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The garganey (Spatula querquedula) is a small dabbling duck.It breeds in much of Europe and across the Palearctic, but is strictly migratory, with the entire population moving to Africa, India (in particular Santragachi), Bangladesh (in the natural reservoirs of Sylhet district) and Australasia during the winter of the Northern hemisphere, [2] where large flocks can occur.
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Ocean 2: The Answer is the sixteenth studio album by the German rock band Eloy, released in 1998. It is a concept album conceived by Frank Bornemann and inspired by Ocean , the most commercially successful German prog rock album ever. [ 9 ]
A molecular phylogenetic study comparing mitochondrial DNA sequences published in 2009 found that the genus Anas, as then defined, was non-monophyletic. [2] Based on this published phylogeny, the genus Anas was split into four monophyletic genera with 10 species moved into the resurrected genus Spatula .
The pelagic food web, showing the central involvement of marine microorganisms in how the ocean imports nutrients from and then exports them back to the atmosphere and ocean floor. A marine food web is a food web of marine life. At the base of the ocean food web are single-celled algae and other plant-like organisms known as phytoplankton.
Ocean chlorophyll concentration as a proxy for marine primary production. Green indicates where there are a lot of phytoplankton, while blue indicates where there are few phytoplankton. – NASA Earth Observatory 2019. [1] Marine primary production is the chemical synthesis in the ocean of organic compounds from atmospheric or dissolved carbon ...
The surface ocean engages in air-sea interactions and absorbs carbon dioxide (CO 2) from the atmosphere, making the ocean the Earth's largest sink for atmospheric CO 2. Carbon dioxide dissolves in and reacts with seawater to form carbonic acid. Subsequent reactions then produce carbonate (CO 3 2−), bicarbonate (HCO 3 −), and hydrogen (H ...
[2] [3] Marine microorganisms have been variously estimated to make up about 70%, [4] or about 90%, [5] [6] of the biomass in the ocean. Taken together they form the marine microbiome. Over billions of years this microbiome has evolved many life styles and adaptations and come to participate in the global cycling of almost all chemical elements ...