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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Biodiversity and biogeography of hydroids across marine ecoregions and provinces of southern South America and Antarctica

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Author(s):
Miranda, Thais P. [1] ; Fernandez, Marina O. [2] ; Genzano, Gabriel N. [3, 4] ; Pena Cantero, Alvaro L. [5] ; Collins, Allen G. [6] ; Marques, Antonio C. [2]
Total Authors: 6
Affiliation:
[1] Univ Estadual Londrina, Ctr Ciencias Biol, Dept Biol Anim & Vegetal, Londrina, Parana - Brazil
[2] Univ Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo, SP - Brazil
[3] Univ Nacl Mar del Plata, Estn Costera JJ Nagera, Funes 3350, RA-7600 Mar Del Plata - Argentina
[4] Consejo Nacl Invest Cient & Tecn IIMyC CONICET, Inst Invest Marinas & Costeras, Mar Del Plata - Argentina
[5] Univ Valencia, Inst Cavanilles Biodiversidad & Biol Evolut Dept, Valencia - Spain
[6] Smithsonian Inst, Natl Systemat Lab, Natl Museum Nat Hist, NOAA, Fisheries Serv, Washington, DC 20560 - USA
Total Affiliations: 6
Document type: Journal article
Source: POLAR BIOLOGY; v. 44, n. 8 JUN 2021.
Web of Science Citations: 0
Abstract

To better understand the biodiversity-biogeographic polar connections between southern South America and Antarctica (SSA \& A), we used benthic communities of hydroids as a model to investigate marine assemblages by evaluating classic spatial divisions at different geographical resolutions. Using a georeferenced dataset of 249 species and multivariate analyses, we investigated species' distribution, composition and biogeographic connectivity, and defined assemblages of ecoregions and provinces for the area. Hotspots of rich biodiversity at risk of depletion were defined. Analyses of ecoregions have a more stratified biogeographic structure, and reveal critical regions susceptible to loss of diversity. Analyses of provinces show a clear division between Atlantic-Pacific and Antarctic-Subantartic assemblages, with high biogeographic isolation of the Subantarctic islands. Depending on spatial resolution, the biogeographic position of the Magellan area is spatially contradictory, clustering on the one hand with SSA ecoregions and on the other with Antarctic provinces. Our patterns appear to be driven by different combinations of processes and barriers, reflected in the stratified distribution of hydroids. The high level of endemism and concentration of species at the edge of distribution in the Magellan area and Scotia Arc suggest their transitional nature and particular importance for understanding the historical and ecological connections between SSA \& A. (AU)

FAPESP's process: 13/10821-1 - Distribution patterns of hydrozoans (Cnidaria) in deep waters of the Atlantic Ocean and adjacent polar seas
Grantee:Marina de Oliveira Fernandez
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 18/04257-0 - Deep-sea macroecology: integrating taxonomy, phylogeny, and function into inferences of Atlantic hydroids (Cnidaria) distribution patterns
Grantee:Marina de Oliveira Fernandez
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/24407-5 - Benthic hydroids in sub Antarctic and Antarctic region endemism areas and their dispersion mechanisms influence on marine biogeographic patterns
Grantee:Thaís Pires Miranda
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/50242-5 - Dimensions of marine life: patterns and process of diversifications in planktonic and benthic cnidarians
Grantee:Antonio Carlos Marques
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 10/06927-0 - Biodiversity and areas of endemism of benthic hydroids (Cnidaria, Hydrozoa) from southern South America and Antarctica
Grantee:Thaís Pires Miranda
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 12/21453-0 - Biodiversity and areas of endemism of benthic hydroids (Cnidaria, Hydrozoa) from Patagonia and Antarctica
Grantee:Thaís Pires Miranda
Support type: Scholarships abroad - Research Internship - Doctorate