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Dive into the research topics where Chiara Manfredi is active.

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Featured researches published by Chiara Manfredi.


PLOS ONE | 2015

The seascape of demersal fish nursery areas in the North Mediterranean Sea, a first step towards the implementation of spatial planning for trawl fisheries

Francesco Colloca; Germana Garofalo; Isabella Bitetto; Maria Teresa Facchini; Fabio Grati; Angela Martiradonna; Gianluca Mastrantonio; Nikolaos Nikolioudakis; Francesc Ordinas; Giuseppe Scarcella; George Tserpes; M. Pilar Tugores; Vasilis D. Valavanis; Roberto Carlucci; Fabio Fiorentino; Maria Cristina Follesa; Magdalena Iglesias; Leyla Knittweis; Eugenia Lefkaditou; Giuseppe Lembo; Chiara Manfredi; Enric Massutí; Marie Louise Pace; Nadia Papadopoulou; Paolo Sartor; Christopher J. Smith; Maria Teresa Spedicato

The identification of nursery grounds and other essential fish habitats of exploited stocks is a key requirement for the development of spatial conservation planning aimed at reducing the adverse impact of fishing on the exploited populations and ecosystems. The reduction in juvenile mortality is particularly relevant in the Mediterranean and is considered as one of the main prerequisites for the future sustainability of trawl fisheries. The distribution of nursery areas of 11 important commercial species of demersal fish and shellfish was analysed in the European Union Mediterranean waters using time series of bottom trawl survey data with the aim of identifying the most persistent recruitment areas. A high interspecific spatial overlap between nursery areas was mainly found along the shelf break of many different sectors of the Northern Mediterranean indicating a high potential for the implementation of conservation measures. Overlap of the nursery grounds with existing spatial fisheries management measures and trawl fisheries restricted areas was also investigated. Spatial analyses revealed considerable variation depending on species and associated habitat/depth preferences with increased protection seen in coastal nurseries and minimal protection seen for deeper nurseries (e.g. Parapenaeus longirostris 6%). This is partly attributed to existing environmental policy instruments (e.g. Habitats Directive and Mediterranean Regulation EC 1967/2006) aiming at minimising impacts on coastal priority habitats such as seagrass, coralligenous and maerl beds. The new knowledge on the distribution and persistence of demersal nurseries provided in this study can support the application of spatial conservation measures, such as the designation of no-take Marine Protected Areas in EU Mediterranean waters and their inclusion in a conservation network. The establishment of no-take zones will be consistent with the objectives of the Common Fisheries Policy applying the ecosystem approach to fisheries management and with the requirements of the Marine Strategy Framework Directive to maintain or achieve seafloor integrity and good environmental status.


PLOS ONE | 2016

Large-Scale Spatio-Temporal Patterns of Mediterranean Cephalopod Diversity

Stefanie Keller; Valerio Bartolino; Manuel Hidalgo; Isabella Bitetto; Loredana Casciaro; Danila Cuccu; Antonio Esteban; Cristina Garcia; Germana Garofalo; Marios Josephides; Angelique Jadaud; Evgenia Lefkaditou; Porzia Maiorano; Chiara Manfredi; Bojan Marceta; Enric Massutí; Reno Micallef; Panagiota Peristeraki; Giulio Relini; Paolo Sartor; Maria Teresa Spedicato; George Tserpes; Antoni Quetglas

