Fragmented tropical forests lose mutualistic plant–animal interactions

Show simple item record Marjakangas, Emma-Liina Abrego, Nerea Grøtan, Vidar de Lima, Renato A. F. Bello, Carolina Bovendorp, Ricardo S. Culot, Laurence Hasui, Érica Lima, Fernando Muylaert, Renata Lara Niebuhr, Bernardo Brandão Oliveira, Alexandre A. Pereira, Lucas Augusto Prado, Paulo I. Stevens, Richard D. Vancine, Maurício Humberto Ribeiro, Milton Cezar Galetti, Mauro Ovaskainen, Otso 2020-02-06T08:45:02Z 2020-02-06T08:45:02Z 2020-02
dc.identifier.citation Marjakangas , E-L , Abrego , N , Grøtan , V , de Lima , R A F , Bello , C , Bovendorp , R S , Culot , L , Hasui , É , Lima , F , Muylaert , R L , Niebuhr , B B , Oliveira , A A , Pereira , L A , Prado , P I , Stevens , R D , Vancine , M H , Ribeiro , M C , Galetti , M & Ovaskainen , O 2020 , ' Fragmented tropical forests lose mutualistic plant–animal interactions ' , Diversity and Distributions , vol. 26 , no. 2 , pp. 154-168 .
dc.identifier.other PURE: 128220523
dc.identifier.other PURE UUID: d4c685dc-2bdd-43d3-930c-644e74bd8a7d
dc.identifier.other RIS: urn:628449FB4FB823A4EA456F941EFD6FCD
dc.identifier.other WOS: 000496700000001
dc.description.abstract Abstract Aim Forest fragmentation is among the principal causes of global biodiversity loss, yet how it affects mutualistic interactions between plants and animals at large spatial scale is poorly understood. In particular, tropical forest regeneration depends on animal-mediated seed dispersal, but the seed-dispersing animals face rapid decline due to forest fragmentation and defaunation. Here, we assess how fragmentation influences the pairwise interactions between 407 seed disperser and 1,424 tree species in a highly fragmented biodiversity hotspot. Location Atlantic Forest, South America. Methods We predicted interaction networks in 912 sites covering the entire biome by combining verified interaction data with co-occurrence probabilities obtained from a spatially explicit joint species distribution model. We identified keystone seed dispersers by computing a species-specific keystone index and by selecting those species belonging to the top 5% quantile. Results We show that forest fragmentation affects seed dispersal interactions negatively, and the decreased area of functionally connected forest, rather than increased edge effects, is the main driver behind the loss of interactions. Both the seed disperser availability for the local tree communities and in particular the proportion of interactions provided by keystone seed dispersers decline with increasing degree of fragmentation. Importantly, just 21 keystone species provided >40% of all interactions. The numbers of interactions provided by keystone and non-keystone species, however, were equally negatively affected by fragmentation, suggesting that seed dispersal interactions may not be rewired under strong fragmentation effects. Conclusions We highlight the importance of understanding the fragmentation-induced compositional shifts in seed disperser communities as they may lead to lagged and multiplicative effects on tree communities. Our results illustrate the utility of model-based prediction of interaction networks as well as model-based identification of keystone species as a tool for prioritizing conservation efforts. Similar modelling approaches could be applied to other threatened ecosystems and interaction types globally. en
dc.format.extent 15
dc.language.iso eng
dc.relation.ispartof Diversity and Distributions
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 1181 Ecology, evolutionary biology
dc.subject 4112 Forestry
dc.subject Atlantic Forest
dc.subject co-occurrence
dc.subject ecological network
dc.subject fragmentation
dc.subject frugivory
dc.subject Hierarchical Modelling of Species Communities
dc.subject joint species distribution model
dc.subject keystone species
dc.subject seed dispersal
dc.subject zoochory
dc.subject NETWORKS
dc.subject DATA SET
dc.subject POLLINATION
dc.title Fragmented tropical forests lose mutualistic plant–animal interactions en
dc.type Article
dc.contributor.organization Department of Agricultural Sciences
dc.contributor.organization Research Centre for Ecological Change
dc.contributor.organization Plant Production Sciences
dc.contributor.organization Spatial Foodweb Ecology Group
dc.contributor.organization Otso Ovaskainen / Principal Investigator
dc.contributor.organization Organismal and Evolutionary Biology Research Programme
dc.description.reviewstatus Peer reviewed
dc.relation.issn 1366-9516
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
Marjakangas_et_ ... sity_and_Distributions.pdf 2.819Mb PDF View/Open

This item appears in the following Collection(s)

Show simple item record