@article {6133,
	title = {Linking changes in species composition and biomass in a globally distributed grassland experiment},
	journal = {Ecology Letters},
	volume = {25},
	year = {2022},
	pages = {2699-2712},
	keywords = {LTER-KNZ},
	doi = {10.1111/ele.14126},
	url = {https://onlinelibrary.wiley.com/doi/10.1111/ele.14126},
	author = {Ladouceur, Emma and Blowes, Shane A. and Chase, Jonathan M. and Clark, Adam T. and Garbowski, Magda and Alberti, Juan and Arnillas, Carlos Alberto and Bakker, Jonathan D. and Barrio, Isabel C. and Bharath, Siddharth and Borer, Elizabeth T. and Brudvig, Lars A. and Cadotte, Marc W. and Chen, Qingqing and Collins, Scott L. and Dickman, Christopher R. and Donohue, Ian and Du, Guozhen and Ebeling, Anne and Eisenhauer, Nico and Fay, Philip A. and Hagenah, Nicole and Hautier, Yann and Jentsch, Anke and J{\'o}nsd{\'o}ttir, Ingibj{\"o}rg S. and Kimberly J. Komatsu and MacDougall, Andrew and Martina, Jason P. and Moore, Joslin L. and Morgan, John W. and Peri, Pablo L. and Power, ~A. and Ren, Zhengwei and Risch, Anita C. and Roscher, Christiane and Schuchardt, ~A. and Seabloom, Eric W. and Stevens, Carly J. and Veen, G.F. (Ciska) and Virtanen, Risto and Wardle, Glenda M. and Wilfahrt, Peter A. and Harpole, W. Stanley}
}
@article {6110,
	title = {Nutrient identity modifies the destabilising effects of eutrophication in grasslands},
	journal = {Ecology Letters},
	volume = {259},
	year = {2022},
	pages = {754 - 765},
	abstract = {<p>Nutrient enrichment can simultaneously increase and destabilise plant biomass production, with co-limitation by multiple nutrients potentially intensifying these effects. Here, we test how factorial additions of nitrogen (N), phosphorus (P) and potassium with essential nutrients (K+) affect the stability (mean/standard deviation) of aboveground biomass in 34 grasslands over 7 years. Destabilisation with fertilisation was prevalent but was driven by single nutrients, not synergistic nutrient interactions. On average, N-based treatments increased mean biomass production by 21\&ndash;51\% but increased its standard deviation by 40\&ndash;68\% and so consistently reduced stability. Adding P increased interannual variability and reduced stability without altering mean biomass, while K+ had no general effects. Declines in stability were largest in the most nutrient-limited grasslands, or where nutrients reduced species richness or intensified species synchrony. We show that nutrients can differentially impact the stability of biomass production, with N and P in particular disproportionately increasing its interannual variability.</p>},
	keywords = {LTER-KNZ},
	issn = {1461-023X},
	doi = {10.1111/ele.v25.410.1111/ele.13946},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/ele.13946},
	author = {Carroll, Oliver and Batzer, Evan and Bharath, Siddharth and Borer, Elizabeth T. and Campana, {\'\i}a and Esch, Ellen and Hautier, Yann and Ohlert, Timothy and Seabloom, Eric W. and Adler, Peter B. and Bakker, Jonathan D. and Biederman, Lori and Bugalho, Miguel N. and Caldeira, Maria and Chen, Qingqing and Davies, Kendi F. and Fay, Philip A. and Knops, Johannes M. H. and Kimberly J. Komatsu and Martina, Jason P. and McCann, Kevin S. and Moore, Joslin L. and Morgan, John W. and Muraina, Taofeek O. and Osborne, Brooke and Risch, Anita C. and Stevens, Carly and Wilfahrt, Peter A. and Yahdjian, Laura and MacDougall, Andrew S.},
	editor = {Pe{\~n}uelas, Josep}
}
@article {KNZ002004,
	title = {Nutrient addition increases grassland sensitivity to droughts},
	journal = {Ecology},
	volume = {101},
	year = {2020},
	pages = {e02981},
	abstract = {<p>Grasslands worldwide are expected to experience an increase in extreme events such as drought, along with simultaneous increases in mineral nutrient inputs as a result of human industrial activities. These changes are likely to interact because elevated nutrient inputs may alter plant diversity and increase the sensitivity to droughts. Dividing a system\&rsquo;s sensitivity to drought into resistance to change during the drought and rate of recovery after the drought generates insights into different dimensions of the system\&rsquo;s resilience in the face of drought. Here, we examine the effects of experimental nutrient fertilization and the resulting diversity loss on the resistance to and recovery from severe regional droughts. We do this at 13 North American sites spanning gradients of aridity, five annual grasslands in California, and eight perennial grasslands in the Great Plains. We measured rate of resistance as the change in annual aboveground biomass (ANPP) per unit change in growing season precipitation as conditions declined from normal to drought. We measured recovery as the change in ANPP during the postdrought period and the return to normal precipitation. Resistance and recovery did not vary across the 400-mm range of mean growing season precipitation spanned by our sites in the Great Plains. However, chronic nutrient fertilization in the Great Plains reduced drought resistance and increased drought recovery. In the California annual grasslands, arid sites had a greater recovery postdrought than mesic sites, and nutrient addition had no consistent effects on resistance or recovery. Across all study sites, we found that predrought species richness in natural grasslands was not consistently associated with rates of resistance to or recovery from the drought, in contrast to earlier findings from experimentally assembled grassland communities. Taken together, these results suggest that human-induced eutrophication may destabilize grassland primary production, but the effects of this may vary across regions and flora, especially between perennial and annual-dominated grasslands.</p>},
	keywords = {LTER-KNZ},
	doi = {10.1002/ecy.2981},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/ecy.2981},
	author = {Bharath, Siddharth and E.T. Borer and L.A. Biederman and D.M. Blumenthal and Fay, Philip A. and Gherardi, Laureano A. and Knops, Johannes M. H. and Leakey, Andrew D. B. and Yahdjian, Laura and Seabloom, Eric W.}
}
