Results 1 to 10 of about 46 (39)

Pluie pollinique et inventaire floristique dans la ville d’Annaba (Algérie)

Revue Nature et Technologie, 2022
Pour étudier le couvert végétal d’une région donnée, on fait, souvent, appel à l’étude de la pluie pollinique. Cette méthode permet laréalisation de l’inventaire de la végétation pendant une période donnée.
Soumaia BOUGHEDIRI, Mohamed BENSLAMA
doaj   +7 more sources

Relations pluie pollinique-végétation sur un transect forêt-steppe dans le parc national du Golestan, nord-est de l’Iran

Ecologia Mediterranea, 2008
Pollen rain-vegetation relationships were studied over a forest-steppe transect in Golestan National Park, NE Iran. The surface pollen percentages were compared to the vegetation composition of the respective vegetation types in 18 sampling points using both descriptive and numerical approaches.
Morteza Djamali, Jacques-Louis De Beaulieu, Valerie Andrieu-Ponel   +2 more
exaly   +3 more sources

Relations pluie pollinique-végétation en Kroumirie (Tunisie septentrionale)

Ecologia Mediterranea, 1982
Les relations pluie pollinique-végétation sont précsiées en Kroumirie montagneuse à partir due trois transects de surface réalisés dans des chênaies pures ou mixtes de Quercus suber et Quercus canariensis à sous-bois d’Erica arborea. Il est montré que Q.canariensis est un bien meilleur producteur pollinique que Q.suber et que son pollen pénètre dans ...
exaly   +3 more sources

Transect de pluie pollinique et étagement de la végétation dans le massif du Taillefer (Isère, France) [PDF]

Géographie physique et Quaternaire, 2002
Le massif du Taillefer fait l'objet de travaux paléoécologiques visant à retracer les fluctuations des étages de végétation depuis le Tardiglaciaire. Dans ce cadre, le présent travail vise à vérifier dans l'actuel la possibilité de caractériser des étages des végétation avec la pluie pollinique des taxons présents sur place en identifiant d ...
BRUGIAPAGLIA, Elisabetta, DE BEAULIEU J. L, GUIOT J, REILLE M.   +3 more
openaire   +3 more sources

Long‐term experimental drought alters floral scent and pollinator visits in a Mediterranean plant community despite overall limited impacts on plant phenotype and reproduction

Journal of Ecology, Volume 110, Issue 11, Page 2628-2648, November 2022., 2022
In the Mediterranean Basin, climate change is causing an intensification of drought intensity and frequency. Our community‐level in situ measures showed that drought altered floral scent with changes in plant–pollinator interactions and limited impacts on plant reproduction. We discuss why the context of our study—an exceptionally wet year—may have led
Coline C. Jaworski, Benoît Geslin, Marie Zakardjian, Caroline Lecareux, Pauline Caillault, Gabriel Nève, Jean‐Yves Meunier, Sylvie Dupouyet, Aoife C. T. Sweeney, Owen T. Lewis, Lynn V. Dicks, Catherine Fernandez   +11 more
wiley   +1 more source

Few figs for frugivores: Riparian fig trees in Zimbabwe may not be a dry season keystone resource

African Journal of Ecology, Volume 58, Issue 4, Page 778-785, December 2020., 2020
Abstract Most plants flower and fruit at times of year when probabilities of pollination and seedling establishment are high. Fig trees (Ficus spp.) are often considered as keystone resources for vertebrate frugivores, in part because of year‐round fig production.
Stephen G. Compton, Jaco M. Greeff
wiley   +1 more source

Local‐scale tree and shrub diversity improves pollination services to shea trees in tropical West African parklands

Journal of Applied Ecology, Volume 57, Issue 8, Page 1504-1513, August 2020., 2020
Sites with greater diversity of tree and shrub species had more bee visits and less extreme pollination limitation than less diverse sites, indicating that small‐scale diversity is associated with more efficient pollination services. Consequently, shea yields are likely to benefit from retention of a range of different tree and shrub species in ...
Aoife Delaney, Assita Dembele, Issa Nombré, Franck Gnane Lirasse, Elaine Marshall, Adama Nana, Juliet Vickery, Catherine Tayleur, Jane C. Stout, Fabrice Requier   +9 more
wiley   +1 more source

Les processus taphonomiques en archéopalynologie

Les Nouvelles de l’Archéologie, 2009
L’effet de l’oxydation sur la préservation des grains de pollen est testé avec un protocole expérimental de laboratoire. Une sélection de taxons polliniques est soumise à des conditions oxydantes en variant l’intensité et la durée d’exposition.
Vincent Lebreton, Laurent Marquer, Erwan Messager, Josette Renault-Miskovsky   +3 more
doaj   +1 more source

Pollen morphology, deep learning, phylogenetics, and the evolution of environmental adaptations in Podocarpus

New Phytologist, Volume 247, Issue 3, Page 1460-1473, August 2025.
Summary Podocarpus pollen morphology is shaped by both phylogenetic history and the environment. We analyzed the relationship between pollen traits quantified using deep learning and environmental factors within a comparative phylogenetic framework.
Marc‐Élie Adaimé, Michael A. Urban, Shu Kong, Carlos Jaramillo, Surangi W. Punyasena   +4 more
wiley   +1 more source

Servicesheds connect people to the landscapes upon which they depend

People and Nature, Volume 7, Issue 1, Page 112-126, January 2025.
Abstract Ecosystem services (ES) are benefits people receive from nature. To sustain these benefits, we need to spatially connect communities benefitting from specific ES with landscape features that generate the ES. A variety of process‐based models support ES assessments by estimating the biophysical supply of ES that comes from landscapes.
Yiyi Zhang, Hugo Thierry, Lara Cornejo, Lael Parrott, Monique Poulin, Kate Sherren, Danika Van Proosdij, Brian Robinson   +7 more
wiley   +1 more source