miklós KERTÉSZ, Katja KLUMPP, Frédérique LOUAULT, Rob H. MARRS, Gábor ÓNODI, Robin J. PAKEMAN, Meelis PÄRTEL, Begoña PECO, Josep PENUELAS, Marta RUEDA, Wolfgang SCHMIDT, Ute SCHMIEDEL, Martin SCHUETZ, Hana SKÁLOVÁ, Petr ŠMILAUER, Marie ŠMILAUEROVÁ, Christian SMIT, Ming-Hua SONG, Martin STOCK, James VAL, Vigdis VANDVIK, Karsten WESCHE, Ben A. WOODCOCK, Truman P. YOUNG, Fei-Hai YU, Martin ZOBEL and Lars GÖTZENBERGER. Directional trends in species composition over time can lead to a widespread overemphasis of year-to-year asynchrony. Journal of Vegetation Science. Hoboken: Wiley, 2020, vol. 31, No 5, p. 792-802. ISSN 1100-9233. Available from: https://dx.doi.org/10.1111/jvs.12916.

@article{1686861,
   author = {Valencia, Enrique and de Bello, Francesco and Lepš, Jan and Galland, Thomas and EandVojtkó, Anna and Conti, Luisa and Danihelka, Jiří and Dengler, Jürgen and Eldridge, David J. and Estiarte, Marc and GarciaandGonzalez, Ricardo and Garnier, Eric and Gomez, Daniel and Harrison, Susan and Herben, Tomáš and Ibáñez, Ricardo and Jentsch, Anke and Juergens, Norbert and Kertész, Miklós and Klumpp, Katja and Louault, Frédérique and Marrs, Rob H. and Ónodi, Gábor and Pakeman, Robin J. and Pärtel, Meelis and Peco, Begoña and Penuelas, Josep and Rueda, Marta and Schmidt, Wolfgang and Schmiedel, Ute and Schuetz, Martin and Skálová, Hana and Šmilauer, Petr and Šmilauerová, Marie and Smit, Christian and Song, MingandHua and Stock, Martin and Val, James and Vandvik, Vigdis and Wesche, Karsten and Woodcock, Ben A. and Young, Truman P. and Yu, FeiandHai and Zobel, Martin and Götzenberger, Lars},
   article_location = {Hoboken},
   article_number = {5},
   doi = {http://dx.doi.org/10.1111/jvs.12916},
   keywords = {asynchrony; biodiversity; stability; synchrony; temporal dynamics; year-to-year fluctuation},
   language = {eng},
   issn = {1100-9233},
   journal = {Journal of Vegetation Science},
   title = {Directional trends in species composition over time can lead to a widespread overemphasis of year-to-year asynchrony},
   url = {https://onlinelibrary.wiley.com/doi/10.1111/jvs.12916},
   volume = {31},
   year = {2020}
}

