Cloud forest bird responses to unusually severe storm damage
In 1998, storms related to Hurricane Isis caused extensive gaps in the cloud forest of El Triunfo Biosphere Reserve in Chiapas, Mexico, where severe storms are infrequent. We examined how this disturbance affected bird species composition. Species richness and composition were similar both between pre- and post-disturbance forest and between newly created gaps and plots that remained forested after the hurricane. However, differences in response guilds were greater between pre- and post-disturbance plots than between forest plots with gaps after disturbance. Granivorous, omnivorous, and terrestrial species were more abundant before the hurricane, whereas insectivorous, midstory, and generalist foragers were more abundant after the hurricane. In addition, species with high sensitivity to disturbance were more abundant in the pre-disturbance forest, while low sensitivity species were more abundant after disturbance.
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KOHA-OAI-ECOSUR:403292024-07-10T11:26:31ZCloud forest bird responses to unusually severe storm damage Tejeda Cruz, César Doctor autor/a 14266 Sutherland, Williams J. autor/a textengIn 1998, storms related to Hurricane Isis caused extensive gaps in the cloud forest of El Triunfo Biosphere Reserve in Chiapas, Mexico, where severe storms are infrequent. We examined how this disturbance affected bird species composition. Species richness and composition were similar both between pre- and post-disturbance forest and between newly created gaps and plots that remained forested after the hurricane. However, differences in response guilds were greater between pre- and post-disturbance plots than between forest plots with gaps after disturbance. Granivorous, omnivorous, and terrestrial species were more abundant before the hurricane, whereas insectivorous, midstory, and generalist foragers were more abundant after the hurricane. In addition, species with high sensitivity to disturbance were more abundant in the pre-disturbance forest, while low sensitivity species were more abundant after disturbance.In the post-disturbance forest, insectivorous species were most abundant in gaps and terrestrial-canopy foragers were most abundant in forest plots. Permanently open areas had significantly lower species richness, but had lowland generalist and second-growth species not present in the cloud forest. Results suggest that changes in species composition were not limited to the newly created gaps, but also affected the whole forest. The decline of high sensitivity species after disturbance supports the hypothesis that disturbance negatively affects specialists and benefits generalist species. Although there is evidence that natural communities tend to return to pre-disturbance conditions, changes in community structure could be aggravated if recurrent hurricanes occur before succession takes place.In 1998, storms related to Hurricane Isis caused extensive gaps in the cloud forest of El Triunfo Biosphere Reserve in Chiapas, Mexico, where severe storms are infrequent. We examined how this disturbance affected bird species composition. Species richness and composition were similar both between pre- and post-disturbance forest and between newly created gaps and plots that remained forested after the hurricane. However, differences in response guilds were greater between pre- and post-disturbance plots than between forest plots with gaps after disturbance. Granivorous, omnivorous, and terrestrial species were more abundant before the hurricane, whereas insectivorous, midstory, and generalist foragers were more abundant after the hurricane. In addition, species with high sensitivity to disturbance were more abundant in the pre-disturbance forest, while low sensitivity species were more abundant after disturbance.In the post-disturbance forest, insectivorous species were most abundant in gaps and terrestrial-canopy foragers were most abundant in forest plots. Permanently open areas had significantly lower species richness, but had lowland generalist and second-growth species not present in the cloud forest. Results suggest that changes in species composition were not limited to the newly created gaps, but also affected the whole forest. The decline of high sensitivity species after disturbance supports the hypothesis that disturbance negatively affects specialists and benefits generalist species. Although there is evidence that natural communities tend to return to pre-disturbance conditions, changes in community structure could be aggravated if recurrent hurricanes occur before succession takes place.Desastres naturalesBosque de nieblaHuracán Isis, 1998AvesArtfrosurBiotropica |
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Desastres naturales Bosque de niebla Huracán Isis, 1998 Aves Artfrosur Desastres naturales Bosque de niebla Huracán Isis, 1998 Aves Artfrosur |
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Desastres naturales Bosque de niebla Huracán Isis, 1998 Aves Artfrosur Desastres naturales Bosque de niebla Huracán Isis, 1998 Aves Artfrosur Tejeda Cruz, César Doctor autor/a 14266 Sutherland, Williams J. autor/a Cloud forest bird responses to unusually severe storm damage |
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In 1998, storms related to Hurricane Isis caused extensive gaps in the cloud forest of El Triunfo Biosphere Reserve in Chiapas, Mexico, where severe storms are infrequent. We examined how this disturbance affected bird species composition. Species richness and composition were similar both between pre- and post-disturbance forest and between newly created gaps and plots that remained forested after the hurricane. However, differences in response guilds were greater between pre- and post-disturbance plots than between forest plots with gaps after disturbance. Granivorous, omnivorous, and terrestrial species were more abundant before the hurricane, whereas insectivorous, midstory, and generalist foragers were more abundant after the hurricane. In addition, species with high sensitivity to disturbance were more abundant in the pre-disturbance forest, while low sensitivity species were more abundant after disturbance. |
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Desastres naturales Bosque de niebla Huracán Isis, 1998 Aves Artfrosur |
author |
Tejeda Cruz, César Doctor autor/a 14266 Sutherland, Williams J. autor/a |
author_facet |
Tejeda Cruz, César Doctor autor/a 14266 Sutherland, Williams J. autor/a |
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Tejeda Cruz, César Doctor autor/a 14266 |
title |
Cloud forest bird responses to unusually severe storm damage |
title_short |
Cloud forest bird responses to unusually severe storm damage |
title_full |
Cloud forest bird responses to unusually severe storm damage |
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Cloud forest bird responses to unusually severe storm damage |
title_full_unstemmed |
Cloud forest bird responses to unusually severe storm damage |
title_sort |
cloud forest bird responses to unusually severe storm damage |
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AT tejedacruzcesardoctorautora14266 cloudforestbirdresponsestounusuallyseverestormdamage AT sutherlandwilliamsjautora cloudforestbirdresponsestounusuallyseverestormdamage |
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1806027808742309888 |