water transparency
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The Mooring D is located in the western Ross Sea in Terra Nova Bay. The mooring is equipped with sediment traps, currentometers, trasmissometer, fluorimeter and CTD.
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Lake Kitaura is typical eutrophic lake in Japan. The maximum and average depth is 10 m and 4.5 m, respectively.
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Our primary study sites include a set of seven northern Wisconsin and four southern Wisconsin lakes and their surrounding landscapes. The project, which started in 1981, is administered by the Center for Limnology at the University of Wisconsin-Madison.
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To support the marine biodiversity and ecosystem dynamics research community in Belgium, the Flanders Marine Institute (VLIZ) has set up a local marine biodiversity observatory.
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The site consists of a marine databuoy equipped with a suite of sensors that monitor water quality parameters and acoustic receivers for the detection of Porpoises and tagged fish. The buoy is moored near an offshore windmill farm, approx. 30km off the coast on the Belgian Continental Shelf.
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Measurements of lake physics (including e.g. water temperature, alkalinity, conductivity, oxygen and Secchi depth) are part of lake monitoring, which is usually carried out by monthly sampling at many regular lake sites (5 to 17 sites depending on the intensity of the measurements over the years). The integrated sample represents the whole water column of this polymictic shallow lake with a mean lake depth of 1.2m. The measurement satisfy the analytical standards of Ö-Norm in Austria. In case of water temperature, also depth profiles were measured during some sampling periods.
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The mooring A is located in an open sea area close to Franklin Island, characterized by both clay bottom sediment and a flat morphology. The station can be considered as representative of the productivity and sedimentary conditions of the southern part of the Ross Sea, one of the areas considered to be affected by greater productivity rate.The study of mooring can be consider part of the activities conduct in the framework of the research project "ABIOCLEAR - Antarctic biogeochemical cycles - climatic and paleoclimatic reconstructions. (Resp. M. Ravaioli)". Such Project is the natural prosecution of previous research activity carried out from 1987. Objectives : Study of the particle fluxes towards the marine bottom sediment, in particular with the aim to obtain quali/quantitative estimate of the biogenica component coming from the primary production. Analysis of the vertical rain rate processes and, therefore, the marine cycle of the main biogenic particles such as Carbon and Silica. Try to obtain mass budgets of these parameters, estimating their cycle in the water column until the burial processes in sediments. From apparent accumulate rate calculated in the bottom sediment we will tried to discriminate the real vertical fluxes (Rain Rate) from the horizontal input from sediment remobilization processes. Acquisition and elaboration of long time series of data. Collection of bottom Sediment samples to estimate the variations of the productivity and the paleoproductivity in the area. Historical time series of Mooring A: Primary productivity data (every three years), fitoplancton, New and regenerated productivity, Seasonal, annual and interannual fluxes measure, monthly Particles samples, current velocity, water salinity, temperature and torbidity, Water-sediment interface measure. Biogeochemical parameters. Radiometrical Data, Mineralogical and grain size characterization. Nutrient, metals. Biostratigraphy interpretations. Lidar data are also available from 1997.
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Lake Paione Superiore is a high altitude Alpine lake, located at 2269 m a.s.l. in the Bognanco Valley, Province of Verbania, Piedmont Region, Italy. It has a surface area of 0.68 ha and a maximum depth of 11.5 m. It is included in the monitoring sites of the UN-ECE Program ICP WATERS (International Cooperative Programme on Assessment and Monitoring of Acidification of Rivers and Lakes) funded in Italy by Ministry of the Environment and for which the CNR Water Research Institute (CNR-IRSA) is the National Focal Centre for Italy. The lake has been studied since the late 1970s in the framework of research on the effect of acid deposition on chemistry and biology of sensitive lakes. At present meteorological data are collected continuously by an automatic weather station (AWS) located on the shore of the lake. Chemical data are available since 1978 and are still collected on a regular basis (annual or biennial frequency): pH, conductivity, alkalinity, dissolved oxygen, major anions (sulphate, nitrate, chloride) and cations (calcium, magnesium, sodium, potassium), reactive and total phosphorus, reactive silica, total nitrogen, dissolved organic carbon, main trace elements (included heavy metals). Three samples are collected on the water column at the deepest point of the lake. Winter or spring samplings are performed occasionally. Available biological data include phytoplankton, zoo plankton and benthos taxonomic composition, population dynamics of the main species and, limited to 2000-2001, bacteria, epilithic diatoms, and paleolimnological data.
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The Mooring B is located in the North-central Ross Sea in the Joides Basin. The mooring is equiped with sediment traps, currentometers, trasmissometer, fluorimeter and CTD. The study of mooring can be consider part of the activities conduct in the framework of the research project "ABIOCLEAR - Antarctic biogeochemical cycles - climatic and paleoclimatic reconstructions. (Resp. M. Ravaioli)". Such Project is the natural prosecution of previous research activity carried out from 1987. Objectives : Study of the particle fluxes towards the marine bottom sediment, in particular with the aim to obtain quali/quantitative estimate of the biogenica component coming from the primary production. Analysis of the vertical rain rate processes and, therefore, the marine cycle of the main biogenic particles such as Carbon and Silica. Try to obtain mass budgets of these parameters, estimating their cycle in the water column until the burial processes in sediments. From apparent accumulate rate calculated in the bottom sediment we will tried to discriminate the real vertical fluxes (Rain Rate) from the horizontal input from sediment remobilization processes. Acquisition and elaboration of long time series of data. Collection of bottom Sediment samples to estimate the variations of the productivity and the paleoproductivity in the area. Historical time series of Mooring B: Primary productivity data (every three years), fitoplancton, New and regenerated productivity, Seasonal, annual and interannual fluxes measure, monthly Particles samples, current velocity, water salinity, temperature and torbidity, Water-sediment interface measure. Biogeochemical parameters. Radiometrical Data, Mineralogical and grain size characterization. Nutrient, metals. Biostratigraphy interpretations. Lidar data are also available from 1997.
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Askö Laboratory is a modern field station that offers excellent research facilities and accommodation in the heart of an extensively studied coastal and open sea area with some unbroken data series dating back 4 decades. It is administered by the Stockholm University, Baltic Sea Centre since 2013, former Stockholm University Marine Research Centre (SMF), an organisation devoted to providing research infrastructure to SU and other interested scientists. Long term monitoring of the benthic, phytobenthic and pelagic ecosystems funded mainly by the Swedish Agency for Marine and Water Management and to a minor part by the Swedish Environment Protection Board and other organisations are located to the area. One main objective is to integrate research and monitoring to increase in-house, national and international collaboration to optimize available resources and scientific progress. Other objectives: To detect changes in the pelagic, phytobenthic and benthic ecosystems related to eutrophication and climate change, to improve management practices of coastal and open sea areas.