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

Descripción

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)  

Autor(es)

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

Contacto:

Localización:
* DOI:10.1016/j.pocean.2016.12.010

Otros recursos del mismo autor(es)

  1. Towards the Digital Encoding of Hispanic White Mensural Notation In this work, the elements necessary for digitally encoding music contained in manuscripts from the ...
  2. Study of selenium sorption processes in volcanic ash using Total Reflection X-ray Fluorescence (TXRF) International audience
  3. Innovación y análisis masivo de datos en la era digital: una aproximación al negocio asegurador y a la ciencia actuarial En el año 2016 ha comenzado el despliegue generalizado en la utilización de datos masivos (Big Data)...
  4. Inclusion of ecological, economic, social, and institutional considerations when setting targets and limits for multispecies fisheries Targets and limits for long-term management are used in fisheries advice to operationalize the way m...
  5. Relación entre optimismo y rendimiento deportivo. Revision sistemática El optimismo es un factor psicológico moderador en el rendimiento deportivo. El objetivo de este tra...

Otros recursos de la mismacolección

  1. Interim Report of the Working Group on Multispecies Assessment Methods (WGSAM), 16–20 October 2017, San Sebastian, Spain The pan-regional Working Group on Multispecies Assessment Methods (WGSAM) met in San Sebastian, Spai...
  2. Stabilising selection on immune response in male black grouse Lyrurus tetrix Illnesses caused by a variety of micro- and macro- organisms can negatively affect individuals' fitn...
  3. Entangled fates of holobiont genomes during invasion: nested bacterial and host diversities in Caulerpa taxifolia Successful prevention and mitigation of biological invasions requires retracing the initial steps of...
  4. Benthic impact of fisheries in European waters: the distribution and intensity of bottom trawling Mapping and monitoring of pressure from fishery on the marine benthic environment is necessary to su...
  5. Microsatellite techique on Pacific oyster: Crassostra gigas The microsatellites markers are developed for somme years now (Tautz & Renz, 1984). The high degree ...

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.