Search results for "climate"
showing 10 items of 4934 documents
Desplazados ambientales: incertidumbres y respuestas jurídicas frente a un eventual conflicto humanitario
2022
Los cambios ambientales, incluyendo tanto los desastres ambientales naturales como los efectos del cambio climático de carácter antrópico, son una realidad con visos de agravarse en las próximas décadas si no se toman medidas. Entre sus efectos se encuentran los desplazamientos forzados de personas hacia nuevos hábitats, que pueden causar conflictos en los Estados de acogida. En el caso de los desplazamientos ambientales transfronterizos, el actual derecho internacional no cuenta aún con una respuesta que sea a un tiempo y conjuntamente global, eficaz y coercitiva, para asegurar los derechos de las personas afectadas. No obstante, asistimos a la progresiva consolidación de una ética común g…
Garnet as a monitor for melt–rock interaction: Textural, mineralogical, and compositional evidence of partial melting and melt‐driven metasomatism
2021
International audience; In this study, we focus on a partially melted garnet-bearing granulite from the Salvador–Esplanade Belt (Salvador da Bahia, Brazil), and examine the behaviour of major and trace elements during partial melting and melt-driven metasomatism. Phase equilibria modelling and U–Th– Pb geochronology show that the sample underwent partial melting during the heating segment of the decompression path from ~1.2 GPa and 675–700° C to ~0.8 GPa and 790°C at c. 2.06 Ga. During the final stage of decompression, from 0.8 to ~0.5 GPa, physical segregation of melt resulted in the establishment of chemical potential gradients and mass transfer between the host granulite and the leucosom…
Diplostomiasis ( Diplostomum spathaceum and related species).
2020
This book chapter describes various aspects of diplostomiasis caused by Diplostomum spathaceum: diagnosis, epidemiology, life cycle, transmission, developmental stages, population dynamics, effects of climate change on parasite distribution, and disease control and prevention. peerReviewed
‘I was excited to train, so I didn’t have problems with the coach’: dual career athletes’ experiences of (dis)empowering motivational climates
2019
In addition to investing in athletic development, adolescent elite athletes are expected to complete their secondary education. As a result of this expectation and the demands of sport and education, they may struggle to sustain high levels of motivation for both domains. Grounded in theoretical tenets of empowering coaching, this study sought to explore student–athletes’ perceptions of empowering and disempowering motivational climates and their possible implications for athletes’ dual career experiences. Semi-structured interviews were conducted with 17 Finnish student–athletes, and the data were thematically analysed. The analysis indicated that a majority of the athletes had experiences…
SURCOTES MARINES DANS LE GOLFE DU LION ET FORCAGES ATMOSPHERIQUES : VARIABILITE CONTEMPORAINE ET FUTURE (1950-2100)
2010
Sea surges in the Gulf of Lions are mainly forced by southerly and south-easterly winds. This regional-scale atmospheric circulation is leading by a strong zonal gradient between low pressure system over the Bay of Biscay and high pressure over central Europe. This synoptic-scale circulation mostly happens during “Greenland Above” weather regime. In the second half of the 20th century, a slow increase of the sea-level pressure over central Europe increased the probability of having “Greenland Above” weather types associated with a southerly atmospheric circulation in the Gulf of Lions, thus leading to strong surges. A linear regression is used to simulate the interannual variability of high…
GÉOCARREFOUR KEY WORDS Local level development planning, night-time, light pollution, branding, energy transition
2015
La pollution lumineuse est progressivement devenue un enjeu environnemental. Elle produit ainsi de nouveaux périmètres pour l’action publique, dans un contexte de transition énergétique incitant à modifier les pratiques d’éclairage public pour protéger la « nuit noire ». Pour les territoires de faible densité, cette vision renouvelée de la nuit constitue une « aubaine » en termes de développement territorial. Des processus différenciés de protection, de labellisation et de mise en tourisme des « ressources environnementales nocturnes » émergent, devenant ainsi un levier de la transition énergétique. For several decades, the negative impacts of artificial light on environmental mechanisms ha…
Préface Special Issue 'The Future of Agricultural Landscapes' part 1
2020
Préface de Advances in Ecological Research, Volume 63, the latest release in this ongoing series includes specific chapters on Tropical Ecosystems in the 21st Century. Chapters in this volume cover topics such as Landscape-scale expansion of agroecology to enhance natural pest control: a systematic review and Ecosystem services and the resilience of agricultural landscapes
Consistent phenological shifts in the making of a biodiversity hotspot: the Cape flora
2011
Abstract Background The best documented survival responses of organisms to past climate change on short (glacial-interglacial) timescales are distributional shifts. Despite ample evidence on such timescales for local adaptations of populations at specific sites, the long-term impacts of such changes on evolutionary significant units in response to past climatic change have been little documented. Here we use phylogenies to reconstruct changes in distribution and flowering ecology of the Cape flora - South Africa's biodiversity hotspot - through a period of past (Neogene and Quaternary) changes in the seasonality of rainfall over a timescale of several million years. Results Forty-three dist…
RISCALDAMENTO GLOBALE E CITTÀ L’incremento della vegetazione e la progettazione urbana, tra non finito e paesaggio urbano
2023
Il contributo mette a fuoco l’interazione fra la progettazione urbana e le strategie per il contenimento del riscaldamento globale costruendo un ragionamento che partendo dall’eredità del Movimento Moderno, include gli esiti delle ricerche più recenti. Da tale base di partenza scientifica emerge come protagonista la tesi fondata sull’aumento della vegetazione in ambito urbano, come strumento indispensabile alla mitigazione delle temperature. Tale proposta trova, nel corso dell’approfondimento, una verifica sperimentale attraverso alcune concrete esperienze di progettazione che coniugano l’obiettivo ambientale avendo cura, al contempo, della qualità degli spazi dell’abitare. I progetti dimos…
Measuring the Economic, Environmental, and Social Sustainability of Short Food Supply Chains
2019
The production and distribution of food are among the hot topics debated in the context of sustainable development. Short food supply chains (SFSCs) are now widely believed to be more sustainable in comparison to mass food delivery systems. To date, very little quantitative evidence exists on the impacts of various types of food supply chains. Using a cross-sectional quantitative approach, this study assesses the sustainability of distribution channels in short and long food supply chains based on 208 food producers across seven countries: France, Hungary, Italy, Norway, Poland, the United Kingdom, and Vietnam. Ten distribution channel types are used in this study. To provide a comprehensiv…