Factors affecting plumage oiling levels in a Kentish Plover Charadrius alexandrinus population after a major oil spill

• Autorzy: Dominiguez J. , Vidal M.

Warianty tytułu

PL

Czynniki wpływające na poziom zanieczyszczenia upierzenia sieweczki morskiej produktami ropopochodnymi po katastrofie tankowca

• Języki publikacji: EN

Abstrakty

EN

The oil tanker Prestige, with a 77 000-tonne cargo of heavy fuel oil, was badly damaged on 13 November 2002 off the Galician coast (NW Spain), where it leaked about 63 000 tonnes of oil. During the winter of 2002 and spring of 2003, we studied the degree of oil contamination in the plumage of the Kentish Plover Charadrius alexandrinus. Using the Generalized Estimated Equations (GEE), we evaluated the hypothesis that the presence of oiled birds in the breeding period could be influenced by 1) the location of the beach (estuarine versus non-estuarine), 2) the presence of an intertidal area in the lagoon associated with the beach, 3) the distance from the initial spill location and 4) the month. The worst affected body parts were the abdomen, and, to a lesser extent, the breast. The location of the beach was the only predictor included in the final model. The beaches with the highest average scores of oiled birds were those located on the non-estuarine coast. The other two predictors with significant parameters in the univariate analysis were the distance from the initial spill location and the month.

PL

Tankowiec Prestige przewożący 77000 ton mazutu został uszkodzony i zatonął u wybrzeży płn.-zach. Hiszpanii 19.11.2002, powodując znaczne skażenie środowiska. Zimą 2002 i wiosną 2003 badano stopień zanieczyszczenia produktami ropopochodnymi upierzenia sieweczki morskiej na 17 plażach wybrzeża Galicji (Fig. 1). Dla każdego obserwowanego ptaka zapisywano stopień pokrycia mazutem wybranych części ciała: brzucha, piersi i szyi, głowy oraz lewego i prawego skrzydła. Pokrycie opisywano jako: słabe — < 1/3 danej części ciała, średnie — między 1/3 a 2/3 powierzchni i silne > 2/3 powierzchni danej części ciała. Następnie dodając wszystkie wartości tworzono indeks zanieczyszczenia upierzenia. Analizowano, czy stopień skażenia ptaków zależy od: odległości plaży od miejsca zatonięcia tankowca, obecności wewnątrz plaży terenów pływowych, położenia plaży w estuariach rzek oraz miesiąca obserwacji. Stwierdzono, że najczęściej zanieczyszczony mazutem był brzuch ptaków, w mniejszej części pierś (Fig. 2, 3). Czynnikami wyjaśniającym stopień zabrudzenia upierzenia były miesiąc i odległość od zatonięcia tankowca, ale w ostatecznym modelu jedynym istotnym czynnikiem było położenie plaży w estuariach rzek (Tab. 1). W takich miejscach ptaki były najmniej zanieczyszczone. Wraz z upływem czasu zanieczyszczenie upierzenia zmniejszało się liniowo zarówno u samców jak i samic (Fig. 4).

Słowa kluczowe

EN

Kentish Plover; Charadrius alexandrinus; plumage; oiling level; animal population; bird; oil spill

• Wydawca: -
• Czasopismo: Acta Ornithologica
• Rocznik: 2009
• Tom: 44
• Numer: 2
• Opis fizyczny: p.119-126,fig.,ref.

Twórcy

autor

Dominiguez J.

• Department of Zoology and Physical Anthropology, Faculty of Biology, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain

autor

Vidal M.

• Department of Zoology and Physical Anthropology, Faculty of Biology, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain

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Identyfikatory

DOI

10.3161/000164509X482696