Grégory Sonnier, David J. Augustine, Shishir Paudel, Lauren M. Porensky, Maria Silveira, David Toledo, Shefali Azad, Raoul K. Boughton, Dawn M. Browning, Patrick E. Clark, Philip A. Fay, Nicole Kaplan, Kate M. Thibault, Hilary M. Swain, Kristen S. Veum, Elizabeth H. Boughton
{"title":"植物多样性和管理强度对北美牧场生产力规模和稳定性的影响","authors":"Grégory Sonnier, David J. Augustine, Shishir Paudel, Lauren M. Porensky, Maria Silveira, David Toledo, Shefali Azad, Raoul K. Boughton, Dawn M. Browning, Patrick E. Clark, Philip A. Fay, Nicole Kaplan, Kate M. Thibault, Hilary M. Swain, Kristen S. Veum, Elizabeth H. Boughton","doi":"10.1111/avsc.12776","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Questions</h3>\n \n <p>Grasslands provide important provisioning services worldwide and their management has consequences for these services. Management intensification is a widespread land-use change and has accelerated across North America to meet rising demands on productivity, yet its impact on the relationship between plant diversity and productivity is still unclear. Here, we investigated the relationship between plant diversity and grassland productivity across nine ecoclimatic domains of the continental United States. We also tested the effect of management intensification on diversity and productivity in four case studies.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>We acquired remotely sensed gross primary productivity data (GPP, 1986–2018) and plant diversity data measured at different spatial scales (1, 10, 100, 400 m<sup>2</sup>), as well as climate variables including the Palmer drought index from two ecological networks. We used general linear mixed models to relate GPP to plant diversity across sites. For the case study analysis, we used linear mixed models to relate plant diversity to management intensity, and tested if the management intensity influenced the relationship between GPP (mean and temporal variation) and drought.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Across all sites, we observed positive relationships among species richness, productivity, and the temporal stability of mean annual biomass production. These relationships were not affected by the scale at which species richness was observed. In three out of the four case studies, we observed that management effects on species richness were only significant at broader scales (i.e., ≥10 m<sup>2</sup>) with no clear effect found at the commonly used 1-m<sup>2</sup> quadrat scale. In one case study, species-poor, intensively managed pastures presented the highest productivity but were more sensitive to dry conditions than less intensified pastures. However, in other case studies, we did not observe significant effects of management intensity on the magnitude or stability of productivity.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Generalization across studies may be difficult and require the development of intensification indices general enough to be applied across diverse management strategies in grazilands. Understanding how management intensification affects grassland productivity will inform the development of sustainable intensification strategies.</p>\n </section>\n </div>","PeriodicalId":55494,"journal":{"name":"Applied Vegetation Science","volume":"27 2","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/avsc.12776","citationCount":"0","resultStr":"{\"title\":\"Impact of plant diversity and management intensity on magnitude and stability of productivity in North American grazing lands\",\"authors\":\"Grégory Sonnier, David J. Augustine, Shishir Paudel, Lauren M. Porensky, Maria Silveira, David Toledo, Shefali Azad, Raoul K. Boughton, Dawn M. Browning, Patrick E. Clark, Philip A. Fay, Nicole Kaplan, Kate M. Thibault, Hilary M. Swain, Kristen S. Veum, Elizabeth H. Boughton\",\"doi\":\"10.1111/avsc.12776\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Questions</h3>\\n \\n <p>Grasslands provide important provisioning services worldwide and their management has consequences for these services. Management intensification is a widespread land-use change and has accelerated across North America to meet rising demands on productivity, yet its impact on the relationship between plant diversity and productivity is still unclear. Here, we investigated the relationship between plant diversity and grassland productivity across nine ecoclimatic domains of the continental United States. We also tested the effect of management intensification on diversity and productivity in four case studies.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>We acquired remotely sensed gross primary productivity data (GPP, 1986–2018) and plant diversity data measured at different spatial scales (1, 10, 100, 400 m<sup>2</sup>), as well as climate variables including the Palmer drought index from two ecological networks. We used general linear mixed models to relate GPP to plant diversity across sites. For the case study analysis, we used linear mixed models to relate plant diversity to management intensity, and tested if the management intensity influenced the relationship between GPP (mean and temporal variation) and drought.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>Across all sites, we observed positive relationships among species richness, productivity, and the temporal stability of mean annual biomass production. These relationships were not affected by the scale at which species richness was observed. In three out of the four case studies, we observed that management effects on species richness were only significant at broader scales (i.e., ≥10 m<sup>2</sup>) with no clear effect found at the commonly used 1-m<sup>2</sup> quadrat scale. In one case study, species-poor, intensively managed pastures presented the highest productivity but were more sensitive to dry conditions than less intensified pastures. However, in other case studies, we did not observe significant effects of management intensity on the magnitude or stability of productivity.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Conclusions</h3>\\n \\n <p>Generalization across studies may be difficult and require the development of intensification indices general enough to be applied across diverse management strategies in grazilands. 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Impact of plant diversity and management intensity on magnitude and stability of productivity in North American grazing lands
Questions
Grasslands provide important provisioning services worldwide and their management has consequences for these services. Management intensification is a widespread land-use change and has accelerated across North America to meet rising demands on productivity, yet its impact on the relationship between plant diversity and productivity is still unclear. Here, we investigated the relationship between plant diversity and grassland productivity across nine ecoclimatic domains of the continental United States. We also tested the effect of management intensification on diversity and productivity in four case studies.
Methods
We acquired remotely sensed gross primary productivity data (GPP, 1986–2018) and plant diversity data measured at different spatial scales (1, 10, 100, 400 m2), as well as climate variables including the Palmer drought index from two ecological networks. We used general linear mixed models to relate GPP to plant diversity across sites. For the case study analysis, we used linear mixed models to relate plant diversity to management intensity, and tested if the management intensity influenced the relationship between GPP (mean and temporal variation) and drought.
Results
Across all sites, we observed positive relationships among species richness, productivity, and the temporal stability of mean annual biomass production. These relationships were not affected by the scale at which species richness was observed. In three out of the four case studies, we observed that management effects on species richness were only significant at broader scales (i.e., ≥10 m2) with no clear effect found at the commonly used 1-m2 quadrat scale. In one case study, species-poor, intensively managed pastures presented the highest productivity but were more sensitive to dry conditions than less intensified pastures. However, in other case studies, we did not observe significant effects of management intensity on the magnitude or stability of productivity.
Conclusions
Generalization across studies may be difficult and require the development of intensification indices general enough to be applied across diverse management strategies in grazilands. Understanding how management intensification affects grassland productivity will inform the development of sustainable intensification strategies.
期刊介绍：
Applied Vegetation Science focuses on community-level topics relevant to human interaction with vegetation, including global change, nature conservation, nature management, restoration of plant communities and of natural habitats, and the planning of semi-natural and urban landscapes. Vegetation survey, modelling and remote-sensing applications are welcome. Papers on vegetation science which do not fit to this scope (do not have an applied aspect and are not vegetation survey) should be directed to our associate journal, the Journal of Vegetation Science. Both journals publish papers on the ecology of a single species only if it plays a key role in structuring plant communities.
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