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. 2017 Feb 18;46(Suppl 2):241–250. doi: 10.1007/s13280-016-0885-3

Table 2.

Proportions (mean % across years, with standard deviation) of total white-fronted goose days spent within designated goose foraging areas by the four study species, during 10 winters before the implementation of the new management policy (1995/1996–2004/2005) and during six of eight winters under the new policy (2005/2006–2007/2008 and 2010/2011–2012/2013). Proportions under the new policy are given both as based on mapped flock positions (‘mapping’) and on assignment of totals proportional to the relative area of designated land within counting units (‘prop. ass.’, directly comparable with the ‘prior’ period; conversion based on data from 2005/2006 to 2007/2008). For the policy period, linear trends over time of the proportion within designated foraging areas (based on a binomial GLM) are also given

Species 1995/1996–2004/2005 2005/2006–2012/2013
Prop. ass. Prop. ass. Mapping Trend
Mean SD Mean SD Mean SD %/year SE P
Pink-footed goose 54.8 6.8 43.6 7.0 55.6 7.0 –0.028 0.313 0.97
White-fronted goose 53.2 6.4 48.6 4.1 55.1 4.1 –0.003 0.312 1.00
Greylag goose 57.2 5.4 47.6 3.2 49.6 3.2 0.009 0.311 0.98
Barnacle goose 65.3 3.9 67.3 3.8 73.8 3.8 0.009 0.353 0.98
All 4 species 56.6 4.5 52.1 2.2 57.4 2.2 0.008 0.313 0.98