NDLI: Cephalopod assemblages, abundance and species distribution in the Gulf of Cadiz (SW Spain)

Content Provider	EDP Sciences
Author	Luis Silva Yolanda Vila M. Ángeles Torres Ignacio Sobrino Juan Jose Acosta
Abstract	Spatial distribution and species diversity of Cephalopoda caught in ARSA bottom trawl surveys were studied out during two different seasons (autumn and spring) in the Gulf of Cadiz (Spain) from 2000 to 2007. Species composition of cephalopod assemblages was analysed, using both clustering analyses and non-metric multidimensional scaling analysis (nMDS). Spatial distribution of the assemblages identified and abundance of the main species were mapped with Surfer 8.0 software, using kriging as the geostatistical gridding method. A total of 35 cephalopod species belonging to 6 families were found at depths between 20 and 700 m. In each season, Sepiolidae was the most abundant family in terms of number of species, followed by Octopodidae. The species richness increased up to 100–120 m depth, where it reached the maximum value. From 120 m, the species richness decreased progressively with depth. In spring, the species with the highest occurrence was Eledone moschata (34%) and in autumn it was Alloteuthis media (70%). In both seasons, the most abundant species in terms of weight was Octopus vulgaris, while Alloteuthis media showed the highest yields in terms of numbers. Most species showed wide bathymetric ranges, especially in autumn. Three different assemblages were found in both seasons during the time period analysed (although 2003 and 2006 were not included in the cluster analysis): shelf assemblage (20–160 m), deep shelf/upper slope assemblage (100–350 m) and middle slope assemblage (320–700 m). The specific composition of these three assemblages was similar between spring and autumn and an overlap could be observed between them, mainly in the two continental shelf groups: shelf and deep shelf/upper slope assemblages. Alloteuthis media and Alloteuthis subulata were the most abundant species in the shelf assemblage as well as in the deep shelf/upper slope assemblage. In the middle slope assemblage, Illex coindetii was the most abundant species. The assemblages and their spatial distributions could be largely related to a combination of physical and biological factors and their interactions.
Ending Page	26
Starting Page	13
Page Count	14
File Format	HTM / HTML PDF
ISSN	09907440
Alternate Webpage(s)	https://www.alr-journal.org/articles/alr/abs/2011/01/alr110002/alr110002.html
e-ISSN	17652952
Issue Number	1
Journal	Aquatic Living Resources
Volume Number	24
DOI	10.1051/alr/2011101
Language	English
Publisher	EDP Sciences
Publisher Date	2011-01-01
Access Restriction	Open
Rights Holder	© EDP Sciences, IFREMER, IRD 2011
Subject Keyword	Cephalopod assemblages Bottom trawl Survey Species diversity Octopoda Sepioidea Teuthoidea Atlantic Ocean Gulf of Cadiz Cephalopod assemblages / Bottom trawl Survey / Species diversity / Octopoda / Sepioidea / Teuthoidea / Atlantic Ocean / Gulf of Cadiz
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Biodiversity and distribution of macroinfauna assemblages on sandy beaches along the Gulf of Cadiz (SW Spain)

Testing Nordmøre grids on the target and by-catch species of the commercial bottom trawl fishery in the Gulf of Cadiz

Effect of water temperature on catchability of Atlantic cod (Gadus morhua) to the bottom-trawl survey in the southern Gulf of St Lawrence

Cephalopod Species in Mozambican Waters Caught in the “Mozambique 0307 ” Survey: Distribution, Abundance and Assemblages

Biomarker Assemblages in Estuarine Sediments from the Southwest Atlantic Coast of Spain ( Gulf of Cadiz )

Evaluation of trawling disturbance on macrobenthic invertebrate communities in the Bay of Biscay, France: Abundance Biomass Comparison (ABC method)

Oceanic cephalopod distribution and species diversity in the eastern north atlantic.

Megafaunal assemblages in deep-sea ecosystems of the Gulf of Cadiz, northeast Atlantic ocean

Macrofaunal assemblages from mud volcanoes in the Gulf of Cadiz: abundance, biodiversity and diversity partitioning across spatial scales

Cephalopod assemblages, abundance and species distribution in the Gulf of Cadiz (SW Spain)

Similar Documents

Biodiversity and distribution of macroinfauna assemblages on sandy beaches along the Gulf of Cadiz (SW Spain)

Testing Nordmøre grids on the target and by-catch species of the commercial bottom trawl fishery in the Gulf of Cadiz

Effect of water temperature on catchability of Atlantic cod (Gadus morhua) to the bottom-trawl survey in the southern Gulf of St Lawrence

Cephalopod Species in Mozambican Waters Caught in the “Mozambique 0307 ” Survey: Distribution, Abundance and Assemblages

Biomarker Assemblages in Estuarine Sediments from the Southwest Atlantic Coast of Spain ( Gulf of Cadiz )

Evaluation of trawling disturbance on macrobenthic invertebrate communities in the Bay of Biscay, France: Abundance Biomass Comparison (ABC method)

Oceanic cephalopod distribution and species diversity in the eastern north atlantic.

Megafaunal assemblages in deep-sea ecosystems of the Gulf of Cadiz, northeast Atlantic ocean

Macrofaunal assemblages from mud volcanoes in the Gulf of Cadiz: abundance, biodiversity and diversity partitioning across spatial scales

Cephalopod assemblages, abundance and species distribution in the Gulf of Cadiz (SW Spain)