Fant 9831 publikasjoner. Viser side 42 av 394:
Assessing, quantifying and valuing the ecosystem services of coastal lagoons
The natural conservation of coastal lagoons is important not only for their ecological importance, but also because of the valuable ecosystem services they provide for human welfare and wellbeing. Coastal lagoons are shallow semi-enclosed systems that support important habitats such as wetlands, mangroves, salt-marshes and seagrass meadows, as well as a rich biodiversity. Coastal lagoons are also complex social-ecological systems and the ecosystem services that lagoons deliver provide livelihoods, benefits wellbeing and welfare to humans. This study assessed, quantified and valued the ecosystem services of 32 coastal lagoons. The main findings of the study were: (i) the definitions of ecosystem services are still not generally accepted; (ii) the quantification of ecosystem services is made in many different ways, using different units; (iii) the evaluation in monetary terms of some ecosystem service is problematic, often relying on non-monetary evaluation methods; (iv) when ecosystem services are valued in monetary terms, this may represent very different human benefits; and, (v) different aspects of climate change, including increasing temperature (SST), sea-level rise (SLR) and changes in rainfall patterns threaten the valuable ecosystem services of coastal lagoons.
2018
2018
2016
2010
2011
2018
2017
2015
Assessment of emissions/ discharges of mercury reaching the Arctic environment. NILU OR
Our knowledge of mercury fluxes on a global scale is still incomplete. The above presented estimates for Europe and North America seem to contribute less about 25 % to the global anthropogenic emissions of the element to the atmosphere. The majority of the remaining emissions originate from combustion of fossil fuels, particularly in the Asian countries including China, India, and South and North Korea. Even less and very controversial information is available on emissions of mercury from natural sources, including volatilization of the element from terrestrial and aquatic surfaces. In general, it is assumed that natural emissions of the element are about 3000 t/year, thus contributing more 60 % to the total global emissions of mercury. However, much work needs to be done in order to verify the above estimate.
2000
2014
2014
2015
2013
2002
Assessment of governmental air management systems. Abu Dhabi Air Monitoring Network Supervision. NILU OR
2006
Assessment of ground-level ozone in EEA member countries, with a focus on long-term trends. Technical report, 7/2009
2009
Assessment of heavy metal and POP pollution on global, regional and national scales
Meteorological Synthesizing Centre - East (MSC-E)
2022
2009
Assessment of heavy metal transboundary pollution on global, regional and national scales
Meteorological Synthesizing Centre - East (MSC-E)
2018
Assessment of heavy metal transboundary pollution on regional and national scales, transition to the new EMEP grid. EMEP Status Report, 2/2017
2017
Assessment of heavy metal transboundary pollution, progress in model development and mercury research. EMEP Status Report, 2/2016
2016
2017
2016