Variation in species diversity of deep-water megafauna assemblages in the Caribbean across depth and ecoregions

Hernández-Ávila, Iván; Guerra‐Castro, Edlin; Bracho, Carolina; Rada, Martín; Ocaña, Frank A.; Pech, Daniel

doi:10.1371/journal.pone.0201269

Cited by 11 publications

(9 citation statements)

References 63 publications

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“…In addition, Barroso et al [6] reported four regions working with prosobranch Gastropods from Brazil down to 200 m depth. In agreement with these previous authors, Hernández-Âvila et al [15] also detected changes in species composition in relation to ecoregions and depth in the Caribbean.…”

Section: Discussionsupporting

confidence: 90%

“…In this work, species seem to be arranged by the characteristics of the water mass they inhabit, instead of by their geographic position as proposed by Linse et al [17], Barroso et al [6] and Hernández-Âvila et al [15; among others]. However, this is not applicable to Group A because of the lack of samples between 2000 and 3000 m depth at high latitudes.…”

Section: Discussionmentioning

confidence: 87%

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Assemblages of certain benthic molluscs along the southwestern Atlantic: from subtidal to deep sea

2019

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BackgroundWe analyse the distribution of Gastropods and Chitons from shallow to deep waters along the southwestern Atlantic Ocean off Argentina and discuss possible factors determining the observed biogeographic patterns.ResultsThree major biogeographic groups are defined on the basis of Gastropod and Chiton species associations, i.e., continental shelf (< 350 m), upper continental slope (> 350–2000 m) and lower continental slope (2000–3000 m). Bathymetry appears as the main factor modifying large-scale distribution of the fauna at a. In this scenario, species associations are determined by marine currents that clearly occur at a particular and well defined depth. No arrangement of species by geographic location was found in assemblages from the continental shelf and upper continental slope.ConclusionsWe hypothesize that depth and marine currents are the main factor affecting the distribution of Gastropods and Chitons along the SW Atlantic between 200 and 3000 m depth.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 87%

Assemblages of certain benthic molluscs along the southwestern Atlantic: from subtidal to deep sea

2019

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“…Yet, despite recent technological developments, it is still difficult to sample this inaccessible environment due to strong currents, rough bottoms and high costs. Therefore, the deep sea is the least surveyed marine environment although having eminent species richness (Hernández-Ávila et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Natural history collections as a basis for sound biodiversity assessments: Plexauridae (Octocorallia, Holaxonia) of the Naturalis CANCAP and Tyro Mauritania II expeditions

Sampaio¹,

Carreiro‐Silva²,

Freiwald³

et al. 2019

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Mapping biodiversity is the marathon of the 21st Century as an answer to the present extinction crisis. A century in which science is also characterised by large scientific datasets collected through new technologies aiming to fill gaps in our knowledge of species distributions. However, most species records rely on observations that are not linked to specimens, which does not allow verification of species hypotheses by other scientists. Natural history museums form a verifiable source of biodiversity records which were made by taxonomists. Nonetheless, these museums seem to be forgotten by biologists in scientific fields other than taxonomy or systematics. Naturalis Biodiversity Center (NBC) in Leiden is care keeper of large collections of marine organisms, which were sampled in the Northeast Atlantic during the CANCAP and Tyro Mauritania II expeditions (1976–1988). Many octocorals were sampled and deposited in the NBC collection, where they became available for study and were partially identified by the senior author (M.G.) in the 1980s. Nonetheless, no checklist or taxonomic revision was published so far with the complete results. In 2016 the first author visited NBC to examine NE Atlantic Plexauridae octocorals. Plexauridae octocoral-vouchered records were listed and mapped to reveal high standard primary biodiversity records unreported so far for the NE Atlantic Ocean. Twenty-four Plexauridae species with ~ six putative new species to science were discovered and eleven new biogeographical records were made from distinct Macaronesian archipelagos. Finally, new depth range records were found for three species at sea basin level and for eight species at a regional scale.

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“…Large deep‐sea connectivity due to a lack of physical barriers in the Caribbean Sea area has recently been indicated (Hernández‐Ávila et al, ). For this reason, deep‐water species catalogued with Caribbean distribution, such as C. cubana, Etmopterus carteri Springer & Burgess 1985 , E. hillianus, E. robinsi, Centrophorus tessellatus Garman 1906 , M. owstoni, G. arae, G. antillensis, S. maculatus, S. torrei (Ebert et al, ), Somniosus sp.…”

Section: Discussionmentioning

confidence: 99%

Updated taxonomic list and conservation status of chondrichthyans from the exclusive economic zone of Venezuela, with first generic and specific records

Ehemann

González-González

Tagliafico

et al. 2019

Journal of Fish Biology

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Using the last taxonomic review of chondrichthyans of the world, we selected the species distributed in the north-western Atlantic Ocean (NWA) and compared it with the available published literature related to the class Chondrichthyes in the Venezuelan exclusive economic zone. We also revised information from worldwide databases such as: FAO (NWA-31 area), GBIF, iSpecies, IUCN and OBIS, as well as available museum collection databases. The taxonomic validity was checked using the Catalogue of Fishes of the California Academy of Sciences and recent references. The past published Venezuelan lists of chondrichthyans combined included nine orders, 30 families and 108 species. The updated list with 12 orders, 36 families and 122 species increased by three new orders, six families, three shark genera, nine shark species (one replacing another species), one chimaera genus, two chimaera species, three batoid genera and six batoid species (two replacing other species). Four holotype specimens (two sharks and two rays) are deposited in Venezuelan Museums. Most of the species have an IUCN conservation status, including four species catalogued as Critically Endangered, six as Endangered and 18 species as Vulnerable. Deepsea fisheries, scientific exploration and taxonomic/genetic revisions might add future increments to the Venezuelan chondrichthyan list. K E Y W O R D S batoids, Caribbean Sea, chimaeras, elasmobranchii, holocephali, sharks

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Variation in species diversity of deep-water megafauna assemblages in the Caribbean across depth and ecoregions

Cited by 11 publications

References 63 publications

Assemblages of certain benthic molluscs along the southwestern Atlantic: from subtidal to deep sea

Assemblages of certain benthic molluscs along the southwestern Atlantic: from subtidal to deep sea

Natural history collections as a basis for sound biodiversity assessments: Plexauridae (Octocorallia, Holaxonia) of the Naturalis CANCAP and Tyro Mauritania II expeditions

Updated taxonomic list and conservation status of chondrichthyans from the exclusive economic zone of Venezuela, with first generic and specific records

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