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Mollusk death assemblages in 210Pb-dated marine sediment cores reveal recent biotic changes in the Gulf of Guanahacabibes, NW Cuba.
Armenteros, Maickel; Díaz-Asencio, Misael; Peraza-Escarrá, Rosely; Fernández-Garcés, Raúl; Martínez-Suárez, Adrián; Kenney, William F; Brenner, Mark.
Afiliação
  • Armenteros M; Centro de Investigaciones Marinas, Universidad de La Habana. 16 # 114, Playa, 11300, Habana, Cuba. Electronic address: maickel.armenteros@gmail.com.
  • Díaz-Asencio M; Escuela Nacional de Estudios Superiores. Unidad Mérida. UNAM. Carretera Mérida-Tetiz km. 4.5. Ucú, CP97357, Yucatán, Mexico; Centro de Estudios Ambientales de Cienfuegos. Carretera Castillo de Jagua, Cienfuegos, Cuba. Electronic address: misaeldiazasencio1971@gmail.com.
  • Peraza-Escarrá R; Centro de Investigaciones Marinas, Universidad de La Habana. 16 # 114, Playa, 11300, Habana, Cuba. Electronic address: roselyperaza2014@gmail.com.
  • Fernández-Garcés R; Centro de Estudios Ambientales de Cienfuegos. Carretera Castillo de Jagua, Cienfuegos, Cuba. Electronic address: rfg44@nauta.cu.
  • Martínez-Suárez A; Centro de Investigaciones Marinas, Universidad de La Habana. 16 # 114, Playa, 11300, Habana, Cuba. Electronic address: adrian@cim.uh.cu.
  • Kenney WF; Land Use and Environmental Change Institute, University of Florida. Gainesville, 32611-2120, Florida, USA. Electronic address: kenney@ufl.edu.
  • Brenner M; Land Use and Environmental Change Institute, University of Florida. Gainesville, 32611-2120, Florida, USA; Department of Geological Sciences, University of Florida. Gainesville, 32611-2120, Florida, USA. Electronic address: brenner@ufl.edu.
Mar Environ Res ; 171: 105477, 2021 Oct.
Article em En | MEDLINE | ID: mdl-34520892
We investigated stratigraphic changes in mollusk death assemblages and geochemistry in sediment cores from four seagrass beds and one unvegetated site in the Gulf of Guanahacabibes (GG), NW Cuba. There was a transition from mangrove to seagrass beds, associated with sea level rise ∼6000 years ago. Sediment accumulation rates during the last century showed a general rise, but increased sharply after ∼1980, likely because of human activities. The GG displayed overall high mollusk γ-diversity, and our estimate of 189 species is biased toward the low end. High ß-diversity was driven by inter-site differences in grain size, vegetation cover, and nutrient input. Spatial heterogeneity within the basin influenced downcore abundance and diversity metrics, highlighting the influence of local drivers. Herbivorous gastropods dominated in seagrass beds and suspension feeder bivalves were dominant on sandy bottom. In the top parts of cores, species richness declined at two sites that were subject to high, human-mediated bulk sedimentation rates and eutrophication. Conservation measures are needed to preserve this hotspot of marine diversity.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Biodiversidade / Chumbo Limite: Animals / Humans País/Região como assunto: Caribe / Cuba Idioma: En Revista: Mar Environ Res Assunto da revista: BIOLOGIA / SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Biodiversidade / Chumbo Limite: Animals / Humans País/Região como assunto: Caribe / Cuba Idioma: En Revista: Mar Environ Res Assunto da revista: BIOLOGIA / SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de publicação: Reino Unido