Home About Browse Search
Svenska


Ecological impact of changes in intrinsic growth rates of species at different trophic levels

Selakovic, Sanja and Säterberg, Torbjörn and Heesterbeek, Hans (2022). Ecological impact of changes in intrinsic growth rates of species at different trophic levels. Oikos :4 , e08712
[Research article]

[img] PDF
1MB

Abstract

Decreased and increased intrinsic growth rate and abundance of a single species can severely and negatively impact other species in the same food web. Here we compare the wider system effects of decreased and increased intrinsic growth rates of species occupying different trophic levels. Specifically, we derive the change in growth rate of a single (focal) species necessary to cause a 90% reduction in the abundance - a quasi-extinction - of another species in model communities. We find that even relatively small changes, negative as well as positive, in the growth rate of the focal species can cause quasi-extinctions of others. Furthermore, the magnitude of change needed to cause a quasi-extinction depends on the trophic level of the perturbed species. The potential ecosystem impact of such 'negative' and 'positive' changes is largely unknown. We argue that such a targeted decrease or increase could be induced by human interference, such as hunting or harvesting, but also by an outbreak or fade-out of an infectious disease. As ecosystems maintain many and diverse infectious agents, these results suggest that these agents may play an important role in the structure and balance of ecosystems.

Authors/Creators:Selakovic, Sanja and Säterberg, Torbjörn and Heesterbeek, Hans
Title:Ecological impact of changes in intrinsic growth rates of species at different trophic levels
Series Name/Journal:Oikos
Year of publishing :2022
Number:4
Article number:e08712
Number of Pages:8
Publisher:WILEY
ISSN:0030-1299
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 3.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:ecosystems, infection, intrinsic growth rate, quasi extinction
URN:NBN:urn:nbn:se:slu:epsilon-p-116354
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116354
Additional ID:
Type of IDID
DOI10.1111/oik.08712
Web of Science (WoS)000758269600001
ID Code:27561
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:19 Apr 2022 06:25
Metadata Last Modified:19 Apr 2022 06:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits