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71.
Helberg M Bustnes JO Erikstad KE Kristiansen KO Skaare JU 《Environmental pollution (Barking, Essex : 1987)》2005,134(3):475-483
The great black-backed gull Larus marinus is a top predator in subarctic and temperate marine ecosystems, and the aim of this study was to investigate if organochlorines (OCs) were related to reproductive performance in this species at the subarctic parts of the Norwegian Coast. We measured blood levels of various OCs in 53 breeding birds. The OC levels were relatively low compared to levels found in nearby arctic areas. In females, however, there was a significant positive relationship between blood concentrations of OCs, especially hexachlorobenzene (HCB) and, p,p'-dichlorodiphenyldichloroethylene (DDE), and egg laying date, and a positive relationship between the probability of nest predation and blood concentration of beta-hexachlorocyclohexane (beta-HCH), oxychlordane, and DDE. In females with high levels of OCs, especially persistent polychlorinated biphenyls (PCBs), there was also a decline in egg volume as egg laying progressed; i.e. the second and third laid egg were relatively smaller, compared to females with low OC levels. No relationships between reproductive parameters and OC levels were found in males. 相似文献
72.
73.
A method to combine observations and an ensemble of ecological models is suggested to produce a eutrophication assessment.
Using threshold values and methodology from the Oslo and Paris Commissions (OSPAR) and the Helsinki Commission (HELCOM), four
models are combined to assess eutrophication for the Baltic and North Seas for the year 2006. The assessment indicates that
the entire southeastern part of the North Sea, the Kattegat, the
Danish Straits, the Gulf of Finland, and the Gulf of Riga as well as parts of the Arkona Basin, the Bornholm Basin, and the
Baltic proper may be classified as problem areas. The Bothnian Bay and parts of the Baltic proper, the Bornholm Basin, and
the Arkona Basin are classified as potential problem areas. This method is a useful tool for the classification of eutrophication;
however, the results depend on the threshold values, and further work is needed within both OSPAR and HELCOM to harmonize
these values. 相似文献
74.
Shibata Hideaki Galloway James N. Leach Allison M. Cattaneo Lia R. Cattell Noll Laura Erisman Jan Willem Gu Baojing Liang Xia Hayashi Kentaro Ma Lin Dalgaard Tommy Graversgaard Morten Chen Deli Nansai Keisuke Shindo Junko Matsubae Kazuyo Oita Azusa Su Ming-Chien Mishima Shin-Ichiro Bleeker Albert 《Ambio》2017,46(2):129-142
Ambio - Nitrogen (N) management presents a sustainability dilemma: N is strongly linked to energy and food production, but excess reactive N causes environmental pollution. The N footprint is an... 相似文献
75.
Samuelsson Göran S Raymond Caroline Agrenius Stefan Schaanning Morten Cornelissen Gerard Gunnarsson Jonas S 《Environmental science and pollution research international》2017,24(16):14218-14233
Environmental Science and Pollution Research - A field experiment with thin-layer capping was conducted in the Grenland fjords, Norway, for remediation in situ of mercury and dioxin-contaminated... 相似文献
76.
Artigas J Arts G Babut M Caracciolo AB Charles S Chaumot A Combourieu B Dahllöf I Despréaux D Ferrari B Friberg N Garric J Geffard O Gourlay-Francé C Hein M Hjorth M Krauss M De Lange HJ Lahr J Lehtonen KK Lettieri T Liess M Lofts S Mayer P Morin S Paschke A Svendsen C Usseglio-Polatera P van den Brink N Vindimian E Williams R 《Environmental pollution (Barking, Essex : 1987)》2012,160(1):201-206
New concerns about biodiversity, ecosystem services and human health triggered several new regulations increasing the need for sound ecotoxicological risk assessment. The PEER network aims to share its view on the research issues that this challenges. PEER scientists call for an improved biologically relevant exposure assessment. They promote comprehensive effect assessment at several biological levels. Biological traits should be used for Environmental risk assessment (ERA) as promising tools to better understand relationships between structure and functioning of ecosystems. The use of modern high throughput methods could also enhance the amount of data for a better risk assessment. Improved models coping with multiple stressors or biological levels are necessary to answer for a more scientifically based risk assessment. Those methods must be embedded within life cycle analysis or economical models for efficient regulations. Joint research programmes involving humanities with ecological sciences should be developed for a sound risk management. 相似文献