Jitang Li, Zehao Shen, Antonio Gazol, Eryuan Liang, Xuejing Wang, J. Julio Camarero
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Given the spatial variability in climate warming rates and aridification, understanding how trees respond to droughts of different characteristics (duration, recurrence, severity) in forested biomes is crucial to forecast productivity trends.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>Global.</p>\n </section>\n \n <section>\n \n <h3> Time Period</h3>\n \n <p>1950–2020.</p>\n </section>\n \n <section>\n \n <h3> Major Taxa Studied</h3>\n \n <p>Tree species.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>By explicitly considering different drought durations (single-year and multi-year extreme droughts), we assessed drought impacts on the growth of global forests. In addition, the roles played by environmental conditions (climate, soils), stand attributes (age, density), functional traits (wood density, leaf and hydraulic traits), and phylogeny in forest responses to drought were also considered. We used three tree-ring databases (global ITRDB, European GenTree, and tropical data) accounting for 4374 site chronologies during the period 1950–2020, and quantified patterns in tree responses to drought in different climatic regions and biomes, including tropical forests.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>In general, significantly higher <i>R</i><sub><i>t</i></sub> and <i>R</i><sub><i>s</i></sub> were observed in humid regions. Interestingly, while multi-year extreme droughts caused worse impacts than single extreme droughts on <i>R</i><sub><i>s</i></sub>, they did not affect <i>R</i><sub><i>t</i></sub> among drought events. Specifically, <i>R</i><sub><i>t</i></sub> in arid regions was phylogenetically conserved and largely depended on wood density (WD) and hydraulic safety margin (HSM), while in humid regions, it was closely linked to climate, SLA, and HSM.</p>\n </section>\n \n <section>\n \n <h3> Main Conclusions</h3>\n \n <p>These findings provide new insights on the forest responses to different types of droughts, emphasising an ecological and evolutionary framework of jointly considering environmental conditions, phylogeny, and functional traits in predicting growth resilience to guide management under more arid conditions.</p>\n </section>\n </div>","PeriodicalId":176,"journal":{"name":"Global Ecology and Biogeography","volume":"34 10","pages":""},"PeriodicalIF":6.0000,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Phylogeny and Climate Jointly Modulate Forest Growth Resistance in Response to Extreme Droughts in Arid Regions\",\"authors\":\"Jitang Li, Zehao Shen, Antonio Gazol, Eryuan Liang, Xuejing Wang, J. Julio Camarero\",\"doi\":\"10.1111/geb.70129\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Aim</h3>\\n \\n <p>Repeated droughts have proven more harmful to forest growth than single extreme droughts. However, the impacts of drought durations on global forests and their underlying drivers remain poorly understood. The drought responses can be evaluated by drought sensitivity (resistance, <i>R</i><sub><i>t</i></sub>) and the post-drought recovery rate (resilience, <i>R</i><sub><i>s</i></sub>). Differing drought responses are attributed to the different evolutionary strategies of species, which are shaped by their distinct physiological traits. Given the spatial variability in climate warming rates and aridification, understanding how trees respond to droughts of different characteristics (duration, recurrence, severity) in forested biomes is crucial to forecast productivity trends.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Location</h3>\\n \\n <p>Global.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Time Period</h3>\\n \\n <p>1950–2020.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Major Taxa Studied</h3>\\n \\n <p>Tree species.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>By explicitly considering different drought durations (single-year and multi-year extreme droughts), we assessed drought impacts on the growth of global forests. In addition, the roles played by environmental conditions (climate, soils), stand attributes (age, density), functional traits (wood density, leaf and hydraulic traits), and phylogeny in forest responses to drought were also considered. We used three tree-ring databases (global ITRDB, European GenTree, and tropical data) accounting for 4374 site chronologies during the period 1950–2020, and quantified patterns in tree responses to drought in different climatic regions and biomes, including tropical forests.