Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions
International audience Background: Vertebrate-mediated seed dispersal is probably the main long distance dispersal mode. Through endozoochory, large mammals act as mobile links between habitats within and among forest patches. Along with other factors, their feeding regimes do affect their contribut...
Published in: | BMC Ecology |
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Online Access: | https://hal.inrae.fr/hal-03185148 https://doi.org/10.1186/s12898-020-00317-3 |
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ftunivnantes:oai:HAL:hal-03185148v1 2023-05-15T18:42:00+02:00 Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions Karimi, Sorour Hemami, Mahmoud-Reza Tarkesh Esfahani, Mostafa Baltzinger, Christophe Isfahan University of Technology Ecosystèmes forestiers (UR EFNO) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) School of Life Sciences, University of KwaZulu- Natal, Durban, South Africa 2020-12 https://hal.inrae.fr/hal-03185148 https://doi.org/10.1186/s12898-020-00317-3 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1186/s12898-020-00317-3 info:eu-repo/semantics/altIdentifier/pmid/32867734 hal-03185148 https://hal.inrae.fr/hal-03185148 doi:10.1186/s12898-020-00317-3 PUBMED: 32867734 PUBMEDCENTRAL: PMC7457502 WOS: 000566164500001 ISSN: 1472-6785 EISSN: 1472-6785 BMC Ecology https://hal.inrae.fr/hal-03185148 BMC Ecology, 2020, 20 (1), 14 p. ⟨10.1186/s12898-020-00317-3⟩ VASCULAR PLANTS Capreolus capreolus Cervus elaphus Ursus arctos Sus scrofa Plant-animal interactions Germination conditions Seed dispersal BROWN BEARS LARGE MAMMALS URSUS-ARCTOS DIET ENDOZOOCHORIE DISSEMINATION DES GRAINES Iran Steppe [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1186/s12898-020-00317-3 2023-03-08T03:08:56Z International audience Background: Vertebrate-mediated seed dispersal is probably the main long distance dispersal mode. Through endozoochory, large mammals act as mobile links between habitats within and among forest patches. Along with other factors, their feeding regimes do affect their contribution as dispersal vectors. We conducted a cross-species comparative experiment involving two herbivores, red deer and roe deer; and two opportunistic omnivores, wild boar and brown bear, all occurring in the forest and steppe-forest ecotone habitats of the south-eastern Caspian region. We compared their role as endozoochorous seed dispersal agents by monitoring seedling emergence in their dungs under greenhouse and natural conditions. Results: In total, 3078 seedlings, corresponding to 136 plant taxa sprouted from 445 paired dung sub-samples, under greenhouse and natural conditions. Only 336 seedlings, corresponding to 36 plant taxa, emerged under natural conditions, among which five taxa did not appear under greenhouse conditions. Graminoids and forbs composed 91% of the seedlings in the greenhouse whereas shrubs were more abundant under natural conditions, representing 55% of the emerged seedlings. Under greenhouse conditions, first red deer and then wild boar dispersed more species than the other two mammals, while under natural conditions brown bear was the most effective vector. We observed remarkably higher species richness and seedling abundance per dung sub-sample under buffered greenhouse conditions than we did under natural conditions. Conclusions: The four sympatric mammals studied provided different seed dispersal services, both in terms of seedling abundance and species richness and may therefore be regarded as complementary. Our results highlight a positive bias when only considering germination under buffered greenhouse conditions. This must be taken into account when planning management options to benefit plant biodiversity based on the dispersal services concluded from greenhouse experiments. Article in Journal/Newspaper Ursus arctos Université de Nantes: HAL-UNIV-NANTES BMC Ecology 20 1 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
VASCULAR PLANTS Capreolus capreolus Cervus elaphus Ursus arctos Sus scrofa Plant-animal interactions Germination conditions Seed dispersal BROWN BEARS LARGE MAMMALS URSUS-ARCTOS DIET ENDOZOOCHORIE DISSEMINATION DES GRAINES Iran Steppe [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
