@article {6200,
	title = {Clarifying the effect of biodiversity on productivity in natural ecosystems with longitudinal data and new methods for causal inference},
	journal = {Nature Communications},
	year = {In Press},
	keywords = {LTER-KNZ},
	author = {Dee, L.E. and Ferraro, P.J. and Severen, C. and Kimmel, K. and Borer, E.T. and Byrnes, J.E.K. and Clark, A. and Hautier, Y. and Hector, A. and Raynaud, X. and Reich, P.B. and Wright, A. and Arnillas, C.A. and Davies, K.F. and MacDougall, A.S. and Mori, A. and Smith, M.D. and Adler, P.B. and Bakker, J.D. and Braumann, K. and Cowles, J.M. and Komatsu, K.J. and Knops, J. and McCulley, R. and Moore, J.L. and Morgan, J.W. and Ohlert, T. and Power, S.A. and Sullivan, L. and Stevens, C. and Loreau, M.}
}
@article {KNZ002041,
	title = {Increasing effects of chronic nutrient enrichment on plant diversity loss and ecosystem productivity over time},
	journal = {Ecology},
	volume = {102},
	year = {2021},
	pages = {e03218},
	abstract = {<p>Human activities are enriching many of Earth\&rsquo;s ecosystems with biologically limiting mineral nutrients such as nitrogen (N) and phosphorus (P). In grasslands, this enrichment generally reduces plant diversity and increases productivity. The widely demonstrated positive effect of diversity on productivity suggests a potential negative feedback, whereby nutrient-induced declines in diversity reduce the initial gains in productivity arising from nutrient enrichment. In addition, plant productivity and diversity can be inhibited by accumulations of dead biomass, which may be altered by nutrient enrichment. Over longer timeframes, nutrient addition may increase soil fertility by increasing soil organic matter and nutrient pools. We examined the effects of 5-11 years of nutrient addition at 47 grasslands in twelve countries. Nutrient enrichment increased aboveground live biomass and reduced plant diversity at nearly all sites, and these effects became stronger over time. We did not find evidence that nutrient-induced losses of diversity reduced the positive effects of nutrients on biomass, however nutrient effects on live biomass increased more slowly at sites where litter was also increasing, regardless of plant diversity. This work suggests that short-term experiments may underestimate the long-term nutrient enrichment effects on global, grassland ecosystems.</p>},
	keywords = {LTER-KNZ},
	doi = {10.1002/ecy.3218},
	url = {https://onlinelibrary.wiley.com/doi/10.1002/ecy.3218},
	author = {Seabloom, E.W. and Adler, P.B. and Alberti, J. and Biederman, L. and Buckley, Y.M. and Cadotte, M.W. and S.L Collins and Dee, L. and Fay, P.A. and Firn, J. and Hagenah, N. and Harpole, W. S. and Hautier, Y. and Hector, A. and Hobbie, S.E. and Isbell, F. and Knops, J.M.H. and Kimberly J. Komatsu and Laungani, R. and MacDougall, A. and McCulley, R.L. and Moore, J.L. and Morgan, J.W. and Ohlert, T. and Prober, S.M. and Risch, A.C. and Schuetz, M. and Stevens, C.J. and Borer, E.T.}
}
