149 research outputs found

    Buscando el uso sostenible de las playas

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    Las playas son sistemas naturales sometidos en la actualidad a una gran presión humana y climática. Al igual que otros sistemas costeros desempeñan múltiples funciones ecológicas, siendo tres las más relevantes: actuar como depositarios de biodiversidad, ofrecer protección a la costa, y satisfacer las necesidades humanas de ocio. Considerando las playas como sistemas socio-ecológicos y la Gestión Integrada de Zonas Costeras (GIZC) como la herramienta básica para alcanzar un desarrollo sostenible en la costa, en este trabajo se promueve la aplicación del concepto de sistemas de gestión medioambiental a la gestión específica de las playas ("environmental management systems for beaches, EMSBs"). Para guiar este tipo de gestión, se ha desarrollado un índice de calidad integral de playas ("Beach Quality Index", BQI) que puede ser utilizado como cuadro de mando para la gestión. Adaptando dicho esquema a las visiones particulares de cada playa, podemos movernos hacia una gestión mucho más eco-efectiva y sostenible de estos sistemas.Beaches are ecosystems that are currently under significant human and climatic pressures. As coastal ecosystems they play multiple functions, being three the most important ones: to act as natural reservoirs, to offer coastal protection, and to provide human recreation. Having the idea of beaches as socio-ecological systems and Integrated Coastal Zone Management as the main tool to reach sustainable development in the coastal zone, we are proposing to apply the concept of environmental management systems to the management of beaches (EMSBs). To guide this type of management, we have developed a composite Beach Quality Index (BQI) designed to be used as a hierarchical management scorecard. By adapting this general framework to the particular visions of every managed beach, we can move towards a much more effective and sustainable management of those coastal ecosystem

    Metodologia para medir a emissão de CH4, CO2 e H2S em compostagem de dejetos de suínos

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    bitstream/item/58043/1/CUsersPiazzonDocuments479.pdfProjeto: 16.00.30.004

    Diversity, structure and spatial distribution of megabenthic communities in Cap de Creus continental shelf and submarine canyon (NW Mediterranean)

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    The continental shelf and submarine canyon off Cap de Creus (NW Mediterranean) were declared a Site of Community Importance (SCI) within the Natura 2000 Network in 2014. Implementing an effective management plan to preserve its biological diversity and monitor its evolution through time requires a detailed character ization of its benthic ecosystem. Based on 60 underwater video transects performed between 2007 and 2013 (before the declaration of the SCI), we thoroughly describe the composition and structure of the main mega benthic communities dwelling from the shelf down to 400 m depth inside the submarine canyon. We then mapped the spatial distribution of the benthic communities using the Random Forest algorithm, which incor porated geomorphological and oceanographic layers as predictors, as well as the intensity of the bottom-trawling fishing fleet. Although the study area has historically been exposed to commercial fishing practices, it still holds a rich benthic ecosystem with over 165 different invertebrate (morpho)species of the megafauna identified in the video footage, which form up to 9 distinct megabenthic communities. The continental shelf is home to coral gardens of the sea fan Eunicella cavolini, sea pen and soft coral assemblages, dense beds of the crinoid Leptometra phalangium, diverse sponge grounds and massive aggregations of the brittle star Ophiothrix fragilis. The submarine canyon off Cap de Creus is characterized by a cold-water coral community dominated by the scleractinian coral Madrepora oculata, found in association with several invertebrate species including oysters, brachiopods and a variety of sponge species, as well as by a community dominated by cerianthids and sea urchins, mostly in sedimentary areas. The benthic communities identified in the area were then compared with habitats/biocenoses described in reference habitat classification systems that consider circalittoral and bathyal environments of the Mediterranean. The complex environmental setting characteristic of the marine area off Cap de Creus likely produces the optimal conditions for communities dominated by suspension- and filter-feeding species to develop. The uniqueness of this ecosystem and the anthropogenic pressures that it faces should prompt the development of effective management actions to ensure the long-term conservation of the benthic fauna representative of this marine area3,26

    Business for ocean sustainability: Early responses of ocean governance in the private sector

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    Este artículo contiene 18 páginas, 2 tablas, 6 figuras.A large sample of 1664 companies—69 directly working in the ocean economy—distributed across 19 industrial sectors was investigated to explore awareness and activation regarding direct and indirect pressures on the ocean, their responses to these pressures, and the disclosure tools used. We examined their accountability and disclosure practices on sustainable development goals (SDGs) using the drivers, pressures, state, welfare, and response accounting framework. Based on their 2019 sustainability reports, just 7% of the companies assessed disclosed on SDG14. However, 51% of these companies can be considered as aware, albeit to varying degrees, of the pressures their industries place on the oceans, 44% deploy mitigating activities, and 26% are aware and actively lead business responses to ocean challenges. Although we have seen just early responses in addressing ocean challenges, companies’ awareness and activation must converge to achieve ocean sustainability and move businesses into a truly blue economy.This research was funded by the One Ocean Foundation (www.1ocean.org), as part of its commitment to the research and diffusion of ocean literacy. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.Peer reviewe

    Evaluación del riesgo de inundación a múltiples componentes en la costa del Maresme

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    The coast is one of the areas most affected by natural hazards, with floods being the most frequent and significant of these in terms of their induced impacts, so any management scheme requires their evaluation. In coastal areas, flooding is a hazard associated with different processes acting at different scales: coastal storms, flash floods and sea level rise (SLR). To address the problem as a whole, this study presents a methodology to undertake a preliminary integrated risk assessment of the magnitude of each flood component, taking into account their scope (extension of the affected area) and their temporal scale. The risk is quantified using specific indicators to assess the hazard magnitude (for each component) and the consequences. This allows for a robust comparison of the spatial risk distribution along the coast in order to identify both the most at-risk areas and the most influential risk components. This methodology is applied to a stretch of coastline (Maresme, Catalonia) representative of the Spanish Mediterranean coast. The results obtained characterise this coastline as an area with a relatively low overall risk, although some hotspots are identified as having high-risk values. Resumen: La costa es una de las zonas más sometidas a riesgos naturales, siendo la inundación uno de los más frecuentes e importantes en términos de daños inducidos, por lo que cualquier esquema de gestión requiere evaluación. La inundación en zonas costeras es una amenaza natural asociada a diferentes procesos que actúan a distintas escalas: tormentas costeras, riadas y subida del nivel del mar (SNM). Para abarcar la totalidad del problema, este trabajo propone una metodología para la evaluación preliminar del riesgo integrado de inundación costera a una escala regional que permite evaluar la magnitud de cada componente teniendo en cuenta su alcance (extensión de la zona afectada) y su escala temporal. El riesgo se cuantifica en función de unos indicadores específicos que valoran la magnitud de la amenaza para cada componente y las consecuencias. Esto permite comparar robustamente la distribución espacial del riesgo a lo largo de la costa, para identificar tanto zonas de mayor riesgo como las componentes que más contribuyen al mismo. Aplicamos esta metodología a un tramo de costa característica del Mediterráneo español (Maresme, Cataluña). Los resultados permiten caracterizar esta costa como un área con un riesgo global relativamente bajo, pero algunos puntos singulares con riesgo alto
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