TY - JOUR
T1 - Pervasive within-species spatial repulsion among adult tropical trees
AU - Kalyuzhny, Michael
AU - Lake, Jeffrey K.
AU - Wright, S. Joseph
AU - Ostling, Annette M.
N1 - Publisher Copyright:
© 2023 American Association for the Advancement of Science. All rights reserved.
PY - 2023/8/4
Y1 - 2023/8/4
N2 - For species to coexist, performance must decline as the density of conspecific individuals increases. Although evidence for such conspecific negative density dependence (CNDD) exists in forests, the within-species spatial repulsion it should produce has rarely been demonstrated in adults. In this study, we show that in comparison to a null model of stochastic birth, death, and limited dispersal, the adults of dozens of tropical forest tree species show strong spatial repulsion, some to surprising distances of approximately 100 meters. We used simulations to show that such strong repulsion can only occur if CNDD considerably exceeds heterospecific negative density dependence—an even stronger condition required for coexistence—and that large-scale repulsion can indeed result from small-scale CNDD. These results demonstrate substantial niche differences between species that may stabilize species diversity.
AB - For species to coexist, performance must decline as the density of conspecific individuals increases. Although evidence for such conspecific negative density dependence (CNDD) exists in forests, the within-species spatial repulsion it should produce has rarely been demonstrated in adults. In this study, we show that in comparison to a null model of stochastic birth, death, and limited dispersal, the adults of dozens of tropical forest tree species show strong spatial repulsion, some to surprising distances of approximately 100 meters. We used simulations to show that such strong repulsion can only occur if CNDD considerably exceeds heterospecific negative density dependence—an even stronger condition required for coexistence—and that large-scale repulsion can indeed result from small-scale CNDD. These results demonstrate substantial niche differences between species that may stabilize species diversity.
UR - http://www.scopus.com/inward/record.url?scp=85166592818&partnerID=8YFLogxK
U2 - 10.1126/science.adg7021
DO - 10.1126/science.adg7021
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C2 - 37535716
AN - SCOPUS:85166592818
SN - 0036-8075
VL - 381
SP - 563
EP - 568
JO - Science
JF - Science
IS - 6657
ER -