https://ir.library.oregonstate.edu/downloads/1c18dg83q

The science of European marine reserves: Status, efficacy, and future needs

Spearfishing pressure on fish communities in rocky coastal habitats in a Mediterranean marine protected area

The management of recreational fishing requires resolving conflicting interests and is thus among the most controversial natural resource related issues. Decision making is difficult because of two main factors: first, there is lack of prediction tools that help managers and other stakeholders assess the potential impacts of management changes; second, decisions or management strategies affect multiple social and ecological outcomes and picking the best among sets of multiple outcomes is a complex task. Resource management and stakeholder dialogue can be greatly improved by addressing these problems. In this paper, we propose a decision support system (DSS) for assessing management strategies. The DSS incorporates an integrated agent-based simulation model for tackling the first obstacle and an analytical hierarchy process (AHP)-fuzzy comprehensive evaluation approach to facilitate multi-criteria decision making. The agent-based simulation model incorporates recreational fishing behaviour within a reef ecosystem. Angler behaviour is driven by empirically estimated site choice models which link recreational choices to site attributes and angler characteristics. Coral reef ecosystem dynamics is modelled using a trophic-dynamic model describing the relationship among fish populations, fishing activities as well as algal and coral growth. The second component of the DSS, the AHP-fuzzy comprehensive evaluation part, allows one to combine resource managers' preferences with simulated economic and ecosystem outcomes in the assessment of alternative strategies. A fuzzy multi-criteria, multi-layer evaluation method is used to obtain final ranking. As a case study for this paper, we focus on the management of recreational fishing sites from the Ningaloo Marine Park, an iconic coral reef system in Western Australia. A set of management strategies, including a ''business-as-usual'' strategy and alternative site closure strategies are assessed using the proposed DSS. The site closure strategies evaluated vary in length and timing. Further, these evaluations are undertaken for two fishing pressure scenarios (high and low). We illustrate the usefulness of the DSS by evaluating these strategies. We also present some results from a sensitivity analysis focussing on changes in preferences.

Ranking management strategies with complex outcomes: An AHP-fuzzy evaluation of recreational fishing using an integrated agent-based model of a coral reef ecosystem

Recreational shore fishing along 250 km of the south and south-west coast of Portugal was studied based on roving creel and aerial surveys. Surveys were conducted between August 2006 and July 2007, following a stratified random-sampling design and provided information on catch and effort, harvest and discards, angler demographics and fishing habits. Overall, 192 roving creel surveys, 24 aerial surveys and 1321 interviews were conducted. Based on the aerial surveys, a mean +/-s.e. total fishing effort of 705,236 +/- 32,765 angler h year(-1) was estimated, corresponding to 166,430 +/- 9792 fishing trips year(-1). Average time spent per fishing trip was 4.7 h. A total of 48 species, belonging to 22 families, were recorded in roving creel surveys. The most important species was Diplodus sargus, accounting for 44% of the total catches by number and 48% by mass. Estimated mean +/-s.e. total annual recreational shore fishing catch was 160.2 +/- 12.6 t year(-1) (788,049 +/- 54,079 fishes year(-1)), of which 147.4 +/- 11.9 t year(-1) (589,132 +/- 42,360 fishes year(-1)) was retained. Although overall shore-based recreational catches only corresponded to 0.8% of the commercial landings (only common species considered), D. sargus catches by recreational shore anglers were considerable, corresponding to 65% of the commercial landings. The implications of these results for integrated fisheries management and conservation are discussed, and future research proposed.

Quantifying recreational shore angling catch and harvest in southern Portugal (north-east Atlantic Ocean): implications for conservation and integrated fisheries management.

Small-scale coastal fisheries in European Seas are not what they were: Ecological, social and economic changes

Biological and socioeconomic implications of recreational boat fishing for the management of fishery resources in the marine reserve of Cap de Creus (NW Mediterranean)

Impacts of recreational boating on the marine environment of Cap de Creus (Mediterranean Sea)

En aquest article s'analitza l'impacte biologic de cadascuna de les modalitats de pesca recreativa (pesca des d'una embarcacio, pesca des de les roques, marisqueig i pesca submarina) sobre les especies costaneres del cap de Creus i es determina les caracteristiques socioeconomiques d'aquesta activitat d'esbarjo

/pdf/pesca-maritima-recreativa-i-conservacio-dels-peixos-litorals-3eyg47qxch.pdf

Núria Zaragoza

Papers

Spearfishing pressure on fish communities in rocky coastal habitats in a Mediterranean marine protected area

Biological and socioeconomic implications of recreational boat fishing for the management of fishery resources in the marine reserve of Cap de Creus (NW Mediterranean)

Impacts of recreational boating on the marine environment of Cap de Creus (Mediterranean Sea)

Pesca marítima recreativa i conservació dels peixos litorals: el cas del cap de Creus