Results 31 to 40 of about 132 (91)

Essais de régénération mécanique de quelques parcours sahéliens dégradés

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1977
Une dégradation importante de la végétation sahélienne, surtout depuis la sécheresse, se manifeste dans certaines régions du nord de la Haute-Volta, très chargées en bétail, entraînant la diminution des potentialités pastorales et menaçant le milieu lui ...
Bernard Toutain
doaj   +1 more source

Orchids in the Open: Understanding Biodiversity Beyond Madagascar's Forests

Diversity and Distributions, Volume 32, Issue 3, March 2026.
ABSTRACT Aim Orchids make up 8% of Madagascar's vascular plant species richness and are typically associated with the island's forests. Yet most of the island is covered by open ecosystems, long dismissed as degraded. This perception has contributed to their neglect, limiting our understanding of species ecology and hindering conservation action in ...
Jakub D. Wieczorkowski, Landy R. Rajaovelona, Johan Hermans, Tariq Stévart, Henintsoa Razanajatovo, Vincent Droissart, R. Toby Pennington, Alexander Zizka, Caroline E. R. Lehmann   +8 more
wiley   +1 more source

Dynamique du couvert végétal et implications socio-environnementales à la périphérie du parc W/Burkina Faso

VertigO, 2018
The climatic crises in the Sahelian zone, particularly in Burkina Faso, have impacted the environment. In this context, conservation efforts have been undertaken throughout the country through the development of protected areas.
Raogo Noël Gansaonré
doaj   +1 more source

Opinion and report of the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) relating to an analysis of the health risks associated with exposure to caterpillars with stinging hairs and the development of management recommendations

Food Risk Assess Europe, Volume 3, Issue 2, April 2025.
Abstract Several species of Lepidoptera with caterpillars bearing urticating hairs are increasing their range in metropolitan France from year to year, such as the pine processionary (Thaumetopoea pityocampa Denis et Schiffermüller 1775) whose presence was historically limited to the south of France, and which is gradually being observed in the north ...
Nicolas Desneux, Andrea Battisti, Anne‐Sophie Brinquin, Rudy Caparros‐Megido, Gilbert Gault, Carole Kerdelhué, Stéphane Krebs, Myriam Mérad, Catherine Pecquet, Tina Rambonilaza, Thomas Le Bourgeois, Philippe Castagnone, Thierry Candresse, Nicolas Desneux, Sandrine Eveillard, Florence Fontaine, Pascal Gentit, Martin Godefroidd, Lucia Guerin, Bruno Hostachy, Hervé Jactel, Eleni Kazakou, Christophe Le May, Eric Lombaert, David Markowski, Charles Manceau, Arnaud Monty, Maria Navajas, Céline Robin, Aurélien Sallé, Frédéric Suffert, Stéphan Steyer, Pierre‐Yves Teycheney, Eric Verdin, François Verheggen, Gilles Meyer, Xavier Bailly, Catherine Belloc, Stéphane Bertagnoli, Alain Boissy, Séverine Boullier, Henri‐Jean Boulouis, Eric Cardinale, Aurélie Courcoul, Alice De Boyer Des Roches, Barbara Dufour, Veasna Duong, Emmanuelle Gilot‐Fromont, Etienne Giraud, Lionel Grisot, Claire Guinat, Nadia Haddad, Elsa Jourdain, Hervé Juin, Sophie Le Bouquin‐Le Neveu, Caroline Le Maréchal, Sophie Le Poder, Yves Millemann, Pierre Mormède, Carole Peroz, Claire Ponsart, Céline Richomme, Claude Saegerman, Jean‐François Valarcher, Isabelle Vallée, Agnès Waret‐Szkuta, Natacha Woronoff‐Rehn, Georges De Sousa, Olivier Adam, Alain Aymard, Jean‐Christophe Cahuzac, Pierre Greve, Philippe Hartemann, Claire Hellio, Dominique Pessel, Vincent Richard, Christophe Soumet, Laura Maxim, Louis‐Georges Soler, Bénédicte Apouey, Luc Baumstark, Céline Bonnet, Thierry Brunelle, France Caillavet, Alain Carpentier, Thomas Coutrot, Cécile Detang‐Dessendre, Serge Garcia, Julien Gauthey, Emmanuelle Lavaine, Christine Le Clainche, Marc Leandri, Youenn Loheac, Sélim Louafi, Eric Plottu, Elodie Rouviere, Maïder Saint‐Jean, Denis Salles, Léa Tardieu, Jean‐Christophe Vergnaud, Jens Abildtrup, Catherine Collignon, Karine Fiore, Emeline Hily, Sandra Sinno‐Tellier, Emmanuel Gachet   +105 more
wiley   +1 more source

