Growing at the limit: Reef growth sensitivity to climate and oceanographic changes in the South Western Atlantic

Autor(es):Mostrar menos -

Pereira-Filho, Guilherme H. ^[1] ; Mendes, Vinicius R. ^[1] ; Perry, Chris T. ^[2] ; Shintate, I, Gustavo ; Niz, Willians C. ^[3] ; Sawakuchi, Andre O. ^[4] ; Bastos, Alex C. ^[5] ; Giannini, Paulo Cesar F. ^[4] ; Motta, Fabio S. ^[3] ; Millo, Christian ^[6] ; Paula-Santos, Gustavo M. ^{[7, 8]} ; Moura, Rodrigo L. ^{[9, 10]}

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Paulo, Inst Mar, Lab Ecol & Conservacao Marinha, Rua Dr Carvalho Mendonca 144, BR-110070 Santos, SP - Brazil

^[2] Univ Exeter, Coll Life & Environm Sci, Geog, Exeter, Devon - England

^[3] Shintate, Gustavo, I, Univ Fed Sao Paulo, Inst Mar, Lab Ecol & Conservacao Marinha, Rua Dr Carvalho Mendonca 144, BR-110070 Santos, SP - Brazil

^[4] Univ Sao Paulo, Inst Geociencias, Rua Lago 562, BR-05508080 Sao Paulo - Brazil

^[5] Univ Fed Espirito Santo, UFES Dept Oceanog & Ecol, BR-29075910 Vitoria, ES - Brazil

^[6] Univ Sao Paulo, Inst Oceanog, Praca Oceanog 191, BR-05508120 Sao Paulo - Brazil

^[7] Univ Bremen, MARUM Ctr Marine Environm Sci, Leobener Str 8, D-28359 Bremen - Germany

^[8] Univ Bremen, Fac Geosci, Leobener Str 8, D-28359 Bremen - Germany

^[9] Univ Fed Rio de Janeiro, Inst Biol, Rio De Janeiro - Brazil

^[10] Univ Fed Rio de Janeiro, SAGE COPPE, Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: GLOBAL AND PLANETARY CHANGE; v. 201, JUN 2021.
• Citações Web of Science: 0

Resumo

Whilst the impacts of climatic and oceanographic change on lower latitude reefs are increasingly well documented, our understanding of how reef-building has fluctuated in higher latitude settings remains limited. Here, we explore the timing and longevity of reef-building through the mid- to late Holocene in the most southerly known reef (24 degrees S) in the Western Atlantic. Reef core data show that reef growth was driven by a single coral species, Madracis decactis, and occurred over two phases since similar to 6000 calibrated (cal.) yr B.P.. These records further indicate that there was a clear growth hiatus from similar to 5500 to 2500 cal. yr B.P., and that there is no evidence of reef accretion on the Queimada Grande Reef (QGR) over the past 2000 yrs. It thus presently exists as a submerged senescent structure colonized largely by non-reef building organisms. Integration of these growth data with those from sites further north (18 degrees S and 21 degrees S) suggests that Intertropical Convergence Zone (ITCZ), South Westerlies Winds (SWW) and El Nino-Southern Oscillation (ENSO) variability and shifts during the Holocene drove changes in the position of the Brazil-Falklands/Malvinas Confluence (BFMC), and that this has had a strong regional influence on the timing and longevity of reef growth. Our results add new evidence to the idea that reef growth in marginal settings can rapidly turn-on or -off according to regional environmental changes, and thus are of relevance for predicting high latitude reef growth potential under climate change. (AU)

• Processo FAPESP: 16/14017-0 - Avaliação de processos que determinam a formação e a biodiversidade associada a bancos de rodolitos em diferentes escalas espaciais
• Beneficiário: Guilherme Henrique Pereira Filho
• Modalidade de apoio: Auxílio à Pesquisa - Regular