Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana
Hunting impacts tropical vertebrate populations, causing declines of species that function as seed dispersers and predators, or that browse seedlings and saplings. Whether and how the resulting reductions in seed dispersal, seed predation, and browsing translate to changes in the tree composition is poorly understood. Here, we assess the effect of defaunation on the functional composition of communities of tree recruits in tropical rainforests in French Guiana. We selected eight sites along a gradient of defaunation, caused by differences in hunting pressure, in otherwise intact old-growth forests in French Guiana. We measured shifts in functional composition by comparing leaf and fruit traits and wood density between tree recruits (up to 5 cm diameter at breast height) and adults, and tested whether and how these compositional shifts related to defaunation. We found a positive relationship with defaunation for shifts in specific leaf area, a negative relationship for shifts of leaf toughness and wood density, and a weak relationship for shifts in fruit traits. Our results suggest that the loss of vertebrates affects ecological processes such as seed dispersal and browsing, of which browsing remains understudied. Even though these changes sometimes seem minor, together they result in major shifts in forest composition. These changes have long-term ramifications that may alter forest dynamics for generations.
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Subjects: | F40 - Écologie végétale, F50 - Anatomie et morphologie des plantes, P01 - Conservation de la nature et ressources foncières, forêt tropicale humide, dynamique des populations, forêt tropicale, bois, chasse, http://aims.fao.org/aos/agrovoc/c_7976, http://aims.fao.org/aos/agrovoc/c_6111, http://aims.fao.org/aos/agrovoc/c_24904, http://aims.fao.org/aos/agrovoc/c_8421, http://aims.fao.org/aos/agrovoc/c_3697, http://aims.fao.org/aos/agrovoc/c_3093, http://aims.fao.org/aos/agrovoc/c_3081, |
Online Access: | http://agritrop.cirad.fr/605482/ http://agritrop.cirad.fr/605482/1/605482.pdf |
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dig-cirad-fr-6054822024-01-29T06:05:12Z http://agritrop.cirad.fr/605482/ http://agritrop.cirad.fr/605482/ Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana. Vaessen Rens W., Jansen Patrick A., Richard-Hansen Cécile, Boot René, Denis Thomas, Derroire Géraldine, Petronelli Pascal, de Vries Jesse S., Barry Kathryn E., Ter Steege Hans, van Kuijk Marijke. 2023. Ecology, 104 (1):e3872, 11 p.https://doi.org/10.1002/ecy.3872 <https://doi.org/10.1002/ecy.3872> Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana Vaessen, Rens W. Jansen, Patrick A. Richard-Hansen, Cécile Boot, René Denis, Thomas Derroire, Géraldine Petronelli, Pascal de Vries, Jesse S. Barry, Kathryn E. Ter Steege, Hans van Kuijk, Marijke eng 2023 Ecology F40 - Écologie végétale F50 - Anatomie et morphologie des plantes P01 - Conservation de la nature et ressources foncières forêt tropicale humide dynamique des populations forêt tropicale bois chasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_3697 Guyane française France http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 Hunting impacts tropical vertebrate populations, causing declines of species that function as seed dispersers and predators, or that browse seedlings and saplings. Whether and how the resulting reductions in seed dispersal, seed predation, and browsing translate to changes in the tree composition is poorly understood. Here, we assess the effect of defaunation on the functional composition of communities of tree recruits in tropical rainforests in French Guiana. We selected eight sites along a gradient of defaunation, caused by differences in hunting pressure, in otherwise intact old-growth forests in French Guiana. We measured shifts in functional composition by comparing leaf and fruit traits and wood density between tree recruits (up to 5 cm diameter at breast height) and adults, and tested whether and how these compositional shifts related to defaunation. We found a positive relationship with defaunation for shifts in specific leaf area, a negative relationship for shifts of leaf toughness and wood density, and a weak relationship for shifts in fruit traits. Our results suggest that the loss of vertebrates affects ecological processes such as seed dispersal and browsing, of which browsing remains understudied. Even though these changes sometimes seem minor, together they result in major shifts in forest composition. These changes have long-term ramifications that may alter forest dynamics for generations. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/605482/1/605482.pdf text cc_by_nc_nd info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/4.0/ https://doi.org/10.1002/ecy.3872 10.1002/ecy.3872 info:eu-repo/semantics/altIdentifier/doi/10.1002/ecy.3872 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/ecy.3872 info:eu-repo/semantics/dataset/purl/https://doi.org/10.34894/QMYHNH info:eu-repo/semantics/dataset/purl/https://bioportal.naturalis.nl/ info:eu-repo/grantAgreement///ANR-10-LABX-2501//(FRA) CEnter of the study of Biodiversity in Amazonia/CEBA info:eu-repo/grantAgreement///ANR-11-INBS-0001//(FRA) ANAEE-Services/ANAEE-FR |
