The incidence of polychlorinated biphenyl and organochlorine pesticide residues in the eggs of the cormorant (Phalacrocorax carbo sinensis): an evaluation of the situation in four Greek wetlands of international importance
Φόρτωση...
Ημερομηνία
Συγγραφείς
Konstantinou, I. K.
Goutner, V.
Albanis, T. A.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Science of the Total Environment
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
This study contributed to identifying the current levels of organochlorine pollutants in four Creek wetlands of international importance (the Evros and Aries Deltas, and Kerkini and Prespa Lakes), using the cormorant Phalacrocorax carbo sinensis as a suitable bioindicator in a region where such information is scarce. Residue levels of eight polychlorinated biphenyl (PCB) congeners and 13 organochlorine pesticide (OC) compounds were measured in cormorant eggs. Most PCBs and OCs (except dieldrin and endrin) were found in at least some of the study areas. Median concentrations of five PCBs (IUPAC 8, 20, 52, 138, 180) and of six OCs (alpha-BHC, beta-BHC, lindane, heptachlor, 4,4'-DDE and 4,4'-DDT) differed significantly among the areas. The median totals of the PCBs were highly significant among the areas, being unexpectedly highest in Prespa Lake (68.43 ppb), despite its remoteness, and lowest in Evros Delta samples (12.17 ppb). Aldrin that was found in samples from Evros, Aries and Prespa probably accumulated in wintering grounds. In all of the areas, the relative proportions of alpha-BHC and 2,4'-DDD were the highest of all OCs. Fingerprint and cluster analyses illustrated overall differences in the PCB patterns, being greatest between the deltas than between the lakes, but, inversely, for OCs the differences were smaller in the deltas. Differences were attributed to targe variations in the cormorants' diet between areas and different regimes of pollutant management in the two types of wetland. Correlations of pollutants varied considerably among areas and they were more diverse in OCs. The Sigma OCs/Sigma PCBs ratio indicates agrochemical pollution in all areas. An important finding was that levels of both pollutant groups were too low to have any biological implications on the cormorants and, additionally, suggest that they have a negligible impact on the environment of the wetlands studied. (C) 2000 Elsevier Science B.V. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
polychlorobiphenyls, organochlorine insecticides, phalacrocorax carbo sinensis, greek wetlands, double-crested cormorants, brown pelican eggs, pelagic food-web, great-lakes, pcb congeners, reproductive success, thermaikos gulf, chlorinated hydrocarbons, dibenzofurans pcdfs, common cormorants
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000088352800006
http://ac.els-cdn.com/S0048969700005003/1-s2.0-S0048969700005003-main.pdf?_tid=2256a2168af4f7955bc15e1660646803&acdnat=1333023018_ceef0a0ae65248852b491ecdeb4c095d
http://ac.els-cdn.com/S0048969700005003/1-s2.0-S0048969700005003-main.pdf?_tid=2256a2168af4f7955bc15e1660646803&acdnat=1333023018_ceef0a0ae65248852b491ecdeb4c095d
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας