aquatic species production Articles

  • Species diversity of the Okavango Delta, Botswana

    Abstract.  In the Okavango Delta (about 28,000 km2) the number of identified species is 1,300 for plants, 71 for fish, 33 for amphibians, 64 for reptiles, 444 for birds, and 122 for mammals. The local occurrence of different species of these taxonomic groups in the Okavango Delta is mainly due to a hydrological gradient from permanent streams and swamps to seasonal floodplains, riparian ...


    By Springer

  • Effects of tannin source and concentration from tree leaves on two species of tadpoles

    Vegetation in and around freshwater ecosystems can affect aquatic organisms through production of secondary compounds, which are retained in leaves after senescence and are biologically active. Tannins can be toxic to tadpoles, but in previous studies the plant source of tannins and tannin concentration have been confounded in experimental designs. To examine the effects of the concentration ...


    By John Wiley & Sons, Ltd.

  • Species diversity and ecology of Tonle Sap Great Lake, Cambodia

    Abstract.  Tonle Sap Great Lake in Cambodia, the largest natural freshwater lake in southeast Asia, is situated within the floodplain of the Mekong River. Water levels in the lake vary by about 8 m between the dry season minimum and the wet season maximum when waters from the Mekong River back up the Tonle Sap River. The lake is highly productive – the annual fish catch from the Lake is ...


    By Springer

  • Population‐level effects and recovery of aquatic invertebrates after multiple applications of an insecticide

    Standard risk assessment of plant protection products (PPP) combines ‘worst‐case’ exposure scenarios with effect thresholds using assessment (safety) factors to account for uncertainties. If needed, risks can be addressed applying more realistic conditions at higher tiers, which refine exposure and/or effect assessments using additional data. However, it is not possible to investigate the wide ...


    By John Wiley & Sons, Ltd.

  • FATE AND EFFECTS OF POLY‐ AND PERFLUOROALKYL SUBSTANCES IN THE AQUATIC ENVIRONMENT – A REVIEW

    Poly‐ and perfluoroalkyl substances (PFASs) are distributed ubiquitously in the aquatic environment which raises concern for the flora and fauna in hydrosystems. This critical review focuses on the fate and adverse effects of PFASs in the aquatic environment. PFASs are continuously emitted into the environment from point and nonpoint sources such as sewage treatment plants (STPs) and ...


    By John Wiley & Sons, Ltd.

  • Release of the 2006 IUCN Red List of Threatened Species reveals ongoing decline of the status of plants and animals

    The number of known threatened species reaches 16,119. The ranks of those facing extinction are joined by familiar species like the polar bear, hippopotamus and desert gazelles; together with ocean sharks, freshwater fish and Mediterranean flowers. Positive action has helped the white-tailed eagle and offers a glimmer of hope to Indian vultures. Geneva, Switzerland, 2 May 2006 (IUCN) – The ...

  • Development of Indonesian Fish Farming & Aquaculture Production

    Part 1.Fish Farms Market Overview in Indonesia Part 2.Reasons Why Fishery Industry Develops Fast in Indonesia Part 3.Fish Farm Types in Indonesian Part 4.Sustainable Development of the Fishery in Indonesia Fish Farms Market Overview in Indonesia Fish farming is the ...

  • The reuse of wastewater and sludge for cultivation of forestry trees in desert areas in Greece

    Processed wastewaters and sludges can be used in the irrigation of forest and desert areas for the cultivation of different plant species. Their use in the reforestation of desert areas is particularly interesting because it not only addresses the important modern problems of water shortage and desertification, but also reduces the pollution of aquatic ecosystems that are used as the final ...


    By Inderscience Publishers

  • Salmon aquaculture could incorporate seaweed and sea urchins to reduce nitrogen enrichment

    Farming fish together with seaweed and other species could help improve the sustainability of aquaculture and reduce pollution. A new study provides a tool for designing sustainable fish farming systems and calculates their potential to recycle waste. An example of a salmon farming system incorporating seaweed and sea urchins could reduce nitrogen releases to the environment by 45%. Over half of ...

