Truncated bimodal latitudinal diversity ...
Type de document :
Compte-rendu et recension critique d'ouvrage
DOI :
PMID :
Titre :
Truncated bimodal latitudinal diversity gradient in early Paleozoic phytoplankton
Auteur(s) :
Zacaï, Axelle [Auteur]
Laboratoire de paléontologie, évolution, paléoécosystèmes, paléoprimatologie [UMR 7262] [Palevoprim [Poitiers]]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Monnet, Claude [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Pohl, Alexandre [Auteur]
Biogéosciences [UMR 6282] [BGS]
Beaugrand, Grégory [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Mullins, Gary [Auteur]
Kroeck, David [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Servais, Thomas [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Laboratoire de paléontologie, évolution, paléoécosystèmes, paléoprimatologie [UMR 7262] [Palevoprim [Poitiers]]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Monnet, Claude [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Pohl, Alexandre [Auteur]
Biogéosciences [UMR 6282] [BGS]
Beaugrand, Grégory [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Mullins, Gary [Auteur]
Kroeck, David [Auteur]
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Servais, Thomas [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Évolution, Écologie et Paléontologie (Evo-Eco-Paleo) - UMR 8198 [Evo-Eco-Paléo (EEP)]
Titre de la revue :
Science Advances
Éditeur :
American Association for the Advancement of Science (AAAS)
Date de publication :
2021-04-07
ISSN :
2375-2548
Discipline(s) HAL :
Planète et Univers [physics]/Sciences de la Terre/Paléontologie
Sciences de l'environnement/Biodiversité et Ecologie
Sciences de l'environnement/Milieux et Changements globaux
Sciences du Vivant [q-bio]/Biodiversité
Sciences de l'environnement/Biodiversité et Ecologie
Sciences de l'environnement/Milieux et Changements globaux
Sciences du Vivant [q-bio]/Biodiversité
Résumé en anglais : [en]
The latitudinal diversity gradient (LDG)-the decline in species richness from the equator to the poles-is classically considered as the most pervasive macroecological pattern on Earth, but the timing of its establishment, ...
Lire la suite >The latitudinal diversity gradient (LDG)-the decline in species richness from the equator to the poles-is classically considered as the most pervasive macroecological pattern on Earth, but the timing of its establishment, its ubiquity in the geological past, and explanatory mechanisms remain uncertain. By combining empirical and modeling approaches, we show that the first representatives of marine phytoplankton exhibited an LDG from the beginning of the Cambrian, when most major phyla appeared. However, this LDG showed a single peak of diversity centered on the Southern Hemisphere, in contrast to the equatorial peak classically observed for most modern taxa. We find that this LDG most likely corresponds to a truncated bimodal gradient, which probably results from an uneven sediment preservation, smaller sampling effort, and/or lower initial diversity in the Northern Hemisphere. Variation of the documented LDG through time resulted primarily from fluctuations in annual sea-surface temperature and long-term climate changes.Lire moins >
Lire la suite >The latitudinal diversity gradient (LDG)-the decline in species richness from the equator to the poles-is classically considered as the most pervasive macroecological pattern on Earth, but the timing of its establishment, its ubiquity in the geological past, and explanatory mechanisms remain uncertain. By combining empirical and modeling approaches, we show that the first representatives of marine phytoplankton exhibited an LDG from the beginning of the Cambrian, when most major phyla appeared. However, this LDG showed a single peak of diversity centered on the Southern Hemisphere, in contrast to the equatorial peak classically observed for most modern taxa. We find that this LDG most likely corresponds to a truncated bimodal gradient, which probably results from an uneven sediment preservation, smaller sampling effort, and/or lower initial diversity in the Northern Hemisphere. Variation of the documented LDG through time resulted primarily from fluctuations in annual sea-surface temperature and long-term climate changes.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :
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