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Ozone (tropospheric and stratospheric) and the health state of forest trees. The INRA (Institut National de la Recherche Agronomique) - Nancy search works (France)
1994
Garrec, J.P. (Institut National de la Recherche Agronomique, Champenoux (France). Centre de Nancy, Ecophysiologie Forestiere)
Elaboration of critical load maps in Switzerland
1993
Rihm, B. (Meteotest, Bern (Suisse))
Heavy metal contamination status in soil-plant system in the Upper Mersey Estuarine Floodplain, Northwest England
2019
Enya, Osim | Lin, Chuxia | Qin, Junhao
Globally, soil contamination by heavy metals is common in estuarine floodplains. A study was conducted to assess heavy metal contamination in the soil-plant system in Mersey estuarine floodplain, North West England. Representative composite soil samples and plant samples were collected from nine identified land use types across the study area. Various fraction of heavy metals in soils and plant tissue-borne heavy metals were determined. The results show that the study area has elevated concentrations of As, Cr, Cu, Pb and Zn. Heavy metal concentration in soils was generally higher in the lowlying areas than in the upland portions. There was a trend that concentration of heavy metals increased with increasing depth due to de-industrialisation in the upper catchment. The soil contamination resulted in elevated concentration of heavy metals in the grazed plants, which could pose a risk to wild animals, grazing animals and people who consume the grazing animal meat.
Show more [+] Less [-]A multi-indicator approach for identifying shoreline sewage pollution hotspots adjacent to coral reefs
2018
Abaya, Leilani M. | Wiegner, Tracy N. | Colbert, Steven L. | Beets, James P. | Carlson, Kaile'a M. | Kramer, K Lindsey | Most, Rebecca | Couch, Courtney S.
Sewage pollution is contributing to the global decline of coral reefs. Identifying locations where it is entering waters near reefs is therefore a management priority. Our study documented shoreline sewage pollution hotspots in a coastal community with a fringing coral reef (Puakō, Hawai'i) using dye tracer studies, sewage indicator measurements, and a pollution scoring tool. Sewage reached shoreline waters within 9 h to 3 d. Fecal indicator bacteria concentrations were high and variable, and δ15N macroalgal values were indicative of sewage at many stations. Shoreline nutrient concentrations were two times higher than those in upland groundwater. Pollution hotspots were identified with a scoring tool using three sewage indicators. It confirmed known locations of sewage pollution from dye tracer studies. Our study highlights the need for a multi-indicator approach and scoring tool to identify sewage pollution hotspots. This approach will be useful for other coastal communities grappling with sewage pollution.
Show more [+] Less [-]Determination of critical loads of atmospheric pollutants in natural ecosystems, particularly forests. Basic principles. The Vosges project (France)
1993
Dambrine, E. (Institut National de la Recherche Agronomique, Champenoux (France). Centre de Nancy, Microbiologie Biogeochimie et Pathologie des Ecosystemes Forestiers) | Probst, A. | Party, J.P.
Occurrence and size distribution of microplastics in mudflat sediments of the Cowichan-Koksilah Estuary, Canada: A baseline for plastic particles contamination in an anthropogenic-influenced estuary
2021
Alava, Juan José | Kazmiruk, Tamara N. | Antwood | Schuerholz, Goetz | Heath, Bill | Flemming, Scott A. | Bendell, Leah | Drever, Mark C.
Documenting the prevalence of microplastics in marine-coastal ecosystems serves as a first step towards understanding their impacts and risks presented to higher trophic levels. Estuaries exist at the interface between freshwater and marine systems, and provide habitats for a diverse suite of species, including shellfish, fish, and birds. We provide baseline values for estuarine mudflats using sediment samples collected at Cowichan-Koksilah Estuary in British Columbia, Canada, a biologically-rich estuary. The estuary also contains a marine shipping terminal, forestry log sort area, and input of contaminants from nearby residential and agricultural areas. Microplastics, both fragments and fibers, occurred in 93% (13/14) of sediment samples. A mean of 6.8 microfibers/kg dw (range: 0–12 microfibers/kg dw) and 7.9 microfragments/kg (range: 0–19 fragments/kg dw) occurred in individual samples, and counts of fibers and fragments were strongly correlated (r = 0.78, p = 0.008, n = 14). The abundance of microplastics tended to be higher on the north side of the estuary that receives greater inputs from upland sources relative to the south side. Size distributions of microplastic fragments and fibers were similar to sediment grain size distribution with size categories 0.063 to 0.25 mm and 0.25 to 0.6 mm being the most common for plastics and sediment, indicating the occurrence of microplastics likely followed existing depositional processes within the estuary. Microplastics in sediments were composed of a variety of polymers, including high density polyethylene (HDPE), Nylon 6/6 (polyhexamethylene adipamide), and polyethylene terephthalate-PETE (poly(1,4-cyclohexylene dimethylene terephthalate)). This study indicates that microplastics occur throughout most of the Cowichan-Koksilah Estuary, and future studies should focus on the exposure risk and potential for bioaccumulation for wildlife species that feed on the surface of intertidal mudflats.
Show more [+] Less [-]Atmospheric nitrogen deposition at a conifer forest: response of free amino acids in Engelmann spruce needles
1999
Calanni, J. | Berg, E. | Wood, M. | Mangis, D. | Boyce, R. | Weathers, W. | Sievering, H. (Global Change and Environmental Quality Program, Department of Environmental Sciences, Center for Environmental Sciences, Campus Box 172, University of Colorado at Denver, PO Box 173364, Denver, CO 80217-3364 (USA))
Polish mountain forests: past, present and future
1997
Grodzinska, K. | Szarek-Lukaszewska, G. (W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Krakow (Poland))
Direct damage to vegetation caused by acid rain and polluted cloud: definition of critical levels for forest trees
1993
Cape, J.N. (Institute of Terrestrial Ecology, Bush Estate, Penicuik, Midlothian, EH26 0QB (United Kingdom))
Accumulation of heavy metals in plants grown on mineralised soils of the Austrian Alps
1999
Wenzel, W.W. | Jockwer, F. (Institute of Soil Science, Universitat fur Bodenkultur, Gregor-Mendel-Strasse 33, A-1180 Vienna (Austria))