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Are commercial wild-harvested plants just ordinary ? Traits, harvesting patterns and conservation implications in France / Chloé Mouillac in Biological conservation, 312 (December 2025) 

Public Citation [article]  inBiological conservation > 312 (December 2025) . - 111480 Titre : Are commercial wild-harvested plants just ordinary ? Traits, harvesting patterns and conservation implications in France Type de document : Imprimé Auteurs : Chloé Mouillac ; Aurélien Besnard (1975-) ; Guillaume Papuga Année de publication : 2025 Article en page(s) : 111480 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Cueillette Résumé : Wild plant harvesting plays a significant role in daily life, with over 40,000 species having well-documented uses. However, its ecological impacts on wild-harvested plant (WHP) populations are often overlooked. This study provides a comprehensive assessment of commercial wild harvesting in France, exploring the factors that drive this practice and identifying knowledge gaps regarding conservation concerns. We analysed 692 commercially harvested wild plant species in Metropolitan France and Corsica, representing 12 % of the national vascular flora. Our assessment considered their phylogeny, distribution, harvested parts, uses, life forms, Grime's CSR strategies, conservation status, and regulatory measures. Our findings highlight the taxonomic diversity of WHP, spanning 110 families (60 % of French vascular plant families) and 431 genera (33 % of all genera). Analyses reveal a weak phylogenetic influence on WHP selection, suggesting additional contributing factors to this selection. WHP are geographically widespread, with the highest diversity in the Alps and southern France. Ecologically, they reflect the broad characteristics of French flora in terms of life forms and CSR strategies. These results support the concept of a ‘harvesting syndrome’ driven mostly by species availability. WHP can be harvested primarily for medicinal (37 % of WHP species), food (20 %), and craft (14 %) purposes, with destructive methods potentially used in 60 % of cases. Conservation analysis indicates that WHP are generally less at risk than the total flora, with 91 % classified as Least Concern by the IUCN, though more local conservation assessments are needed to address region-specific threats. Identifiant : DOI : 10.1016/j.biocon.2025.111480 / HAL : hal-05291327 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=155425 Mouillac, Chloé, Besnard, Aurélien (1975-), Papuga, Guillaume 2025 Are commercial wild-harvested plants just ordinary ? Traits, harvesting patterns and conservation implications in France. Biological conservation, 312: 111480.

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Spatially balanced sampling methods are always more precise than random ones for estimating the size of aggregated populations / Jan Perret in Methods in ecology and evolution, 13 (2022) 

Public Citation [article]  inMethods in ecology and evolution > 13 (2022) . - 2743–2756 Titre : Spatially balanced sampling methods are always more precise than random ones for estimating the size of aggregated populations Type de document : Imprimé Auteurs : Jan Perret ; Anne Charpentier ; Roger Pradel ; Guillaume Papuga ; Aurélien Besnard (1975-) Année de publication : 2022 Article en page(s) : 2743–2756 Catégories : [CBNPMP-Thématique] Méthode d'analyse en écologie (échantillonnage, méthode de calcul) [CBNPMP-Thématique] Statistiques Résumé : Population size is a crucial parameter for both ecological research and conservation planning. When individuals are aggregated, estimating the size of a population through sampling raises methodological challenges, as the high variance between sampling units leads to imprecise estimates. Choosing the right sample design depending on the population aggregation level could improve the precision of estimates; however, this is difficult because studies comparing sample designs for aggregated populations have been limited to a few populations and sampling designs, so their results cannot be generalised. To address this gap, we combined simulations of spatial point populations and field counts of three plant species to compare the relative precision of estimates between three sampling methods: simple random sampling (SRS), systematic sampling (SYS) and spatially balanced sampling (SBS). Comparisons were performed on density and aggregation gradients for a range of sample sizes. Our simulations showed that SYS and SBS were always more precise than SRS when individuals were aggregated, reducing sampling variance up to 80% and 60%. The highest precision for estimating population size was always obtained when the average distance between sampling units equalled the diameter of the clusters (i.e. the groups of individuals). The difference in precision was similar for the natural populations, with sampling variance lowered by up to 75% (SYS) and 60% (SBS) compared to SRS. These findings lead us to recommend using SYS or SBS rather than SRS to estimate population size when individuals are spatially aggregated, as these consistently provide more precise estimates. Assessing cluster diameters in the field enables a quick assessment of the potential gain in precision to expect, and thus the best choice of sampling method depending on the trade-off between precision and field constraints. Identifiant : DOI : 10.1111/2041-210X.14015 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=151619 Perret, Jan, Charpentier, Anne, Pradel, Roger, Papuga, Guillaume, Besnard, Aurélien (1975-) 2022 Spatially balanced sampling methods are always more precise than random ones for estimating the size of aggregated populations. Methods in ecology and evolution, 13: 2743–2756.

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Consultable Article (2022) URL