- Title
- Scomber scombrus (Atlantic mackerel) recruits
- Abstract
Persistent habitat map of juvenile mackerel (Scomber scomber) in the Mediterranean Sea for the early summer period 2001–2010.
Nursery areas have been assessed in the framework of MAREA-MEDISEH Project through habitat suitability modeling, relating abundance information from surveys with environmental variables.
- Publication Date
- Sept. 1, 2014, 3:08 p.m.
- Type
- Vector Data
- Category
- Environment and Ecosystems
- Data related to environment and ecosystems
- Owner
- MEDISEH
- Maintenance Frequency
- There Are No Plans To Update The Data
- Restrictions
- This shapefile was provided by MAREA Consortium (framework contract MARE/2009/05 - Lot 2 (MEDISEH)) to be used inside ADRIPLAN Project. The geographical information is provided "as it is", and no warranty of any kind (express, implicit) is offered as to the information's accuracy. The information provided does not imply any opinion of the developers concerning the legal status of any country, territory or area, or concerning the delimitation of its frontiers or boundaries. The data cannot be used for legal, commercial (e.g. exploration of natural resources, consultancy work) or for navigational purposes. It is clarified that the raw data collected or provided to the consortium for the purposes of MEDISEH, are not allowed to be redistributed or provided to third parties (under any format e.g. GIS Shape files) for any reason, without the permission of the original data provider. Fisheries data collected within the Data Collection Framework cannot be redistributed for any reason. To access project's meta-analysis data (i.e. model output), please send a request to MEDISEH scientific coordinator and to the MAREA scientific coordinator (request form: http://mareaproject.net/medviewer/registration/register/). Please note that the request will also be forwarded to DG-MARE, for final approval by the European Commission Services. It has also to be recalled the provisions of Article II.10.3 of the Framework Contract: "Any distribution or publication of information relating to the Contract by the Contractor shall require prior written authorization from the Commission and shall mention the amount paid by the Union. It shall state that the opinions expressed are those of the Contractor only and do not represent the Commission's official position". The project's final report can be found at http://mareaproject.net/contracts/5/reporting/ (Mediterranean Sensitive Habitats (MEDISEH) (2013). Final report. Edited by M. Giannoulaki, A. Belluscio, P. Panayotidis, S. Fraschetti, M. Scardi, F. Colloca, C. Smith, V. Valavanis, M.T. Spedicato. DG MARE Specific Contract SI2.600741, Final Report, 557 p. Heraklion (Greece): Hellenic Centre for Marine Research.)
- Purpose
Objectives:
- Review and map all existing information on historical and current data of nurseries and spawning grounds of certain small pelagic (i.e., Engraulis encrasicolus, Sardina pilchardus, Scomber spp., Trachurus spp) that are included in the Data Collection Framework for the Mediterranean and subjected to minimum landing size based on Council Regulation No 1967/2006-Annex II
- Analyze existing survey data and apply spatial analysis techniques in order to identify locations that are more likely to be density hot spot areas or are being more suitable for fish nurseries and spawning grounds for Engraulis encrasicolus, Sardina pilchardus, Scomber spp., Trachurus trachurus, Trachurus mediterraneus. These areas will also be characterized from an environmental and ecological perspective upon data availability.
- Integrate and present the aforementioned information through a web based GIS viewerwith an associated geo-referenced database that will operate as a consulting tool for spatial management and conservation planning.- Language
- English
- Supplemental Information
Model obtained applying habitat suitability modeling techniques and using environmental data in order to obtain an idea of potential spawning grounds throughout the Mediterranean Sea and analyze persistent spawning areas based on annual distribution maps.
The model for juvenile Scomber scombrus occurrence was developed using Maxent default settings but randomly setting aside 25% of presence points for model validation. The Maximum Entropy Model (MAXENT –Philips et al. 2006) was applied as appropriate due to the very small number of available presence data that impaired other statistical approaches not suitable to apply.
Persistence maps describe preferential (high mean, low std), occasional (high mean, high std) and rare (low mean, low std) juvenile grounds and up to 400 m depth.- Spatial Representation Type
- vector data is used to represent geographic data
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