Red Coral Fishery at the Costa Brava (NW Mediterranean): Case Study of an Overharvested Precious Coral

@article{Tsounis2007RedCF,
  title={Red Coral Fishery at the Costa Brava (NW Mediterranean): Case Study of an Overharvested Precious Coral},
  author={G. Tsounis and Sergio Rossi and Josep Maria Gili and Wolf E. Arntz},
  journal={Ecosystems},
  year={2007},
  volume={10},
  pages={975-986}
}
A bstractThe Mediterranean red coral (Corallium rubrum, L. 1758) is a slow-growing longevous gorgonian that produces a red calcium carbonate skeleton, which is in high demand by the jewellery industry. [...] Key Result A comparison of the intensively harvested populations in shallow water with that of the infrequently harvested ones in deep water, along with a population in a marine reserve as well, reveals that 98% of all shallow water colonies show a juvenile size and branching pattern as a result of…Expand

Figures and Tables from this paper

Deep-water Corallium rubrum (L., 1758) from the Mediterranean Sea: preliminary genetic characterisation
TLDR
Genetic diversity of red coral over its actual range of depth distribution is shaped by complex interactions among geological, historical, biological and ecological processes, suggesting the possible occurrence of genetic isolation among shallow- and deep-water populations.
Survey of deep-dwelling red coral (Corallium rubrum) populations at Cap de Creus (NW Mediterranean)
TLDR
This study presents, the first quantitative data on the spatial distribution and structure of a population extending between 50 (common SCUBA limits) and 230 m depth, and compared it with shallow populations previously studied in the same area, to confirm that C. rubrum populations above 50 m Depth are exposed to a higher harvesting intensity than deeper populations in thesame area.
Distribution and population structure of deep‐dwelling red coral in the Northwest Mediterranean
Commercially harvested since ancient times, the highly valuable red coral Corallium rubrum (Linnaeus, 1758) is an octocoral endemic to the Mediterranean Sea and adjacent Eastern Atlantic Ocean, where
Advances in management of precious corals in the family Corallidae: are new measures adequate?
Precious corals in the family Corallidae have a long history of exploitation characterized by boom and bust cycles. Past approaches to manage these fisheries, including gear restrictions, limits on
Does historical harvesting affect colony size distribution and genetic diversity in Corallium rubrum (Linnaeus, 1758)? Evidences from the Southern Mediterranean commercial banks
TLDR
To asses whether and how the exploitation effort affects size distribution and genetic diversity of Tunisian commercial populations, biometric data and microsatellite markers were used to characterize 113 colonies collected on nine commercial banks.
A Well-Kept Treasure at Depth: Precious Red Coral Rediscovered in Atlantic Deep Coral Gardens (SW Portugal) after 300 Years
TLDR
The first description of an Atlantic red coral assemblage, recently rediscovered dwelling at 60–100 m depth in southern Portugal, is provided, supporting a barrier role of the Atlantic-Mediterranean transition zone, but reveal also hints of connectivity along its southern margin.
Demographic parameters of two populations of red coral (Corallium rubrum L. 1758) in the North Western Mediterranean
TLDR
Despite similar growth and fecundity, the two populations showed different densities and size/age structures suggesting local factors, together with different fishing pressures, have to be taken into account in the management plans for this species.
Marine Protected Areas and the conservation of long-lived marine invertebrates: the Mediterranean red coral
TLDR
The demographic structure of red coral popula- tions from 3 of the oldest Mediterranean MPAs was analysed and the percentages of colonies with basal diameter greater than 7 mm or colony height greater than 100 mm were identified as the most useful descriptors for evaluating the conservation status of each population.
Long‐term comparison of structure and dynamics of the red coral metapopulation of the Portofino Promontory (Ligurian Sea): a case‐study for a Marine Protected Area in the Mediterranean Sea
TLDR
Quantitative comparison of the population structure data recorded in 1964, 1990 and 2012 indicated a strong size increase of the colonies, resulting in an increase in colony biomass from 300 to the current 1500 g·m−2, and the density of colonies has slightly decreased.
Demography of deep-dwelling red coral populations: Age and reproductive structure of a highly valued marine species
TLDR
The main demographic descriptors of this coral population in terms of size/age and sexual structure are quantified for understanding of deep dwelling red coral population dynamics and for matching of harvesting to population growth rate.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 64 REFERENCES
Population structure of an exploited benthic cnidarian: the case study of red coral (Corallium rubrum L.)
TLDR
This study found that some harvested red coral populations had a significantly different size structure when compared to populations at the nearby Marine Protected Area of Medas Islands at the Spanish Costa Brava (NW Mediterranean), confirming that MPAs are useful to distinguish between anthropogenic and natural influences on population structure.
Demography of the over-exploited Mediterranean red coral (Corallium rubrum L. 1758)*
TLDR
The ratio of larval survival to adult density found indicates that some density-dependent limitation of population growth is likely at play in the population under study, and will be important for understanding dynamics of red coral disturbed or exploited populations.
Red coral: conservation and management of an over-exploited Mediterranean species
TLDR
Development of a regime for the sustainable exploitation of this species requires a better knowledge of population dynamics, life-history traits and quantitative genetics, especially concerning commercial populations.
Reproduction and population sexual structure of the overexploited Mediterranean red coral Corallium rubrum
TLDR
This study provides the first description of the reproductive features of a red coral Coral- lium rubrum population that has been over-harvested and stocks are depleted and shows large differences in larval production between populations with different size and/or age structures.
Population dynamics and conservation biology of the over-exploited Mediterranean red coral.
TLDR
A discrete, non-linear model, based on Leslie-Lewis transition matrix, was applied to the demographic data to simulate the trends overtime of the population under different environmental conditions and fishing pressures, showing high stability and a strong resilience capability.
Settlement and recruitment: The first stages in the life cycle of two epibenthic suspension feeders (Corallium rubrum and Anomia ephippium)
TLDR
This study provides a detailed analysis of the settlement and recruitment processes in a red coral coastal population of the Eastern Ligurian Sea and provides basic knowledge on the early phases of the red coral life cycle.
Recruitment, early survival and growth of the Mediterranean red coral Corallium rubrum (L 1758), a 4-year study
TLDR
The findings suggest that the populations of this slowgrowing long-lived octocoral exhibit a high capacity for colonization and seem to be quite resilient to environmental variability.
Settlement and early survival of red coral on artificial substrates in different geographic areas: some clues for demography and restoration
TLDR
A significant variability between different sites at a few hundred metres distance occurred, indicating high variations in the recruitment process within the same red coral population, indicated by a 2-factors nested ANOVA.
Mass mortality event in red coral Corallium rubrum populations in the Provence region (France, NW Mediterranean)
TLDR
The main objectives of the present study were to document the mortality suffered by the red coral populations in the Provence region and assess ecological correlates of the mortality which could help to identify the putative agent or agents of the event.
Age and size at first reproduction in the commercially exploited red coral Corallium rubrum (L.) in the Marseilles area (France, NW Mediterranean)
TLDR
The results indicate that management strategies for the conservation of red coral should lead to increase the abundance of large colonies to guarantee a good reproduction output, and suggested measures are minimal harvesting sizes and no-take areas in shallow habitats.
...
1
2
3
4
5
...