Demersal cephalopod communities in the Mediterranean: a large-scale analysis

Type Article
Date 2017-12
Language English
Author(s) Keller Stefanie1, Hidalgo Manuel1, Alvarez-Berastegui Diego2, Bitetto Isabella3, Casciaro Loredana3, Cuccu Danila4, Esteban Antonio5, Garofalo Germana6, Gonzalez Maria7, 8, Guijarro Beatriz1, Josephides Marios, Jadaud AngeliqueORCID9, Lefkaditou Evgenia10, Maiorano Porzia11, Manfredi Chiara12, Marceta Bojan13, Micallef Reno14, Peristeraki Panagiota15, 16, Relini Giulio17, 18, Sartor Paolo19, Spedicato Maria Teresa3, Tserpes George15, Quetglas Antoni1
Affiliation(s) 1 : Ctr Oceanograf Baleares, Inst Espanol Oceanograf, Palma de Mallorca 07015, Spain.
2 : Balear Islands Coastal Observing & Forecasting SO, Palma de Mallorca 07122, Spain.
3 : Stn Sperimentale Studio Risorse Mare, COISPA Tecnol & Ric, I-70126 Bari, Italy.
4 : Univ Cagliari, Dipartimento Sci Ambientali, I-09124 Cagliari, Italy.
5 : Ctr Oceanograf Murcia, Murcia 30740, Spain.
6 : CNR, IAMC Coastal Marine Environm Inst, I-91026 Mazara Vallo, TP, Italy.
7 : Ctr Oceanograf Malaga, IEO, Malaga 29640, Spain.
8 : Minist Agr Rural Dev & Environm, Dept Fisheries & Marine Res, CY-1416 Nicosia, Cyprus.
9 : Lab Halieut Mediterranee, UMR MARBEC, IFREMER, F-34203 Sete, France.
10 : Hellen Ctr Marine Res, HCMR, Athens 16777, Greece.
11 : Univ Bari Aldo Moro, Dept Biol, I-70125 Bari, Italy.
12 : Univ Bologna, Lab Biol Marina & Pesca, I-61032 Fano, Italy.
13 : Fishery Res Inst Slovenia, Ljubljana 1211, Slovenia.
14 : Minist Sustainable Dev, Dept Fisheries & Aquaculture, Marsa 3303, Malta.
15 : Hellen Ctr Marine Res, HCMR, Iraklion 71003, Greece.
16 : Univ Crete, Biol Dept, Iraklion 71409, Greece.
17 : Univ Genoa, SIBM, I-16132 Genoa, Italy.
18 : Univ Genoa, DISTAV, I-16132 Genoa, Italy.
19 : CIBM Ctr Interuniv Biol Marina Ecol Appl, I-57128 Livorno, Italy.
Source Marine Ecology Progress Series (0171-8630) (Inter-research), 2017-12 , Vol. 584 , P. 105-118
DOI 10.3354/meps12342
WOS© Times Cited 8
Keyword(s) Cephalopods, Mediterranean, Environmental gradients, Community analysis, Bottom trawl surveys, MEDITS
Abstract

Cephalopod assemblages at the scale of the entire Mediterranean Sea were analysed using information from 2 decades of standardized scientific bottom trawl surveys. Western and eastern assemblages (6 yr of data) were compared using a combined approach of multivariate ordination techniques and non-linear regressions. These methods enabled us to distinguish assemblages and simultaneously analyse the influence of geographic, bathymetric and environmental (sea surface temperature and chlorophyll a concentration) gradients on observed community patterns. Despite few differences in species composition between sub-basins, the relative contribution of species differed. Bathymetry was the primary structural driver for the cephalopod communities of both basins, and contributed to 3 assemblages (shallow water, upper slope and middle slope). Winter temperature influenced community assemblages more strongly in the western than in the eastern basin, in contrast to a small but consistent winter productivity influence on community assemblages in both basins. Thus, the environmental parameters analysed did not cause an immediate change in cephalopod assemblages, but rather an effect lagged by several months. Differences in the relative importance of environmental drivers show that different processes operate in the 2 basins. These results demonstrate similarities and differences between Mediterranean basins regarding important cephalopod functional groups. This information should help integrative ecosystem management approaches currently used in fisheries and conservation management.

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Keller Stefanie, Hidalgo Manuel, Alvarez-Berastegui Diego, Bitetto Isabella, Casciaro Loredana, Cuccu Danila, Esteban Antonio, Garofalo Germana, Gonzalez Maria, Guijarro Beatriz, Josephides Marios, Jadaud Angelique, Lefkaditou Evgenia, Maiorano Porzia, Manfredi Chiara, Marceta Bojan, Micallef Reno, Peristeraki Panagiota, Relini Giulio, Sartor Paolo, Spedicato Maria Teresa, Tserpes George, Quetglas Antoni (2017). Demersal cephalopod communities in the Mediterranean: a large-scale analysis. Marine Ecology Progress Series, 584, 105-118. Publisher's official version : https://doi.org/10.3354/meps12342 , Open Access version : https://archimer.ifremer.fr/doc/00417/52835/