Marine Protected Areas
as tools for
Fisheries
management and conservation

Home
Friday, 21 January 2022
WP1 Ecological effects of MPAs Print E-mail
The workpackage will target into identifing and quantifing ecological effect of MPA and producing a field database for subsequent global meta-analysis and modelling. Cessation or reduction of fishing mortality as a result of protection will promote the increase of the abundance as well as the mean age of the population. While being the basis, on a biological perspective, the reserve effect have been described throughout 5 main processes resulting from the increase of the abundance and the mean age: (i) density-dependence, (ii) enhancement of recruitment sources, (iii) genetic effect, (iv) habitat effect, and (v) cascade (indirect) effect. We will consider this framework in identifying main parameters necessary to describe ecological effect of MPA, in relation to what seems important in a fisheries perspective. Therefore we are planning the following tasks:

 

  1. – List and identify the data required for subsequent development of bio-indicators and bio-economic modelling. Such initial action will be done through a workshop that will involve partners in charge of developing bio-indicator and modelling, as well as management tools; that is the final goal of the project.
  2. – List and identify (i) no-take zones, (ii) partial reserves, and (iii) species-oriented reserves that will be used as model. Some protected areas have benefit of special focus in several previous research programs (driven by the European Community or not) and we will focus on these ones first since significant amount of data can be available.
  3. – Develop a database model for compiling biological data. We propose the development of a special database framework for compiling data issued from MPA survey.
  4. – Compile biological and ecological data available regarding reserve effect in the most studied European MPAs and considering the major management regimes: (i) no-take zones, (ii) partial reserves, and (iii) species-oriented reserves. Case studies will be analysed considering: (i) density-dependence (evidence from abundance, demographic structure, intra-specific competition and predation), (ii) enhancement of recruitment sources (reproductive potential, biomass export, egg and larval export), (iii) genetic effect, (iv) habitat effect, and (v) cascade (indirect) effect on assemblage structure and biocenoses.
  5. – Complete dataset with specific and targeted collections of field data following the identification of
  6. major lacks requires for further global analysis and comparisons of case-studies. In any case, the collection of data only need to be minor and for completion of subsequent dataset.
  7. – Meta-analysis exploration to compare large dataset and identify common trends. We will only consider here analysis required to determine ecological effect. Such analysis will be relate to quantifying (i) density-dependence, (ii) enhancement of recruitment sources, (iii) genetic effect, (iv) habitat effect, and (v) cascade (indirect) effect.

 

Case studies will be analysed considering (each task will constitute a working group):

 

(a) Demographic and population effects (focus on relevant, well-studied, species: Diplodus sargus, Epinephelus marginatus, Mullus surmuletus, Scorpaena spp, Sparisoma cretense, Serranus atricauda, Mycteroperca fusca, Gadus morhua, Pleuronectes platessa, Palinurus elephas, Nephrops norvegicus, Patella spp, etc.): abundance, demographic structure, reproductive potential, biomass export, egg and larval export, intra-specific competition and predation, density-dependent responses, habitat selection, feeding strategies, behavioural effects...

(b) Genetics effects (focus on relevant, well-studied, species: Diplodus sargus, other?)

(c) Assemblage effects: assemblage structure, species richness, species diversity, taxonomic diversity, trophic structure, aggregated biomass export...

(d) Indirect effects on habitats and biocoenoses (e.g. rocky bottoms, maërl, seagrass meadows, etc.): cascade effects, impacts of other uses (e.g. diving, mooring, etc.)

European Union
Sixth Framework Programme