1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia

Opción 1: Descargar recurso

Opción 2: Descargar recurso

Detalles del recurso


The Mediterranean Sea is characterized by large scale gradients of temperature, productivity and salinity, in addition to pronounced mesoscale differences. Such a heterogeneous system is expected to shape the population dynamics of marine species. On the other hand, prevailing environmental and climatic conditions at whole basin scale may force spatially distant populations to fluctuate in synchrony. Cephalopods are excellent case studies to test these hypotheses owing to their high sensitivity to environmental conditions. Data of two cephalopod species with contrasting life histories (benthic octopus vs nectobenthic squid), obtained from scientific surveys carried out throughout the Mediterranean during the last 20 years were analyzed. The objectives of this study and the methods used to achieve them (in parentheses) were: i) to investigate synchronies in spatially separated populations (decorrelation analysis); ii) detect underlying common abundance trends over distant regions (dynamic factor analysis, DFA); and iii) analyse putative influences of key environmental drivers such as productivity and sea surface temperature on the population dynamics at regional scale (general linear models, GLM). In accordance with their contrasting spatial mobility, the distance from where synchrony could no longer be detected (decorrelation scale) was higher in squid than in octopus (349 vs 217 km); for comparison, the maximum distance between locations was 2620 km. The DFA revealed a general increasing trend in the abundance of both species in most areas, which agrees with the already reported worldwide proliferation of cephalopods. DFA results also showed that population dynamics are more similar in the eastern than in the western Mediterranean basin. According to the GLM models, cephalopod populations were negatively affected by productivity, which would be explained by an increase of competition and predation by fishes. While warmer years coincided with declining octopus numbers, areas of high sea surface temperature showed higher densities of squid. Our results are relevant for regional fisheries management and demonstrate that the regionalisation objectives envisaged under the new Common Fishery Policy may not be adequate for Mediterranean cephalopod stocks.

Pertenece a

ArchiMer, Institutional Archive of Ifremer (French Research Institute for Exploitation of the Sea)  


Keller, Stefanie -  Quetglas, Antoni -  Puerta, Patricia -  Bitetto, Isabella -  Casciaro, Loredana -  Cuccu, Danila -  Esteban, Antonio -  Garcia, Cristina -  Garofalo, Germana -  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 -  Hidalgo, Manuel - 

Id.: 70993687

Idioma: eng  - 

Versión: 1.0

Estado: Final

Tipo:  application/pdf - 

Palabras claveCephalopods - 

Tipo de recurso: Texto Narrativo  -  Publication  -  info:eu-repo/semantics/article  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: 2017 Elsevier Ltd. All rights reserved.

Formatos:  application/pdf - 

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Progress In Oceanography (0079-6611) (Pergamon-elsevier Science Ltd), 2017-03 , Vol. 152 , P. 1-14

Fecha de contribución: 14-feb-2018


* DOI:10.1016/j.pocean.2016.12.010

Otros recursos del mismo autor(es)

  1. Deporte escolar y trastornos de la conducta alimentaria Ciertos deportes están asociados a riesgos de presentar una alimentación desordenada, sin embargo, s...
  2. Relationship among sociodemographic and sport variables, exercise dependence, and burnout: a preliminary study in athletes The aim of the study was to determine the prevalence of exercise dependence and athlete burnout and ...
  3. Settlement and post-settlement survival rates of the white seabream (Diplodus sargus) in the western Mediterranean Sea International audience
  4. Efecto de la severidad del fuego en la producción de corcho En el contexto del proyecto GEPRIF, se está realizando un estudio del efecto de la severidad del fue...
  5. ArTube UCM Proyecto de Innovación docente destinado a convertir la plataforma YOUTUBE en instrumento de innovac...

Otros recursos de la mismacolección

  1. Tuna labels matter in Europe: Mislabelling rates in different tuna products Tuna fisheries and processing represent economic activities of paramount importance around the world...
  2. Impact d’une obligation de débarquement sur les dynamiques couplées écosystème-pêcheurs : approche par modélisation individu-centrée appliquée à la Manche orientale The objective of this thesis was to anticipate the effects if the EU Landing Obligation (LO) impleme...
  3. Ocean current connectivity propelling the secondary spread of a marine invasive comb jelly across western Eurasia Aim Invasive species are of increasing global concern. Nevertheless, the mechanisms driving further ...
  4. Occurrence and effects of plastic additives on marine environments and organisms: A review Plastics debris, especially microplastics, have been found worldwide in all marine compartments. Muc...
  5. Multifaceted biodiversity hotspots of marine mammals for conservation priorities Aim Identifying the multifaceted biodiversity hotspots for marine mammals and their spatial overlap ...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.