Differential responses of community‐level functional traits to mid‐ and late‐season experimental drought in a temperate grassland
Extreme precipitation events are becoming more intense and frequent due to climate change. This climatic shift is impacting the structure and dynamics of natural communities and the key ecosystem services they provide. Changes in species abundance under these conditions are thought to be mediated by...
Gespeichert in:
Veröffentlicht in: | The Journal of ecology 2024-10, Vol.112 (10), p.2292-2306 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | 2306 |
---|---|
container_issue | 10 |
container_start_page | 2292 |
container_title | The Journal of ecology |
container_volume | 112 |
creator | Fenollosa, E. Fernandes, P. Hector, A. King, H. Lawson, C. S. Jackson, J. Salguero‐Gómez, R. |
description | Extreme precipitation events are becoming more intense and frequent due to climate change. This climatic shift is impacting the structure and dynamics of natural communities and the key ecosystem services they provide. Changes in species abundance under these conditions are thought to be mediated by functional traits, morpho‐physiological characteristics of an organism that impact its fitness. Future environmental conditions may, therefore, favour different traits to those in present‐day communities.
After 6 years of manipulated precipitation levels, including drought (−50% of ambient precipitation), irrigation (+50% of ambient precipitation), and control (ambient precipitation), we measured five key functional traits (plant height, leaf dry matter content [LDMC], leaf thickness, specific leaf area [SLA], and leaf phosphorus concentration) in 586 individual vascular plants to study the effects of precipitation changes on community‐weighted functional traits. Additionally, we tested whether the precipitation change effects on the traits depend on the time of the growing season.
As expected, reduced precipitation impacted community composition only for the late‐season timing, after the seasonal field mowing, but led to a significant change in all community‐level plant traits between season timings. Under drought, communities shifted towards shorter individuals with thicker but small leaves and lower phosphorous content. Overall, a combination of community reassembly and intraspecific variation contributed to community‐weighted differences between control and drought plots for plant height, SLA, and LDMC traits. Species turnover was the main driver of community‐weighted means (CWMs) shifts in all traits in the late‐season but SLA. Whereas all traits showed variations at the community level with drought, SLA and LDMC were the most responsive traits at the species level. Nevertheless, our results suggest underestimation of intraspecific variation due to sensitive species lower abundance under stress. No differences in CWMs of functional traits were observed between control and irrigated plots.
Synthesis: Our findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.
Resumen
Los eventos de precipitación extrema están volviéndose más inten |
doi_str_mv | 10.1111/1365-2745.14395 |
format | Article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_3111729508</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3153850564</sourcerecordid><originalsourceid>FETCH-LOGICAL-c2735-5b7a09e901de975b5c22582df81b84aeeca8e1f89487976cab918a744f1beb393</originalsourceid><addsrcrecordid>eNqFkT1PxDAMhiMEEsfBzBqJhaWQtM0lGdHxrZNYYI7S1oGgtjmSFLiNjZXfyC8h5RADC15s2c9r2XoR2qfkiKY4psWMZTkv2REtC8k20OS3s4kmhOR5RkrOt9FOCI-EkBlnZILeT60x4KGPVrfYQ1i6PkDAzuDadd3Q27j6fPto4RlabIa-jtb1iYxe2xhwdLizTQKw7hvc6gipDqCD6zG8LsHbLq1OfOPdcP8Qse2xxhG6NEowvvc6hDZpd9GW0W2AvZ88RXfnZ7fzy2xxc3E1P1lkdc4LlrGKayJBEtqA5KxidZ4zkTdG0EqUGqDWAqgRshRc8lmtK0mF5mVpaAVVIYspOlzvXXr3NECIqrOhhjbdAG4IqqCsEIywWZnQgz_ooxt8en6kKOW5ZEQk6nhN1d6F4MGoZXpa-5WiRI3GqNEGNdqgvo1JCrZWvNgWVv_h6vpsvtZ9AfRblPI</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3111729508</pqid></control><display><type>article</type><title>Differential responses of community‐level functional traits to mid‐ and late‐season experimental drought in a temperate grassland</title><source>Wiley Online Library Journals Frontfile Complete</source><creator>Fenollosa, E. ; Fernandes, P. ; Hector, A. ; King, H. ; Lawson, C. S. ; Jackson, J. ; Salguero‐Gómez, R.</creator><creatorcontrib>Fenollosa, E. ; Fernandes, P. ; Hector, A. ; King, H. ; Lawson, C. S. ; Jackson, J. ; Salguero‐Gómez, R.</creatorcontrib><description>Extreme precipitation events are becoming more intense and frequent due to climate change. This climatic shift is impacting the structure and dynamics of natural communities and the key ecosystem services they provide. Changes in species abundance under these conditions are thought to be mediated by functional traits, morpho‐physiological characteristics of an organism that impact its fitness. Future environmental conditions may, therefore, favour different traits to those in present‐day communities.