Species diversity is widely recognized as an important trait of ecosystems’ functioning and resilience. Understanding the causes of diversity patterns and their interaction with the environmental conditions is essential in order to effectively assess and preserve existing diversity. While diversity patterns of most recurrent groups such as fish are commonly studied, other important taxa such as cephalopods have received less attention. In this work we present spatio-temporal trends of cephalopod diversity across the entire Mediterranean Sea during the last 19 years, analysing data from the annual bottom trawl survey MEDITS conducted by 5 different Mediterranean countries using standardized gears and sampling protocols. The influence of local and regional environmental variability in different Mediterranean regions is analysed applying generalized additive models, using species richness and the Shannon Wiener index as diversity descriptors. While the western basin showed a high diversity, our analyses do not support a steady eastward decrease of diversity as proposed in some previous studies. Instead, high Shannon diversity was also found in the Adriatic and Aegean Seas, and high species richness in the eastern Ionian Sea. Overall diversity did not show any consistent trend over the last two decades. Except in the Adriatic Sea, diversity showed a hump-shaped trend with depth in all regions, being highest between 200–400 m depth. Our results indicate that high Chlorophyll a concentrations and warmer temperatures seem to enhance species diversity, and the influence of these parameters is stronger for richness than for Shannon diversity.


Acta Ichthyologica Et Piscatoria | 2014

Distribution and some biological parameters of the red gurnard, Chelidonichthys cuculus (Actinopterygii, Scorpaeniformes, Triglidae) in the north-central Adriatic Sea

Maria Vallisneri; Stefano Tommasini; Marco Stagioni; Chiara Manfredi; Igor Isajlović; Stefano Montanini

Background. Red gurnard, Chelidonichthys cuculus (Linnaeus, 1758), is distributed in the Mediterranean Sea, Black Sea, and in the eastern Atlantic Ocean from Norway to Mauritania, although it is rarely found in the North Sea and on the Norwegian shelf. The aim of this work was to conduct a comprehensive study of red gurnard in the Adriatic Sea on selected aspects the population biology and some of its environmental implications . Materialsandmethods. The sampling covered the entire subdivision GSA17 (north-central Adriatic Sea) and it was based on several bottom trawl surveys of MEDITS and GRUND projects from 2000 through 2009. Biometric parameters, as well as the spatial- and depth distributions were analyzed. The parameters such as the length–weight relation, sex, gonad maturity stage, and the stomach content were determined on a subsample of 539 specimens collected seasonally (summer and autumn–winter) within 2007–2009. The data were processed statistically . Results. Chelidonichthys cuculus was mainly distributed in the central Adriatic. Juveniles showed a distribution in shallower waters while adults tended to migrate towards the Croatian coast at greater depths. The total length of the fish sampled ranged from 40 to 303 mm (TL). We assumed the length of 100 mm as a threshold separat ing juveniles from adults and the length range of 170–190 mm as the maturity size for females and males. Isometric- and allometric growth patterns were showed for the juveniles and the adults, respectively. The diet was based almost exclusively on crustaceans (IRI% > 98%) and it did not change upon reaching the sexual maturity. Chelidonichthys cuculus should be considered a specialist predator feeding mostly on necto-benthic lophogastrids (IRI% > 72%) . Conclusion. This work constitutes an attempt to summarize some environmental and biology aspects of the red gurnard in Adriatic population: differences in depth distribution and growth were found between juveniles and adults but not in diet. Males and females showed differences in growth parameters. Extending the studied area and collecting data of red gurnard in the main areas of production should help in better understanding the biolo gy and dynamics of this species .


Progress in Oceanography | 2015

Large-scale spatio-temporal monitoring highlights hotspots of demersal fish diversity in the Mediterranean Sea

Victoria Granger; Jean-Marc Fromentin; Nicolas Bez; G. Relini; Christine N. Meynard; Jean-Claude Gaertner; Porzia Maiorano; Cristina Garcia Ruiz; Cristina Follesa; Michele Gristina; Panagiota Peristeraki; Anik Brind’Amour; Pierluigi Carbonara; Charis Charilaou; Antonio Esteban; Angelique Jadaud; Aleksandar Joksimović; Argyris Kallianiotis; Jerina Kolitari; Chiara Manfredi; Enric Massutí; Roberta Mifsud; Antoni Quetglas; Wahid Refes; Mario Sbrana; Nedo Vrgoč; Maria Teresa Spedicato; Bastien Mérigot


Ecosphere | 2017

Spatial planning for fisheries in the Northern Adriatic: working toward viable and sustainable fishing

