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TitleEffects of oil sands tailings compounds and harsh weather on mortality rates, growth and detoxification efforts in nestling tree swallows (Tachycineta bicolor)
Publication TypeJournal Article
Year of Publication2006
AuthorsGentes, M. - L., Waldner C., Papp Z., & Smits J. E.
Volume142
Pagination24-33
PublisherEnvironmental Pollution
Publication Languageen
Abstract

Oil sands mining companies in Alberta, Canada, are evaluating the feasibility of using wetlands to detoxify oil sands process material (OSPM) as a reclamation strategy. Reproductive success, nestling growth, survival and ethoxyresorufin- o-deethylase (EROD) activity were measured in tree swallows ( Tachycineta bicolor) on experimental wetlands. In 2003, harsh weather triggered a widespread nestling die-off. Mortality rates on the control site reached 48% while they ranged from 59% to 100% on reclaimed wetlands. The odds of dying on the most process-affected sites were more than ten times higher than those on the control site. In 2004, weather was less challenging. Mortality rates were low, but nestlings on reclaimed wetlands weighed less than those on the control site, and had higher EROD activity. These results indicate that compared with reference birds, nestlings from OSPM-impacted wetlands may be less able to withstand additional stressors, which could decrease their chances of survival after fledging. Under natural stress caused by harsh weather, birds exposed to chemicals from the oil sands extraction process suffered higher mortality than those in control areas. Read more...

URLhttp://www.sciencedirect.com/science/article/pii/S0269749105004963
Topics

Biology, Oil & Other Non-renewable Fuels

Locational Keywords

Athabasca Oil Sands

Active Link

http://www.worldcat.org/oclc/4929761934

Group

Science

Citation Key46985

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