Geochemistry and petrology of lavas from the submarine flanks of Réunion Island (western Indian Ocean): implications for magma genesis and the mantle source

2002 ◽  
Vol 75 (3-4) ◽  
pp. 153-184 ◽  
Author(s):  
S. Fretzdorff ◽  
K. M. Haase
Keyword(s):  
Indian Ocean ◽  
Mantle Source ◽  
Western Indian Ocean ◽  
Reunion Island ◽  
Magma Genesis ◽  
Réunion Island

scholarly journals Bat coronavirus phylogeography in the Western Indian Ocean

2019 ◽  
Author(s):  
Léa Joffrin ◽  
Steven M. Goodman ◽  
David A. Wilkinson ◽  
Beza Ramasindrazana ◽  
Erwan Lagadec ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Phylogenetic Analyses ◽  
Strong Association ◽  
Western Indian Ocean ◽  
Reunion Island ◽  
High Genetic Diversity ◽  
Soil Fertilization ◽  
Réunion Island ◽  
History Of ◽  
Bat Coronavirus

AbstractBats provide key ecosystem services such as crop pest regulation, pollination, seed dispersal, and soil fertilization. Bats are also major hosts for biological agents responsible for zoonoses, such as coronaviruses (CoVs). The islands of the Western Indian Ocean are identified as a major biodiversity hotspot, with more than 50 bat species. In this study, we tested 1,013 bats belonging to 36 species from Mozambique, Madagascar, Mauritius, Mayotte, Reunion Island and Seychelles, based on molecular screening and partial sequencing of the RNA-dependent RNA polymerase gene. In total, 88 bats (8.7%) tested positive for coronaviruses, with higher prevalence in Mozambican bats (20.5% ± 4.9%) as compared to those sampled on islands (4.5% ± 1.5%). Phylogenetic analyses revealed a large diversity of α- and β-CoVs and a strong signal of co-evolution between CoVs and their bat host species, with limited evidence for host-switching, except for bat species sharing day roost sites.ImportanceThis is the first study to report the presence of coronaviruses (CoVs) in bats in Mayotte, Mozambique and Reunion Island, and in insectivorous bats in Madagascar. Eight percent of the tested bats were positive for CoVs, with higher prevalence in continental Africa than on islands. A high genetic diversity of α- and β-CoVs was found, with strong association between bat host and virus phylogenies, supporting a long history of co-evolution between bats and their associated CoVs in the Western Indian Ocean. These results highlight that strong variation between islands does exist and is associated with the composition of the bat species community on each island. Future studies should investigate whether CoVs detected in these bats have a potential for spillover in other hosts.

scholarly journals Modelling with stakeholders to integrate biodiversity into land-use planning – Lessons learned in Réunion Island (Western Indian Ocean)

2010 ◽  
Vol 25 (11) ◽  
pp. 1413-1427 ◽  
Author(s):  
Erwann Lagabrielle ◽  
Aurélie Botta ◽  
Williams Daré ◽  
Daniel David ◽  
Sigrid Aubert ◽  
...  
Keyword(s):  
Land Use ◽  
Indian Ocean ◽  
Land Use Planning ◽  
Western Indian Ocean ◽  
Lessons Learned ◽  
Reunion Island ◽  
Réunion Island

scholarly journals Integrating conservation, restoration and land-use planning in islands—An illustrative case study in Réunion Island (Western Indian Ocean)

2011 ◽  
Vol 101 (2) ◽  
pp. 120-130 ◽  
Author(s):  
Erwann Lagabrielle ◽  
Mathieu Rouget ◽  
Thomas Le Bourgeois ◽  
Karine Payet ◽  
Laurent Durieux ◽  
...  
Keyword(s):  
Land Use ◽  
Indian Ocean ◽  
Land Use Planning ◽  
Western Indian Ocean ◽  
Illustrative Case ◽  
Reunion Island ◽  
Réunion Island ◽  
Illustrative Case Study

scholarly journals Electrical structure of Plaine des Sables caldera, Piton de la Fournaise volcano (Reunion Island)

1997 ◽  
Vol 40 (2) ◽  
Author(s):  
P. A. Schnegg
Keyword(s):  
Electrical Properties ◽  
Indian Ocean ◽  
Hot Spot ◽  
Western Indian Ocean ◽  
Conducting Layer ◽  
Reunion Island ◽  
Shield Volcano ◽  
Final Model ◽  
Piton De La Fournaise ◽  
Réunion Island

An Audio Magnetotelluric (AMT) profile has been carried out across the Plaine des Sables, a former caldera of the active Piton de la Fournaise volcano, Reunion Island. Located in the Western Indian Ocean, between the Mascarene and Madagascar basins, this basaltic shield volcano originates from the activity of a hot spot. Our aim was to determine the internal structure of the volcano, in particular the shallow electrical properties of an area extending between the old and the new caldera rims. Although several teams had already conducted AMT work in this region a few years ago, there was a need for more a detailed, in depth survey. Our final model displays a noticeable slope of the Plaine des Sables basement oriented toward the present Fournaise summit. This slope is interpreted as resulting from successive landslides toward the ocean. We conclude that this dipping, electrically good conducting layer, probably belongs to the flat layering of an older caldera.

scholarly journals A giant squid (Architeuthis dux) off Reunion Island, western Indian Ocean: the greatest giant ever?

2017 ◽  
Vol 98 (8) ◽  
pp. 2087-2093
Author(s):  
Evgeny V. Romanov ◽  
Sebastien Jaquemet ◽  
Lara Puetz
Keyword(s):  
Indian Ocean ◽  
Western Indian Ocean ◽  
Allometric Equation ◽  
Mantle Length ◽  
Reunion Island ◽  
The South ◽  
Giant Squid ◽  
Réunion Island ◽  
Comparable Size

A freshly dead individual of the giant squidArchiteuthis dux, presumably mutilated by a predator of bigger or comparable size, is reported from the south-western Indian Ocean in proximity to Reunion Island. The species was identified from body and beak morphology and validated genetically. The dorsal mantle length (DML) estimated from beak measurements (lower rostral length, LRL) varied between 2153 and 3060 mm depending on the allometric equation used. TheArchiteuthis duxindividual described here is the biggest giant squid ever reported for the region.

scholarly journals Broadcast spawning in Porites lutea at Reunion Island (Western Indian Ocean)

2019 ◽  
Vol 18 (2) ◽  
pp. 91-92
Author(s):  
Lola M. Massé ◽  
Armand Daydé ◽  
Mathieu G. Séré ◽  
Florence Trentin
Keyword(s):  
Indian Ocean ◽  
Reef Flat ◽  
Western Indian Ocean ◽  
Reunion Island ◽  
Porites Lutea ◽  
Broadcast Spawning ◽  
Shallow Reef ◽  
Réunion Island ◽  
In Situ Observations

This study report in situ observations of broadcast spawning of P. lutea on a shallow reef flat of Reunion Island.

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