Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

SEDIMENT CHARACTERISTICS AND FORAMINIFERAL ASSEMBLAGES IN THE NEARSHORE BENTHOS AT PONTA NEGRA, RN, BRAZIL

2017; Cushman Foundation for Foraminiferal Research; Volume: 47; Issue: 3 Linguagem: Inglês

10.2113/gsjfr.47.3.258

1943-264X

Patrícia P.B. Eichler, Roberto Lima Barcellos, Luciana Dantas dos Santos, Helenice Vital, Moab Praxedes Gomes,

Marine and coastal ecosystems

Research Article| July 01, 2017 Sediment Characteristics and Foraminiferal Assemblages in the Nearshore Benthos At Ponta Negra, Rn, Brazil Patrícia P. B., Eichler; Patrícia P. B., Eichler 4 1Programa de Pós-Graduação em Geodinâmica e Geofísica, Centro de Ciências Exatas e da Terra da Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59072-970, Natal, RN, Brazil 2Universidade do Sul de Santa Catarina (UNISUL). Cidade Universitária, Av. Pedra Branca, 25, Palhoça, SC 88137-270, Brazil 4Correspondence author. E-mail: patriciaeichler@gmail.com Search for other works by this author on: GSW Google Scholar Roberto Barcellos; Roberto Barcellos 3Departamento de Oceanografia, Laboratório de Oceanografia Geológica, Centro de Tecnologia e Geociência, Universidade Federal de Pernambuco, Recife, PE, Brazil Search for other works by this author on: GSW Google Scholar Luciana Santos; Luciana Santos 3Departamento de Oceanografia, Laboratório de Oceanografia Geológica, Centro de Tecnologia e Geociência, Universidade Federal de Pernambuco, Recife, PE, Brazil Search for other works by this author on: GSW Google Scholar Helenice Vital; Helenice Vital 1Programa de Pós-Graduação em Geodinâmica e Geofísica, Centro de Ciências Exatas e da Terra da Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59072-970, Natal, RN, Brazil Search for other works by this author on: GSW Google Scholar Moab Praxedes Gomes Moab Praxedes Gomes 1Programa de Pós-Graduação em Geodinâmica e Geofísica, Centro de Ciências Exatas e da Terra da Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59072-970, Natal, RN, Brazil Search for other works by this author on: GSW Google Scholar Author and Article Information Patrícia P. B., Eichler 4 1Programa de Pós-Graduação em Geodinâmica e Geofísica, Centro de Ciências Exatas e da Terra da Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59072-970, Natal, RN, Brazil 2Universidade do Sul de Santa Catarina (UNISUL). Cidade Universitária, Av. Pedra Branca, 25, Palhoça, SC 88137-270, Brazil Roberto Barcellos 3Departamento de Oceanografia, Laboratório de Oceanografia Geológica, Centro de Tecnologia e Geociência, Universidade Federal de Pernambuco, Recife, PE, Brazil Luciana Santos 3Departamento de Oceanografia, Laboratório de Oceanografia Geológica, Centro de Tecnologia e Geociência, Universidade Federal de Pernambuco, Recife, PE, Brazil Helenice Vital 1Programa de Pós-Graduação em Geodinâmica e Geofísica, Centro de Ciências Exatas e da Terra da Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59072-970, Natal, RN, Brazil Moab Praxedes Gomes 1Programa de Pós-Graduação em Geodinâmica e Geofísica, Centro de Ciências Exatas e da Terra da Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, 59072-970, Natal, RN, Brazil 4Correspondence author. E-mail: patriciaeichler@gmail.com Publisher: Cushman Foundation for Foraminiferal Research First Online: 09 Nov 2017 Online Issn: 1943-264X Print Issn: 0096-1191 © 2017, The Cushman Foundation for Foraminiferal Research Journal of Foraminiferal Research (2017) 47 (3): 258–267. https://doi.org/10.2113/gsjfr.47.3.258 Article history First Online: 09 Nov 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Patrícia P. B., Eichler, Roberto Barcellos, Luciana Santos, Helenice Vital, Moab Praxedes Gomes; Sediment Characteristics and Foraminiferal Assemblages in the Nearshore Benthos At Ponta Negra, Rn, Brazil. Journal of Foraminiferal Research 2017;; 47 (3): 258–267. doi: https://doi.org/10.2113/gsjfr.47.3.258 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyJournal of Foraminiferal Research Search Advanced Search Abstract This study examined sediments and foraminiferal assemblages on the inner continental shelf adjacent to Ponta Negra Beach, an important tourist destination in northeast Brazil. Eighteen sediment samples were collected in October 2013, nine each at depths of 5 m and 10 m. The predominance of sandy textures (64–99%), the very limited amounts of organic matter (<4.3%), and minimal differences in surface and bottom temperatures and dissolved O2 concentrations, indicate that hydrodynamics, including waves and currents, are major influences on the sedimentary environment. Foraminiferal species richness was very low; only 11 species were identified in the most species-rich sample and the median for the 18 samples was 5 species. The dominant species were Ammonia tepida, Quinqueloculina angulata, Q. atlantica, Textularia gramen, Bolivina translucens and Pseudononion atlanticum, which are common nearshore shelf taxa. At the 5 m stations, A. tepida and Q. angulata dominated, while at the 10 m stations, T. gramen dominated. Principal Components Analysis revealed four major factors: sand, depth, % gravel and % silt and clay; % gravel correlated positively with % carbonate and % total organic matter in the sediments. Cluster analysis of the foraminiferal data produced two distinct groups corresponding to the 5 m and 10 m stations. In a multidimensional-scaling plot, each group spread along a linear trend from low to higher % carbonate, with slightly higher organic matter in the 10 m samples. Ammonia tepida, an opportunistic and hypoxia-tolerant species, was most dominant near the outlet of the heavily urbanized Potengi River. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.