Eutrophication
Order of the National Green Tribunal regarding discolouration of seawater near Surathkal beach in Dakshina Kannada district, Karnataka, 18/11/2022
Order of the National Green Tribunal in the matter of In re : News item published in the Newspaper named, DHNS, Mangaluru dated: 15th May, 2022, titled “Officials term discolouring of water in beaches as algal bloom” dated 18/11/2022. Proceedings have been initiated in the matter in the light of …Order of the National Green Tribunal regarding discolouration of seawater near Surathkal beach in Dakshina Kannada district, Karnataka, 18/11/2022
Order of the National Green Tribunal in the matter of In re : News item published in the Newspaper named, DHNS, Mangaluru dated: 15th May, 2022, titled “Officials term discolouring of water in beaches as algal bloom” dated 18/11/2022. Proceedings have been initiated in the matter in the light of …Healthy diets can create environmental trade-offs, depending on how diet quality is measured
There is an urgent need to assess the linkages between diet patterns and environmental sustainability in order to meet global targets for reducing premature mortality and improving sustainable management of natural resources. This study fills an important research gap by evaluating the relationship between incremental differences in diet quality and …Opening access to the black box: The need for reporting on the global phosphorus supply chain
Phosphorus (P) is an essential macronutrient in agriculture; however, lack of reporting makes its supply chain a black box. By using literature synthesis on the P challenge, we identify four areas where the reporting process is problematic: P reserves and resources; P losses along the supply chain; P externalities; and …Spatial and temporal variation in nitrogen fixation and its importance to phytoplankton in phosphorus‐rich lakes
Limnological theory posits that phosphorus (P) limits primary production in freshwater lakes, in part because fixation of atmospheric nitrogen (N2) can compensate for limitations in nitrogen (N) supply to phytoplankton. However, quantitative estimates of the degree to which N2 fixation satisfies planktonic N demand are rare. Original SourceSimulating water quality and ecological status of Lake Vansjø, Norway, under land-use and climate change by linking process-oriented models with a Bayesian network
Excess nutrient inputs and climate change are two of multiple stressors affecting many lakes worldwide. Lake Vansjø in southern Norway is one such eutrophic lake impacted by blooms of toxic blue-green algae (cyanobacteria), and classified as moderate ecological status under the EU Water Framework Directive. Future climate change may exacerbate …Atmospheric and fluvial nutrients fuel algal blooms in the East China Sea
Chinese coastal waters support vast fisheries and vital economies, but their productivity is threatened by increasingly frequent harmful algal blooms (HABs). Here we provide direct experimental evidence that atmospheric deposition, along with riverine input, opens new niches for bloom-forming dinoflagellates and diatoms in the East China Sea (ECS) by increasing …Sustainable management of Great Lakes watersheds dominated by agricultural land use
Runoff of agricultural nutrients and sediments has led to re-eutrophication of lakes and impaired stream health in the Great Lakes Basin since around 2000 following earlier success in protecting water quality. Substantial investment in conservation actions has had insufficient impact, due in part to a limited basis for understanding the …Estimating summertime epilimnetic primary production via in situ monitoring in an eutrophic freshwater embayment, Green Bay, Lake Michigan
Quantifying rates of primary production and respiration is fundamental to understanding ecosystem function. This study utilized high-frequency time series, buoy-based sensor data to estimate daily primary production and respiration rates during the summers of 2012–2015 in southern Green Bay, Lake Michigan. Highly coherent diel oscillations of dissolved oxygen concentrations in …Grassland biodiversity bounces back from long-term nitrogen addition
The negative effect of increasing atmospheric nitrogen (N) pollution on grassland biodiversity is now incontrovertible. However, the recent introduction of cleaner technologies in the UK has led to reductions in the emissions of nitrogen oxides, with concomitant decreases in N deposition. The degree to which grassland biodiversity can be expected …Grassland biodiversity bounces back from long-term nitrogen addition
The negative effect of increasing atmospheric nitrogen (N) pollution on grassland biodiversity is now incontrovertible. However, the recent introduction of cleaner technologies in the UK has led to reductions in the emissions of nitrogen oxides, with concomitant decreases in N deposition. The degree to which grassland biodiversity can be expected …Environmental and sanitary conditions of Guanabara Bay, Rio de Janeiro
Guanabara Bay is the second largest bay in the coast of Brazil, with an area of 384 km2. In its surroundings live circa 16 million inhabitants, out of which 6 million live in Rio de Janeiro city, one of the largest cities of the country, and the host of the …Heavy metals pollution influence the community structure of cyanobacteria in nutrient rich tropical estuary
Anthropogenic inputs influence the community structure and activities of microorganisms, which may impinge the functioning of estuarine and coastal ecosystem. The aim of the present study was to understand the influence of dissolved heavy metals (Cr, Mn, Fe, Ni, Cu and Zn) on community structure of cyanobacteria in a nutrient …The ecological history of Lake Ontario according to phytoplankton
Lake Ontario's condition has fluctuated since European settlement, and our understanding of the linkages between observed ecosystem shifts and stressors is improving. Changes in the physical and chemical environment of the lake due to non-indigenous species, pollution, sedimentation, turbidity, and climate change altered the pelagic primary producers, so algal assessments …A contribution to the seasonal distribution and biodiversity of fresh water phytoplankton of Karagam lake, Srikakulam, Andhra pradesh, India
In the present study, Seasonality and Species diversity of Phytoplankton studies were made on the Karagam Lake of Srikakulam District, Andhra Pradesh from November 2006 to October 2008. The phytoplankton population was represented by a Total taxa of 64 genera were recorded in this study. This includes Chlorophyceae (26 genera- …A nitrogen budget for Denmark, developments between 1990 and 2010, and prospects for the future
A nitrogen (N) budget for Denmark has been developed for the years 1990 to 2010, describing the inputs and outputs at the national scale and the internal flows between relevant sectors of the economy. Satisfactorily closing the N budgets for some sectors of the economy was not possible, due to …Integrated life cycle assessment of electricity supply scenarios confirms global environmental benefit of low-carbon technologies
Life-cycle assessments commonly used to analyze the environmental costs and benefits of climate-mitigation options are usually static in nature and address individual power plants. Our paper presents, to our knowledge, the first life-cycle assessment of the large-scale implementation of climate-mitigation technologies, addressing the feedback of the electricity system onto itself …UNEP Year Book 2014: Emerging issues in our global environment
The 2014 Year Book shows how scientific endeavour and policy actions have led to innovative solutions and vital advancements. Yet these are frequently outpaced by overall economic growth. For example, as the fuel efficiency of cars has increased, the size of the vehicle fleet continues to grow. Similarly, as the …Effects of air pollution on European ecosystems
Poor air quality not only harms human health; it also impacts the structure and function of ecosystems, often far away from the emission sources. This report focuses on the deposition of airborne sulphur (S) and nitrogen (N) compounds and their negative effects on ecosystems. N- and S-containing air pollutants are …Deoxygenation of the Baltic Sea during the last century
Oxygen-deficient waters are expanding globally in response to warming and coastal eutrophication. Coastal ecosystems provide valuable services to humans, but these services are severely reduced with decreasing oxygen conditions. In the Baltic Sea, oxygen-deficient waters have expanded from 5,000 to over 60,000 km2 with large decadal fluctuations over the last …Climate change and coastal ecosystems
Climate change and coastal ecosystems - A presentation by Dr Ahana Lakshmi, NCSCM, Chennai at the 4th National Research Conference on Climate Change held at Indian Institute of Technology, Madras from October 26-27, 2013.
- 1
Next
- 1
