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This data package consists of two files to study long-term changes in communities across a range of systems (freshwater and terrestrial) and organism types (from short-lived (sub annual) to long-lived species) that are both primary producers and consumers. We compiled many datasets from publicly available archives (41 datasets are from 14 LTER sites). All datasets must have had a measure of species level abundance to calculate more derived community ecological metrics beyond species richness. These data can be used to study community dynamics over space and time.

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The goals and focal research questions are copied below from the Nutrient Network website. More information can be found at nutnet.org. NutNet focal research questions: (1) How general is our current understanding of productivity-diversity relationships? (2) To what extent are plant production and diversity co-limited by multiple nutrients in herbacoues-dominated communities? (3) Under what conditions do grazers or fertilization control plant biomass, diversity, and composition? NutNet goals: (1) To collect data from a broad range of sites in a consistent manner to allow direct comparisons of environment-productivity-diversity relationships among systems around the world. This is currently occurring at each site in the network and, when these data are compiled, will allow us to provide new insights into several important, unanswered questions in ecology. (2) To implement a cross-site experiment requiring only nominal investment of time and resources by each investigator, but quantifying community and ecosystem responses in a wide range of herbaceous-dominated ecosystems (i.e., desert grasslands to arctic tundra).

The effects of herbivores and their interactions with nutrient availability on primary production and plant community composition in grassland systems is expected to vary with herbivore type. Although nutrient additions are known to affect plant species diversity and primary productivity, the role of herbivores in mediating the strength of these effects also remains unclear. Herbivores may alter plant responses to nutrient additions in several ways. First, herbivores can alter the plant community response to nutrient additions by either selectively feeding on particular groups of species (e.g. grasses versus forbs) or by generally opening up space, allowing for species turnover and immigration. Second, feeding by herbivores may reduce the production response to nutrient additions if the plants cannot compensate for tissue lost to herbivory. As the functional effects of vertebrate and invertebrate herbivores on plant community composition and production may vary, the interactive effects of vertebrate versus invertebrate herbivores with nutrient additions may also vary. Here we are experimentally assessing the independent and interactive effects of removing vertebrate and invertebrate herbivores on aboveground biomass and plant community composition in native tallgrass prairie. Further, we are examining whether the removal of vertebrate and invertebrate herbivores interacts with nutrient availability. By doing this, we address three related questions: 1) what is the relative strength of the effects of invertebrate versus vertebrate herbivory in a grassland system; 2) how does herbivory (invertebrate and/or vertebrate) affect the relative abundances of grasses and forbs, the two dominant plant functional types within the ecosystem; and 3) what are the consequences of these changes in composition for aboveground net primary productivity, an important ecosystem function?

R code, derived metrics, and limited metadata associated with Wilcox et al. (2017). Asynchrony among local communities stabilizes ecosystem function of metacommunities. Ecology Letters.
When using this data or code, please cite the original publication:
Wilcox, K.R., A.T. Tredennick, S. Koerner, E. Grman, L. Hallett, M. Avolio, K. La Pierre, G. Houseman, F. Isbell, D. Johnson, J. Alatalo, A. Baldwin, E. Bork, E. Boughton, W. Bowman, A. Britton, J. Cahill, S. Collins, G-Z. Du, A. Eskelinen, L. Gough, A. Jentsch, C. Kern, K. Klanderud, A. Knapp, J. Kreyling, Y. Luo, J. McLaren, P. Megonigal, V. Onipchenko, J. Prevéy, J. Price, C. Robinson, O. Sala, M. Smith, N. Soudzilovskaia, L. Souza, D. Tilman, S. White, Z. Xu, L. Yahdjian, Q. Yu, P. Zhang, Y, Zhang. (2017). Asynchrony among local communities stabilizes ecosystem function of metacommunities. Ecology Letters 20(12):1534–1545.
Additionally, please cite the Figshare file set:
Wilcox, K.R., A.T. Tredennick, S. Koerner, E. Grman, L. Hallett, M. Avolio, K. La Pierre. (2017). Data and code from: Asynchrony among local communities stabilizes ecosystem function of metacommunities. Figshare. https://dx.doi.org/10.6084/m9.figshare.5384167.
R CodeThe analysis proceeds in several steps, which can be viewed most easily by examining the ~/Wilcox_etal_DerivedData_and_Code/analysis_scripts/main_text_scripts/patches_source_all_scripts.R file. Questions about the code or analysis should be directed to Kevin Wilcox ([email protected]) or Andrew Tredennick ([email protected]).
Derived DataWe provide the full set of metrics (e.g., alpha, beta, and gamma stability and diversity) for each of our study sites. The main analysis and all figures in the paper can be reproduced using these metrics. Metrics were calculated from time series of abundance data from 62 grassland sites around the globe, although primarily from North America and Europe. The data is part of the CoRRE Data Base (http://corredata.weebly.com/), and those interested in using proprietary data not included in this fileset are encouraged to contact the CoRRE data base maintainers (http://corredata.weebly.com/contact.html).

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R code, derived metrics, and limited metadata associated with Wilcox et al. (2017). Asynchrony among local communities stabilizes ecosystem function of metacommunities. Ecology Letters.
When using this data or code, please cite the original publication:
Wilcox, K.R., A.T. Tredennick, S. Koerner, E. Grman, L. Hallett, M. Avolio, K. La Pierre, G. Houseman, F. Isbell, D. Johnson, J. Alatalo, A. Baldwin, E. Bork, E. Boughton, W. Bowman, A. Britton, J. Cahill, S. Collins, G-Z. Du, A. Eskelinen, L. Gough, A. Jentsch, C. Kern, K. Klanderud, A. Knapp, J. Kreyling, Y. Luo, J. McLaren, P. Megonigal, V. Onipchenko, J. Prevéy, J. Price, C. Robinson, O. Sala, M. Smith, N. Soudzilovskaia, L. Souza, D. Tilman, S. White, Z. Xu, L. Yahdjian, Q. Yu, P. Zhang, Y, Zhang. (2017). Asynchrony among local communities stabilizes ecosystem function of metacommunities. Ecology Letters 20(12):1534–1545.
Additionally, please cite the Figshare file set:
Wilcox, K.R., A.T. Tredennick, S. Koerner, E. Grman, L. Hallett, M. Avolio, K. La Pierre. (2017). Data and code from: Asynchrony among local communities stabilizes ecosystem function of metacommunities. Figshare. https://dx.doi.org/10.6084/m9.figshare.5384167.
R CodeThe analysis proceeds in several steps, which can be viewed most easily by examining the ~/Wilcox_etal_DerivedData_and_Code/analysis_scripts/main_text_scripts/patches_source_all_scripts.R file. Questions about the code or analysis should be directed to Kevin Wilcox ([email protected]) or Andrew Tredennick ([email protected]).
Derived DataWe provide the full set of metrics (e.g., alpha, beta, and gamma stability and diversity) for each of our study sites. The main analysis and all figures in the paper can be reproduced using these metrics. Metrics were calculated from time series of abundance data from 62 grassland sites around the globe, although primarily from North America and Europe. The data is part of the CoRRE Data Base (http://corredata.weebly.com/), and those interested in using proprietary data not included in this fileset are encouraged to contact the CoRRE data base maintainers (http://corredata.weebly.com/contact.html).

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