TY  - JOUR
ID  - 1686861
AU  - Valencia, Enrique - de Bello, Francesco - Lepš, Jan - Galland, Thomas - E-Vojtkó, Anna - Conti, Luisa - Danihelka, Jiří - Dengler, Jürgen - Eldridge, David J. - Estiarte, Marc - Garcia-Gonzalez, Ricardo - Garnier, Eric - Gomez, Daniel - Harrison, Susan - Herben, Tomáš - Ibáñez, Ricardo - Jentsch, Anke - Juergens, Norbert - Kertész, Miklós - Klumpp, Katja - Louault, Frédérique - Marrs, Rob H. - Ónodi, Gábor - Pakeman, Robin J. - Pärtel, Meelis - Peco, Begoña - Penuelas, Josep - Rueda, Marta - Schmidt, Wolfgang - Schmiedel, Ute - Schuetz, Martin - Skálová, Hana - Šmilauer, Petr - Šmilauerová, Marie - Smit, Christian - Song, Ming-Hua - Stock, Martin - Val, James - Vandvik, Vigdis - Wesche, Karsten - Woodcock, Ben A. - Young, Truman P. - Yu, Fei-Hai - Zobel, Martin - Götzenberger, Lars
PY  - 2020
TI  - Directional trends in species composition over time can lead to a widespread overemphasis of year-to-year asynchrony
JF  - Journal of Vegetation Science
VL  - 31
IS  - 5
SP  - 792-802
EP  - 792-802
PB  - Wiley
SN  - 11009233
KW  - asynchrony
KW  - biodiversity
KW  - stability
KW  - synchrony
KW  - temporal dynamics
KW  - year-to-year fluctuation
UR  - https://onlinelibrary.wiley.com/doi/10.1111/jvs.12916
L2  - https://onlinelibrary.wiley.com/doi/10.1111/jvs.12916
N2  - Questions: Compensatory dynamics are described as one of the main mechanisms that increase community stability, e.g., where decreases of some species on a year-to-year basis are offset by an increase in others. Deviations from perfect synchrony between species (asynchrony) have therefore been advocated as an important mechanism underlying biodiversity effects on stability. However, it is unclear to what extent existing measures of synchrony actually capture the signal of year-to-year species fluctuations in the presence of long-term directional trends in both species abundance and composition (species directional trends hereafter). Such directional trends may lead to a misinterpretation of indices commonly used to reflect year-to-year synchrony. An approach based on three-term local quadrat variance (T3) which assesses population variability in a three-year moving window, was used to overcome species directional trend effects. This "detrending" approach was applied to common indices of synchrony across a worldwide collection of 77 temporal plant community datasets comprising almost 7,800 individual plots sampled for at least six years. Plots included were either maintained under constant "control" conditions over time or were subjected to different management or disturbance treatments. Accounting for directional trends increased the detection of year-to-year synchronous patterns in all synchrony indices considered. Specifically, synchrony values increased significantly in similar to 40% of the datasets with theT3 detrending approach while in similar to 10% synchrony decreased. For the 38 studies with both control and manipulated conditions, the increase in synchrony values was stronger for longer time series, particularly following experimental manipulation. Species' long-term directional trends can affect synchrony and stability measures potentially masking the ecological mechanism causing year-to-year fluctuations. As such, previous studies on community stability might have overemphasised the role of compensatory dynamics in real-world ecosystems, and particularly in manipulative conditions, when not considering the possible overriding effects of long-term directional trends.
ER  -

VALENCIA, Enrique, Francesco DE BELLO, Jan LEPŠ, Thomas GALLAND, Anna E-VOJTKÓ, Luisa CONTI, Jiří DANIHELKA, Jürgen DENGLER, David J. ELDRIDGE, Marc ESTIARTE, Ricardo GARCIA-GONZALEZ, Eric GARNIER, Daniel GOMEZ, Susan HARRISON, Tomáš HERBEN, Ricardo IBÁÑEZ, Anke JENTSCH, Norbert JUERGENS, Miklós KERTÉSZ, Katja KLUMPP, Frédérique LOUAULT, Rob H. MARRS, Gábor ÓNODI, Robin J. PAKEMAN, Meelis PÄRTEL, Begoña PECO, Josep PENUELAS, Marta RUEDA, Wolfgang SCHMIDT, Ute SCHMIEDEL, Martin SCHUETZ, Hana SKÁLOVÁ, Petr ŠMILAUER, Marie ŠMILAUEROVÁ, Christian SMIT, Ming-Hua SONG, Martin STOCK, James VAL, Vigdis VANDVIK, Karsten WESCHE, Ben A. WOODCOCK, Truman P. YOUNG, Fei-Hai YU, Martin ZOBEL and Lars GÖTZENBERGER. Directional trends in species composition over time can lead to a widespread overemphasis of year-to-year asynchrony. \textit{Journal of Vegetation Science}. Hoboken: Wiley, 2020, vol.~31, No~5, p.~792-802. ISSN~1100-9233. Available from: https://dx.doi.org/10.1111/jvs.12916.

Detailed Information on Publication Record