Explosive volcanism of Piton des Neiges (Reunion Island) and excess age dispersion in sanidine: Insights into magma chamber processes in a hotspot setting

Melendez, Maria Paula Castellanos; Muro, Andréa Di; Laurent, Oscar; Kuiper, Klaudia F.; Wijbrans, J. R.

doi:10.1016/j.chemgeo.2023.121539

Cited by 4 publications

(5 citation statements)

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“…Lastly, we did not detect bottlenecks associated with major dated volcanic eruptions that occurred in either Reunion or Mauritius, as it has been observed in other island bird systems (Bemmels et al 2022). This could indicate that the volcanic eruptions in the Mascarenes did not affect the totality of the islands in spite of the magnitude of some events, in particular a series that occurred around 200 kya on Reunion and are thought to have wreaked havoc on a large area of the island (Castellanos Melendez et al 2023;Fretzdorff et al 2000), and/or that the white-eyes were able to find habitat refugia in which they maintained relatively high population sizes in spite of the possible devastation of most of the island. This view is supported by our results from both PSMC and ABC demographic inferences that strongly support ancient and long-term expansions in the three study species, likely associated with evolutionary processes which took place on the islands themselves since the species diverged from an ancestral stock and reflecting the radiation of the Mascarene white-eyes (Warren et al 2006).…”

Section: Discussionmentioning

confidence: 50%

“…Localized and temporary, island-specific events likely to have affected many species' population trajectories have also occurred on both islands (Cheke and Hume 2010). In particular a series of large explosive volcanic eruptions that took place around 200,000 ya (198,800 ya ± 2,500 years) on Reunion (Castellanos Melendez et al 2023), and a series of basaltic lava flows that have occurred regularly (on average every 21,000 years) in the last 500,000 years on Mauritius, which currently cover nearly 75% of the island (Moore et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole-genome sequencing

Gabrielli,

Leroy,

Salmona

et al. 2023

Preprint

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Disentangling the effects of ecological disruptions operating at different spatial and temporal scales in shaping past species’ demography is particularly important in the current context of rapid environmental changes driven by both local and global factors. We argue that volcanic oceanic islands provide useful settings to study the influence of past ecological disruptions operating at local and global scales on population demographic histories. We investigate potential drivers of past population dynamics for three closely related species of passerine birds from two volcanic oceanic islands, Reunion and Mauritius (Mascarene archipelago), with distinct volcanic history. Using ABC and PSMC inferences from complete genomes, we reconstructed the demographic history of the Reunion grey white-eye (Zosterops borbonicus), the Reunion olive white-eye (Z. olivaceus), and the Mauritius grey white-eye (Z. mauritianus), and searched for possible causes underlying similarities or differences between species living on the same or different islands. Both demographic inferences strongly support ancient and long-term expansions in all species. They also reveal different trajectories between species inhabiting different islands, but consistent demographic trajectories in species or populations from the same island. Species from Reunion appear to have experienced synchronous reductions in population size during the Last Glacial Maximum, a trend not seen in the Mauritian species. Overall, this study suggests that local events have played an important role in shaping population trajectories of these island species. It also highlights the potential of our conceptual framework to disentangle the effects of local and global drivers on past species’ demography and long-term population processes.

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Section: Discussionmentioning

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole-genome sequencing

Gabrielli,

Leroy,

Salmona

et al. 2023

Preprint

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“…Remarkably, for each of the three samples, the 40 Ar/ 39 Ar age distribution spreads across a range whose oldest end overlaps with (or closely follows) the youngest zircon dates in the same sample (Figure 3) as observed in long-living silicic reservoirs (e.g. Castellanos Melendez et al, 2023). The 40 Ar/ 39 Ar age distribution of sample MC2 includes a minor component at ~7.0 Ma, possibly pointing to incomplete isotopic resetting of very large white mica crystals during the fast cooling of the dyke, being the rate of chemical diffusion orders of magnitude lower than the rate of the thermal diffusion (e.g.…”

Section: Re Sults and Interpre Tationmentioning

confidence: 53%

Coupled U–Pb and ⁴⁰Ar/³⁹Ar chronology of late‐stage intrusions at Elba Island (Italy) supports late Miocene long‐lived magma reservoirs in the Tyrrhenian upper crust

Mazzarini,

Bracciali,

Musumeci

et al. 2024

Terra Nova

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The late Miocene Monte Capanne and Porto Azzurro plutons are investigated by means of coupled U–Pb zircon and 40Ar/39Ar white mica dating to test the occurrence of long‐lived magmatic systems in the upper crust. Zircon crystallized for >1 Ma in both plutonic systems, with supersolidus conditions overlapping for ~220 ka indicating previously unrecognized co‐existence of the two reservoirs. The development of the Porto Azzurro high T‐aureole is post‐dated by continuous igneous zircon crystallization until ~6.0 Ma. By linking crystallization to post‐emplacement cooling of late‐stage pulses in both western and eastern Elba we constrain long‐lived sizeable reservoirs (possibly the same reservoir) in the Tyrrhenian upper crust between ~8 and 6 Ma.