Francois Bastardie; Silvia Angelini; Luca Bolognini; Federico Fuga; Chiara Manfredi; Michela Martinelli; J. Rasmus Nielsen; Alberto Santojanni; Giuseppe Scarcella; Fabio Grati


Ecological Modelling | 2016

An Ecosystem Model of Intermediate Complexity to test management options for fisheries: A case study

Silvia Angelini; Richard Hillary; Elisabetta B. Morello; Éva E. Plagányi; Michela Martinelli; Chiara Manfredi; Igor Isajlović; Alberto Santojanni


Progress in Oceanography | 2017

Environmentally driven synchronies of Mediterranean cephalopod populations

Stefanie Keller; Antoni Quetglas; Patricia Puerta; Isabella Bitetto; Loredana Casciaro; Danila Cuccu; Antonio Esteban; Cristina Garcia; Germana Garofalo; Beatriz Guijarro; Marios Josephides; Angelique Jadaud; Evgenia Lefkaditou; Porzia Maiorano; Chiara Manfredi; Bojan Marceta; Reno Micallef; Panagiota Peristeraki; Giulio Relini; Paolo Sartor; Maria Teresa Spedicato; George Tserpes; Manuel Hidalgo


Marine Ecology Progress Series | 2017

Demersal cephalopod communities in the Mediterranean: a large-scale analysis

Stefanie Keller; Manuel Hidalgo; Diego Alvarez-Berastegui; Isabella Bitetto; Loredana Casciaro; Danila Cuccu; Antonio Esteban; Germana Garofalo; María J. González; Beatriz Guijarro; Marios Josephides; Angelique Jadaud; Evgenia Lefkaditou; Porzia Maiorano; Chiara Manfredi; Bojan Marceta; Reno Micallef; Panagiota Peristeraki; Giulio Relini; Paolo Sartor; Maria Teresa Spedicato; George Tserpes; Antoni Quetglas


Progress in Oceanography | 2015

Large-scale spatio-temporal monitoring highlights hotspots of demersal fish diversity in the Mediterranean Sea [plus corrigendum 2015, vol.138, p.322-323]

Victoria Granger; Jean-Marc Fromentin; Nicolas Bez; G. Relini; Christine N. Meynard; Jean-Claude Gaertner; Porzia Maiorano; Cristina Garcia Ruiz; Cristina Follesa; Michele Gristina; Panagiota Peristeraki; A. Brind'Amour; Pierluigi Carbonara; Charis Charilaou; Antonio Esteban; Angelique Jadaud; Aleksandar Joksimović; Argyris Kallianiotis; Jerina Kolitari; Chiara Manfredi; Enric Massutí; Roberta Mifsud; Antoni Quetglas; Wahid Refes; Mario Sbrana; Nedo Vrgoč; Maria Teresa Spedicato; Bastien Mérigot


Progress in Oceanography | 2015

Corrigendum to ‘‘Large-scale spatio-temporal monitoring highlights hotspots of demersal fish diversity in the Mediterranean Sea” [Prog. Oceanogr. 130 (2015) 65–74]

Victoria Granger; Jean-Marc Fromentin; Nicolas Bez; Giulio Relini; Christine N. Meynard; Jean-Claude Gaertner; Porzia Maiorano; Cristina Garcia Ruiz; Cristina Follesa; Michele Gristina; Panagiota Peristeraki; Anik Brind’Amour; Pierluigi Carbonara; Charis Charilaou; Antonio Esteban; Angelique Jadaud; Aleksandar Joksimović; Argyris Kallianiotis; Jerina Kolitari; Chiara Manfredi; Enric Massutí; Roberta Mifsud; Antoni Quetglas; Wahid Refes; Mario Sbrana; Nedo Vrgoč; Maria Teresa Spedicato; Bastien Mérigot

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Enric Massutí

Spanish National Research Council

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Paolo Sartor

Sapienza University of Rome

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Manuel Hidalgo

Beth Israel Deaconess Medical Center

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