Geostatistical analysis of densities of Liocarcinus depurator (Brachyura: Portunidae) on the western Mediterranean from 1994 to 2003

Rufino, Marta M.; Maynou, Francesc; Abelló, Pere; Yule, A. B.; Sola, Luís Gil de

doi:10.1007/s00227-006-0253-0

Cited by 11 publications

(14 citation statements)

References 20 publications

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“…1a, DAAR 2010) and a progressive decrease in the abundance of crustaceans in the Western Mediterranean (Rufino et al 2005(Rufino et al , 2006. This situation highlights a strong fishing pressure on the benthic community of this area due to trawling activity, in line with results from ecological models (Coll et al 2006(Coll et al , 2008.…”

Section: Discussionsupporting

confidence: 59%

Feeding ecology and trophic position of a Mediterranean endemic ray: consistency between sexes, maturity stages and seasons

et al. 2013

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The study of trophic ecology of marine predators is crucial to better understand the ecological factors that condition their role within marine ecosystems. Here we investigated the trophic habits and position of a Mediterranean endemic predator, the starry ray, Raja asterias. Specifically, we quantified the diet composition of this endemic ray in a highly exploited area of the NW Mediterranean, and we evaluated the effects of sex, maturity-stage and season on its feeding habits. Our results revealed that the starry ray is a predator of crustaceans (crabs and shrimps), and to a lower extent on teleosts, molluscs and polychaetes. This species has a high trophic position within its food web and feeds mainly on crabs (mainly Liocarcinus depurator and Goneplax rhomboides), independent of their sex, maturity-stage or season. The great importance of crabs in the diet of starry ray may be due to the fact that crabs are the dominant crustaceans in terms of biomass and abundance in the area where starry rays were collected, thus allowing them to exploit the most abundant food resource. Since the starry ray has shown a progressive decline on the catch, further research is needed to analyse the main drivers of starry ray dynamics in the Western Mediterranean Sea. Our results present important new data that will allow us to further explore the population dynamics of starry rays and the role of crustacean availability and fishing activity.

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Section: Discussionsupporting

confidence: 59%

Feeding ecology and trophic position of a Mediterranean endemic ray: consistency between sexes, maturity stages and seasons

et al. 2013

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“…The smallest patch sizes were reported for Inachus dorsettensis (2 km), Liocarcinus corrugatus (2.25 km), Liocarcinus depurator (3 km), and Liocarcinus arcuatus (3.5 km) in the Rı´a de Ferrol (Table 5). If we consider the sampling area (Table 5), it would appear that patch size estimation is closely related to the extension of the study area, as reported by Rufino et al (2006), although this does not hold true for regions above a certain extension. Patch size reported for L. depurator, for example, is similar in the studies conducted by Rufino et al (2004) and Rufino et al (2006), although the area sampled in each study differs greatly (Table 5).…”

Section: Discussionmentioning

confidence: 77%

“…If we consider the sampling area (Table 5), it would appear that patch size estimation is closely related to the extension of the study area, as reported by Rufino et al (2006), although this does not hold true for regions above a certain extension. Patch size reported for L. depurator, for example, is similar in the studies conducted by Rufino et al (2004) and Rufino et al (2006), although the area sampled in each study differs greatly (Table 5). Studying the same species, Gonza´lez found a smaller patch size than that reported by Rufino et al (2004), despite the fact that the sampling area was much larger.…”

Section: Discussionmentioning

confidence: 77%

“…Rather, they were concentrated in high-density areas that formed persistent aggregations over time. In many cases, spatial segregation between species (Freire et al 1991, Freire et al 1992, Farin˜a et al 1994, Maynou et al 1996, Rufino et al 2004, Huguet et al 2005, Rufino et al 2006 or life history stages (Comeau et al 1998) was evident, and was related to depth, bottom type, or oceanographic conditions. In our study, the aggregative distribution was obviously not related to mating.…”

Section: Introductionmentioning

confidence: 95%

“…The spatial structure of other decapod populations has been analyzed by means of geostatistical techniques (Freire et al 1991, Freire et al 1992, Farin˜a et al 1994, Maynou et al 1996, Comeau et al 1998, Maynou et al 1998, Rufino et al 2004, Huguet et al 2005, Rufino et al 2005, Rufino et al 2006, and in none of these cases did the individuals present a uniform or random distribution. Rather, they were concentrated in high-density areas that formed persistent aggregations over time.…”

Section: Introductionmentioning

confidence: 99%

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Bivalve sanctuaries to enhance stocks along the Algarve coast of southern Portugal: A spatio‐temporal approach

Rufino

Vasconcelos

Pereira

et al. 2018

Aquatic Conservation

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Populations of marine bivalves are subject to large interannual fluctuations as a result of their sensitivity to unfavourable environmental conditions. These populations have a strong dependence on recruitment, which constitutes a risk to stock conservation and the sustainability of the commercially exploited species. Bivalve sanctuaries comprising no‐take areas can promote the restocking of large coastal areas as a result of the high fecundity and the potentially long‐distance larval dispersal of bivalves. The present study explores a novel spatio‐temporal approach to investigate suitable locations for bivalve sanctuaries, aimed at protecting and enhancing stocks along the Algarve coast in southern Portugal. In the context of small‐scale fisheries, bivalve dredging constitutes an important socio‐economic activity. Three bivalve species are targeted: the striped venus (Chamelea gallina), the donax clam (Donax trunculus), and the surf clam (Spisula solida). Data gathered from 36 bivalve fishing surveys conducted over three decades (1986–2015) were analysed using geostatistical methods, accounting for temporal and spatial autocorrelation to produce continuous prediction maps of species distribution for each survey. The approach taken permitted the use of all scattered historical data collected by different methods. The predictions were then used to summarize and illustrate the spatial distribution of species across time, in terms of average biomass, variability, and maximum potential biomass, and to delimit the areas as a function of the species persistence (recurrent, occasional, or rare). The temporal patterns through space were further investigated using empirical orthogonal function (EOF) analysis. The areas accounting for 80% of the species biomass were also estimated. Results of this set of analyses led to the proposal of locations for establishing bivalve sanctuaries, aimed at enhancing the stocks of commercial bivalve species in the long term. Such an innovative spatio‐temporal approach and management strategy is replicable in other fishing resources and geographic areas.

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Geostatistical analysis of densities of Liocarcinus depurator (Brachyura: Portunidae) on the western Mediterranean from 1994 to 2003

Cited by 11 publications

References 20 publications

Feeding ecology and trophic position of a Mediterranean endemic ray: consistency between sexes, maturity stages and seasons

Feeding ecology and trophic position of a Mediterranean endemic ray: consistency between sexes, maturity stages and seasons

Dynamics of the Small-Scale Spatial Structure of a Population of the Spider CrabMaja brachydactyla(Decapoda: Majidae)

Bivalve sanctuaries to enhance stocks along the Algarve coast of southern Portugal: A spatio‐temporal approach

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