Soil-vegetation relationships on a banded ironstone ‘island’, Carajás Plateau, Brazilian Eastern Amazonia
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Academia Brasileira de Ciências
2015
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| author | Jaquelina A. Nunes |
| author_facet | Jaquelina A. Nunes |
| contents | Soil-vegetation relationships on a banded ironstone ‘island’, Carajás Plateau, Brazilian Eastern Amazonia Jaquelina A. Nunes Carlos E.G.R. Schaefer Walnir G. Ferreira Júnior Andreza V. Neri Guilherme R. Correa Neal J. Enright Multidisciplinaria (Ciencias Naturales y Exactas) canga Carajás laterite Amazon Forest iron formation Vegetation and soil properties of an iron-rich canga (laterite) island on the largest outcrop of banded-iron formation in Serra de Carajás (eastern Amazonia, Brazil) were studied along a topographic gradient (738- 762 m asl), and analyzed to test the hypothesis that soil chemical and physical attributes play a key role in the structure and floristic composition of these plant communities. Soil and vegetation were sampled in eight replicate plots within each of the four vegetation types. Surface (0-10 cm) soil samples from each plot were analyzed for basic cations, N, P and plant species density for all species was recorded. CCA ordination analysis showed a strong separation between forest and non-forest sites on the first axis, and between herbaceous and shrubby campo rupestre on the second axis. The four vegetation types shared few plant species, which was attributed to their distinctive soil environments and filtering of their constituent species by chemical, physical and hydrological constraints. Thus, we can infer that Edaphic (pedological) factors are crucial in explaining the types and distributions of campo rupestre vegetation associated with ferruginous ironstone uplands (Canga) in Carajás, eastern Amazonia, therefore the soil properties are the main drivers of vegetation composition and structure on these ironstone islands. 2015 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32743236017 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.87 |
| format | Artículo científico |
| id | redalyc_32743236017 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Soil-vegetation relationships on a banded ironstone ‘island’, Carajás Plateau, Brazilian Eastern Amazonia Jaquelina A. Nunes Multidisciplinaria (Ciencias Naturales y Exactas) canga Carajás laterite Amazon Forest iron formation Soil-vegetation relationships on a banded ironstone ‘island’, Carajás Plateau, Brazilian Eastern Amazonia Jaquelina A. Nunes Carlos E.G.R. Schaefer Walnir G. Ferreira Júnior Andreza V. Neri Guilherme R. Correa Neal J. Enright Multidisciplinaria (Ciencias Naturales y Exactas) canga Carajás laterite Amazon Forest iron formation Vegetation and soil properties of an iron-rich canga (laterite) island on the largest outcrop of banded-iron formation in Serra de Carajás (eastern Amazonia, Brazil) were studied along a topographic gradient (738- 762 m asl), and analyzed to test the hypothesis that soil chemical and physical attributes play a key role in the structure and floristic composition of these plant communities. Soil and vegetation were sampled in eight replicate plots within each of the four vegetation types. Surface (0-10 cm) soil samples from each plot were analyzed for basic cations, N, P and plant species density for all species was recorded. CCA ordination analysis showed a strong separation between forest and non-forest sites on the first axis, and between herbaceous and shrubby campo rupestre on the second axis. The four vegetation types shared few plant species, which was attributed to their distinctive soil environments and filtering of their constituent species by chemical, physical and hydrological constraints. Thus, we can infer that Edaphic (pedological) factors are crucial in explaining the types and distributions of campo rupestre vegetation associated with ferruginous ironstone uplands (Canga) in Carajás, eastern Amazonia, therefore the soil properties are the main drivers of vegetation composition and structure on these ironstone islands. 2015 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32743236017 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.87 |
| title | Soil-vegetation relationships on a banded ironstone ‘island’, Carajás Plateau, Brazilian Eastern Amazonia |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) canga Carajás laterite Amazon Forest iron formation |
| url | https://www.redalyc.org/articulo.oa?id=32743236017 |