02369nas a2200457 4500008004100000245008900041210006900130300001400199490000700213520103900220100001701259700002601276700001701302700001701319700001801336700002101354700001701375700001501392700001901407700002401426700001801450700001701468700001901485700001901504700001801523700002301541700002001564700002201584700001801606700002401624700002601648700002401674700002101698700002301719700002301742700002601765700001801791700002401809700002001833856005801853 2021 eng d00aDeterminants of community compositional change are equally affected by global change0 aDeterminants of community compositional change are equally affec a1892-19040 v243 a
Global change is impacting plant community composition, but the mechanisms underlying these changes are unclear. Using a dataset of 58 global change experiments, we tested the five fundamental mechanisms of community change: changes in evenness and richness, reordering, species gains and losses. We found 71% of communities were impacted by global change treatments, and 88% of communities that were exposed to two or more global change drivers were impacted. Further, all mechanisms of change were equally likely to be affected by global change treatments—species losses and changes in richness were just as common as species gains and reordering. We also found no evidence of a progression of community changes, for example, reordering and changes in evenness did not precede species gains and losses. We demonstrate that all processes underlying plant community composition changes are equally affected by treatments and often occur simultaneously, necessitating a wholistic approach to quantifying community changes.
1 aAvolio, M.L.1 aKomatsu, Kimberly, J.1 aCollins, S.L1 aGrman, Emily1 aKoerner, S.E.1 aTredennick, A.T.1 aWilcox, K.R.1 aBaer, S.G.1 aBoughton, E.H.1 aBritton, Andrea, J.1 aFoster, Bryan1 aGough, Laura1 aHovenden, Mark1 aIsbell, Forest1 aJentsch, Anke1 aJohnson, David, S.1 aKnapp, Alan, K.1 aKreyling, Juergen1 aLangley, Adam1 aLortie, Christopher1 aMcCulley, Rebecca, L.1 aMcLaren, Jennie, R.1 aReich, Peter, B.1 aSeabloom, Eric, W.1 aSmith, Melinda, D.1 aSuding, Katharine, N.1 aSuttle, Blake1 aTognetti, Pedro, M.1 aAnderson, Marti uhttps://onlinelibrary.wiley.com/doi/10.1111/ele.13824