Large-scale spatio-temporal patterns of Mediterranean cephalopod diversity
|Author(s)||Kellerhttps://w3.Ifremer.Fr/archimer-Admin/author.Jsp# Stefanie1, Bartolino Valerio2, Hidalgo Manuel1, Bitetto Isabella3, Casciaro Loredana3, Cuccu Danila4, Esteban Antonio5, Garcia Cristina6, Garofalo Germana7, Josephides Marios8, Jadaud Angelique9, Lefkaditou Evgenia10, Maiorano Porzia11, Manfredi Chiara12, Marceta Bojan13, Massut Enric1, Micallef Reno14, Peristeraki Panagiota15, Relini Giulio16, 17, Sartor Paolo18, Spedicato Maria Teresa3, Tserpes George15, Quetglas Antoni1|
|Affiliation(s)||1 : Inst Espanol Oceanog, Ctr Oceanog Baleares, Palma De Mallorca 07015, Spain.
2 : SLU Swedish Univ Agr Sci, Dept Aquat Resources, Lysekil, Sweden.
3 : COISPA Tecnol & Ric, Stn Sperimentale Studio Risorse Mare, Bari, Italy.
4 : Univ Cagliari, Dipartemento Sci Vita & Ambiente, IEO, Cagliari, Italy.
5 : Ctr Oceanog Murcia, Murcia, Spain.
6 : Ctr Oceanog Malaga, IEO, Malaga, Spain.
7 : CNR, IAMC Coastal Marine Environm Inst, Mazara Del Vallo, TP, Italy.
8 : Minist Agr Rural Dev & Environm, DFMR, Nicosia, Cyprus.
9 : IFREMER, UMR Ecosyst Marins Exploites EME 212, Sete, France.
10 : HCMR, Athens, Greece.
11 : Univ Bari Aldo Moro, Dept Biol, Bari, Italy.
12 : Univ Bologna, Lab Biol Marina & Pesca, Fano, PS, Italy.
13 : Fishery Res Inst Slovenia, Ljubljana, Slovenia.
14 : Minist Sustainable Dev, Dept Fisheries & Aquaculture, Marsa, Malta.
15 : HCMR, Iraklion, Crete, Greece.
16 : SIBM, Genoa, Italy.
17 : Univ Genoa, DISTAV, Genoa, Italy.
18 : CIBM Ctr Interuniv Biol Marina & Ecol Appl, Livorno, Italy.
|Source||Plos One (1932-6203) (Public Library Science), 2016-01 , Vol. 11 , N. 1 , P. e0146469.|
|WOS© Times Cited||7|
|Abstract||Species diversity is widely recognized as an important trait of ecosystems’ functioning and resilience. Understanding the causes of diversity patterns and their interaction with the environmental conditions is essential in order to effectively assess and preserve existing diversity. While diversity patterns of most recurrent groups such as fish are commonly studied, other important taxa such as cephalopods have received less attention. In this work we present spatio-temporal trends of cephalopod diversity across the entire Mediterranean Sea during the last 19 years, analysing data from the annual bottom trawl survey MEDITS conducted by 5 different Mediterranean countries using standardized gears and sampling protocols. The influence of local and regional environmental variability in different Mediterranean regions is analysed applying generalized additive models, using species richness and the Shannon Wiener index as diversity descriptors. While the western basin showed a high diversity, our analyses do not support a steady eastward decrease of diversity as proposed in some previous studies. Instead, high Shannon diversity was also found in the Adriatic and Aegean Seas, and high species richness in the eastern Ionian Sea.
Overall diversity did not show any consistent trend over the last two decades. Except in the Adriatic Sea, diversity showed a hump-shaped trend with depth in all regions, being highest between 200-400 m depth. Our results indicate that high Chlorophyll a concentrations and warmer temperatures seem to enhance species diversity, and the influence of these parameters is stronger for richness than for Shannon diversity.