Sapin

What future for silver fir in Switzerland under ongoing climate change? Foresters in many countries are currently seeking for the most suitable forest species or provenances for facing the future climate, which will be much warmer than today with more extreme summer droughts. While it is clear that some tree species will increasingly suffer from climate warming, the fate of silver fir (Abies alba Mill.) remains very uncertain because contradictory results have been published about the suitability of this species to cope with climate warming. On the one hand, species distribution models predict a strong decline of its climatic niche in the future. On the other hand, paleoecological studies reveal that this species was widely distributed under much warmer and probably drier climate, suggesting a high potential to face future climate warming. This literature survey shows that this species could actually grow under warmer conditions provided that precipitation remains sufficient, which ...

Twigs and wood essential oils of Abies pinsapo Boiss. ssp; maroccana, an endemic subspecie of Morocco, was analysed by a combinaison of chromatographic and spectroscopics methods. The two oils are similar and content a large amount of monoterpenes, namely limonene.

Numerous coastal landforms have been found in the parts of west coast of Maharashtra. The depositional coastal land forms like sand bars, sand dune and sand spits are continuously varying coastal landforms in the region. These coastal landforms are changing their characteristics seasonally due to the coastal and fluvial processes and also changes due to the human intervention. An attempt has been made to assess the size and shapes of sandspits of Phanase, Tambaldeg, and Tondavali for the year 2003 ,2011 and 2019. The variations in the spits have also been evaluated periodically for the considered years. Every year the dimension of the sand spits has changed at these sites. The data variation in the shape, size and aerial extent of the sand spit has been procured from the Remote Sensing Technique and Google Earth Satellite Images. Besides this, a field survey with the in situ observation of sand spits at primary stage was also conducted at the coastal area of Phanase, Tambaldeg and Tondavali.

Les dépérissements du sapin pectiné dans son aire méridionale préfigurent peut-être un risque accru pour cette espèce sur le reste du territoire dans le cadre des changements climatiques. Ce projet, financé par le RMT issu d’une collaboration entre l’Inra, l’IDF et l’ONF, étudie les potentialités d’adaptation aux changements climatiques à partir des ressources génétiques existantes au sein du genre Abies.