Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins
Abundance, biomass and diversity patterns of bathyal and abyssal Mediterranean megafauna (fishes and invertebrates) were analyzed in the western Balearic Sea, the western Ionian Sea and the eastern Ionian Sea. Sampling was conducted with a Otter-trawl Maireta System (OTMS) at depths ranging from 600...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2011-06-01
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| Series: | Scientia Marina |
| Subjects: | |
| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1256 |
| _version_ | 1818642006368321536 |
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| author | Samuele Tecchio Eva Ramírez-Llodra Francisco Sardà Joan Baptista Company |
| author_facet | Samuele Tecchio Eva Ramírez-Llodra Francisco Sardà Joan Baptista Company |
| author_sort | Samuele Tecchio |
| collection | DOAJ |
| description | Abundance, biomass and diversity patterns of bathyal and abyssal Mediterranean megafauna (fishes and invertebrates) were analyzed in the western Balearic Sea, the western Ionian Sea and the eastern Ionian Sea. Sampling was conducted with a Otter-trawl Maireta System (OTMS) at depths ranging from 600 to 4000 m. A series of ecological indicators were computed: total abundance and biomass, Margalef species richness, Shannon-Wiener diversity and Pielou’s index of evenness. A multidimensional scaling was applied, indicating that the megafauna communities were grouped by depth, while geographic area had a less defined influence. Margalef richness declined with depth in all three areas, but more steeply in the western Ionian Sea. Pielou’s evenness behaved differently in the three zones, showing a V-shaped curve in the eastern Ionian while showing a decreasing pattern in the other two areas. At lower slope depths, massive presence of the fishes Alepocephalus rostratus in the western basin and Bathypterois mediterraneus in the central basin caused a sharp reduction in evenness. |
| first_indexed | 2024-12-16T23:36:12Z |
| format | Article |
| id | doaj.art-dcaa293a39154616842fedf47ec48bc8 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-16T23:36:12Z |
| publishDate | 2011-06-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-dcaa293a39154616842fedf47ec48bc82022-12-21T22:11:44ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342011-06-0175234135010.3989/scimar.201175n23411245Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basinsSamuele Tecchio0Eva Ramírez-Llodra1Francisco Sardà2Joan Baptista Company3Institut de Ciències del Mar (CSIC)Institut de Ciències del Mar (CSIC)Institut de Ciències del Mar (CSIC)Institut de Ciències del Mar (CSIC)Abundance, biomass and diversity patterns of bathyal and abyssal Mediterranean megafauna (fishes and invertebrates) were analyzed in the western Balearic Sea, the western Ionian Sea and the eastern Ionian Sea. Sampling was conducted with a Otter-trawl Maireta System (OTMS) at depths ranging from 600 to 4000 m. A series of ecological indicators were computed: total abundance and biomass, Margalef species richness, Shannon-Wiener diversity and Pielou’s index of evenness. A multidimensional scaling was applied, indicating that the megafauna communities were grouped by depth, while geographic area had a less defined influence. Margalef richness declined with depth in all three areas, but more steeply in the western Ionian Sea. Pielou’s evenness behaved differently in the three zones, showing a V-shaped curve in the eastern Ionian while showing a decreasing pattern in the other two areas. At lower slope depths, massive presence of the fishes Alepocephalus rostratus in the western basin and Bathypterois mediterraneus in the central basin caused a sharp reduction in evenness.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1256diversitymegafaunadeep seawestern mediterraneanwestern ionianeastern ionian |
| spellingShingle | Samuele Tecchio Eva Ramírez-Llodra Francisco Sardà Joan Baptista Company Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins Scientia Marina diversity megafauna deep sea western mediterranean western ionian eastern ionian |
| title | Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins |
| title_full | Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins |
| title_fullStr | Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins |
| title_full_unstemmed | Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins |
| title_short | Biodiversity of deep-sea demersal megafauna in western and central Mediterranean basins |
| title_sort | biodiversity of deep sea demersal megafauna in western and central mediterranean basins |
| topic | diversity megafauna deep sea western mediterranean western ionian eastern ionian |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1256 |
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