نتایج جستجو برای: 159 mpas

تعداد نتایج: 10699  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Serge Planes Geoffrey P Jones Simon R Thorrold

Networks of no-take marine protected areas (MPAs) have been widely advocated for the conservation of marine biodiversity. But for MPA networks to be successful in protecting marine populations, individual MPAs must be self-sustaining or adequately connected to other MPAs via dispersal. For marine species with a dispersive larval stage, populations within MPAs require either the return of settle...

2003
David W. Carter

This paper reviews the research to date that relates to the economics of marine protected areas (MPAs). A special effort is made to examine the evidence on the benefits and costs of MPAs in terms of consumptive and nonconsumptive marine resource interests. General observations are made regarding the net effects of MPAs on these two stakeholder categories and the potential institutional costs of...

Journal: :Schizophrenia bulletin 2004
Stefan T Sivkov Valentin H Akabaliev

Minor physical anomalies (MPAs) are slight structural aberrations that are believed to be associated with abnormal neurodevelopment. Studies of schizophrenia patients show that these patients score higher in MPAs than normal controls. The present study attempted to assess the potential value of MPAs as a classifying test in the status schizophrenia patient versus normal control. Seventy-six sch...

2016
I-Ning Tsai Jin-Jia Lin Ming-Kun Lu Hung-Pin Tan Fong-Lin Jang Shu-Ting Gan Sheng-Hsiang Lin

Age at onset is the most important feature of schizophrenia that could indicate its origin. Minor physical anomalies (MPAs) characterize potential marker indices of disturbances in early neurodevelopment. However, the association between MPAs and age at onset of schizophrenia is still unclear. We aimed to compare risk assessment and familial aggregation in patients with early-onset schizophreni...

2015
Andressa D’Agostini Douglas Francisco Marcolino Gherardi Luciano Ponzi Pezzi Chaolun Allen Chen

The East Continental Shelf (ECS) of Brazil is a hotspot of endemism and biodiversity of reef biota in the South Atlantic, hosting a number of Marine Protected Areas (MPAs). Connectivity of MPAs through larval dispersal influences recruitment, population dynamics, genetic structure and biogeography in coral reef ecosystems. Connectivity of protected reef ecosystem in the ECS was investigated wit...

2013
Even Moland Esben Moland Olsen Halvor Knutsen Pauline Garrigou Sigurd Heiberg Espeland Alf Ring Kleiven Carl André Jan Atle Knutsen

Marine protected areas (MPAs) are increasingly implemented as tools to conserve and manage fisheries and target species. Because there are opportunity costs to conservation, there is a need for science-based assessment of MPAs. Here, we present one of the northernmost documentations of MPA effects to date, demonstrated by a replicated before-after control-impact (BACI) approach. In 2006, MPAs w...

2016
Antonio Di Franco Pierre Thiriet Giuseppe Di Carlo Charalampos Dimitriadis Patrice Francour Nicolas L. Gutiérrez Alain Jeudy de Grissac Drosos Koutsoubas Marco Milazzo María del Mar Otero Catherine Piante Jeremiah Plass-Johnson Susana Sainz-Trapaga Luca Santarossa Sergi Tudela Paolo Guidetti

Marine protected areas (MPAs) have largely proven to be effective tools for conserving marine ecosystem, while socio-economic benefits generated by MPAs to fisheries are still under debate. Many MPAs embed a no-take zone, aiming to preserve natural populations and ecosystems, within a buffer zone where potentially sustainable activities are allowed. Small-scale fisheries (SSF) within buffer zon...

2018
Renata Ferrari Ezequiel M Marzinelli Camila Rezende Ayroza Alan Jordan Will F Figueira Maria Byrne Hamish A Malcolm Stefan B Williams Peter D Steinberg

Marine protected areas (MPAs) are designed to reduce threats to biodiversity and ecosystem functioning from anthropogenic activities. Assessment of MPAs effectiveness requires synchronous sampling of protected and non-protected areas at multiple spatial and temporal scales. We used an autonomous underwater vehicle to map benthic communities in replicate 'no-take' and 'general-use' (fishing allo...

2013
Marco Andrello David Mouillot Jonathan Beuvier Camille Albouy Wilfried Thuiller Stéphanie Manel

Marine protected areas (MPAs) are major tools to protect biodiversity and sustain fisheries. For species with a sedentary adult phase and a dispersive larval phase, the effectiveness of MPA networks for population persistence depends on connectivity through larval dispersal. However, connectivity patterns between MPAs remain largely unknown at large spatial scales. Here, we used a biophysical m...

Journal: :Global change biology 2017
Melinda A Coleman Paulina Cetina-Heredia Moninya Roughan Ming Feng Erik van Sebille Brendan P Kelaher

Continental boundary currents are projected to be altered under future scenarios of climate change. As these currents often influence dispersal and connectivity among populations of many marine organisms, changes to boundary currents may have dramatic implications for population persistence. Networks of marine protected areas (MPAs) often aim to maintain connectivity, but anticipation of the sc...

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