Abstract:
:The continuum hypothesis states that both deterministic and stochastic processes contribute to the assembly of ecological communities. However, the contextual dependency of these processes remains an open question that imposes strong limitations on predictions of community responses to environmental change. Here we measure community and habitat turnover across multiple vertical soil horizons at 183 sites across Scotland for bacteria and fungi, both dominant and functionally vital components of all soils but which differ substantially in their growth habit and dispersal capability. We find that habitat turnover is the primary driver of bacterial community turnover in general, although its importance decreases with increasing isolation and disturbance. Fungal communities, however, exhibit a highly stochastic assembly process, both neutral and non-neutral in nature, largely independent of disturbance. These findings suggest that increased focus on dispersal limitation and biotic interactions are necessary to manage and conserve the key ecosystem services provided by these assemblages.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Powell JR,Karunaratne S,Campbell CD,Yao H,Robinson L,Singh BKdoi
10.1038/ncomms9444subject
Has Abstractpub_date
2015-10-05 00:00:00pages
8444issn
2041-1723pii
ncomms9444journal_volume
6pub_type
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