خيارات البحث
النتائج 2221 - 2230 من 62,084
Bioaccumulation of persistent organic pollutants in female common dolphins (Delphinus delphis) and harbour porpoises (Phocoena phocoena) from western European seas: geographical trends, causal factors and effects on reproduction and mortality
2008
Pierce, G. J. | Santos, M. B. | Murphy, S. | Learmonth, J. A. | Zuur, A. F. | Rogan, E. | Bustamante, P. | Caurant, F. | Lahaye, V. | Ridoux, V. | Zegers, B. N. | Mets, A. | Addink, M. | Smeenk, C. | Jauniaux, Thierry | Law, R. J. | Dabin, W. | Lopez, A. | Alonso Farre, J. M. | Gonzales, A. V. | Guerra, A. | Garcia-Hartmann, M. | Reid, R. J. | Moffat, C. F. | Lockyer, C.
peer reviewed | female common dolphins and harbour porpoises from the Atlantic coast of Europe were frequently above the threshold at which effects on reproduction could be expected, in 40% and 47% of cases respectively. This rose to 74% for porpoises from the southern North Sea. PCB concentrations were also high in southern North Sea fish. The average pregnancy rate recorded in porpoises (42%) in the study area was lower than in the western Atlantic but that in common dolphins (25%) was similar to that of the western Atlantic population. Porpoises that died from disease or parasitic infection had higher concentrations of persistent organic pollutants (POPs) than animals dying from other causes. Few of the common dolphins sampled had died from disease or parasitic infection. POP profiles in common dolphin blubber were related to individual feeding history while those in porpoises were more strongly related to condition. High PCB levels were recorded in porpoises and common dolphins from European coasts.
اظهر المزيد [+] اقل [-]Indices for the assessment of environmental pollution of the Baltic Sea coasts: Integrated assessment of a multi-biomarker approach
2006
Broeg, Katja | Lehtonen, K. K.
Biomonitoring of air pollutants with plants - Considerations for the future
2004
Temmerman, L. De | Bell, N.B. | Garrec, J.P. | Klumpp, A. | Krause, G.H.M. | Tonneijck, A.E.G.
Tuna and dolphin associations in the Northeast Atlantic: Evidence of different ecological niches from stable isotope and heavy metal measurements
2000
Das, Krishna | Lepoint, Gilles | Loizeau, Véronique | Debacker, Virginie | Dauby, Patrick | Bouquegneau, Jean-Marie
peer reviewed | Associations of tunas and dolphins in the wild are quite frequent events and the question arises how predators requiring similar diet in the same habitat share their environmental resources. As isotopic composition of an animal is related to that of its preys, stable isotopes (13C/12C and 15N/14N) analyses were performed in three predator species from the Northeast Atlantic: the striped dolphin, Stenella coeruleoalba, the common dolphin Delphinus delphis, and the albacore tuna, Thunnus alalunga, and compared to their previously described stomach content. Heavy metals (Cd, Zn, Cu and Fe) are mainly transferred through the diet and so, have been determined in the tissues of the animals. Tunas muscles display higher delta15N than in common and striped dolphins (mean: 11.4 0/00 vs. 10.3 0/00 and 10.4 0/00, respectively) which reflects its higher trophic level nutrition. Higher delta13C are found in common (-18.4 0/00) and striped dolphin (-18.10/00) muscles than in albacore tuna (-19.3 0/00) likely in relation with its migratory pattern. The most striking feature is the presence of two levels of cadmium concentrations in the livers of the tunas (32 mg kg-1 dry weight vs. 5 mg kg-1 dry weight). These two groups also differ by their iron concentrations and their delta15N and delta 13C liver values. These results suggest that in the Biscay Bay, tunas occupy two different ecological niches likely based on different squid input in their diet.
اظهر المزيد [+] اقل [-]Polysaccharide and xenobiotic metabolizing enzymes as biomarkers of contamination of Lymnaea palustris (Mollusca, Gastropoda) by atrazine and hexachlorobenzene in freshwater mesocosms
1995
Baturo, W. | Lagadic, Laurent | Caquet, Thierry
Photooxidation of carbonyl sulfide (SCO) by ozone studies of the reaction mechanisms in the gas phase and solid argon matrices
1991
Jaeger, K. | Weller, Rolf | Schrems, Otto
Pelagic tar in the Mediterranean Sea
1988
Golik, A. | Weber, Kurt | Salilhoglu, I. | Yilmaz, A. | Loizides, L.
Effect of cropping and tillage on the dissipation of PAH contamination in soil
2004
Saison, Carine | Perrin-Ganier, C. | Schiavon, Michel | Morel, J.L. | Laboratoire Sols et Environnement (LSE) ; Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL)
International audience
اظهر المزيد [+] اقل [-]Biomonitoring of air polluants with plants : considerations for the future
2004
de Temmerman, Ludwig | Bell, Nigel | Garrec, Jean-Pierre, J.-P. | Klumpp, Andreas | Krause, Georg | Tonneijck, Alfred | Sciensano [Bruxelles] ; Pasteur Network (Réseau International des Instituts Pasteur) | Imperial College London | Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (EEF) ; Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL) | Institute for Landscape and Plant Ecology ; University of Hohenheim | Landesumweltamt Nordrhein Westfalen ; Partenaires INRAE | Wageningen University and Research [Wageningen] (WUR)
International audience
اظهر المزيد [+] اقل [-]A microbial biosensor to predict bioavailable nickel in soil and its transfer to plants
2001
Tibazarwa, C. | Corbisier, P. | Mench, Michel | Bossus, A. | Solda, P. | Mergeay, Max | Wyns, L. | van Der Lelie, D. | Unité d'agronomie ; Institut National de la Recherche Agronomique (INRA)
International audience
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