Plant Species Better Adapted to Climate Change Need Agricultural Extensification to Persist

Ecology Letters, Volume 28, Issue 2, February 2025.
Functional changes in plant communities over time are mostly driven by climate change. Trait covariations suggest that climate change and agricultural intensification act as opposing selective forces. This translated as a temporal decline of competitive and ruderal species in favour of stress‐tolerant species, putting plant communities in ...
Isis Poinas, Christine N. Meynard, Guillaume Fried   +2 more
wiley   +1 more source

Crop phenology reshapes the food‐safety landscape for roe deer in an agroecosystem

Journal of Applied Ecology, Volume 61, Issue 3, Page 564-574, March 2024.
Our work highlights the importance of behavioural plasticity and habitat complementation in the persistence of this synanthropic species in agroecosystems. This behavioural adjustment may buffer the consequences of the reduction in natural habitats that accompanies intensification of agricultural production and has implications for understanding how ...
Noa Rigoudy, Simon Chamaillé‐Jammes, A. J. Mark Hewison, Arnaud Bonnet, Yannick Chaval, Bruno Lourtet, Joël Merlet, Nicolas Morellet   +7 more
wiley   +1 more source

Floristic diversity of patches generated by protected Ficus ‘trees outside forests’ in agricultural landscapes in Madagascar

African Journal of Ecology, Volume 62, Issue 2, February 2024.
Abstract Ficus trees play an important role as key species in both ecological and sociocultural networks in Madagascar. This study focused on species of isolated Ficus growing in agricultural areas adjoining a forest corridor linking the Ranomafana and Andringitra National Parks in east‐central Madagascar, with the aim of understanding the structural ...
Verohanitra M. Rafidison, Vonjison Rakotoarimanana, Roger Edmond, Yildiz Aumeeruddy‐Thomas, Stéphanie M. Carrière   +4 more
wiley   +1 more source

Dynamique du couvert boisé en milieu fortement anthropisé : le cas de galim dans la région de l’ouest Cameroun [PDF]

Revue de Géographie Tropicale et d’Environnement
La pression humaine sur un espace entraine d’importants impacts sur l’environnement, qui doivent être mesurés spatialement. L’objectif de ce travail est de déterminer la dynamique d’occupation du sol et la transformation du couvert végétal à Galim, zone ...
Emmanuel TIOMO DONGFACK ; MOYE Eric KONGNSO ; Leonel DOUANLA LONTIO
doaj   +1 more source

La biodiversité des étages alpin et subalpin des Montagnes des Carpates et leur potentiel de valorisation

VertigO, 2017
La chaîne de montagnes des Carpates fait partie du Système Alpin Européen (SAE). Situé dans la partie orientale du SAE, cette chaîne de montagnes est influencée par la continentalité climatique, caractérisée par la diminution des précipitations et par ...
Adrian-Ilie Stoica, Nicolaie Hodor, Gheorghe Coldea   +2 more
doaj   +1 more source

The effect of grazing on soil and water losses under arid and mediterranean climates. Implications for desertification

Pirineos: Revista de Ecología de Montaña, 1999
[fr] Afin d'étudier l'effet du pâturage sur la dégradation des sols, deux zones de caractéristiques climatiques différentes soumises au pâturage ont été sélectionnées en Israel. L'une de ces zones se trouve située dans le désert de Judée, un milieu très
A. Cerdà, H. Lavée
doaj   +1 more source