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ECOSYSTEM RESPONSES TO EXOTIC EARTHWORM INVASION IN NORTHERN NORTH AMERICAN FORESTS

ECOSYSTEM RESPONSES TO EXOTIC EARTHWORM INVASION IN NORTHERN NORTH AMERICAN FORESTS

Objective

Earth is experiencing substantial biodiversity losses at the global scale, while both species gains and losses are occurring locally and regionally. Nonrandom changes in species distributions could profoundly influence ecosystem functions and services. However, few experimental tests have examined the influences of invasive ecosystem engineers, which can have disproportionally strong impacts on native ecosystems. Invasive earthworms are a prime example of ecosystem engineers that influence many ecosystems around the world. In particular, European earthworms invading northern North American forests may cause simultaneous species gains and losses with significant consequences for essential ecosystem processes like nutrient cycling and crucial services like carbon sequestration. Using a synthetic combination of field observations, field experiments, lab experiments, and meta-analyses, the proposed work will be the first systematic examination of earthworm effects on relationships between plant communities, soil food webs, and ecosystem processes. Further, effects of a changing climate on the spread and consequences of earthworm invasion will be investigated. Meta-analyses will be used to test if earthworms cause invasion waves, invasion meltdowns, habitat homogenization, and ecosystem state shifts. Global data will be synthesized to test if the relative magnitude of effects differ from place to place depending on the functional dissimilarity between native soil fauna and exotic earthworms. Moving from local to global scale, the present proposal examines the influence of earthworm invasions on biodiversity–ecosystem functioning relationships from an aboveground–belowground perspective. This approach is highly innovative as it utilizes exotic earthworms as an exciting model system that links invasion biology with trait-based community ecology, global change research, and ecosystem ecology, pioneering a new generation of biodiversity–ecosystem function research.
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Host institution

UNIVERSITAET LEIPZIG

Address

Ritterstrasse 26
04109 Leipzig

Germany

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 1 498 620

Beneficiaries (1)

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UNIVERSITAET LEIPZIG

Germany

EU Contribution

€ 1 498 620

Project information

Grant agreement ID: 677232

Status

Ongoing project

  • Start date

    1 March 2016

  • End date

    28 February 2021

Funded under:

H2020-EU.1.1.

  • Overall budget:

    € 1 498 620

  • EU contribution

    € 1 498 620

Hosted by:

UNIVERSITAET LEIPZIG

Germany