Sites of the Baffin Island Oil Spill (BIOS) project (Cape Hatt, Baffin Island, Canadian Arctic) were revisited nearly 40 years after the original oil application to provide long-term monitoring data for Arctic oil spill research. Surface and subsurface sediment samples were collected from the intertidal zone of the 1981 nearshore oil spill experiment (Bay 11), from 1980 supratidal control plots (Crude Oil Point) and 1982 supratidal treatment plots (Bay 106). Samples were analyzed for Polycyclic Aromatic Hydrocarbons (PAHs) and alkylated homologues using an Agilent 7010B Triple Quadrupole GC/MS system in the MRM mode. Our results suggest that total mean concentrations of all monitored PAHs range from 0.05 – 14 mg/kg, whereas total mean concentrations of the 16 EPA priority PAHs range from 0.003 – 3 mg/kg. All three sites featured samples where concentrations of various priority PAHs exceeded the established Interim Marine Sediment Quality Guidelines. All supratidal samples contained potentially toxic levels of PAHs. Even after nearly four decades of weathering, the recalcitrant crude oil residues remain a potential hazard for the native organisms. Continued monitoring of this unique study site is crucial for establishing a timeline for oil degradation, and to observe a reduction in toxicity over time.
Abstract Benomyl and thiabendazole (TBZ) fungicides incorporated into soil greatly depressed the growth of seedlings of American elm ( Ulmus americana L.), marigold ( Tagetes sp.), buckthorn ( Rhamnus frangula L.), sycamore ( Platanus occidentalis L.), and, to a lesser degree, silver maple ( Acer saccharinum L.). Both chemicals were phytotoxic to sycamore. Pepper ( Capsicum sp.), tomato ( Lycopersicon esculentum Mill.), and bean ( Phaseolus vulgaris L.), were less sensitive than the other species when grown in benomyl-treated soil. The growth of corn ( Zea mays L.) and that of pea ( Pisum sativum L.) were not affected. The growth of turfgrass was stimulated by benomyl. Neither benomyl nor TBZ affected the time of seed germination of American elm and marigold. Seedlings of these species, when transplanted to unamended soil, resumed normal growth. The activity of benomyl that had been incorporated into air-dried soil for 10 months was still high, but less than its activity in a fresh mix.
LA SESSION D'INTRODUCTION ET LA SESSION I COMPRENNENT LES COMMUNICATIONS SUIVANTES ET LE RESUME DES DISCUSSIONS S'Y RAPPORTANT : EXPOSE D'INTRODUCTION (TURGEL,J). RECHERCHES ACTUELLES AUX ETATS-UNIS SUR LES ROUTES ET L'ENVIRONNEMENT URBAIN (LOVE,GD)- AVANTAGES ET INCONVENIENTS DES INDICES UTILISES POUR CARACTERISER LE BRUIT DE LA CIRCULATION (LAMURE,C) - EVALUATION DES BRUITS DE LA CIRCULATION SUR LES ROUTES FEDERALES ET SUR LES AUTOROUTES A L'AIDE DU NIVEAU LST (LENZ,KH) - INCIDENCE DES POIDS LOURDS SUR LES NIVEAUX DE BRUIT SUR VOIE RAPIDE URBAINE (FAVRE,B) - CARACTERISATION TEMPORELLE DES FLUCTUATIONS DU NIVEAU DE BRUIT D'UN TRAFIC ROUTIER (DESCORNET,G) - UN MODELE DE PREVISIONS A L'ORDINATEUR DES NIVEAUX DE BRUIT DE LA CIRCULATION POUR RESOUDRE DES PROBLEMES DE PLANIFICATION (NELSON,PM)- CALCUL ET REPRESENTATION DES SITUATIONS DE BRUIT DANS LES ZONES URBAINES A L'AIDE D'ORDINATEURS : FONDEMENTS, METHODE ET RESULTATS (THOMASSEN,HG) - PREVISION DE LA DISTRIBUTION DES BRUITS DE LA CIRCULATION A L'AIDE D'UN MODELE STATISTIQUE (GLOECKNER,W) - PREDICTION DES NIVEAUX DE BRUIT ENGENDRE PAR UNE CIRCULATION AUTOMOBILE EN ZONE URBAINE (FAVRE,B) - EQUATION POUR PREVOIR LE BRUIT DU TRAFIC ROUTIER ET MESURES POUR LE COMBATTRE (KANEYASU,K) - LES BARRIERES ANTI-BRUIT, CONCEPTION, REALISATION ET EFFICACITE (LENZ,KH) - INFLUENCE DE LA NATURE DE LA CHAUSSEE SUR LE BRUIT PRODUIT PAR LE CONTACT PNEU-CHAUSSEE (GACHIGNARD,G - SARDIN,P) - PLANIFICATION URBAINE ET BRUIT PROVENANT DE LA CIRCULATION ROUTIERE (BLUECHER,G) - INCIDENCES DES MODIFICATIONS DES PROGRAMMES DE GESTION DU TRAFIC URBAIN SUR LE CLIMAT SONORE D'AMBIANCE (MUNOZ SANCHO,M) - ETUDES ET REALISATION DE PROTECTION CONTRE LE BRUIT EN REGION PARISIENNE (PAULIK,L) - SONS ET VIBRATIONS PROVENANT DE LA CIRCULATION ET TRANSMIS EN MILIEU SOLIDE (SCHREIBER,L) - LES VIBRATIONS ET LA CIRCULATION ROUTIERE AU ROYAUME UNI (HARLAND,DG) (VOIR FICHE GENERALE NO. 112338 - EGALEMENT FICHE EN ANGLAIS SOUS NO. 217085).
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