Posts tagged 2014
Climate change alters the trophic niche of a declining apex marine predator

We measured stable isotope values in Australian Flesh‐footed Shearwaters. During 1936–2011, the species more than doubled their trophic niche and dropped an entire trophic level in 75 years – the largest change in δ15N yet reported in any marine bird, suggesting a relatively rapid shift in the composition of the Indian Ocean food web.

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Reduced vitamin A levels indicate radionuclide exposure in Streaked Shearwaters (Calonectris leucomelas) following the 2011 Fukushima nuclear accident.

We examined the physiological responses of Streaked Shearwater chicks to possible radiation exposure during the 2011 breeding season, four to seven months after the Fukushima nuclear accident. Fledglings from Mikura Island (nearest Fukushima) displayed significantly reduced vitamin A levels.

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Plastic ingestion by Flesh-footed Shearwaters (Puffinus carneipes): implications for fledgling body condition and the accumulation of plastic-derived chemicals

We sampled breast feathers and stomach contents from Flesh-footed Shearwater fledglings. Birds with high levels of ingested plastic exhibited reduced body condition and increased contaminant load (p < 0.05). More than 60% of fledglings exceed international targets for plastic ingestion by seabirds.

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