Last millennium environmental changes and climate inferences in the Southeastern Atlantic forest, Brazil
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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2010
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| author | Luiz C.R. Pessenda |
| author_facet | Luiz C.R. Pessenda |
| contents | Last millennium environmental changes and climate inferences in the Southeastern Atlantic forest, Brazil Luiz C.R. Pessenda Soraya E.M.G. Saia Susy E.M. Gouveia Marie-Pierre Ledru Abdelfettah Sifeddine Paula G.C. Amaral José A. Bendassolli Multidisciplinaria (Ciencias Naturales y Exactas) pollen Little Ice Age Atlantic Forest last millennium C and N isotopes This study presents paleoenvironmental data based on pollen, elemental and isotopic compositions of organic matter (TOC, N, d13C and d15N) and 14C dating of 170 cm lake sediment record. Samplings have been made in Lagoa Grande at Parque Estadual Turístico do Alto Ribeira - PETAR, Southern São Paulo State, Southeastern Brazil. The variations in relative frequencies (in percentage) of arboreal pollen along the core range between 40 and 80%. The d13C values ranged from -23 to -30 and C/N of ~10 to 15, indicating the contribution of terrestrial C3 plants and algae in the sediment organic matter. The d15N results presented values from 3 to 4.5, also suggesting a mixture of algae and terrestrial C3 plants. The 14C dating indicates modern age for the shallow horizons to ~1030 BP at the base of the core. A probable wetter climate in the period of ~370 BP to ~340 BP was inferred from the data set, which corresponds to a part of the period covered by the Little Ice Age (LIA). 2010 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32717619019 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.3 Vol.82 |
| format | Artículo científico |
| id | redalyc_32717619019 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Last millennium environmental changes and climate inferences in the Southeastern Atlantic forest, Brazil Luiz C.R. Pessenda Multidisciplinaria (Ciencias Naturales y Exactas) pollen Little Ice Age Atlantic Forest last millennium C and N isotopes Last millennium environmental changes and climate inferences in the Southeastern Atlantic forest, Brazil Luiz C.R. Pessenda Soraya E.M.G. Saia Susy E.M. Gouveia Marie-Pierre Ledru Abdelfettah Sifeddine Paula G.C. Amaral José A. Bendassolli Multidisciplinaria (Ciencias Naturales y Exactas) pollen Little Ice Age Atlantic Forest last millennium C and N isotopes This study presents paleoenvironmental data based on pollen, elemental and isotopic compositions of organic matter (TOC, N, d13C and d15N) and 14C dating of 170 cm lake sediment record. Samplings have been made in Lagoa Grande at Parque Estadual Turístico do Alto Ribeira - PETAR, Southern São Paulo State, Southeastern Brazil. The variations in relative frequencies (in percentage) of arboreal pollen along the core range between 40 and 80%. The d13C values ranged from -23 to -30 and C/N of ~10 to 15, indicating the contribution of terrestrial C3 plants and algae in the sediment organic matter. The d15N results presented values from 3 to 4.5, also suggesting a mixture of algae and terrestrial C3 plants. The 14C dating indicates modern age for the shallow horizons to ~1030 BP at the base of the core. A probable wetter climate in the period of ~370 BP to ~340 BP was inferred from the data set, which corresponds to a part of the period covered by the Little Ice Age (LIA). 2010 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32717619019 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.3 Vol.82 |
| title | Last millennium environmental changes and climate inferences in the Southeastern Atlantic forest, Brazil |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) pollen Little Ice Age Atlantic Forest last millennium C and N isotopes |
| url | https://www.redalyc.org/articulo.oa?id=32717619019 |