Direccio General de Pesca

Palma, Spain

Direccio General de Pesca

Palma, Spain
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Alvarez-Berastegui D.,Spanish Institute of Oceanography | Amengual J.,Espais de Natura Balear Parc Nacional de Cabrera | Coll J.,Direccio General de Pesca | Renones O.,Spanish Institute of Oceanography | And 2 more authors.
Journal for Nature Conservation | Year: 2014

A method is described for rapid multidisciplinary environmental assessment of coastal areas within the conceptual framework of comprehensive management of Marine Protected Areas (MPAs). The aim is to provide tools for the selection, design and management of coastal MPAs when time, budget or potential human pressures, either alone or in combination, create an urgent need for prioritisation. Maximising results and minimising cost and time is the goal, using a methodology that re evaluates existing information on the area, allows use of physical, environmental and socio-economic indicators, and finally integrates information in a Geographic Information System capable of generating outputs in the form of thematic maps to support managers.The final products obtained inform planners and managers about the study areas, across multiple aspects that all need to be considered in integrated coastal management. Although originally proposed for widespread use in the Mediterranean, this methodology can be flexibly adapted, with minor modifications in the selection of indicators, for its use in other regions. The results show its potential for merging and synthesising information not only as a tool in Rapid Assessment Programs but also as a tool for facing management of wide coastal areas as social-ecological ecosystems. © 2013 Elsevier GmbH.

Quetglas A.,Spanish Institute of Oceanography | Merino G.,Tecnalia | Merino G.,Plymouth Marine Laboratory | Ordines F.,Spanish Institute of Oceanography | And 5 more authors.
Ocean and Coastal Management | Year: 2016

Nearly 75% of European fishing vessels belongs to small-scale fisheries (SSF). However, SSF have received little attention compared to industrial fisheries. In the Mediterranean Sea, where the SSF traditionally had a high socio-economic relevance, there is a widespread interest in securing its sustainable exploitation and viability. Here we analyze the SSF from Mallorca (Balearic Islands) using fishery statistics from the last 25 years (1990–2014). Although fleet size declined markedly (−55%), landings remained constant which might be related to different, not mutually exclusive explanations such as a decrease in unreported catches, stagnant and closed market or technological creeping. Multivariate analysis revealed eight different fishing tactics corresponding to the main target species. Aggregated, these eight species accounted for 52% and 71% of SSF landings weight and value, respectively. The fishery of these species is markedly seasonal and the landings of most of them showed important fluctuations but no clear trends. In contrast with the claims of SSF having lower impact on the natural resources than other fisheries, surplus production models revealed a generalized overexploitation of these target stocks, especially for the most high-valued species. Simulations with a bioeconomic model showed that fishing effort reductions of 38% would improve the health of fish stocks while increasing the economic profits to as much as 15% from current profits. If all stocks were kept below their MSY level, the reduction in fishing effort would have to be of 53% from current values. If the economic yield from the fishery was to be maximized (MEY), fishing effort would need to be reduced by 28%. Owing to important quantities of unreported catches in the most high-valued species, output values of the stock status indicators and the bioeconomic modelling should be taken with care beyond tracking trends in the fishery. © 2016 Elsevier Ltd

Hendriks I.E.,CSIC - Mediterranean Institute for Advanced Studies | Tenan S.,CSIC - Mediterranean Institute for Advanced Studies | Tenan S.,University of Pavia | Tavecchia G.,CSIC - Mediterranean Institute for Advanced Studies | And 6 more authors.
Biological Conservation | Year: 2013

The decline of important coastal habitats, like seagrass meadows, is likely to influence populations of associated species, like the noble pen shell, Pinna nobilis. Here we used a Bayesian formulation of individual covariate models to derive a reliable estimate of populations of P. nobilis in shallow, and thus usually most impacted, areas around the island of Majorca, Balearic Islands, Spain. At six evaluated sites we find quite distinct densities ranging from 1.4 to 10.0 individuals/100m2. These differences in density could not be explained by habitat factors like shoot density and meadow cover, nor did dislodgement by storms (evaluated by maximum wind speeds at the sites) seem to play an important role. However, noble pen shell density was related to anchoring as at sites where anchoring was not permitted the average density was 7.9 individuals/100m2 while in sites where ships anchored the density was on average 1.7 individuals/100m2. As for the conservation of Posidonia oceanica meadows, for the associated population of P. nobilis it would be of utmost importance to reduce anchoring pressure as a conservation measure for these endangered and protected bivalves. © 2013 Elsevier Ltd.