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>In general, significantly higher <i>R</i><sub><i>t</i></sub> and <i>R</i><sub><i>s</i></sub> were observed in humid regions. Interestingly, while multi-year extreme droughts caused worse impacts than single extreme droughts on <i>R</i><sub><i>s</i></sub>, they did not affect <i>R</i><sub><i>t</i></sub> among drought events. Specifically, <i>R</i><sub><i>t</i></sub> in arid regions was phylogenetically conserved and largely depended on wood density (WD) and hydraulic safety margin (HSM), while in humid regions, it was closely linked to climate, SLA, and HSM.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Main Conclusions</h3>\\n \\n <p>These findings provide new insights on the forest responses to different types of droughts, emphasising an ecological and evolutionary framework of jointly considering environmental conditions, phylogeny, and functional traits in predicting growth resilience to guide management under more arid conditions.</p>\\n </section>\\n </div>\",\"PeriodicalId\":176,\"journal\":{\"name\":\"Global Ecology and Biogeography\",\"volume\":\"34 10\",\"pages\":\"\"},\"PeriodicalIF\":6.0000,\"publicationDate\":\"2025-10-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Global Ecology and Biogeography\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/geb.70129\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Global Ecology and Biogeography","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/geb.70129","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ECOLOGY","Score":null,"Total":0}
Phylogeny and Climate Jointly Modulate Forest Growth Resistance in Response to Extreme Droughts in Arid Regions
Aim
Repeated droughts have proven more harmful to forest growth than single extreme droughts. However, the impacts of drought durations on global forests and their underlying drivers remain poorly understood. The drought responses can be evaluated by drought sensitivity (resistance, Rt) and the post-drought recovery rate (resilience, Rs). Differing drought responses are attributed to the different evolutionary strategies of species, which are shaped by their distinct physiological traits. Given the spatial variability in climate warming rates and aridification, understanding how trees respond to droughts of different characteristics (duration, recurrence, severity) in forested biomes is crucial to forecast productivity trends.
Location
Global.
Time Period
1950–2020.
Major Taxa Studied
Tree species.
Methods
By explicitly considering different drought durations (single-year and multi-year extreme droughts), we assessed drought impacts on the growth of global forests. In addition, the roles played by environmental conditions (climate, soils), stand attributes (age, density), functional traits (wood density, leaf and hydraulic traits), and phylogeny in forest responses to drought were also considered. We used three tree-ring databases (global ITRDB, European GenTree, and tropical data) accounting for 4374 site chronologies during the period 1950–2020, and quantified patterns in tree responses to drought in different climatic regions and biomes, including tropical forests.
Results
In general, significantly higher Rt and Rs were observed in humid regions. Interestingly, while multi-year extreme droughts caused worse impacts than single extreme droughts on Rs, they did not affect Rt among drought events. Specifically, Rt in arid regions was phylogenetically conserved and largely depended on wood density (WD) and hydraulic safety margin (HSM), while in humid regions, it was closely linked to climate, SLA, and HSM.
Main Conclusions
These findings provide new insights on the forest responses to different types of droughts, emphasising an ecological and evolutionary framework of jointly considering environmental conditions, phylogeny, and functional traits in predicting growth resilience to guide management under more arid conditions.
期刊介绍：
Global Ecology and Biogeography (GEB) welcomes papers that investigate broad-scale (in space, time and/or taxonomy), general patterns in the organization of ecological systems and assemblages, and the processes that underlie them. In particular, GEB welcomes studies that use macroecological methods, comparative analyses, meta-analyses, reviews, spatial analyses and modelling to arrive at general, conceptual conclusions. Studies in GEB need not be global in spatial extent, but the conclusions and implications of the study must be relevant to ecologists and biogeographers globally, rather than being limited to local areas, or specific taxa. Similarly, GEB is not limited to spatial studies; we are equally interested in the general patterns of nature through time, among taxa (e.g., body sizes, dispersal abilities), through the course of evolution, etc. Further, GEB welcomes papers that investigate general impacts of human activities on ecological systems in accordance with the above criteria.
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