Search

Active restoration is considered a profitable strategy to return ecosystems to their predisturbance state, in a reasonable time frame. However, ecological restoration of marine ecosystems is still in its infancy if compared to the terrestrial context. A review of 498 studies published in the last 25 years was carried out within the MERCES H2020 EU project to understand the effects of marine restoration actions across coastal habitats at global scale. Here, an overview focused on the Mediterranean Sea was carried out to identify both contextual and methodological determinants of restoration success in the basin. Results show that restoration efforts across habitats are increasing, especially in seagrasses and saltmarshes, but never approached at ecosystem level. Targets, methods, response variables and standards are still very heterogeneous. Short project duration (one-two years), small restoration areas (< 1 ha), lack of controls and knowledge of baselines are still a limit for deriving generalities. Finally, restorations rarely consider future challenges linked to global change, thus impairing long- term success stories. Marine restoration is a promising approach to counteract habitat loss in coastal areas. However, restoration science needs more robust approaches leading to the development of best practices (e.g. protocols, monitoring of the effects, reasons for failure) to be applied at spatial and temporal scales so as to answer to present and future disturbance regimes.

4th World Conference on Marine Biodiversity (WCMB 2018), 13-16 May 2018, Montreal, A review of 573 studies on active restoration actions in the marine environment, published in the last 25 years, was carried out at global scale. We assessed how, where, at which spatial and temporal scales and under which socio-ecological settings restoration studies have been carried out, from very shallow to deep sea habitats. Results show that restoration efforts across habitats are increasing, especially in seagrasses and coral reefs, but never approached at ecosystem level. Targets, methods, response variables and standards are still very heterogeneous. Of the factors considered in the review, habitat, human impact intensity, realm and methods of restoration were found to be good determinant of restoration success. Short project duration (one-two years), small restoration areas (< 1 ha), lack of controls and knowledge of baselines are still a limit for deriving generalities. Finally, restorations rarely consider future challenges linked to global change this impairing long-term success stories. Restoration science needs more robust approaches leading to the development of best practices (e.g. protocols, monitoring of the effects, reasons for failure) to be applied at spatial and temporal scales so as to answer to present and future disturbance regimes. Marine restoration is a promising approach to limit habitat loss. More science is needed to increase the number of success stories

Although recruitment is considered an essential process regulating populations of many marine species, there is still a lack of knowledge about the ultimate factors that influence it. This is especially true for seaweeds, where population dynamics studies are also lacking. The main objective of this study was to investigate the main mechanisms driving the recruitment patterns of an emblematic deep-water alga in the NW Mediterranean, Cystoseira zosteroides, and its influence on their population dynamics. Five C. zosteroides populations were monitored annually at different sites along the coast of Spain by using permanent transects over 3–4 years. Some of these populations suffered mass mortality events from natural or anthropogenic disturbances, allowing us to study the influence of such events. Our findings agreed with the expected results for a long-lived species. Under low frequency of disturbances, C. zosteroides populations displayed few fluctuations over time given the longevity of the adults, and they were poorly influenced by the dynamics of early life stages because of negative density-dependent control of conspecifics. Moreover, disturbances had a great influence on population dynamics because the removal of adults decreased the effects of density-dependent processes and enhanced the recruitment. Nonetheless, a high mortality was found for early life stages (~50 % year−1), contrasting with the high survival of adults (~90 % year−1). This study confirmed the slow population dynamics of these deep assemblages, demonstrated the influence of density in the C. zosteroides population dynamics and highlighted their vulnerability to the increase in natural and human-induced disturbances.

En la comunicacio politica, els partits i els liders han de construir una identitat que els dote d'una personalitat recognoscible, un relat propi i diferencial que connecte amb els electors i els involucre en els projectes politics que presenten en les conteses electorals. Mitjancant l'analisi dels espots i la cartelleria de la formacio politica Iniciativa per Catalunya Verds (IC, ICV) des de la seva fundacio el 1987 fins a les eleccions de 2012, els autors identifiquen el relat politic de la formacio i presenten un model metodologic per a l'analisi dels missatges electorals en general.El volum va dirigit a totes aquelles persones interessades en l'estudi i la practica de la comunicacio politica, en els metodes d'analisi i elaboracio d'estrategies comunicatives aixi com aquelles que volen coneixer amb mes amplitud i profunditat la historia recent de la politica catalana.

Aquest article presenta alguns esculls, objeccions i limits que ha de coneixer una teoriaestetica que defensi la idea de l’art com a comunicacio d’un sentit. Per fer-ho, reconstruireel debat sobre l’experiencia estetica generat a Alemanya a partir dels anys seixanta, desd’Adorno fins avui, prenent com a fil conductor les critiques dirigides a l’hermeneutica.Les problematiques principals entorn de l’art que hi apareixeran seran la de la mimesi irepresentacio, la de la veritat, la de l’analogia entre experiencia quotidiana i experienciaestetica i la del concepte de percepcio estetica. Aquest apropament pres des de la literaturacritica a l’hermeneutica ens ofereix tambe un apropament i una valoracio de les propostesteoriques concretes mes recents sobre l’experiencia estetica, com les de Sonderegger, Kerni Rebentisch.

Treball de fi de grau d'Humanitats. Curs 2016-2017 L'objectiu d’aquest treball és estudiar, tot adoptant una perspectiva de gènere, la condició de la dona a la Itàlia d’aquells anys decisius en l’evolució històrica del país. Per fer-ho, ens centrarem en les dones que encarnaren un dels aspectes centrals d’aquesta transformació: aquelles que realitzaren el pas del camp a la ciutat, l’abandonament de la societat camperola per incorporar-se al subproletariat urbà. I, més concretament, analitzarem la representació que la cinematogràfica italiana coetània ofereix de la dona migrant subproletària, representació en la que, com veurem, convergeixen molts dels debats sobre la condició de la dona en aquest període.

Treball de fi de grau d'Humanitats. Curs 2016-2017 Director: Pol Capdevila Castells