| Zdroj: |
Murphy, K, Efremov, A, Davidson, T A, Molina-Navarro, E, Fidanza, K, Crivelari Betiol, T C, Chambers, P, Tapia Grimaldo, J, Varandas Martins, S, Springuel, I, Kennedy, M, Mormul, R P, Dibble, E, Hofstra, D, Lukács, B A, Gebler, D, Baastrup-Spohr, L & Urrutia-Estrada, J 2019, ' World distribution, diversity and endemism of aquatic macrophytes ', Aquatic Botany, vol. 158, 103127 . https://doi.org/10.1016/j.aquabot.2019.06.006 |
| Popis: |
To test the hitherto generally-accepted hypothesis that most aquatic macrophytes have broad world distributions, we investigated the global distribution, diversity and endemism patterns of 3457 macrophyte species that occur in permanent, temporary or ephemeral inland freshwater and brackish waterbodies worldwide. At a resolution of 10 × 10° latitude x longitude, most macrophyte species were found to have narrow global distributions: 78% have ranges (measured using an approach broadly following the IUCN-defined concept “extent of occurrence”) that individually occupy T: 625 species/gridcell, 350 of them Neotropical endemics). In contrast, the Sahara/Arabian Deserts, and some Arctic areas, have the lowest macrophyte α-diversity (ST 5-fold difference between the most species-rich (Neotropics) and species-poor (Palaearctic) ecozones. Our findings strongly support the assertion that small-ranged species constitute most of Earth's species diversity. |