After 6 years of manipulated precipitation levels, including drought (−50% of ambient precipitation), irrigation (+50% of ambient precipitation), and control (ambient precipitation), we measured five key functional traits (plant height, leaf dry matter content [LDMC], leaf thickness, specific leaf area [SLA], and leaf phosphorus concentration) in 586 individual vascular plants to study the effects of precipitation changes on community‐weighted functional traits. Additionally, we tested whether the precipitation change effects on the traits depend on the time of the growing season.
As expected, reduced precipitation impacted community composition only for the late‐season timing, after the seasonal field mowing, but led to a significant change in all community‐level plant traits between season timings. Under drought, communities shifted towards shorter individuals with thicker but small leaves and lower phosphorous content. Overall, a combination of community reassembly and intraspecific variation contributed to community‐weighted differences between control and drought plots for plant height, SLA, and LDMC traits. Species turnover was the main driver of community‐weighted means (CWMs) shifts in all traits in the late‐season but SLA. Whereas all traits showed variations at the community level with drought, SLA and LDMC were the most responsive traits at the species level. Nevertheless, our results suggest underestimation of intraspecific variation due to sensitive species lower abundance under stress. No differences in CWMs of functional traits were observed between control and irrigated plots.
Synthesis: Our findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.
Resumen
Los eventos de precipitación extrema están volviéndose más intensos y frecuentes debido al cambio climático, lo que está afectando la estructura y dinámica de las comunidades. Los cambios en la abundancia de especies bajo estas condiciones son mediados por rasgos funcionales, características morfo‐fisiológicas de los organismos que afectan su eficacia biológica. Por eso, las condiciones ambientales futuras podrían favorecer rasgos funcionales diferentes a los de las comunidades actuales.
Después de seis años manipulando los niveles de precipitación con: sequia (−50% precipitación ambiental), irrigación (+50% precipitación ambiental) y control (precipitación ambiental), medimos cinco rasgos funcionales clave (altura de la planta, contenido seco foliar – LDMC –, grueso foliar, peso específico foliar – SLA – y concentración foliar de fósforo) en 586 plantas vasculares para estudiar el efecto de la precipitación en las medias ponderadas en la comunidad de rasgos funcionales. Además, testeamos si el cambio en los rasgos funcionales con la precipitación depende del momento de la temporada de crecimiento.
La reducción de la precipitación cambió la composición de la comunidad en la etapa tardía de la temporada, después del corte estacional, pero provocó cambios en los rasgos funcionales a nivel de comunidad en los dos momentos de la temporada. Con la sequía las comunidades de pastizal mostraron individuos más bajos, con hojas gruesas pero pequeñas y con menos fósforo. Una combinación de cambios en la comunidad y variabilidad intraespecífica contribuyó a las diferencias entre medias ponderadas por la comunidad entre control y sequía en altura de la planta, SLA y LDMC. El recambio de especies fue el principal responsable de los cambios al final de la temporada en todos los rasgos excepto SLA. Mientras que observamos cambios a nivel de comunidad con la sequía en todos los rasgos medidos, SLA y LDMC fueron los más sensibles a nivel de especie. No obstante, nuestros resultados sugieren una subestimación de la variabilidad intraespecífica debido a la menor abundancia de las especies más sensibles bajo estrés. No se observaron diferencias entre los tratamientos de control e irrigación.
Síntesis: Nuestros resultados sugieren que la composición de rasgos funcionales de las comunidades puede cambiar bajo la sequía. La variación temporal debe ser considerada para predecir el funcionamiento de los ecosistemas en el contexto de cambio climático.
These findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.</description><identifier>ISSN: 0022-0477</identifier><identifier>EISSN: 1365-2745</identifier><identifier>DOI: 10.1111/1365-2745.14395</identifier><language>eng</language><publisher>Oxford: Blackwell Publishing Ltd</publisher><subject>Abundance ; climate ; Climate change ; Community composition ; community structure ; community‐weighted means ; Composition ; Drought ; Dry matter ; Dry matter content ; Ecological function ; Ecosystem services ; ecosystems ; Environmental conditions ; Extreme weather ; functional traits ; Grasslands ; Growing season ; intraspecific variability ; intraspecific variation ; irrigation ; Leaf area ; leaf dry matter content ; leaf thickness ; Leaves ; Mowing ; Phosphorus ; phosphorus content ; plant height ; Plant layout ; Plants ; Plants (botany) ; Precipitation ; Seasons ; species ; species abundance ; specific leaf area ; temporal variation ; Temporal variations</subject><ispartof>The Journal of ecology, 2024-10, Vol.112 (10), p.2292-2306</ispartof><rights>2024 The Author(s). published by John Wiley & Sons Ltd on behalf of British Ecological Society.</rights><rights>2024. This article is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c2735-5b7a09e901de975b5c22582df81b84aeeca8e1f89487976cab918a744f1beb393</cites><orcidid>0000-0002-6085-4433 ; 0000-0002-1309-7716 ; 0000-0002-4563-2840 ; 0000-0002-6189-2124</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2F1365-2745.14395$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2F1365-2745.14395$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>314,777,781,1412,27905,27906,45555,45556</link.rule.ids></links><search><creatorcontrib>Fenollosa, E.</creatorcontrib><creatorcontrib>Fernandes, P.</creatorcontrib><creatorcontrib>Hector, A.</creatorcontrib><creatorcontrib>King, H.</creatorcontrib><creatorcontrib>Lawson, C. S.</creatorcontrib><creatorcontrib>Jackson, J.</creatorcontrib><creatorcontrib>Salguero‐Gómez, R.</creatorcontrib><title>Differential responses of community‐level functional traits to mid‐ and late‐season experimental drought in a temperate grassland</title><title>The Journal of ecology</title><description>Extreme precipitation events are becoming more intense and frequent due to climate change. This climatic shift is impacting the structure and dynamics of natural communities and the key ecosystem services they provide. Changes in species abundance under these conditions are thought to be mediated by functional traits, morpho‐physiological characteristics of an organism that impact its fitness. Future environmental conditions may, therefore, favour different traits to those in present‐day communities.
After 6 years of manipulated precipitation levels, including drought (−50% of ambient precipitation), irrigation (+50% of ambient precipitation), and control (ambient precipitation), we measured five key functional traits (plant height, leaf dry matter content [LDMC], leaf thickness, specific leaf area [SLA], and leaf phosphorus concentration) in 586 individual vascular plants to study the effects of precipitation changes on community‐weighted functional traits. Additionally, we tested whether the precipitation change effects on the traits depend on the time of the growing season.
As expected, reduced precipitation impacted community composition only for the late‐season timing, after the seasonal field mowing, but led to a significant change in all community‐level plant traits between season timings. Under drought, communities shifted towards shorter individuals with thicker but small leaves and lower phosphorous content. Overall, a combination of community reassembly and intraspecific variation contributed to community‐weighted differences between control and drought plots for plant height, SLA, and LDMC traits. Species turnover was the main driver of community‐weighted means (CWMs) shifts in all traits in the late‐season but SLA. Whereas all traits showed variations at the community level with drought, SLA and LDMC were the most responsive traits at the species level. Nevertheless, our results suggest underestimation of intraspecific variation due to sensitive species lower abundance under stress. No differences in CWMs of functional traits were observed between control and irrigated plots.
Synthesis: Our findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.
Resumen
Los eventos de precipitación extrema están volviéndose más intensos y frecuentes debido al cambio climático, lo que está afectando la estructura y dinámica de las comunidades. Los cambios en la abundancia de especies bajo estas condiciones son mediados por rasgos funcionales, características morfo‐fisiológicas de los organismos que afectan su eficacia biológica. Por eso, las condiciones ambientales futuras podrían favorecer rasgos funcionales diferentes a los de las comunidades actuales.
Después de seis años manipulando los niveles de precipitación con: sequia (−50% precipitación ambiental), irrigación (+50% precipitación ambiental) y control (precipitación ambiental), medimos cinco rasgos funcionales clave (altura de la planta, contenido seco foliar – LDMC –, grueso foliar, peso específico foliar – SLA – y concentración foliar de fósforo) en 586 plantas vasculares para estudiar el efecto de la precipitación en las medias ponderadas en la comunidad de rasgos funcionales. Además, testeamos si el cambio en los rasgos funcionales con la precipitación depende del momento de la temporada de crecimiento.
