Marine flora of the Iles Eparses (Scattered Islands): A longitudinal transect through the Mozambique Channel

A new fissiparous asterinid seastar Aquilonastra chantalae sp. nov. is described from Europa Island, one of the Scattered Islands (Les îles Éparses) in the Mozambique Channel. It is compared with the fissiparous asterinid Aquilonastra conan-dae O’Loughlin & Rowe from the Mascarene Islands. A table of distinguishing diagnostic characters is provided. The as-terinid Aquilonastra richmondi O’Loughlin & Rowe is reported forEuropaIsland.

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Nuevas citas y aportaciones corológicas para la flora bentónica marina del Atlántico de la Península Ibérica. New records and geographical distribution additions of the benthic marine flora of the Atlantic Iberian Peninsula

Acta Botanica Malacitana ◽

10.24310/abm.v37i0.2657 ◽

2012 ◽

Vol 37 ◽

pp. 5-32 ◽

Cited By ~ 4

Author(s):

Ignacio Bárbara ◽

Pilar Díaz Tapia ◽

César Peteiro ◽

Estibaliz Berecibar ◽

Viviana Peña ◽

...

Keyword(s):

Iberian Peninsula ◽

Geographical Distribution ◽

New Records ◽

Distribution Data ◽

New Findings ◽

Floristic Studies ◽

Marine Flora ◽

Derbesia Marina ◽

Halicystis Ovalis ◽

Península Ibérica

Español. Se dan a conocer nuevas localizaciones y datos corológicos para 98 especies (61 Rhodophyta, 22 Ochrophyta, 15 Chlorophyta) de algas bentónicas marinas recolectadas en el intermareal y submareal de más de 80 localidades de las costas atlánticas y cantábricas de la Península Ibérica. Polysiphonia devoniensis, P. fibrata y Zonaria tournefortii son novedad para Portugal y 5 especies (Bonnemaisonia hamifera, Calosiphonia vermicularis, P. devoniensis, Hincksia intermedia y Derbesia marina stadium Halicystis ovalis) son nuevas citas para Galicia. Paralelamente, se aportan 101 primeras citas provinciales (2 Guipúzcoa, 1 Vizcaya, 8 Cantabria, 5 Asturias, 7 Lugo, 1 A Coruña, 8 Pontevedra, 1 Beira litoral, 15 Estremadura, 20 Alentejo, 25 Algarve y 8 Cádiz) y, además, se dan a conocer 108 segundas citas provinciales. Aunque la flora bentónica marina del Atlántico Peninsular ha sido objeto de numerosos estudios, estos nuevos hallazgos corológicos ponen en evidencia que todavía son necesarios más estudios florísticos en estas costas.English. In this work, we provide new records and geographical distribution data for 98 seaweeds (61 Rhodophyta, 22 Ochrophyta, 15 Chlorophyta) inhabiting more than 80 sites (intertidal and subtidal) of the Atlantic Iberian Peninsula. Polysiphonia devoniensis, P. fibrata y Zonaria tournefortii are new records for Portugal and 5 species (Bonnemaisonia hamifera, Calosiphonia vermicularis, P. devoniensis, Hincksia intermedia and Derbesia marina stadium Halicystis ovalis) are new records for Galicia. Moreover, 101 new records are reported for the first time in the studied provinces (2 Guipúzcoa, 1 Vizcaya, 8 Cantabria, 5 Asturias, 7 Lugo, 1 A Coruña, 8 Pontevedra, 1 Beira litoral, 15 Estremadura, 20 Alentejo, 25 Algarve y 8 Cádiz) and 108 for the second time. Although the Atlantic marine algae of the Iberian Peninsula are well studied, these new findings show that further floristic studies are necessary to complete our knowledge of the natural heritage of this region.