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“…This could indicate that the volcanic eruptions in the Mascarenes did not affect the totality of the islands in spite of the magnitude of some events, in particular a series that occurred around 200 kya on Reunion and are thought to have wreaked havoc on a large area of the island (Castellanos Melendez et al, 2023;Fretzdorff et al, 2000) and/or that the white-eyes were able to find habitat refugia in which they maintained relatively high population sizes in spite of the possible devastation of most of the island. This view is supported by our results from both PSMC and ABC demographic inferences that strongly support ancient and long-term expansions in the three study species, likely associated with evolutionary processes which took place on the islands themselves since the species diverged from an ancestral stock and reflecting the radiation of the Mascarene white-eyes (Warren et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

“…Cheke & Hume, 2010). In particular, a series of large explosive volcanic eruptions that took place around 200,000 ya (198,800 ya ± 2500 years) on Reunion (Castellanos Melendez et al, 2023), and a series of basaltic lava flows that have occurred regularly (on average every 21,000 years) in the last 500,000 years on Mauritius, which currently cover nearly 75% of the island (Moore et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole‐genome sequencing

Gabrielli,

Leroy,

Salmona

et al. 2023

Molecular Ecology

View full text Add to dashboard Cite

Disentangling the effects of ecological disruptions operating at different spatial and temporal scales in shaping past species' demography is particularly important in the current context of rapid environmental changes driven by both local and regional factors. We argue that volcanic oceanic islands provide useful settings to study the influence of past ecological disruptions operating at local and regional scales on population demographic histories. We investigate potential drivers of past population dynamics for three closely related species of passerine birds from two volcanic oceanic islands, Reunion and Mauritius (Mascarene archipelago), with distinct volcanic history. Using ABC and PSMC inferences from complete genomes, we reconstructed the demographic history of the Reunion Grey White‐eye (Zosterops borbonicus (Pennant, 1781)), the Reunion Olive White‐eye (Z. olivaceus (Linnaeus, 1766)) and the Mauritius Grey White‐eye (Z. mauritianus (Gmelin, 1789)) and searched for possible causes underlying similarities or differences between species living on the same or different islands. Both demographic inferences strongly support ancient and long‐term expansions in all species. They also reveal different trajectories between species inhabiting different islands, but consistent demographic trajectories in species or populations from the same island. Species from Reunion appear to have experienced synchronous reductions in population size during the Last Glacial Maximum, a trend not seen in the Mauritian species. Overall, this study suggests that local events may have played a role in shaping population trajectories of these island species. It also highlights the potential of our conceptual framework to disentangle the effects of local and regional drivers on past species' demography and long‐term population processes.

show abstract

Explosive volcanism of Piton des Neiges (Reunion Island) and excess age dispersion in sanidine: Insights into magma chamber processes in a hotspot setting

Cited by 4 publications

References 96 publications

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole-genome sequencing

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole-genome sequencing

Coupled U–Pb and ⁴⁰Ar/³⁹Ar chronology of late‐stage intrusions at Elba Island (Italy) supports late Miocene long‐lived magma reservoirs in the Tyrrhenian upper crust

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole‐genome sequencing

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Explosive volcanism of Piton des Neiges (Reunion Island) and excess age dispersion in sanidine: Insights into magma chamber processes in a hotspot setting

Cited by 4 publications

References 96 publications

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole-genome sequencing

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole-genome sequencing

Coupled U–Pb and 40Ar/39Ar chronology of late‐stage intrusions at Elba Island (Italy) supports late Miocene long‐lived magma reservoirs in the Tyrrhenian upper crust

Demographic responses of oceanic island birds to local and regional ecological disruptions revealed by whole‐genome sequencing

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Product

Resources

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Coupled U–Pb and ⁴⁰Ar/³⁹Ar chronology of late‐stage intrusions at Elba Island (Italy) supports late Miocene long‐lived magma reservoirs in the Tyrrhenian upper crust