VASCULAR PLANTS Capreolus capreolus Cervus elaphus Ursus arctos Sus scrofa Plant-animal interactions Germination conditions Seed dispersal BROWN BEARS LARGE MAMMALS URSUS-ARCTOS DIET ENDOZOOCHORIE DISSEMINATION DES GRAINES Iran Steppe [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology Karimi, Sorour Hemami, Mahmoud-Reza Tarkesh Esfahani, Mostafa Baltzinger, Christophe Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
topic_facet |
VASCULAR PLANTS Capreolus capreolus Cervus elaphus Ursus arctos Sus scrofa Plant-animal interactions Germination conditions Seed dispersal BROWN BEARS LARGE MAMMALS URSUS-ARCTOS DIET ENDOZOOCHORIE DISSEMINATION DES GRAINES Iran Steppe [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Background: Vertebrate-mediated seed dispersal is probably the main long distance dispersal mode. Through endozoochory, large mammals act as mobile links between habitats within and among forest patches. Along with other factors, their feeding regimes do affect their contribution as dispersal vectors. We conducted a cross-species comparative experiment involving two herbivores, red deer and roe deer; and two opportunistic omnivores, wild boar and brown bear, all occurring in the forest and steppe-forest ecotone habitats of the south-eastern Caspian region. We compared their role as endozoochorous seed dispersal agents by monitoring seedling emergence in their dungs under greenhouse and natural conditions. Results: In total, 3078 seedlings, corresponding to 136 plant taxa sprouted from 445 paired dung sub-samples, under greenhouse and natural conditions. Only 336 seedlings, corresponding to 36 plant taxa, emerged under natural conditions, among which five taxa did not appear under greenhouse conditions. Graminoids and forbs composed 91% of the seedlings in the greenhouse whereas shrubs were more abundant under natural conditions, representing 55% of the emerged seedlings. Under greenhouse conditions, first red deer and then wild boar dispersed more species than the other two mammals, while under natural conditions brown bear was the most effective vector. We observed remarkably higher species richness and seedling abundance per dung sub-sample under buffered greenhouse conditions than we did under natural conditions. Conclusions: The four sympatric mammals studied provided different seed dispersal services, both in terms of seedling abundance and species richness and may therefore be regarded as complementary. Our results highlight a positive bias when only considering germination under buffered greenhouse conditions. This must be taken into account when planning management options to benefit plant biodiversity based on the dispersal services concluded from greenhouse experiments. |
author2 |
Isfahan University of Technology Ecosystèmes forestiers (UR EFNO) Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) School of Life Sciences, University of KwaZulu- Natal, Durban, South Africa |
format |
Article in Journal/Newspaper |
author |
Karimi, Sorour Hemami, Mahmoud-Reza Tarkesh Esfahani, Mostafa Baltzinger, Christophe |
author_facet |
Karimi, Sorour Hemami, Mahmoud-Reza Tarkesh Esfahani, Mostafa Baltzinger, Christophe |
author_sort |
Karimi, Sorour |
title |
Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
title_short |
Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
title_full |
Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
title_fullStr |
Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
title_full_unstemmed |
Endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
title_sort |
endozoochorous dispersal by herbivores and omnivores is mediated by germination conditions |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.inrae.fr/hal-03185148 https://doi.org/10.1186/s12898-020-00317-3 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_source |
ISSN: 1472-6785 EISSN: 1472-6785 BMC Ecology https://hal.inrae.fr/hal-03185148 BMC Ecology, 2020, 20 (1), 14 p. ⟨10.1186/s12898-020-00317-3⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1186/s12898-020-00317-3 info:eu-repo/semantics/altIdentifier/pmid/32867734 hal-03185148 https://hal.inrae.fr/hal-03185148 doi:10.1186/s12898-020-00317-3 PUBMED: 32867734 PUBMEDCENTRAL: PMC7457502 WOS: 000566164500001 |
op_doi |
https://doi.org/10.1186/s12898-020-00317-3 |
container_title |
BMC Ecology |
container_volume |
20 |
container_issue |
1 |
_version_ |
1766231587669671936 |