La reducción de la precipitación cambió la composición de la comunidad en la etapa tardía de la temporada, después del corte estacional, pero provocó cambios en los rasgos funcionales a nivel de comunidad en los dos momentos de la temporada. Con la sequía las comunidades de pastizal mostraron individuos más bajos, con hojas gruesas pero pequeñas y con menos fósforo. Una combinación de cambios en la comunidad y variabilidad intraespecífica contribuyó a las diferencias entre medias ponderadas por la comunidad entre control y sequía en altura de la planta, SLA y LDMC. El recambio de especies fue el principal responsable de los cambios al final de la temporada en todos los rasgos excepto SLA. Mientras que observamos cambios a nivel de comunidad con la sequía en todos los rasgos medidos, SLA y LDMC fueron los más sensibles a nivel de especie. No obstante, nuestros resultados sugieren una subestimación de la variabilidad intraespecífica debido a la menor abundancia de las especies más sensibles bajo estrés. No se observaron diferencias entre los tratamientos de control e irrigación.
Síntesis: Nuestros resultados sugieren que la composición de rasgos funcionales de las comunidades puede cambiar bajo la sequía. La variación temporal debe ser considerada para predecir el funcionamiento de los ecosistemas en el contexto de cambio climático.
These findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.</description><subject>Abundance</subject><subject>climate</subject><subject>Climate change</subject><subject>Community composition</subject><subject>community structure</subject><subject>community‐weighted means</subject><subject>Composition</subject><subject>Drought</subject><subject>Dry matter</subject><subject>Dry matter content</subject><subject>Ecological function</subject><subject>Ecosystem services</subject><subject>ecosystems</subject><subject>Environmental conditions</subject><subject>Extreme weather</subject><subject>functional traits</subject><subject>Grasslands</subject><subject>Growing season</subject><subject>intraspecific variability</subject><subject>intraspecific variation</subject><subject>irrigation</subject><subject>Leaf area</subject><subject>leaf dry matter content</subject><subject>leaf thickness</subject><subject>Leaves</subject><subject>Mowing</subject><subject>Phosphorus</subject><subject>phosphorus content</subject><subject>plant height</subject><subject>Plant layout</subject><subject>Plants</subject><subject>Plants (botany)</subject><subject>Precipitation</subject><subject>Seasons</subject><subject>species</subject><subject>species abundance</subject><subject>specific leaf area</subject><subject>temporal variation</subject><subject>Temporal variations</subject><issn>0022-0477</issn><issn>1365-2745</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><sourceid>WIN</sourceid><recordid>eNqFkT1PxDAMhiMEEsfBzBqJhaWQtM0lGdHxrZNYYI7S1oGgtjmSFLiNjZXfyC8h5RADC15s2c9r2XoR2qfkiKY4psWMZTkv2REtC8k20OS3s4kmhOR5RkrOt9FOCI-EkBlnZILeT60x4KGPVrfYQ1i6PkDAzuDadd3Q27j6fPto4RlabIa-jtb1iYxe2xhwdLizTQKw7hvc6gipDqCD6zG8LsHbLq1OfOPdcP8Qse2xxhG6NEowvvc6hDZpd9GW0W2AvZ88RXfnZ7fzy2xxc3E1P1lkdc4LlrGKayJBEtqA5KxidZ4zkTdG0EqUGqDWAqgRshRc8lmtK0mF5mVpaAVVIYspOlzvXXr3NECIqrOhhjbdAG4IqqCsEIywWZnQgz_ooxt8en6kKOW5ZEQk6nhN1d6F4MGoZXpa-5WiRI3GqNEGNdqgvo1JCrZWvNgWVv_h6vpsvtZ9AfRblPI</recordid><startdate>202410</startdate><enddate>202410</enddate><creator>Fenollosa, E.</creator><creator>Fernandes, P.</creator><creator>Hector, A.</creator><creator>King, H.</creator><creator>Lawson, C. S.</creator><creator>Jackson, J.</creator><creator>Salguero‐Gómez, R.</creator><general>Blackwell Publishing Ltd</general><scope>24P</scope><scope>WIN</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H95</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>SOI</scope><scope>7S9</scope><scope>L.6</scope><orcidid>https://orcid.org/0000-0002-6085-4433</orcidid><orcidid>https://orcid.org/0000-0002-1309-7716</orcidid><orcidid>https://orcid.org/0000-0002-4563-2840</orcidid><orcidid>https://orcid.org/0000-0002-6189-2124</orcidid></search><sort><creationdate>202410</creationdate><title>Differential responses of community‐level functional traits to mid‐ and late‐season experimental drought in a temperate grassland</title><author>Fenollosa, E. ; Fernandes, P. ; Hector, A. ; King, H. ; Lawson, C. S. ; Jackson, J. ; Salguero‐Gómez, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2735-5b7a09e901de975b5c22582df81b84aeeca8e1f89487976cab918a744f1beb393</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Abundance</topic><topic>climate</topic><topic>Climate