Essai d'induction de lignées de cals embryogènes friables diploides d'agrumes à partir de styles, de stigmates, de filets d'anthères de d'ovules non développés

* INRA Corse, Unité Régionale de Documentation, 20230 San Giuliano Diffusion du document : INRA Corse, Unité Régionale de Documentation, 20230 San Giulian

Iceking: A platform combining sustainable tourism and citizen science on glaciers

IceKing is an app for sustainable tourism on glaciers that is also used to crowd-source photographs from tourists for glacier research. Our vision is to unite the power of the community and space technology, producing valuable data on resource utilisation and distribution, to protect planet Earth. We will achieve this by creating a virtuous cycle between sustainable tourism on glaciers and scientific research. Glaciers are among the most reliable indicators of climate change. They are also important ecosystems, providing fresh water and hydroelectric power. Therefore, our model aims to tackle climate change, as well as providing information for water and energy management. Our app offers an all-round experience, starting with useful information to organise the trip, from the choice of where to stay to local glacier guides. During the trip, tourists can join a global expedition to study glaciers, by uploading their geo-referenced photos of different glacier spots. These photos are useful to space agencies and researchers to validate the accuracy of satellite-based data models. Moreover, combined with SAR and Optical imagery from the Copernicus Sentinels, they can improve current water runoff models. After the trip, users will receive additional services such as an online diary thanks to the available GNSS data and the photographs taken on the glacier. Their participation to the glacier campaign will increase their curiosity and engagement towards the research community. Moreover, they will receive easy to read infographics translating the scientific data into meaningful information on the evolution of glaciers in response to climate change. The app is being developed through funding from the ESA Technology Transfer program, in cooperation with the Institute for Interdisciplinary Mountain Studies in Innsbruck and in accordance with the glacier classification system of the World Glacier Monitoring Service

Assemblage of immature Odonata (Insecta, Anisoptera) in streams of the Mato Grosso do Sul State: spatial implications

ABSTRACT This study investigated the assemblages attributes (composition, abundance, richness, diversity and evenness) and the most representative genera of Odonata, Anisoptera at Água Boa and Perobão Streams, Iguatemi River basin, Brazil. Both are first order streams with similar length that are impacted by riparian forest removal and silting. Quarterly samplings were conducted from March to December 2008 in the upper, intermediate and lower stretch of each stream. The Mantel test was used to check the influence of spatial autocorrelation on the Odonata composition. Spatial variations in the composition were summarized by the Principal Coordinates Analysis (PCoA) using Mantel test residuals. The effects of spatial correlation on richness and abundance were investigated by the spatial correlogram of Moranʼs I coefficients. The most representative genera in each stream were identified by the Indicator Value Method. The spatial variations in the attributes of the assemblages were assessed using analysis of variance of null models. We collected 500 immature individuals of 23 genera and three families. Among the attributes analyzed only the composition and abundance showed significant spatial differences, with the highest mean abundance found in the Perobão Stream. Miathyria and Zenithoptera were the indicator genera of the Água Boa Stream and Erythrodiplax, Libellula, Macrothemis, Progomphus and Tramea were the indicator genera of the Perobão Stream