Essays about: "marine primary productivity"
Showing result 1 - 5 of 9 essays containing the words marine primary productivity.
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1. Methane Sulphonic Acid in East Antarctic Coastal Firn and Ice Cores and Its Relationship with Chlorophyll-a and Sea Ice Extent in the Southern Ocean
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : The seasonal retreat of sea ice in the austral spring and summer around Antarctica has a significant effect on phytoplankton activity, mainly due to light availability, meltwater input of dissolved iron, and surface water stratification. Phytoplankton produce dimethylsulfoniopropionate, the precursor to the climate-cooling gas dimethyl sulphide, which is ventilated to the atmosphere and oxidised to methane sulphonic acid (MSA). READ MORE
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2. Records of environmental change and sedimentation processes over the last century in a Baltic coastal inlet
University essay from Lunds universitet/Geologiska institutionenAbstract : The marine ecosystem in the Baltic Sea is affected by multiple stress factors, e.g. eutrophication and deoxygenation, overfishing and anthropogenic pollution. Here we evaluate the short-term trends of dissolved oxygen in bottom waters and changes in the primary productivity within a coastal inlet in the Baltic Sea. READ MORE
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3. Size and Abundance of Late Pleistocene Reticulofenestrid Coccoliths from the Eastern Indian Ocean in Relation to Temperature and Aridity
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : Measurements on coccolith abundance and mass can be used as a signal of primary productivity and pelagic calcification in response to environmental change. The Leeuwin Current (LC) is known to transport warm and low-salinity waters from the Indo-Pacific Warm Pool (IPWP) southwards along the coast of West Australia. READ MORE
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4. Distribution of black carbon and its impact on Eutrophication in Lake Victoria
University essay from Linköpings universitet/Tema MiljöförändringAbstract : Lake Victoria (LV), is the largest tropical fresh water lake. It is however facing a myriad of challenges like eutrophication, introducing species, mass extinction and climate change. Eutrophication has mostly been seen as a result of non-point pollution from upstream agricultural areas. READ MORE
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5. Microplastics in the marine environment - A threat to marine biota?
University essay from Lunds universitet/Miljövetenskaplig utbildningAbstract : Microplastics in marine environments are an emerging environmental problem of international concern. This review focuses on the sources, quantities and effects of microplastics, to assess whether or not they pose a threat to marine biota. READ MORE