  • Development of a Bioaccumulation Model For Herbicides in Ulva and Clams

    Coastal lagoons are shallow water ecosystems characterised by high biodiversity and primary and secondary production, and with an elevated number of different habitats. These habitats have a key role as nursery and rest areas for a great number of marine species and birds. During the last decades these ecosystems have been exposed tomany anthropogenic pressures (urban, domestic, agricultural ...


  • Future Brief: Sustainable Aquaculture

    Is sustainable aquaculture possible? Aquaculture is facing a new era of expansion in Europe. What are the environmental implications of this, and how can the sector expand sustainably? This Future Brief from Science for Environment Policy presents an overview of research into aquaculture’s impacts, and considers how it could develop in harmony with environmental goals. The ...


    By European Commission

  • Algae Photo Bioreactors (APB`s)

    ALGAE PHOTO-BIOREACTORS (APB’s) Absorption of CO2 and NOx from industrial exhaust gases and conversion of algal feedstock, as a discipline of ecological engineering. Algae, live in a wide range of aquatic environments and are a natural component of most aquatic ecosystems being found in both fresh, brackish and marine waters. They range in size from large macrophytic kelps to microscopic ...

  • The Superiorities of Extruding Fish Feed Pellets

    Fish feeding is one of the most important factors in commercial fish farming because feeding regime may have consequences on both growth efficiency and feed wastage. During the last decade, there has been a marked increase in the use of extruded fish feed pellets for feeding fish. These feed pellets ...


    By Amisy Fish Feed Machinery

  • A spatially and temporally explicit risk assessment for salmon from a prey base exposed to agricultural insecticides

    This risk assessment applied a framework for determining probable co‐occurrence of juvenile spring Chinook salmon (Oncorhynchus tshawytscha) with agricultural pesticides in the Willamette Basin, Oregon (Teply et al. this issue) to characterize risk to the threatened population. The assessment accounted for spatial and temporal distribution of 6 acetylcholinesterase‐inhibiting insecticides in ...


    By John Wiley & Sons, Ltd.

  • Analysis of Selected Herbicides And Related Metabolites in a Coastal Lagoon Under The Influence of Water Runoff: Water Column

    Anthropogenic release of chemical contaminants, in particular pesticides coming from agricultural areas, significantly impacts European aquatic ecosystems. Pesticides and herbicides used in common agricultural practices, are applied only during specific periods of the year, leading to significant seasonal peak concentrations in fresh and coastal waters, particularly in spring after heavy rainfall ...


  • Assessing agroforestry`s advantages

    Agroforestry, the deliberate placement of trees into crop and livestock operations, can help capture substantial amounts of carbon on agricultural lands while providing production and conservation benefits. However, we currently lack tools for accurately estimating current and projected carbon values in these systems. In North America, windbreaks are an effective carbon-capturing option. Only ...

  • Top trends conservationists should be paying attention to — but aren’t

    Artificial intelligence, testosterone and ship tracking technology probably aren’t on many conservation organizations’ “top things to think about” lists right now. But they should be, suggests a new report in the scientific journal Trends in Ecology & Evolution. ...


    By Ensia

  • Aquafeed Processing Technology and Equipment

    As one of the fastest growing food processing industry in the world, aquaculture has provided more than half of all aquatic products for human consumption. The rapid and healthy development of aquaculture industry can hardly do without the support of artificial breeding technology, knowledge of nutritional requirement to aquatic animals, aquafeed processing ...


    By Amisy Fish Feed Machinery

  • Model forecasts long-term impacts of forest land-use decisions

    The drive to develop crops for use as biofuel, continues to raise questions about additional uses of forest land.  A cutting edge computer model developed at North Carolina State University offers detailed insight to predict the environmental impact – along with understanding forest ecosystem response to global climate change. “We think the model will help policy makers and ...

  • Floating Fish Feed Machine in Negria

    Nigeria is one of the largest fish consumers in the world. Since the demand of fish is increasing continuously, many farmers have started fish farming in small scale for fulfilling their daily family demands or in large scale for making more profit. Commercial fish farming in Nigeria has great opportunities. One of significant factors in fish farming is fish feed which can offer fish better ...

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