Presentation is loading. Please wait.

Presentation is loading. Please wait.

Contaminants can enter foodwebs After being transported to the Arctic by air and ocean currents and by rivers, contaminants can bioaccumulate and biomagnify.

Similar presentations


Presentation on theme: "Contaminants can enter foodwebs After being transported to the Arctic by air and ocean currents and by rivers, contaminants can bioaccumulate and biomagnify."— Presentation transcript:

1

2

3 Contaminants can enter foodwebs After being transported to the Arctic by air and ocean currents and by rivers, contaminants can bioaccumulate and biomagnify in food-chains

4 Effect studies in glaucous gulls Lower thyroxin levels Higher progesterone levels Lower prolactin levels Lower basal metabolic rate Lower adult return rate Lower white cell count Higher intensity of parasites DNA adduct formation Higher CYP enzyme activity Lower nesting success Higher rate of wing feather asymmetry Inefficient heath transfer to eggs Reduced nest site attentiveness Lower antibody response Higher number of nonviable eggs Poorer hatching condition of chicks Skewed chick sex ratio Egg resource allocation Contaminant exposure


Download ppt "Contaminants can enter foodwebs After being transported to the Arctic by air and ocean currents and by rivers, contaminants can bioaccumulate and biomagnify."

Similar presentations


Ads by Google