1. Identificação | |
Tipo de Referência | Artigo em Revista Científica (Journal Article) |
Site | mtc-m21c.sid.inpe.br |
Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
Identificador | 8JMKD3MGP3W34R/4464SK5 |
Repositório | sid.inpe.br/mtc-m21c/2021/02.10.11.38 (acesso restrito) |
Última Atualização | 2021:02.10.11.38.42 (UTC) administrator |
Repositório de Metadados | sid.inpe.br/mtc-m21c/2021/02.10.11.38.42 |
Última Atualização dos Metadados | 2022:04.03.22.28.06 (UTC) administrator |
DOI | 10.1016/j.palaeo.2020.109952 |
ISSN | 0031-0182 |
Chave de Citação | PiacsekBeGuVeLeBeAl:2021:ChSeSu |
Título | Changes in sea surface hydrography and productivity in the western equatorial Atlantic since the last interglacial |
Ano | 2021 |
Mês | Jan. |
Data de Acesso | 16 maio 2024 |
Tipo de Trabalho | journal article |
Tipo Secundário | PRE PI |
Número de Arquivos | 1 |
Tamanho | 7781 KiB |
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2. Contextualização | |
Autor | 1 Piacsek, Patrícia 2 Behling, Hermann 3 Gu, Fang 4 Venancio, Igor Martins 5 Lessa, Douglas V. O. 6 Belem, André 7 Albuquerque, Ana Luiza S. |
Grupo | 1 2 3 4 MET-MET-DIPGR-INPE-MCTI-GOV-BR |
Afiliação | 1 Universidade Federal Fluminense (UFF) 2 University of Goettingen 3 University of Goettingen 4 Instituto Nacional de Pesquisas Espaciais (INPE) 5 Universidade Federal Fluminense (UFF) 6 Universidade Federal Fluminense (UFF) 7 Universidade Federal Fluminense (UFF) |
Endereço de e-Mail do Autor | 1 Piacsekpatricia@gmail.com 2 3 4 igor.venancio@inpe.br |
Revista | Palaeogeography, Palaeoclimatology, Palaeoecology |
Volume | 562 |
Páginas | e109952 |
Nota Secundária | A1_INTERDISCIPLINAR A1_GEOGRAFIA A1_ENGENHARIAS_III A1_CIÊNCIAS_AMBIENTAIS A1_BIODIVERSIDADE A2_SAÚDE_COLETIVA A2_GEOCIÊNCIAS A2_CIÊNCIAS_AGRÁRIAS_I B1_QUÍMICA B1_ENGENHARIAS_IV B1_CIÊNCIAS_BIOLÓGICAS_I B2_ASTRONOMIA_/_FÍSICA C_FILOSOFIA/TEOLOGIA:subcomissão_FILOSOFIA |
Histórico (UTC) | 2021-06-02 13:20:47 :: simone -> administrator :: 2021 2022-04-03 22:28:06 :: administrator -> simone :: 2021 |
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3. Conteúdo e estrutura | |
É a matriz ou uma cópia? | é a matriz |
Estágio do Conteúdo | concluido |
Transferível | 1 |
Tipo do Conteúdo | External Contribution |
Tipo de Versão | publisher |
Palavras-Chave | Dinoflagellate Glacial-Interglacial Intertropical Convergence Zone Heinrich Stadials |
Resumo | Scientific projections point to the increase of greenhouse gas levels in the atmosphere will turn the oceans warmer and, consequently, the upper layer of the thermohaline circulation will get thicker, restricting the productivity areas. Oligotrophic conditions will tend to prevail, and expanding the range of proxy data in oligotrophic oceans, across different climate scenarios, has the potential to improve predictions of climate models about how primary productivity will respond. Still, the variability of past primary production in the equatorial Atlantic remains elusive. We used organic-walled dinoflagellate cysts (dinocysts) assemblages to reconstruct changes in the sea surface hydrography and productivity in the western equatorial Atlantic over the last similar to 130 kyr. Four dinocysts assemblages were defined: open ocean, river outflow, neritic and nutricline assemblages. Multiple proxies were used to support the environmental changes evidenced by the observed variations in the dinocyst assemblages, such as the X-ray fluorescence (XRF) Ti/Ca ratio, and planktonic foraminifera abundances. We observed glacial-interglacial as well as the millennial-scale changes in the dinocyst assemblages. A clear glacial-interglacial pattern was marked by more autotrophs dinocysts over the interglacials and the prevalence of heterotrophs dinocysts during the glacial period. We pointed out the interchange of autotrophs assemblages (nutricline and open ocean) over the interglacials intervals, denoting divergences in nutrient availability. During the last glacial period, precipitation events occurred in northeastern Brazil due to southward displacements of the Intertropical Convergence Zone (ITCZ). The increase of precipitation boosted the freshwater input to the adjacent ocean, and the dinocyst assemblages oscillated in response to such freshwater/salinity changes. Over the glacial period, dinocysts with different nutritional requirements (autotrophs and heterotrophs) varied following the ITCZ displacements. Thus, in this study, we showed the influence of ocean-atmospheric processes on the ocean and investigated the productivity in an oligotrophic region over distinct past climatic backgrounds. |
Área | MET |
Arranjo 1 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > MET > Changes in sea... |
Arranjo 2 | Changes in sea... |
Conteúdo da Pasta doc | acessar |
Conteúdo da Pasta source | não têm arquivos |
Conteúdo da Pasta agreement | |
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4. Condições de acesso e uso | |
Idioma | en |
Arquivo Alvo | piacsek_changes.pdf |
Grupo de Usuários | simone |
Visibilidade | shown |
Política de Arquivamento | denypublisher denyfinaldraft24 |
Permissão de Leitura | deny from all and allow from 150.163 |
Permissão de Atualização | não transferida |
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5. Fontes relacionadas | |
Unidades Imediatamente Superiores | 8JMKD3MGPCW/3F35TRS 8JMKD3MGPCW/46KUATE |
Divulgação | WEBSCI; PORTALCAPES; AGU; MGA; COMPENDEX. |
Acervo Hospedeiro | urlib.net/www/2017/11.22.19.04 |
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6. Notas | |
Campos Vazios | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn label lineage mark mirrorrepository nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url |
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7. Controle da descrição | |
e-Mail (login) | simone |
atualizar | |
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