2026-06-27T12:27:25Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/77032023-08-04T02:28:02Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Fedriani, J. M.
author
Ayllón, Daniel
author
Wiegand, T.
author
Grimm, Volker
2023-06-17T08:57:27Z
2023-06-17T08:57:27Z
2020-06-03
1600-0587
10.1111/ecog.05047
https://hdl.handle.net/20.500.14352/7703
https://onlinelibrary.wiley.com/doi/epdf/10.1111/ecog.05047
Contemporary defaunation has profound ecological consequences ranging from local or even global co-extinctions of interacting species to the loss of ecosystem functions and services critical for humanity. Other components of global change (climate change, introduced pests, land use changes) are also harming ecosystem functioning by augmenting tree mortality worldwide. Defaunation and increased tree mortality often coincide in many human-altered ecosystems but whether they interact, leading to non-additive effects on ecosystem functioning, remains largely unknown. However, under some ecological circumstances, the decline or extirpation of one species due to defaunation can be neutralized by increases in the abundance of some functionally similar species (i.e. ‘density compensation’). We combined long-term field data with individual-based modelling to investigate the potential interactive effects of seed disperser loss, increased tree mortality and density compensation on seed dispersal in a heterogeneous landscape. Our simulation experiments showed that both stressors markedly limit not only the quantity of seed dispersal but also its quality since the impact on seed dispersal strongly varied among habitat types that differ strikingly in suitability for tree establishment. Density compensation had a marked positive effect on seed dispersal which, however, was largely limited under increased tree mortality. The combined negative effects of defaunation and increased tree mortality on seed dispersal
were lower than the expected additive effect. This highlights the need to account
for the joint operation of multiple stressors to accurately predict the impacts of global change on the link between biodiversity and ecosystem functioning.
eng
Atribución 3.0 España
Intertwined effects of defaunation, increased tree mortality and density compensation on seed dispersal
journal article
URL
https://docta.ucm.es/bitstreams/655f99fa-b051-4b31-aacf-aaedacc4862b/download
File
MD5
5f446b553110d00e52e13114641dd31c
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application/pdf
Ayllon-DBEE-Intertwined-effects.pdf
URL
https://docta.ucm.es/bitstreams/1ac15db4-6368-445a-a015-64fe46763891/download
File
MD5
ef84747bc9f3e59aae32a8643ca45a96
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text/plain
Ayllon-DBEE-Intertwined-effects.pdf.txt