@article{fdi:010048177, title = {{N}iches versus neutrality : uncovering the drivers of diversity in a species-rich community}, author = {{V}ergnon, {R}{\'e}mi and {D}ulvy, {N}. {K}. and {F}reckleton, {R}. {P}.}, editor = {}, language = {{ENG}}, abstract = {{E}cological models suggest that high diversity can be generated by purely niche-based, purely neutral or by a mixture of niche-based and neutral ecological processes. {H}ere, we compare the degree to which four contrasting hypotheses for coexistence, ranging from niche-based to neutral, explain species richness along a body mass niche axis. {W}e derive predictions from these hypotheses and confront them with species body-mass patterns in a highly sampled marine phytoplankton community. {W}e find that these patterns are consistent only with a mechanism that combines niche and neutral processes, such as the emergent neutrality mechanism. {I}n this work, we provide the first empirical evidence that a niche-neutral model can explain niche space occupancy pattern in a natural species-rich community. {W}e suggest this class of model may be a useful hypothesis for the generation and maintenance of species diversity in other size-structured communities.}, keywords = {{B}iodiversity ; body mass ; coexistence ; competition ; migration ; neutrality ; niche space ; niche-based processes ; species similarity}, booktitle = {}, journal = {{E}cology {L}etters}, volume = {12}, numero = {10}, pages = {1079--1090}, ISSN = {1461-023{X}}, year = {2009}, DOI = {10.1111/j.1461-0248.2009.01364.x}, URL = {https://www.documentation.ird.fr/hor/fdi:010048177}, }