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No. de sistema: 000039450

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008 _ _ 181126m20189999cauqr^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
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245 0 0 a| Variation in species diversity of deep-water megafauna assemblages in the Caribbean across depth and ecoregions
520 1 _ a| Diversity patterns of the deep-sea megafauna in the Caribbean Basin and the Guiana ecoregion were analyzed in order to test the hypothesis of species richness variation as a function of depth and the hypothesis of non-differences between ecoregions by analyzing spatial patterns of five taxa and a merged assemblage. Collections of five taxa (corals, sea stars, sea urchins, sea lilies and gastropods) were obtained from seven oceanographic expeditions aboard the R/V Pillsbury at 310 stations between 60 and 7500 m depth. Data were sorted according to depth zones and ecoregions and were analyzed in order to estimate species richness, changes in species composition and distinction of β-diversity by species turnover or by nestedness. The observed patterns of diversity were consistent between taxa and their assemblage: Species richness increased from the continental shelf (60±200 m deep) to the slope (200±2000 m deep), followed by a decrease at the continental rise-abyssal zone. We detected marked changes in species composition according to depth ranges. Changes in species composition in relation to ecoregions were also detected. In general, the Caribbean Basin lacks important physical barriers, causing high deep-sea ecosystem connectivity; however, variation in composition could be related to changes in environmental conditions associated with productivity and/or continental influences.
533 _ _ a| Reproducción electrónica en formato PDF
538 _ _ a| Adobe Acrobat profesional 6.0 o superior
650 _ 4 a| Diversidad biológica
650 _ 4 a| Corales
650 _ 4 a| Estrellas de mar
650 _ 4 a| Erizos de mar
650 _ 4 a| Lirios de mar
650 _ 4 a| Gasterópodos
650 _ 4 a| Taxonomía
651 _ 4 a| Mar Caribe
700 1 _ a| Hernández Avila, Iván
e| autor
700 1 _ a| Guerra Castro, Edlin
e| autor
700 1 _ a| Bracho, Carolina
e| autora
700 1 _ a| Rada, Martin
e| autor
700 1 _ a| Ocaña Borrego, Frank Alberto
e| autor
700 1 _ a| Pech Pool, Daniel Guadalupe
e| autora
773 0 _
t| PLoS One
g| Vol. 13, no. 8, e0201269 (August 2018), p. 1-18
x| 0187-6376
856 4 1 u| https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0201269
z| Artículo electrónico
856 _ _ u| http://aleph.ecosur.mx:8991/F?func=service&doc_library=CFS01&local_base=CFS01&doc_number=000039450&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
y| Artículo electrónico
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Noviembre 2018
905 _ _ a| Artecosur
905 _ _ a| Biblioelectrónica
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Variation in species diversity of deep-water megafauna assemblages in the Caribbean across depth and ecoregions
Hernández Avila, Iván (autor)
Guerra Castro, Edlin (autor)
Bracho, Carolina (autora)
Rada, Martin (autor)
Ocaña Borrego, Frank Alberto (autor)
Pech Pool, Daniel Guadalupe (autora)
Contenido en: PLoS One. Vol. 13, no. 8, e0201269 (August 2018), p. 1-18. ISSN: 0187-6376
No. de sistema: 39450
Tipo: - Artículo con arbitraje
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"Diversity patterns of the deep-sea megafauna in the Caribbean Basin and the Guiana ecoregion were analyzed in order to test the hypothesis of species richness variation as a function of depth and the hypothesis of non-differences between ecoregions by analyzing spatial patterns of five taxa and a merged assemblage. Collections of five taxa (corals, sea stars, sea urchins, sea lilies and gastropods) were obtained from seven oceanographic expeditions aboard the R/V Pillsbury at 310 stations between 60 and 7500 m depth. Data were sorted according to depth zones and ecoregions and were analyzed in order to estimate species richness, changes in species composition and distinction of β-diversity by species turnover or by nestedness. The observed patterns of diversity were consistent between taxa and their assemblage: Species richness increased from the continental shelf (60±200 m deep) to the slope (200±2000 m deep), followed by a decrease at the continental rise-abyssal zone. We detected marked changes in species composition according to depth ranges. Changes in species composition in relation to ecoregions were also detected. In general, the Caribbean Basin lacks important physical barriers, causing high deep-sea ecosystem connectivity; however, variation in composition could be related to changes in environmental conditions associated with productivity and/or continental influences."


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