Box A.,University of the Balearic Islands | Deudero S.,Spanish Institute of Oceanography | Blanco A.,University of the Balearic Islands | Grau A.M.,Direccio General de Pesca | Riera F.,Direccio General de Pesca
Journal of Fish Biology | Year: 2010

In the present study, Xyrichtys novacula (Labridae) were sampled at five locations around the islands of Ibiza and Formentera (western Mediterranean Sea). Isotopic signatures of δ13C, δ15N and the C:N ratio were analysed in relation to locality, sex and size differences. δ13C and δ15N partitioning was also studied in the reproductive spawning period. There were significant differences in the δ13C signature between localities for both sexes, but not for δ15N. Sex differences were also found with a mean ±s.e. value of -17·38 ± 0·06‰ δ13C and 8·36 ± 0·05‰ δ15N for females and -17·17 ± 0·07‰ δ13C and 8·80 ± 0·06‰ delta;15N for males. Increasing total length in both sexes was positively correlated with δ15N enrichment and a significant positive linear regression was established for both variables. During the reproductive spawning period, there were changes in δ13C fractioning with enrichment in postspawning females and males (with respect to prespawning and spawning periods) and δ15N impoverishment in postspawning females (with respect to prespawning and spawning periods). Xyrichtys novacula uses local food sources, as confirmed by δ13C and δ15N, and females and males use different food sources, thus avoiding intraspecific competition. This was confirmed by δ15N enrichment as size increased. Spawning leads to special requirements for gonad maturation, which is reflected in the isotopic signatures for both sexes. © 2010 The Authors. Journal compilation © 2010 The Fisheries Society of the British Isles.

Morales-Nin B.,CSIC - Mediterranean Institute for Advanced Studies | Cardona-Pons F.,CSIC - Mediterranean Institute for Advanced Studies | Maynou F.,CSIC - Institute of Marine Sciences | Grau A.M.,Direccio General de Pesca
Fisheries Research | Year: 2015

Both resident and non-resident anglers (tourists) practice recreational fishing in Majorca (Balearic Islands, western Mediterranean). We present the results of two surveys designed with the objective of estimating the expenses incurred by anglers in recreational fishing and describing their motivation for fishing. A mail survey targeted resident anglers, and two intercept surveys targeted tourist anglers (in the mass tourism and nautical tourism sectors). The main motivation for resident anglers was enjoying tranquility, followed by catch consumption. For tourists, fishing was not the motivation for visiting Majorca. The expenditure of resident recreational anglers is estimated to be 57 million Euro (1% of the Majorcan economy). The number of tourists practicing recreational fishing was low, but their catch was estimated to encompass 16% of the total commercial coastal fishery catch. In addition, the economic value added through fishing expenditure may be 6 million Euro due to the large number of tourists visiting Majorca. The amount of catch in weight by all anglers combined was significant (43% of the catch in weight of commercial coastal fisheries) and should be considered in the management of coastal fisheries in the Balearic Islands and elsewhere in the Mediterranean where recreational fishing is important. © 2014.

Maynou F.,CSIC - Institute of Marine Sciences | Morales-Nin B.,CSIC - Mediterranean Institute for Advanced Studies | Cabanellas-Reboredo M.,CSIC - Mediterranean Institute for Advanced Studies | Palmer M.,CSIC - Mediterranean Institute for Advanced Studies | And 2 more authors.
Fisheries Research | Year: 2013

Small-scale fisheries in Europe face an uncertain situation from different pressures that undermine its social and economic viability in the near future. We investigate the issue of sustainability and options for future development of small-scale fisheries by means of a case study in Majorca (Balearic Islands; W Mediterranean). We analysed the socio-economic status of this small-scale fishery by means of economic indicators derived from data obtained through questionnaires. Our results show that the economic profitability of this activity is low and that, under the current economic situation small-scale, fishing has limited attractiveness, a situation similar to other Mediterranean small-scale fisheries. However, as a producer of high-quality fresh fish fetching comparatively high prices, small-scale fishing should have a viable future if the factors identified as responsible for the low economic viability could be redressed (such as excessive fishing pressure on the resource because it is shared with other commercial or recreational fishers; inadequate pricing system). Reducing the conflicts with other users of the coastal zone, by appropriate spatial zonation (combined with the already existing network of MPAs), is a measure that receives a favourable opinion from professional fishers, while diversifying the activity by combining professional fishing with tourism-fishing is less attractive to professional fishers in the Majorca Island. This model of development is both acceptable to the stakeholders involved in the fishery and in line with current European policies (Marine Strategy Framework directive) which favour forms of spatial planning as fisheries management measures. © 2012 Elsevier B.V.

Occurrence of rainbow wrasse males, Coris julis, with Atlantic coloration at the Balearic islands is presented, on the basis of material collected from Mallorca and Ibiza islands. Morphological and meristic characters of six specimens are presented. Also, the apparent spread of its distribution range is commented and several hypothesis that could explain this phenomena are discussed.

