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Top predators constrain mesopredator distributions
ID Newsome, Thomas M. (Author), ID Greenville, Aaron (Author), ID Ćirović, Duško (Author), ID Dickman, Christopher R. (Author), ID Johnson, Chris (Author), ID Krofel, Miha (Author), ID Letnic, Mike (Author), ID Ripple, William J. (Author), ID Ritchie, Euan G. (Author), ID Stoyanov, Stoyan (Author), ID Wirsing, Aaron (Author)

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Abstract
Top predators can suppress mesopredators by killing them, competing for resources and instilling fear, but it is unclear how suppression of mesopredators varies with the distribution and abundance of top predators at large spatial scales and among different ecological contexts. We suggest that suppression of mesopredators will be strongest where top predators occur at high densities over large areas. These conditions are more likely to occur in the core than on the margins of top predator ranges. We propose the Enemy Constraint Hypothesis, which predicts weakened top-down effects on mesopredators towards the edge of top predators% ranges. Using bounty data from North America, Europe and Australia we show that the effects of top predators on mesopredators increase from the margin towards the core of their ranges, as predicted. Continuing global contraction of top predator ranges could promote further release of mesopredator populations, altering ecosystem structure and contributing to biodiversity loss.

Language:English
Keywords:Top predators, mesopredators, ecosystem structure, biodiversity
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Number of pages:7 str.
Numbering:#Vol. #8
PID:20.500.12556/RUL-97254 This link opens in a new window
UDC:630*156
ISSN on article:2041-1723
DOI:10.1038/ncomms15469 This link opens in a new window
COBISS.SI-ID:4809638 This link opens in a new window
Publication date in RUL:23.10.2017
Views:1544
Downloads:681
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Record is a part of a journal

Title:Nature communications
Shortened title:Nat. commun.
Publisher:Springer Nature
ISSN:2041-1723
COBISS.SI-ID:2315876 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:23.10.2017

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P4-0059
Name:Gozd, gozdarstvo in obnovljivi gozdni viri

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