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Jérôme OLLIER

Seychelles cells: The Somali pirates 'jailed in paradise' - BBC - 0 views

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    Seychelles cells: The Somali pirates 'jailed in paradise'.
Jérôme OLLIER

NATO Counter-Piracy Mission Making Real Progress - NATO - 0 views

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    A combination of factors including stepped up naval patrols closer to shore is leading to a drop in pirate attacks off the Somali coast, the former commander of NATO's counter-piracy mission said Monday (17 December).
Jérôme OLLIER

Dutch prosecutors to try 5 alleged Somali pirates - AP - 0 views

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    Dutch prosecutors to try 5 alleged Somali pirates.
Jérôme OLLIER

Dutch marines kill 2 pirates off Somali coast - AP - 0 views

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    Dutch marines kill 2 pirates off Somali coast.
Jérôme OLLIER

Batavia's mysteries unfold with discovery of mass grave - @uwanews - 0 views

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    An international team of archaeologists, including scientists from The University of Western Australia and the Western Australian Museum, has discovered a new communal grave in the Abrolhos Islands, the result of deaths after a shipwreck of the Dutch East India company ship Batavia.
Jérôme OLLIER

Via @CORALCoE - Marine sponges are able to feed on dissolved organic matter in the ocea... - 0 views

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    Marine sponges are set to become more abundant in many near-future oligotrophic environments, where they play crucial roles in nutrient cycling. Of high importance is their mass turnover of dissolved organic matter (DOM), a heterogeneous mixture that constitutes the largest fraction of organic matter in the ocean and is recycled primarily by bacterial mediation. Little is known, however, about the mechanism that enables sponges to incorporate large quantities of DOM in their nutrition, unlike most other invertebrates. Here, we examine the cellular capacity for direct processing of DOM, and the fate of the processed matter, inside a dinoflagellate-hosting bioeroding sponge that is prominent on Indo-Pacific coral reefs. Integrating transmission electron microscopy with nanoscale secondary ion mass spectrometry, we track 15N- and 13C-enriched DOM over time at the individual cell level of an intact sponge holobiont. We show initial high enrichment in the filter-feeding cells of the sponge, providing visual evidence of their capacity to process DOM through pinocytosis without mediation of resident bacteria. Subsequent enrichment of the endosymbiotic dinoflagellates also suggests sharing of host nitrogenous wastes. Our results shed light on the physiological mechanism behind the ecologically important ability of sponges to cycle DOM via the recently described sponge loop.
Jérôme OLLIER

There's no 'garbage patch' in the Southern Indian Ocean, so where does all the rubbish ... - 0 views

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    There's no 'garbage patch' in the Southern Indian Ocean, so where does all the rubbish go?
Jérôme OLLIER

Soluble Iodine Speciation in Marine Aerosols Across the Indian and Pacific Ocean Basins... - 0 views

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    Iodine affects the radiative budget and the oxidative capacity of the atmosphere and is consequently involved in important climate feedbacks. A fraction of the iodine emitted by oceans ends up in aerosols, where complex halogen chemistry regulates the recycling of iodine to the gas-phase where it effectively destroys ozone. The iodine speciation and major ion composition of aerosol samples collected during four cruises in the East and West Pacific and Indian Oceans was studied to understand the influences on iodine's gas-aerosol phase recycling. A significant inverse relationship exists between iodide (I-) and iodate (IO3-) proportions in both fine and coarse mode aerosols, with a relatively constant soluble organic iodine (SOI) fraction of 19.8% (median) for fine and coarse mode samples of all cruises combined. Consistent with previous work on the Atlantic Ocean, this work further provides observational support that IO3- reduction is attributed to aerosol acidity, which is associated to smaller aerosol particles and air masses that have been influenced by anthropogenic emissions. Significant correlations are found between SOI and I-, which supports hypotheses that SOI may be a source for I-. This data contributes to a growing observational dataset on aerosol iodine speciation and provides evidence for relatively constant proportions of iodine species in unpolluted marine aerosols. Future development in our understanding of iodine speciation depends on aerosol pH measurements and unravelling the complex composition of SOI in aerosols.
Jérôme OLLIER

The search for a sustainable future for the coral reefs in Kenya - @WUR - 0 views

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    In southeast Kenya, near the border with Tanzania, lies a coral reef in the Indian ocean. The coral reef has degraded due to unsustainable fishing and climate change. WUR PhD student Joshua Wambugu is investigating how the local community and other stakeholders can contribute to restoring the reef and finding a sustainable livelihood.
Jérôme OLLIER

Community-managed coral reef restoration in southern Kenya initiates reef recovery usin... - 0 views

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    Monitoring of reef restoration efforts and artificial reefs (ARs) has typically been limited to coral fragment survival, hampering evaluation of broader objectives such as ecosystem recovery. This study aimed to determine to what extent AR design influences the ecological recovery of restored reefs by monitoring outplanted coral fragments, benthic cover, coral recruitment and fish and invertebrate communities for two years. Four AR designs (16 m2), unrestored controls and natural reef patches as reference (n = 10) were established in Mkwiro, Kenya. ARs consisted either of concrete disks with bottles, layered concrete disks, metal cages or a combination thereof. A mixture of 18 branching coral species (mainly Acropora spp.) was outplanted on ARs at a density of 7 corals m-2. After two years, 60% of all outplanted fragments had survived, already resulting in coral cover on most ARs comparable (though Acropora-dominated) to reference patches. Coral survival differed between ARs, with highest survival on cages due to the absence of crown-of-thorns sea star predation on this design. In total, 32 coral genera recruited on ARs and recruit densities were highest on reference patches, moderate on concrete ARs and low on cages. ARs and reference patches featured nearly twice the fish species richness and around an order of magnitude higher fish abundance and biomass compared to control patches. Fish abundance and biomass strongly correlated with coral cover on ARs. AR, reference and control patches all had distinct fish species compositions, but AR and reference patches were similar in terms of trophic structure of their fish communities. Motile invertebrates including gastropods, sea urchins, sea cucumbers and sea stars were present at ARs, but generally more abundant and diverse at natural reference patches. Taken together, all studied ecological parameters progressed towards reef ecosystem recovery, with varying influences of AR design and material. We recommend a combinat
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