title: Population Trend of the World's Monitored Seabirds, 1950-2010.
abstract: Seabird population changes are good indicators of long-term and large-scale change in marine ecosystems, and important because of their many impacts on marine ecosystems. We assessed the population trend of the world's monitored seabirds (1950-2010) by compiling a global database of seabird population size records and applying multivariate autoregressive state-space (MARSS) modeling to estimate the overall population trend of the portion of the population with sufficient data (i.e., at least five records). This monitored population represented approximately 19% of the global seabird population. We found the monitored portion of the global seabird population to have declined overall by 69.7% between 1950 and 2010. This declining trend may reflect the global seabird population trend, given the large and apparently representative sample. Furthermore, the largest declines were observed in families containing wide-ranging pelagic species, suggesting that pan-global populations may be more at risk than shorter-ranging coastal populations.
authors.affiliation: University of British Columbia, Vancouver, British Columbia, Canada.
authors.forename: Michelle
authors.initials: M
authors.lastname: Paleczny
authors.affiliation: University of British Columbia, Vancouver, British Columbia, Canada; School of the Environment, University of Technology, Sydney, Ultimo, New South Wales, 2007, Australia.
authors.forename: Edd
authors.initials: E
authors.lastname: Hammill
authors.affiliation: University of British Columbia, Vancouver, British Columbia, Canada.
authors.forename: Vasiliki
authors.initials: V
authors.lastname: Karpouzi
authors.affiliation: University of British Columbia, Vancouver, British Columbia, Canada.
authors.forename: Daniel
authors.initials: D
authors.lastname: Pauly
mesh_terms: D000818:Animals; D046091:Charadriiformes / Q000502:physiology*; D017753:Ecosystem; D011156:Population Density; D011157:Population Dynamics / Q000639:trends*