Enviromental influences on the spatio-temporal distribution of Aristeus Antennatus (Risso, 1816) and Aristaeomorpha Foliacea (Risso, 1827) in the Central-Western Mediterranean
type: CreativeWork
description: According to the Food and Agriculture of United Nations, almost 80% of the world fish populations are overexploited, depleted or in a state of collapse. In general the Mediterranean Sea is characterized by the 33% of assessed stocks fully exploited, 50% overexploited and the remaining 17% non-fully exploited. Bottom trawling fleets predominate in many Mediterranean fisheries, being responsible for a high share of total catches and, in many cases, yielding the highest earnings among all the fishing sub-sectors. The deep-sea fishing began only in the first decades of the last century, as a result of the development of new technologies that made fisheries in deeper waters possible. The main target species of the Mediterranean deep-sea bottom fishery are the red shrimps Aristeus antennatus (Risso, 1816) and Aristaeomorpha foliacea (Risso, 1827), that represent one of the most important commercial species. In general both species coexist in large part of their distribution range, but in the Mediterranean Sea, where the large part of studies have been undertaken, their distribution is patchy and seems to shows an antagonistic longitudinal gradient. In this context different hypotheses have been formulated by several authors to explain the different distribution observed. Some of them correlated various environmental variables with the presence/absence of these species to explain the spatial distribution and the temporal fluctuations in landings of these two species. All the identified factors seems not to act in synergy in determining the spatio-temporal variation of the species and which is the parameter that has a significant predictive effect is still unclear. Considering the high degree of interaction between marine organisms and the environment, a more holistic approach incorporating interspecific interactions and physical environmental influences would contribute to greater sustainability by reducing the uncertainty in predictions and promoting an ecosystem based ma…
abstract: According to the Food and Agriculture of United Nations, almost 80% of the world fish populations are overexploited, depleted or in a state of collapse. In general the Mediterranean Sea is characterized by the 33% of assessed stocks fully exploited, 50% overexploited and the remaining 17% non-fully exploited. Bottom trawling fleets predominate in many Mediterranean fisheries, being responsible for a high share of total catches and, in many cases, yielding the highest earnings among all the fishing sub-sectors. The deep-sea fishing began only in the first decades of the last century, as a result of the development of new technologies that made fisheries in deeper waters possible. The main target species of the Mediterranean deep-sea bottom fishery are the red shrimps Aristeus antennatus (Risso, 1816) and Aristaeomorpha foliacea (Risso, 1827), that represent one of the most important commercial species. In general both species coexist in large part of their distribution range, but in the Mediterranean Sea, where the large part of studies have been undertaken, their distribution is patchy and seems to shows an antagonistic longitudinal gradient. In this context different hypotheses have been formulated by several authors to explain the different distribution observed. Some of them correlated various environmental variables with the presence/absence of these species to explain the spatial distribution and the temporal fluctuations in landings of these two species. All the identified factors seems not to act in synergy in determining the spatio-temporal variation of the species and which is the parameter that has a significant predictive effect is still unclear. Considering the high degree of interaction between marine organisms and the environment, a more holistic approach incorporating interspecific interactions and physical environmental influences would contribute to greater sustainability by reducing the uncertainty in predictions and promoting an ecosystem based ma…
author: PALMAS, FRANCESCO
language: eng
keywords: Mediterraneo, Sardegna, Sardinia, distribution, distribuzione, enviromental factors, fattori ambientali, gamberi rossi, mediterranean sea, red shrimps, Settore BIO/07 - Ecologia
date published: 2014-05-23
date modified: 2026-07-24T01:30:07Z
provider: Università di Cagliari
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Università degli Studi di Cagliari

PropertyValue
property ID: Handle
value: http://hdl.handle.net/11584/266515