Auteurs, date et publication :
Auteurs Fernando WT Leivas , Carla L Bicho , Nicolas Degallier , Daniel P Moura
Publication : Zootaxa
Date : 2025
Volume : 3482
Pages : 33-46
Catégorie(s)
#CNRS #FORET NouraguesRésumé
It is well established that individual organisms can acclimate and adapt to temperature to optimize their functioning. However, thermal optimization of ecosystems, as an assemblage of organisms, has not been examined at broad spatial and temporal scales.
Auteurs, date et publication :
Auteurs Shuli Niu , Yiqi Luo , Shenfeng Fei , Wenping Yuan , David Schimel , Beverly E Law , Christof Ammann , M Altaf Arain , Almut Arneth , Marc Aubinet , Alan Barr , Jason Beringer , Christian Bernhofer , T Andrew Black , Nina Buchmann , Alessandro Cescatti , Jiquan Chen , Kenneth J Davis , Ebba Dellwik , Ankur R Desai
Publication : New Phytologist
Date : 2025
Pages : 9
Catégorie(s)
#CNRS #FORET PuechabonAuteurs, date et publication :
Auteurs Antoine Fouquet , JEAN‐BAPTISTE LEDOUX , Vincent Dubut , Brice P Noonan , Ivan Scotti
Publication : Biological Journal of the Linnean Society
Date : 2025
Volume : 106
Issue : 2
Pages : 356-373
Catégorie(s)
#CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs Eva Ringler , Max Ringler , Robert Jehle , Walter Hödl
Publication : PloS one
Date : 2025
Volume : 7
Issue : 6
Pages : e40237
Catégorie(s)
#CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs Olivier Brouard , Régis Cereghino , Bruno Corbara , Céline Leroy , Laurent Pelozuelo , Alain Dejean , JEAN‐FRANÇOIS CARRIAS
Publication : Freshwater Biology
Date : 2025
Volume : 57
Issue : 4
Pages : 815-823
Catégorie(s)
#CNRS #FORET NouraguesAuteurs, date et publication :
Auteurs J. F. Le Galliard , J. M. Guarini , F. Gaill
Date : 2025
Catégorie(s)
#CNRS #Ecotron IleDeFrance #ENS #PLANAQUARésumé
The TropiSAR campaign has been conducted in August 2009 in French Guiana with the ONERA airborne radar system SETHI. The main objective of this campaign was to collect data to support the Phase A of the 7th Earth Explorer candidate mission, BIOMASS. Several specific questions needed to be addressed to consolidate the mission concept following the Phase 0 studies, and the data collection strategy was constructed accordingly. More specifically, a tropical forest data set was required in order to provide test data for the evaluation of the foreseen inversion algorithms and data products. The paper provides a description of the resulting data set which is now available through the European Space Agency website under the airborne campaign link. First results from the TropiSAR database analysis are presented with two in-depth analyses about both the temporal radiometric variation and temporal coherence at P-band. The temporal variations of the backscatter values are less than 0.5 dB throughout the campaign, and the coherence values are observed to stay high even after 22 days. These results are essential for the BIOMASS mission. The observed temporal stability of the backscatter is a good indicator of the expected robustness of the biomass estimation in tropical forests, from cross-polarized backscatter values as regarding environmental changes such as soil moisture. The high temporal coherence observed after a 22-day period is a prerequisite for SAR Polarimetric Interferometry and Tomographic applications in a single satellite configuration. The conclusion then summarizes the paper and identifies the next steps in the analysis.
Auteurs, date et publication :
Auteurs Pascale C. Dubois-Fernandez , Thuy Le Toan , Sandrine Daniel , Hélène Oriot , Jerôme Chave , Lilian Blanc , Ludovic Villard , Malcolm W.J. Davidson , Michel Petit
Publication : IEEE Transactions on Geoscience and Remote Sensing
Date : 2025
Volume : 50
Issue : 8
Pages : 3228–3241
Catégorie(s)
#CIRAD #CNRS #FORET Nouragues #FORET ParacouAuteurs, date et publication :
Auteurs J. C. Clement , T. M. Robson , R. Guillemin , P. Saccone , J. Lochet , S. Aubert , S. Lavorel
Publication : Biogeochemistry
Date : 2025
Volume : 108
Issue : 1-3
Pages : 297-315
Catégorie(s)
#CNRS #Lautaret #UGARésumé
DNA metabarcoding refers to the DNA-based identification of multiple species from a single complex and degraded environmental sample. We developed new sampling and extraction protocols suitable for DNA metabarcoding analyses targeting soil extracellular DNA. The proposed sampling protocol has been designed to reduce, as much as possible, the influence of local heterogeneity by processing a large amount of soil resulting from the mixing of many different cores. The DNA extraction is based on the use of saturated phosphate buffer. The sampling and extraction protocols were validated first by analysing plant DNA from a set of 12 plots corresponding to four plant communities in alpine meadows, and, second, by conducting pilot experiments on fungi and earthworms. The results of the validation experiments clearly demonstrated that sound biological information can be retrieved when following these sampling and extraction procedures. Such a protocol can be implemented at any time of the year without any preliminary knowledge of specific types of organisms during the sampling. It offers the opportunity to analyse all groups of organisms using a single sampling ⁄ extraction procedure and opens the possibility to fully standardize biodiversity surveys.
Auteurs, date et publication :
Auteurs Pierre Taberlet , Sophie M. Prud’Homme , Etienne Campione , Julien Roy , Christian Miquel , Wasim Shehzad , Ludovic Gielly , Delphine Rioux , Philippe Choler , Jean-Christophe Clément , Christelle Melodelima , François Pompanon , Eric Coissac
Publication : Molecular Ecology
Date : 2025
Volume : 21
Issue : 8
Pages : 1816-1820
Catégorie(s)
#CNRS #Lautaret #UGARésumé
Bacteria play a major role in environmental processes. However, the spatial and seasonal variations and environmental impact factors on different bacterial groups have been poorly studied. In the present study, we compared the spatial and seasonal variations of two bacterial groups (Acidobacteria, Actinobacteria) from Early Snow Melt and Late Snow Melt locations in Alpine tundra by CE-SSCP method. We examined correlation between the two groups and environmental factors. The results revealed that pH of soil is the
essential factor for structure of two bacterial groups. The SSCP pattern of Acidobacteria is very similar to the overall bacterial communities in our previous study, while both bacterial communities are highly influenced by seasonal variations with an independent pattern
Auteurs, date et publication :
Auteurs Bahar Shahnavaz , Roberto A. Geremia
Publication : Journal of Cell and Molecular Research
Date : 2025
Volume : 4
Issue : 1
Pages : 28-33