Land use as a filter for species composition in Amazonian secondary forests
Questions: Secondary succession in the tropics can follow alternative pathways. Land-use history is known to engender alternative successional communities, but the underlying mechanisms driving and sustaining divergence remain unclear. In this study we aim to answer the following questions: (1) does...
| Autor principal: | Jakovac, Catarina Conte |
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| Outros Autores: | Bongers, Frans, Kuyper, Thomas W., Mesquita, Rita de Cássia Guimarães, Pena-Claros, Marielos |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Vegetation Science
2020
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https://repositorio.inpa.gov.br/handle/1/15383 |
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oai:repositorio:1-15383 |
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oai:repositorio:1-15383 Land use as a filter for species composition in Amazonian secondary forests Jakovac, Catarina Conte Bongers, Frans Kuyper, Thomas W. Mesquita, Rita de Cássia Guimarães Pena-Claros, Marielos Community Composition Fire History Land Use Landscape Ecology Phosphorus Physicochemical Property Resprouting Secondary Structure Shifting Cultivation Shrub Soil Property Succession Amazonas Brasil Cecropia Vismia Questions: Secondary succession in the tropics can follow alternative pathways. Land-use history is known to engender alternative successional communities, but the underlying mechanisms driving and sustaining divergence remain unclear. In this study we aim to answer the following questions: (1) does previous land use act as a filter for species composition in secondary forests; and (2) what are the relative roles of management practices, soil properties and landscape composition in determining species composition?. Location: Central Amazon, Brazil. Methods: We sampled trees, shrubs and palms (≥1cm diameter) in 38 early secondary forests (5 yr after abandonment) located along gradients of land-use intensity in five shifting cultivation landscapes. We measured the diameter and height of each sampled plant, identified it to species or morpho-species level and checked if it was resprouting or not. At each secondary forest we also collected soil samples for chemical and physical analyses and estimated the amount of old-growth forest surrounding it (landscape composition). Results: We found that previous land-use intensity determined species composition. With increasing land-use intensity, management practices of cut-and-burn and associated reduction in soil quality filtered out seed-dependent species and favoured strong sprouters and species that can cope with low nutrient availability. Landscape composition had a weak effect on species assemblages. We found specific species assemblages and indicator species associated with different levels of previous land-use intensity. As a consequence of these local filters, species α- and β-diversity decreased and therefore early successional communities became more similar to each other. Conclusion: Species composition of successional forests is strongly determined by different land-use intensities. Dispersal limitation has a limited effect on determining the composition of the dominant species. Filtering effects of management practices and soil quality determine the species dominating the canopy at early stages of succession and narrow down the range of species able to colonize and establish. This study highlights how land use shapes successional communities and suggests that alternative successional pathways are determined at early stages of succession. Therefore, accounting for land-use history is crucial to improve the understanding of tropical secondary succession. We present a list of indicator species for different levels of previous land-use intensity that can be used to support conservation and restoration decisions in the Amazon. © 2016 The Authors. Journal of Vegetation Science published by John Wiley & Sons Ltd on behalf of Internation Association of Vegetation Science 2020-05-08T20:36:30Z 2020-05-08T20:36:30Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/15383 10.1111/jvs.12457 en Volume 27, Número 6, Pags. 1104-1116 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Journal of Vegetation Science |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Community Composition Fire History Land Use Landscape Ecology Phosphorus Physicochemical Property Resprouting Secondary Structure Shifting Cultivation Shrub Soil Property Succession Amazonas Brasil Cecropia Vismia |
| spellingShingle |
Community Composition Fire History Land Use Landscape Ecology Phosphorus Physicochemical Property Resprouting Secondary Structure Shifting Cultivation Shrub Soil Property Succession Amazonas Brasil Cecropia Vismia Jakovac, Catarina Conte Land use as a filter for species composition in Amazonian secondary forests |
| topic_facet |
Community Composition Fire History Land Use Landscape Ecology Phosphorus Physicochemical Property Resprouting Secondary Structure Shifting Cultivation Shrub Soil Property Succession Amazonas Brasil Cecropia Vismia |
| description |
Questions: Secondary succession in the tropics can follow alternative pathways. Land-use history is known to engender alternative successional communities, but the underlying mechanisms driving and sustaining divergence remain unclear. In this study we aim to answer the following questions: (1) does previous land use act as a filter for species composition in secondary forests; and (2) what are the relative roles of management practices, soil properties and landscape composition in determining species composition?. Location: Central Amazon, Brazil. Methods: We sampled trees, shrubs and palms (≥1cm diameter) in 38 early secondary forests (5 yr after abandonment) located along gradients of land-use intensity in five shifting cultivation landscapes. We measured the diameter and height of each sampled plant, identified it to species or morpho-species level and checked if it was resprouting or not. At each secondary forest we also collected soil samples for chemical and physical analyses and estimated the amount of old-growth forest surrounding it (landscape composition). Results: We found that previous land-use intensity determined species composition. With increasing land-use intensity, management practices of cut-and-burn and associated reduction in soil quality filtered out seed-dependent species and favoured strong sprouters and species that can cope with low nutrient availability. Landscape composition had a weak effect on species assemblages. We found specific species assemblages and indicator species associated with different levels of previous land-use intensity. As a consequence of these local filters, species α- and β-diversity decreased and therefore early successional communities became more similar to each other. Conclusion: Species composition of successional forests is strongly determined by different land-use intensities. Dispersal limitation has a limited effect on determining the composition of the dominant species. Filtering effects of management practices and soil quality determine the species dominating the canopy at early stages of succession and narrow down the range of species able to colonize and establish. This study highlights how land use shapes successional communities and suggests that alternative successional pathways are determined at early stages of succession. Therefore, accounting for land-use history is crucial to improve the understanding of tropical secondary succession. We present a list of indicator species for different levels of previous land-use intensity that can be used to support conservation and restoration decisions in the Amazon. © 2016 The Authors. Journal of Vegetation Science published by John Wiley & Sons Ltd on behalf of Internation Association of Vegetation Science |
| format |
Artigo |
| author |
Jakovac, Catarina Conte |
| author2 |
Bongers, Frans Kuyper, Thomas W. Mesquita, Rita de Cássia Guimarães Pena-Claros, Marielos |
| author2Str |
Bongers, Frans Kuyper, Thomas W. Mesquita, Rita de Cássia Guimarães Pena-Claros, Marielos |
| title |
Land use as a filter for species composition in Amazonian secondary forests |
| title_short |
Land use as a filter for species composition in Amazonian secondary forests |
| title_full |
Land use as a filter for species composition in Amazonian secondary forests |
| title_fullStr |
Land use as a filter for species composition in Amazonian secondary forests |
| title_full_unstemmed |
Land use as a filter for species composition in Amazonian secondary forests |
| title_sort |
land use as a filter for species composition in amazonian secondary forests |
| publisher |
Journal of Vegetation Science |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/15383 |
| _version_ |
1787144884177600512 |
| score |
11.653393 |