Table 2. Estimates of mean (±s.e.) intensity of selection per year based on temporal variation of morph frequencies in the Acacia habitat.

Method	Against	s±s.e.
Based on trend interval
1977–2010	FB	0.015±0.004
1977–1980	EUB	0.211±0.054
1982–1985	FB	0.127±0.049
1990–1993	FB	0.301±0.040
Direct year to year
Phenotypic	Mixed	0.122±0.022
Single locus	Mixed	0.135±0.025

Abbreviations: EUB, effectively unbanded; FB, fully banded.