Xiang Liu, Ziyuan Lin, Kui Hu, Xingxing Wang, Peng Zhang, Yao Xiao, Li Zhang, Mu Liu
{"title":"群落范围内草食的地理变异与种内变异模式相匹配，而不是物种更替模式","authors":"Xiang Liu, Ziyuan Lin, Kui Hu, Xingxing Wang, Peng Zhang, Yao Xiao, Li Zhang, Mu Liu","doi":"10.1111/geb.13690","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aim</h3>\n \n <p>Attempts over the past 30 years to explain geographical variation in the strength of herbivore pressure have given rise to ecological hypotheses like the latitudinal herbivory hypothesis. This hypothesis, however, has rarely been tested using community-level data. Therefore, the aim of our study was to examine the patterns and potential mechanisms underlying geographical variation in community-wide herbivory.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>The Qinghai-Tibetan Plateau.</p>\n </section>\n \n <section>\n \n <h3> Time Period</h3>\n \n <p>July 2021.</p>\n </section>\n \n <section>\n \n <h3> Major Taxa Studied</h3>\n \n <p>Plants.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>We selected 43 grassland sites along a 1500-km latitudinal gradient (<i>c</i>. 27°N to 39°N) and a 2698-m elevational gradient (1886–4584 m) on the Qinghai-Tibetan Plateau. We evaluated geographical patterns in invertebrate herbivory pressure at the population and community levels, while also evaluating the importance of geographical variation in mediating the effects of abiotic and biotic factors on intraspecific variation (through changes in herbivory on component species) and species turnover effects (through changes in plant community composition).</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Community-wide herbivory decreased with latitude, mirroring intraspecific variation, while species turnover effects did not vary along any tested geographical gradients. Furthermore, we found that geographical variation in community-wide herbivory was strongly positively correlated with soil nitrogen content. We also found a positive effect of soil nitrogen content on intraspecific variation and a negative effect of plant community biomass on species turnover effects.</p>\n </section>\n \n <section>\n \n <h3> Main Conclusions</h3>\n \n <p>The latitudinal gradient in community-wide herbivory was primarily mediated by intraspecific variation, which was in turn associated with a gradient in soil nitrogen content. Our findings highlight the need for community-wide assessments of geographical variation in plant–herbivore interactions, decomposing community-wide herbivory into intraspecific variation and species turnover effects.</p>\n </section>\n </div>","PeriodicalId":176,"journal":{"name":"Global Ecology and Biogeography","volume":"32 7","pages":"1140-1151"},"PeriodicalIF":6.3000,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Geographical variation in community-wide herbivory matches patterns of intraspecific variation instead of species turnover\",\"authors\":\"Xiang Liu, Ziyuan Lin, Kui Hu, Xingxing Wang, Peng Zhang, Yao Xiao, Li Zhang, Mu Liu\",\"doi\":\"10.1111/geb.13690\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Aim</h3>\\n \\n <p>Attempts over the past 30 years to explain geographical variation in the strength of herbivore pressure have given rise to ecological hypotheses like the latitudinal herbivory hypothesis. This hypothesis, however, has rarely been tested using community-level data. Therefore, the aim of our study was to examine the patterns and potential mechanisms underlying geographical variation in community-wide herbivory.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Location</h3>\\n \\n <p>The Qinghai-Tibetan Plateau.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Time Period</h3>\\n \\n <p>July 2021.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Major Taxa Studied</h3>\\n \\n <p>Plants.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>We selected 43 grassland sites along a 1500-km latitudinal gradient (<i>c</i>. 27°N to 39°N) and a 2698-m elevational gradient (1886–4584 m) on the Qinghai-Tibetan Plateau. We evaluated geographical patterns in invertebrate herbivory pressure at the population and community levels, while also evaluating the importance of geographical variation in mediating the effects of abiotic and biotic factors on intraspecific variation (through changes in herbivory on component species) and species turnover effects (through changes in plant community composition).</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>Community-wide herbivory decreased with latitude, mirroring intraspecific variation, while species turnover effects did not vary along any tested geographical gradients. Furthermore, we found that geographical variation in community-wide herbivory was strongly positively correlated with soil nitrogen content. 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Geographical variation in community-wide herbivory matches patterns of intraspecific variation instead of species turnover
Aim
Attempts over the past 30 years to explain geographical variation in the strength of herbivore pressure have given rise to ecological hypotheses like the latitudinal herbivory hypothesis. This hypothesis, however, has rarely been tested using community-level data. Therefore, the aim of our study was to examine the patterns and potential mechanisms underlying geographical variation in community-wide herbivory.
Location
The Qinghai-Tibetan Plateau.
Time Period
July 2021.
Major Taxa Studied
Plants.
Methods
We selected 43 grassland sites along a 1500-km latitudinal gradient (c. 27°N to 39°N) and a 2698-m elevational gradient (1886–4584 m) on the Qinghai-Tibetan Plateau. We evaluated geographical patterns in invertebrate herbivory pressure at the population and community levels, while also evaluating the importance of geographical variation in mediating the effects of abiotic and biotic factors on intraspecific variation (through changes in herbivory on component species) and species turnover effects (through changes in plant community composition).
Results
Community-wide herbivory decreased with latitude, mirroring intraspecific variation, while species turnover effects did not vary along any tested geographical gradients. Furthermore, we found that geographical variation in community-wide herbivory was strongly positively correlated with soil nitrogen content. We also found a positive effect of soil nitrogen content on intraspecific variation and a negative effect of plant community biomass on species turnover effects.
Main Conclusions
The latitudinal gradient in community-wide herbivory was primarily mediated by intraspecific variation, which was in turn associated with a gradient in soil nitrogen content. Our findings highlight the need for community-wide assessments of geographical variation in plant–herbivore interactions, decomposing community-wide herbivory into intraspecific variation and species turnover effects.
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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