20.500.12556/DiRROS-15412 Marginality indices for biodiversity conservation in forest trees Marginal and peripheral populations are important for biodiversity conservation. Their original situation in a species’ geographic and ecological space often confers them genetic diversity and traits of high adaptive value. Yet theoretical hypotheses related to marginality are difficult to test because of confounding factors that influence marginality, namely environment, geography, and history. There is an urgent need to develop metrics to disentangle these confounding factors. We designed nine quantitative indices of marginality and peripherality that define where margins lie within species distributions, from a geographical, an environmental and a historical perspective. Using the distribution maps of eight European forest tree species, we assessed whether these indices were idiosyncratic or whether they conveyed redundant information. Using a database on marginal and peripheral populations based on expert knowledge, we assessed the capacity of the indices to predict the marginality status of a population. There was no consistent pattern of correlation between indices across species, confirming that the indices conveyed different information related to the specific geometry of the species distributions. Contrasting with this heterogeneity of correlation patterns across species, the relative importance of the indices to predict the marginality status of populations was consistent across species. However, there was still a significant country effect in the marginality status, showing a variation in expert opinion of marginality vis-á-vis the species distribution. The marginality indices that we developed are entirely based on distribution maps and can be used for any species. They pave the way for testing hypotheses related to marginality and peripherality, with important implications in quantitative ecology, genetics, and biodiversity conservation. centre-periphery hypothesis environmental indices geographical indices migration indices marginal populations peripheral populations in situ genetic conservation hipoteza centra in periferije okoljski indikatorji geografski indikatorji indikatorji migracij In situ varovanje genskih virov marginalne populcije periferne populacije true false true Angleški jezik Slovenski jezik Neznano 2022-09-01 03:34:56 2025-04-07 14:39:29 2025-04-08 03:42:16 0000-00-00 00:00:00 2022 0 0 Skupno št. avtorjev: 16; Avtorica iz Slov.: M. Westergren; 11 str. art. 109367 Vol. 143 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-01-01 630*16 1470-160X 10.1016/j.ecolind.2022.109367 119745795 https://www.sciencedirect.com/science/article/pii/S1470160X22008408 1 4ace5315-2996-11ed-b6b8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20372 1-s2.0-S1470160X22008408-main.pdf 1-s2.0-S1470160X22008408-main.pdf 1 24A5926BA8A6D1D2DC97C06780E7AB47 66e82dc0838374eb44e30d0c9b7e645cc32f683836bd2967c93eed606f838be8 8cb5186c-29d0-11ed-b6b8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=20373 Gozdarski inštitut Slovenije 0 0 0