نتایج جستجو برای: levantine sea
تعداد نتایج: 130444 فیلتر نتایج به سال:
During the 2011 exploration season of the EV Nautilus in the Mediterranean Sea, we conducted a multidisciplinary study, aimed at exploring the microbial populations below the sediment-water interface (SWI) in the hydrocarbon-rich environments of the Levantine basin. Two c. 1000-m-deep locations were sampled: sediments fueled by methane seepage at the toe of the Palmachim disturbance and a patch...
Rare mitochondrial lineages with relict distributions can sometimes be disproportionately informative about deep events in human prehistory. We have studied one such lineage, haplogroup R0a, which uniquely is most frequent in Arabia and the Horn of Africa, but is distributed much more widely, from Europe to India. We conclude that: (1) the lineage ancestral to R0a is more ancient than previousl...
Cold-water coral mounds are key hot-spots of deep ocean biodiversity and also important archives past climatic conditions. Nonetheless, the paleo-oceanographic setting in which developed Mediterranean Sea during last 500 ka still needs to be properly understood. This study describes deposits corresponding ages two on-mound gravity cores acquired from opposite sectors newly discovered Cabliers C...
Accelerated anthropogenic changes in the Eastern Mediterranean Sea (EMS) have facilitated introduction, spread and establishment of invasive copepod species this region. Here, we report introduction two non-native cyclopoid copepods Dioithona oculata Oithona davisae for first time Israeli coastal waters describe their temporal variability. The were identified by morphological characteristics, D...
The Eastern Mediterranean Sea is an exceptional habitat. Its relative isolation and distinct characteristics create a unique ecosystem recognized as marine biodiversity hot spot, where one-fifth of the species are endemic. Yet, native under increasing threat, mainly due to massive alien invasions Indo-Pacific origin. To date, more than 800 non-indigenous have been reported in Sea, justifying it...
A methanol island, powered by solar or wind energy, indirectly captures atmospheric CO2 through the ocean and combines it with hydrogen gas to produce a synthetic fuel. The island components include carbon dioxide extractor, desalinator, an electrolyzer, dioxide-hydrogen reactor complete this process. In study, optimal locations place such device in Mediterranean Sea were determined, based on t...
Cold-water coral reefs (CWC) are known to be biodiversity hotspots, however, the sponge assemblages found dwell within these habitats haven not been studied in depth date Mediterranean Sea. The present article provides first insight on associated fauna of recently discovered CWC communities Catalan Margin and, a lesser extent, Cabliers Coral Mound Province, while also reviewing current knowledg...
Archaeological, palaeontological and geological evidence shows that post-glacial warming released human populations from their various climate-bound refugia. Yet specific connections between these refugia and the timing and routes of post-glacial migrations that ultimately established modern patterns of genetic variation remain elusive. Here, we use Y-chromosome markers combined with autosomal ...
Textularia agglutinans d'Orbigny is a non-symbiont bearing and comparatively large benthic foraminiferal species with a widespread distribution across all oceans. In recent years, its populations have considerably expanded along the Israeli Mediterranean coast of the eastern Levantine basin. Despite its exceptionally widespread occurrence, no molecular data have yet been obtained. This study pr...
A significant fraction of anthropogenic carbon dioxide (CO2) released to the atmosphere is absorbed by the oceans, leading to a range of chemical changes and causing ocean acidification (OA). Assessing the impact of OA on marine ecosystems requires the accurate detection of the rate of seawater pH change. This work reports the results of nearly 3 years of continuous pH measurements in the Medit...
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