Download the full-sized PDF
Permanent link (DOI): https://doi.org/10.7939/R3RB6W44W
This file is in the following communities:
|Roy Berg Kinsella Research Ranch|
This file is in the following collections:
|Journal Articles (Kinsella Ranch)|
Regional boreal biodiversity peaks at intermediate human disturbance Open Access
- Author or creator
Cahill Jr, J. F.
- Additional contributors
- Type of item
- Journal Article (Published)
The worldwide biodiversity crisis has intensified the need to better understand how biodiversity and human disturbance are related. The 'intermediate disturbance hypothesis' suggests that disturbance regimes generate predictable non-linear patterns in species richness. Evidence often contradicts intermediate disturbance hypothesis at small scales, and is generally lacking at large regional scales. Here, we present the largest extent study of human impacts on boreal plant biodiversity to date. Disturbance extent ranged from 0 to 100% disturbed in vascular plant communities, varying from intact forest to agricultural fields, forestry cut blocks and oil sands. We show for the first time that across a broad region species richness peaked in communities with intermediate anthropogenic disturbance, as predicted by intermediate disturbance hypothesis, even when accounting for many environmental covariates. Intermediate disturbance hypothesis was consistently supported across trees, shrubs, forbs and grasses, with temporary and perpetual disturbances. However, only native species fit this pattern; exotic species richness increased linearly with disturbance.
- Date created
- License information
- Attribution-NonCommercial 4.0 International
- Citation for previous publication
SJ Mayor, Cahill Jr, J.F., F He, P Sólymos, S Boutin. (2012).Regional boreal biodiversity peaks at intermediate human disturbance. Nature communications, 3. 1142. http://dx.doi.org/10.1038/ncomms2145
- Link to related item
- Date Uploaded
- Date Modified
- Audit Status
- Audits have not yet been run on this file.
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 503446
Last modified: 2016:06:24 18:08:51-06:00
Original checksum: 3347adee50dd6f66232936d8867bbeec
Copyright note: ?? 2012 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.
Well formed: true
File title: Regional boreal biodiversity peaks at intermediate human disturbance
File author: J.F. Cahill
Page count: 6