TY  - GEN
AU  - Sheil,Douglas
TI  - A critique of permanent plot methods and analysis with examples from Budongo forest, Uganda
KW  - Monitoring
KW  - tropical rain forest
KW  - forest dynamics
KW  - mortality
KW  - growth
KW  - recruitment
N2  - Permanent sample plot (PSP) studies a major role in ecological and management research.  Bias and error may arise in such studies at each stage of the assessment procedure from plot establishment through to data interpretation, and can undermine confidence in the use of PSP data.  This paper considers these problems and suggests how they might be identified and minimised.  Examples are taken from Budongo Forest, Uganda, which provides some of the World's longest-term PSP data from both primary and treated tropical forest (1939-1993 and 1933-1992 respectively)
ER  -