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F40 - Écologie végétale F50 - Anatomie et morphologie des plantes P01 - Conservation de la nature et ressources foncières forêt tropicale humide dynamique des populations forêt tropicale bois chasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_3697 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 F40 - Écologie végétale F50 - Anatomie et morphologie des plantes P01 - Conservation de la nature et ressources foncières forêt tropicale humide dynamique des populations forêt tropicale bois chasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_3697 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 |
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F40 - Écologie végétale F50 - Anatomie et morphologie des plantes P01 - Conservation de la nature et ressources foncières forêt tropicale humide dynamique des populations forêt tropicale bois chasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_3697 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 F40 - Écologie végétale F50 - Anatomie et morphologie des plantes P01 - Conservation de la nature et ressources foncières forêt tropicale humide dynamique des populations forêt tropicale bois chasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_3697 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 Vaessen, Rens W. Jansen, Patrick A. Richard-Hansen, Cécile Boot, René Denis, Thomas Derroire, Géraldine Petronelli, Pascal de Vries, Jesse S. Barry, Kathryn E. Ter Steege, Hans van Kuijk, Marijke Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana |
description |
Hunting impacts tropical vertebrate populations, causing declines of species that function as seed dispersers and predators, or that browse seedlings and saplings. Whether and how the resulting reductions in seed dispersal, seed predation, and browsing translate to changes in the tree composition is poorly understood. Here, we assess the effect of defaunation on the functional composition of communities of tree recruits in tropical rainforests in French Guiana. We selected eight sites along a gradient of defaunation, caused by differences in hunting pressure, in otherwise intact old-growth forests in French Guiana. We measured shifts in functional composition by comparing leaf and fruit traits and wood density between tree recruits (up to 5 cm diameter at breast height) and adults, and tested whether and how these compositional shifts related to defaunation. We found a positive relationship with defaunation for shifts in specific leaf area, a negative relationship for shifts of leaf toughness and wood density, and a weak relationship for shifts in fruit traits. Our results suggest that the loss of vertebrates affects ecological processes such as seed dispersal and browsing, of which browsing remains understudied. Even though these changes sometimes seem minor, together they result in major shifts in forest composition. These changes have long-term ramifications that may alter forest dynamics for generations. |
format |
article |
topic_facet |
F40 - Écologie végétale F50 - Anatomie et morphologie des plantes P01 - Conservation de la nature et ressources foncières forêt tropicale humide dynamique des populations forêt tropicale bois chasse http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_8421 http://aims.fao.org/aos/agrovoc/c_3697 http://aims.fao.org/aos/agrovoc/c_3093 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Vaessen, Rens W. Jansen, Patrick A. Richard-Hansen, Cécile Boot, René Denis, Thomas Derroire, Géraldine Petronelli, Pascal de Vries, Jesse S. Barry, Kathryn E. Ter Steege, Hans van Kuijk, Marijke |
author_facet |
Vaessen, Rens W. Jansen, Patrick A. Richard-Hansen, Cécile Boot, René Denis, Thomas Derroire, Géraldine Petronelli, Pascal de Vries, Jesse S. Barry, Kathryn E. Ter Steege, Hans van Kuijk, Marijke |
author_sort |
Vaessen, Rens W. |
title |
Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana |
title_short |
Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana |
title_full |
Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana |
title_fullStr |
Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana |
title_full_unstemmed |
Defaunation changes leaf trait composition of recruit communities in tropical forests in French Guiana |
title_sort |
defaunation changes leaf trait composition of recruit communities in tropical forests in french guiana |
url |
http://agritrop.cirad.fr/605482/ http://agritrop.cirad.fr/605482/1/605482.pdf |
work_keys_str_mv |
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