Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.

Grassy biomes such as savannas are maintained by an interacting suite of ecosystem processes from herbivory to rainfall to fire. Many studies have examined the impacts of large mammalian herbivores on herbaceous plant communities, but few of these studies have been conducted in humid, fertile savann...

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Autores principales:	Arjun B Potter, Muhammad Ali Imron, Satyawan Pudyatmoko, Matthew C Hutchinson
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5e435eab872b420e910510767297a95d
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spelling	oai:doaj.org-article:5e435eab872b420e910510767297a95d2021-12-02T20:04:55ZShort-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.1932-620310.1371/journal.pone.0255056https://doaj.org/article/5e435eab872b420e910510767297a95d2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0255056https://doaj.org/toc/1932-6203Grassy biomes such as savannas are maintained by an interacting suite of ecosystem processes from herbivory to rainfall to fire. Many studies have examined the impacts of large mammalian herbivores on herbaceous plant communities, but few of these studies have been conducted in humid, fertile savannas. We present the findings of a short-term experiment that investigated the effects of herbivory in a fertile, humid, and semi-managed savanna. We erected large-herbivore exclosures in Alas Purwo National Park, Java, Indonesia where rainfall is high and fire is suppressed to test how herbivores impact plant community development across the growing season. Where large mammalian herbivores were excluded, herbaceous plant communities contained more non-grasses and were less similar; diverging in their composition as the growing season progressed. Effects of herbivore exclusion on plant species richness, evenness, and biomass per quadrat were generally weak. Notably, however, two weedy plant species (one native, Imperata cylindrica and one introduced, Senna cf. tora) appeared to benefit most from herbivore release. Our results suggest that heavy grazing pressure by native large mammalian herbivores controlled the composition of the herbaceous plant community. Moreover, exclusion of large mammalian herbivores led to divergence in the plant species composition of exclosures; compositional dissimilarity between herbivore-exclusion plots was higher than between plots exposed to large mammalian herbivores. Our findings suggest that, at this high-rainfall site, large mammalian herbivores constrained the developmental trajectory of plant communities across the growing season.Arjun B PotterMuhammad Ali ImronSatyawan PudyatmokoMatthew C HutchinsonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0255056 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Arjun B Potter Muhammad Ali Imron Satyawan Pudyatmoko Matthew C Hutchinson Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.
description	Grassy biomes such as savannas are maintained by an interacting suite of ecosystem processes from herbivory to rainfall to fire. Many studies have examined the impacts of large mammalian herbivores on herbaceous plant communities, but few of these studies have been conducted in humid, fertile savannas. We present the findings of a short-term experiment that investigated the effects of herbivory in a fertile, humid, and semi-managed savanna. We erected large-herbivore exclosures in Alas Purwo National Park, Java, Indonesia where rainfall is high and fire is suppressed to test how herbivores impact plant community development across the growing season. Where large mammalian herbivores were excluded, herbaceous plant communities contained more non-grasses and were less similar; diverging in their composition as the growing season progressed. Effects of herbivore exclusion on plant species richness, evenness, and biomass per quadrat were generally weak. Notably, however, two weedy plant species (one native, Imperata cylindrica and one introduced, Senna cf. tora) appeared to benefit most from herbivore release. Our results suggest that heavy grazing pressure by native large mammalian herbivores controlled the composition of the herbaceous plant community. Moreover, exclusion of large mammalian herbivores led to divergence in the plant species composition of exclosures; compositional dissimilarity between herbivore-exclusion plots was higher than between plots exposed to large mammalian herbivores. Our findings suggest that, at this high-rainfall site, large mammalian herbivores constrained the developmental trajectory of plant communities across the growing season.
format	article
author	Arjun B Potter Muhammad Ali Imron Satyawan Pudyatmoko Matthew C Hutchinson
author_facet	Arjun B Potter Muhammad Ali Imron Satyawan Pudyatmoko Matthew C Hutchinson
author_sort	Arjun B Potter
title	Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.
title_short	Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.
title_full	Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.
title_fullStr	Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.
title_full_unstemmed	Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.
title_sort	short-term plant-community responses to large mammalian herbivore exclusion in a rewilded javan savanna.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/5e435eab872b420e910510767297a95d
work_keys_str_mv	AT arjunbpotter shorttermplantcommunityresponsestolargemammalianherbivoreexclusioninarewildedjavansavanna AT muhammadaliimron shorttermplantcommunityresponsestolargemammalianherbivoreexclusioninarewildedjavansavanna AT satyawanpudyatmoko shorttermplantcommunityresponsestolargemammalianherbivoreexclusioninarewildedjavansavanna AT matthewchutchinson shorttermplantcommunityresponsestolargemammalianherbivoreexclusioninarewildedjavansavanna
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Short-term plant-community responses to large mammalian herbivore exclusion in a rewilded Javan savanna.

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