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Resilience of ecosystem processes: a new approach shows that functional redundancy of biological control services is reduced by landscape simplification.

Feit, Benjamin and Blüthgen, Nico and Traugott, Michael and Jonsson, Mattias (2019):
Resilience of ecosystem processes: a new approach shows that functional redundancy of biological control services is reduced by landscape simplification.
22, In: Ecology letters, (10), pp. 1568-1577. ISSN 1461-0248,
DOI: 10.1111/ele.13347,
[Article]

Abstract

Functional redundancy can increase the resilience of ecosystem processes by providing insurance against species loss and the effects of abundance fluctuations. However, due to the difficulty of assessing individual species' contributions and the lack of a metric allowing for a quantification of redundancy within communities, few attempts have been made to estimate redundancy for individual ecosystem processes. We present a new method linking interaction metrics with metabolic theory that allows for a quantification of redundancy at the level of ecosystem processes. Using this approach, redundancy in the predation on aphids and other prey by natural enemies across a landscape heterogeneity gradient was estimated. Functional redundancy of predators was high in heterogeneous landscapes, low in homogeneous landscapes and scaled with predator specialisation. Our approach allows quantifying functional redundancy within communities and can be used to assess the role of functional redundancy across a wide variety of ecosystem processes and environmental factors.

Item Type: Article
Erschienen: 2019
Creators: Feit, Benjamin and Blüthgen, Nico and Traugott, Michael and Jonsson, Mattias
Title: Resilience of ecosystem processes: a new approach shows that functional redundancy of biological control services is reduced by landscape simplification.
Language: English
Abstract:

Functional redundancy can increase the resilience of ecosystem processes by providing insurance against species loss and the effects of abundance fluctuations. However, due to the difficulty of assessing individual species' contributions and the lack of a metric allowing for a quantification of redundancy within communities, few attempts have been made to estimate redundancy for individual ecosystem processes. We present a new method linking interaction metrics with metabolic theory that allows for a quantification of redundancy at the level of ecosystem processes. Using this approach, redundancy in the predation on aphids and other prey by natural enemies across a landscape heterogeneity gradient was estimated. Functional redundancy of predators was high in heterogeneous landscapes, low in homogeneous landscapes and scaled with predator specialisation. Our approach allows quantifying functional redundancy within communities and can be used to assess the role of functional redundancy across a wide variety of ecosystem processes and environmental factors.

Journal or Publication Title: Ecology letters
Volume: 22
Number: 10
Divisions: 10 Department of Biology
10 Department of Biology > Ecological Networks
Date Deposited: 23 Jul 2019 06:05
DOI: 10.1111/ele.13347
Identification Number: pmid:31313484
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