Suchergebnisse

Length-weight relationships (LWR) of twelve fish species collected by fish pots (half an inch mesh size), bottom horizontal longlines (hook size 3/0) and set gillnets (80 mm mesh size) from two Marine Protected Areas in the Canary Islands were determined using individual fish records collected at least once a year during ten scientific surveys between 2003 and 2010, excluding 2007. Fish was measured fresh for the total length (to the lower 0.1 or 0.5 cm, depending on the scientific surveys design) and weighted for the total weight (TW, to the 0.1 g). With the exception of Bathytoshia centroura with a b-value of 1.77, the LWR parameter b ranged between 2.71 (Heteropriacanthus cruentatus (Lacepède, 1801)) and 3.86 (Gymnothorax maderensis (Johnson, 1862)). All LWRs were obtained from well-adjusted linear regressions with R2 ≥0.74. In addition, six new maximum lengths were recorded for six of the sampled species. Data presented herein expand the knowledge base for these species in the Archipelago, as they have limited or no LWR data available ; The present study was performed in the framework of Specific Collaboration Agreements between the IEO and Spain's Fishery Office from 2003 to 2010 with the aid of European Maritime and Fisheries Funds (EMFF). Authors wanted to thank to the crews involved in the surveys, the scientific observers on board, the MPAs Coordination and Surveillance Services, to the Fishermen's Guilds of La Graciosa, San Ginés, Tazacorte and Santa Cruz de La Palma, the national and regional governments staff, and the Canary Oceanographic Center of the Canary Islands who helped to a greater or lesser extent in the process of the field work. ; Postprint

Two large areas belonging to the Canary Islands marine demarcation are part of the Natura 2000 network as Sites of Community Importance (SCI): "ESZZ15001-Banco de la Concepción" (total area 609,721.92 ha; depth range 158-2,687 m) and "ESZZ15002-Espacio marino del oriente y sur de Lanzarote y Fuerteventura" (total area 1,433,248.92 ha; depth range 0-3,300 m). Within the framework of the LIFE INTEMARES IP project, Action A.2.1, and before the designation of these two SCIs as Special Areas of Conservation, the Spanish Institute of Oceanography (IEO) is responsible for completing information necessary for the development of management plans. In the present study, a general analysis of the biodiversity of the two SCIs is carried out, starting from the updated catalogs, based mainly on previous IEO research and on information from the Canary Islands Biodiversity Data Bank, a comprehensive database of the Regional Government that draws on all current and historical information, backed by documents supervised by specialists. Special emphasis is placed on protected species and habitat forming species, which are considered key elements for management. ; Dos grandes zonas de la demarcación marina de las islas Canarias forman parte de la Red Natura 2000 como Lugares de Importancia Comunitaria (LIC): "ESZZ15001-Banco de la Concepción" (área total 609.721,92 ha; rango de profundidad 158-2.687 m) y "ESZZ15002-Espacio marino del oriente y sur de Lanzarote y Fuerteventura" (área total 1.433.248,92 ha; rango de profundidad 0-3.300 m). El Instituto Español de Oceanografía (IEO) ha sido encargado de completar la información necesaria para el desarrollo de los planes de gestión, como paso previo a la declaración de estos LIC como Zonas de Especial Conservación, en el marco del proyecto LIFE IP INTEMARES, Acción A.2.1. En el presente trabajo se realiza un análisis general de la biodiversidad de los dos LIC, partiendo de los catálogos actualizados, basados principalmente en investigaciones previas del IEO y en la información del Banco ...

Sur de Fuerteventura is one of the areas chosen to be depicted in the frame of INDEMARES project. The midpoint of the study area is located at 25 km from Fuerteventura and 65 km from Gran Canaria. The main aim of the project was to end up with an inventory and mapping of habitats and fisheries footprint off the study area, information which would let the administrations to establish a new Natura 2000 area, trying to reconcile protection of biodiversity with artisanal local economic activities. Methodology approach complies with a multidisciplinary perspective, having described the area from geological, oceanographic, biological and fisheries points of view. Several surveys have taken place since 2009 to 2013 at Amanay and El Banquete waters. Data from VMS (Vessel Monitoring System) were used, combined with interviews to users (fishers), sampling at landing points and onboard observation programs, to describe the fishery uses in the area. Thirteen different types of communities have been identified as "Habitat 1170, Reefs", following Annex 1 from Habitats Directive (Council Directive 92/43/CEE) from European Union. All of them have three dimensional structure and species with certain size turning these areas into important containers of biodiversity and hot spots for shelter. About protected species by Habitats Directive, Centrostephanus longispinus (Philippi, 1845) belongs to Annex IV. Chilomycterus reticulatus (Linnaeus, 1758) is included in the Canary Islands Catalog of Protected Species as a vulnerable species. Within the Red List of Threatened Species of the International Union for the Conservation of Nature, we can find several fishes as endangered species, Squatina squatina (Linnaeus, 1758) as critically endangered, while in the area can also be found several vulnerable species, special importance have several elasmobranchs species. Subsequent studies about deep water white corals Lophelia pertusa (Linnaeus, 1758) and Madrepora oculata Linnaeus, 1758, present in the study area, could conclude with these ...