change</topic><topic>Community composition</topic><topic>community structure</topic><topic>community‐weighted means</topic><topic>Composition</topic><topic>Drought</topic><topic>Dry matter</topic><topic>Dry matter content</topic><topic>Ecological function</topic><topic>Ecosystem services</topic><topic>ecosystems</topic><topic>Environmental conditions</topic><topic>Extreme weather</topic><topic>functional traits</topic><topic>Grasslands</topic><topic>Growing season</topic><topic>intraspecific variability</topic><topic>intraspecific variation</topic><topic>irrigation</topic><topic>Leaf area</topic><topic>leaf dry matter content</topic><topic>leaf thickness</topic><topic>Leaves</topic><topic>Mowing</topic><topic>Phosphorus</topic><topic>phosphorus content</topic><topic>plant height</topic><topic>Plant layout</topic><topic>Plants</topic><topic>Plants (botany)</topic><topic>Precipitation</topic><topic>Seasons</topic><topic>species</topic><topic>species abundance</topic><topic>specific leaf area</topic><topic>temporal variation</topic><topic>Temporal variations</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fenollosa, E.</creatorcontrib><creatorcontrib>Fernandes, P.</creatorcontrib><creatorcontrib>Hector, A.</creatorcontrib><creatorcontrib>King, H.</creatorcontrib><creatorcontrib>Lawson, C. S.</creatorcontrib><creatorcontrib>Jackson, J.</creatorcontrib><creatorcontrib>Salguero‐Gómez, R.</creatorcontrib><collection>Wiley Online Library Open Access</collection><collection>Wiley Free Content</collection><collection>CrossRef</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>Environment Abstracts</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><jtitle>The Journal of ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fenollosa, E.</au><au>Fernandes, P.</au><au>Hector, A.</au><au>King, H.</au><au>Lawson, C. S.</au><au>Jackson, J.</au><au>Salguero‐Gómez, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Differential responses of community‐level functional traits to mid‐ and late‐season experimental drought in a temperate grassland</atitle><jtitle>The Journal of ecology</jtitle><date>2024-10</date><risdate>2024</risdate><volume>112</volume><issue>10</issue><spage>2292</spage><epage>2306</epage><pages>2292-2306</pages><issn>0022-0477</issn><eissn>1365-2745</eissn><abstract>Extreme precipitation events are becoming more intense and frequent due to climate change. This climatic shift is impacting the structure and dynamics of natural communities and the key ecosystem services they provide. Changes in species abundance under these conditions are thought to be mediated by functional traits, morpho‐physiological characteristics of an organism that impact its fitness. Future environmental conditions may, therefore, favour different traits to those in present‐day communities.
After 6 years of manipulated precipitation levels, including drought (−50% of ambient precipitation), irrigation (+50% of ambient precipitation), and control (ambient precipitation), we measured five key functional traits (plant height, leaf dry matter content [LDMC], leaf thickness, specific leaf area [SLA], and leaf phosphorus concentration) in 586 individual vascular plants to study the effects of precipitation changes on community‐weighted functional traits. Additionally, we tested whether the precipitation change effects on the traits depend on the time of the growing season.
As expected, reduced precipitation impacted community composition only for the late‐season timing, after the seasonal field mowing, but led to a significant change in all community‐level plant traits between season timings. Under drought, communities shifted towards shorter individuals with thicker but small leaves and lower phosphorous content. Overall, a combination of community reassembly and intraspecific variation contributed to community‐weighted differences between control and drought plots for plant height, SLA, and LDMC traits. Species turnover was the main driver of community‐weighted means (CWMs) shifts in all traits in the late‐season but SLA. Whereas all traits showed variations at the community level with drought, SLA and LDMC were the most responsive traits at the species level. Nevertheless, our results suggest underestimation of intraspecific variation due to sensitive species lower abundance under stress. No differences in CWMs of functional traits were observed between control and irrigated plots.
Synthesis: Our findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.