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Gestion ou cogestion des « réserves naturelles » créées sur les îles Eparses de la zone sud-ouest de l'océan Indien et du canal de Mozambique ? (Le cas spécifique du récif de Tromelin, de l'archipel des Glorieuses et des îlots Juan de Nova, Europa et Bassas da India)

Revue Juridique de l Environnement ◽

10.3406/rjenv.2001.3869 ◽

2001 ◽

Vol 26 (1) ◽

pp. 5-30

Author(s):

André Oraison

Keyword(s):

Îles Éparses

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Origin and Preservation Conditions of Organic Matter in the Mozambique Channel: Evidence for Widespread Oxidation Processes in the Deep-Water Domains

Marine Geology ◽

10.1016/j.margeo.2021.106589 ◽

2021 ◽

pp. 106589

Author(s):

Martina Torelli ◽

Anne Battani ◽

Daniel Pillot ◽

Eric Kohler ◽

Joel Lopes De Azevedo ◽

...

Keyword(s):

Organic Matter ◽

Deep Water ◽

Oxidation Processes ◽

Mozambique Channel ◽

Preservation Conditions

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SST Anomalies in the Mozambique Channel Using Remote Sensing and Numerical Modeling Data

Remote Sensing ◽

10.3390/rs11091112 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1112

Author(s):

Guoqing Han ◽

Changming Dong ◽

Junde Li ◽

Jingsong Yang ◽

Qingyue Wang ◽

...

Keyword(s):

Remote Sensing ◽

Mixed Layer Depth ◽

Surface Wind ◽

Radiant Heat ◽

Heat Fluxes ◽

Sea Surface ◽

Surface Mixed Layer ◽

Mozambique Channel ◽

Sea Surface Wind ◽

Sst Anomalies

Based on both satellite remote sensing sea surface temperature (SST) data and numerical model results, SST warming differences in the Mozambique Channel (MC) west of the Madagascar Island (MI) were found with respect to the SST east of the MI along the same latitude. The mean SST west of the MI is up to about 3.0 °C warmer than that east of the MI. The SST differences exist all year round and the maximum value appears in October. The area of the highest SST is located in the northern part of the MC. Potential factors causing the SST anomalies could be sea surface wind, heat flux and oceanic flow advection. The presence of the MI results in weakening wind in the MC and in turn causes weakening of the mixing in the upper oceans, thus the surface mixed layer depth becomes shallower. There is more precipitation on the east of the MI than that inside the MC because of the orographic effects. Different precipitation patterns and types of clouds result in different solar radiant heat fluxes across both sides of the MI. Warm water advected from the equatorial area also contribute to the SST warm anomalies.

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Variability in the Mozambique Channel Trough and Impacts on Southeast African Rainfall

Journal of Climate ◽

10.1175/jcli-d-19-0267.1 ◽

2020 ◽

Vol 33 (2) ◽

pp. 749-765 ◽

Cited By ~ 3

Author(s):

Rondrotiana Barimalala ◽

Ross C. Blamey ◽

Fabien Desbiolles ◽

Chris J. C. Reason

Keyword(s):

Indian Ocean ◽

Austral Summer ◽

Western Indian Ocean ◽

Strong Relationship ◽

Ocean Basin ◽

Moist Convection ◽

South Indian Ocean ◽

Mozambique Channel ◽

Mascarene High ◽

South Indian

AbstractThe Mozambique Channel trough (MCT) is a cyclonic region prominent in austral summer in the central and southern Mozambique Channel. It first becomes evident in December with a peak in strength in February when the Mozambique Channel is warmest and the Mascarene high (MH) is located farthest southeast in the Indian Ocean basin. The strength and the timing of the mean MCT are linked to that of the cross-equatorial northeasterly monsoon in the tropical western Indian Ocean, which curves as northwesterlies toward northern Madagascar. The interannual variability in the MCT is associated with moist convection over the Mozambique Channel and is modulated by the location of the warm sea surface temperatures in the south Indian Ocean. Variability of the MCT shows a strong relationship with the equatorial westerlies north of Madagascar and the latitudinal extension of the MH. Summers with strong MCT activity are characterized by a prominent cyclonic circulation over the Mozambique Channel, extending to the midlatitudes. These are favorable for the development of tropical–extratropical cloud bands over the southwestern Indian Ocean and trigger an increase in rainfall over the ocean but a decrease over the southern African mainland. Most years with a weak MCT are associated with strong positive south Indian Ocean subtropical dipole events, during which the subcontinent tends to receive more rainfall whereas Madagascar and northern Mozambique are anomalously dry.

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