Alos J.,CSIC - Mediterranean Institute for Advanced Studies | Palmer M.,CSIC - Mediterranean Institute for Advanced Studies | Balle S.,CSIC - Mediterranean Institute for Advanced Studies | Grau A.M.,Direccio General de Pesca | Morales-Nin B.,CSIC - Mediterranean Institute for Advanced Studies
ICES Journal of Marine Science | Year: 2010

Variability in growth patterns at an individual level in Serranus scriba is described using a Bayesian approach for a generalized von Bertalanffy growth model that accommodates one change in growth rate at a specific point during the lifespan. The approach enables individual growth curves to be inferred, even in a species with a relatively short lifespan and no commercial value, i.e. limited sample sizes available, but potentially endangered by recreational fishing. The change in growth rate may be the result of differing allocation of energy between reproductive and somatic activities at different ages. Overall, the approach presented provides adequate input for future implementation of population dynamics models that take into account individual variability, e.g. individual-based models, even for species for which limited data are available. © 2009 International Council for the Exploration of the Sea.

Morales-Nin B.,CSIC - Mediterranean Institute for Advanced Studies | Cardona-Pons F.,CSIC - Mediterranean Institute for Advanced Studies | Grau A.M.,Direccio General de Pesca | Garcia E.,CSIC - Mediterranean Institute for Advanced Studies | And 2 more authors.
British Food Journal | Year: 2013

Purpose: The purpose of this paper is to provide a profile of fresh fish consumers and analyze trends in their choices of fresh fish. In addition, this study investigates whether being an active practitioner of angling or whether belonging to a household with angling activity has an effect on consumers' choices. Design/methodology/approach: Consumers' habits, profiles, and perceptions were obtained from randomized personal interviews (n=395) at traditional markets (the main source of fresh fish for Spaniards) and from interviews with restaurant managers (n=11) carried out on Mallorca Island, in the West Mediterranean, in 2009. Findings: A wide range of middle-aged and middle-class residents consumed fresh fish. The residents in the sample preferred to buy fish in traditional retail markets and consumed fish at least once a week, including a wide range of species. Consumers were satisfied with the quality of the fish but were moderately unsatisfied with the information that they received about the fish and fisheries. Although fish price was a factor in decisions to purchase, consumers were willing to pay more for local products of good quality. A significant proportion of individuals in the sample were themselves recreational fishers or belonged to households with recreational fishing members. These individuals shared a different consumer profile, tending to prefer local species that come at higher prices. A parallel survey of fish restaurants showed differences in preferred species depending on customers' place of residency and nationality. Practical implications: The consumer trends that were identified and the perception of fresh fish captured by local fleets might have implications for commercialization and fishery management. Originality/value: This is the first study of consumer choice related to leisure activity in a country with a very high rate of fish consumption. © Emerald Group Publishing Limited.

Cerda M.,Direccio General de Pesca | Alos J.,CSIC - Mediterranean Institute for Advanced Studies | Palmer M.,CSIC - Mediterranean Institute for Advanced Studies | Grau A.M.,Direccio General de Pesca | Riera F.,Direccio General de Pesca
Fisheries Research | Year: 2010

Enforcing a minimum legal fish size is a possible policy rule for managing recreational fisheries. However, success of such rules highly depends on an effective reduction of a mortality of released under-sized individuals. A very high post-release mortality is currently observed for certain species, which cancels any benefit of fish size limitation. Here we explore the effectiveness of limiting both gear characteristics and fish size. This management approach is aimed at biasing catches toward legal-sized individuals and minimizing the catches of under-sized fish. Specifically, size selection of fishes induced by hook size was evaluated for the near-shore boat recreational fishery from the Balearic Islands (NW Mediterranean). First, we evaluated the effects of different hook sizes on catch (number of individuals and species composition) and yield (biomass). Results showed how the number of captures was significantly reduced when using large hooks but bigger specimens and more valued species were caught. Moreover, the total yield remained unchanged, and the incidence of under-sized fish was significantly reduced. Second, the comparison of selectivity curves (i.e., logistic curves relating fish size and probability of being fished) corresponding to different hook sizes showed differences between two groups of species: those with small-mouth area, such as Coris julis or Diplodus annularis and those with larger mouth areas like Serranus scriba. Small-mouth species tend to display larger selectivity: the curves for each hook size are steeper, and there is more of a split between the curves. The results presented here motivated the authority in charge of managing the recreational fishery at the Balearic Island to stipulate a minimum legal hook size. The trade-offs of this rule between angler interest and conservation goals are discussed. © 2009 Elsevier B.V. All rights reserved.

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