Resumen
Los eventos de precipitación extrema están volviéndose más intensos y frecuentes debido al cambio climático, lo que está afectando la estructura y dinámica de las comunidades. Los cambios en la abundancia de especies bajo estas condiciones son mediados por rasgos funcionales, características morfo‐fisiológicas de los organismos que afectan su eficacia biológica. Por eso, las condiciones ambientales futuras podrían favorecer rasgos funcionales diferentes a los de las comunidades actuales.
Después de seis años manipulando los niveles de precipitación con: sequia (−50% precipitación ambiental), irrigación (+50% precipitación ambiental) y control (precipitación ambiental), medimos cinco rasgos funcionales clave (altura de la planta, contenido seco foliar – LDMC –, grueso foliar, peso específico foliar – SLA – y concentración foliar de fósforo) en 586 plantas vasculares para estudiar el efecto de la precipitación en las medias ponderadas en la comunidad de rasgos funcionales. Además, testeamos si el cambio en los rasgos funcionales con la precipitación depende del momento de la temporada de crecimiento.
La reducción de la precipitación cambió la composición de la comunidad en la etapa tardía de la temporada, después del corte estacional, pero provocó cambios en los rasgos funcionales a nivel de comunidad en los dos momentos de la temporada. Con la sequía las comunidades de pastizal mostraron individuos más bajos, con hojas gruesas pero pequeñas y con menos fósforo. Una combinación de cambios en la comunidad y variabilidad intraespecífica contribuyó a las diferencias entre medias ponderadas por la comunidad entre control y sequía en altura de la planta, SLA y LDMC. El recambio de especies fue el principal responsable de los cambios al final de la temporada en todos los rasgos excepto SLA. Mientras que observamos cambios a nivel de comunidad con la sequía en todos los rasgos medidos, SLA y LDMC fueron los más sensibles a nivel de especie. No obstante, nuestros resultados sugieren una subestimación de la variabilidad intraespecífica debido a la menor abundancia de las especies más sensibles bajo estrés. No se observaron diferencias entre los tratamientos de control e irrigación.
Síntesis: Nuestros resultados sugieren que la composición de rasgos funcionales de las comunidades puede cambiar bajo la sequía. La variación temporal debe ser considerada para predecir el funcionamiento de los ecosistemas en el contexto de cambio climático.
These findings suggest that functional trait composition of grassland communities may shift under climate change‐induced drought, depending on the growing season timings. Trait‐based attempts to predict ecosystem functioning must account for such temporal variation in community trait values.</abstract><cop>Oxford</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/1365-2745.14395</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0002-6085-4433</orcidid><orcidid>https://orcid.org/0000-0002-1309-7716</orcidid><orcidid>https://orcid.org/0000-0002-4563-2840</orcidid><orcidid>https://orcid.org/0000-0002-6189-2124</orcidid><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0022-0477 |
ispartof | The Journal of ecology, 2024-10, Vol.112 (10), p.2292-2306 |
issn | 0022-0477 1365-2745 |
language | eng |
recordid | cdi_proquest_journals_3111729508 |
source | Wiley Online Library Journals Frontfile Complete |
subjects | Abundance climate Climate change Community composition community structure community‐weighted means Composition Drought Dry matter Dry matter content Ecological function Ecosystem services ecosystems Environmental conditions Extreme weather functional traits Grasslands Growing season intraspecific variability intraspecific variation irrigation Leaf area leaf dry matter content leaf thickness Leaves Mowing Phosphorus phosphorus content plant height Plant layout Plants Plants (botany) Precipitation Seasons species species abundance specific leaf area temporal variation Temporal variations |
title | Differential responses of community‐level functional traits to mid‐ and late‐season experimental drought in a temperate grassland |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-20T14%3A55%3A35IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Differential%20responses%20of%20community%E2%80%90level%20functional%20traits%20to%20mid%E2%80%90%20and%20late%E2%80%90season%20experimental%20drought%20in%20a%20temperate%20grassland&rft.jtitle=The%20Journal%20of%20ecology&rft.au=Fenollosa,%20E.&rft.date=2024-10&rft.volume=112&rft.issue=10&rft.spage=2292&rft.epage=2306&rft.pages=2292-2306&rft.issn=0022-0477&rft.eissn=1365-2745&rft_id=info:doi/10.1111/1365-2745.14395&rft_dat=%3Cproquest_cross%3E3153850564%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=3111729508&rft_id=info:pmid/&rfr_iscdi=true |