Using either temporal or spatial patterns of temperature and concurrent growth
processes in established plants has a number of advantages. Plants growing along
thermal gradients have had time to adjust, grow in undisturbed soil and under a
natural variation of temperature. The dichotomy of (a) studying plants of one species
across the thermal range of that species versus (b) studying plants in the centre
of the range of species restricted to different thermal ranges offers the study of
contrasting evolutionary history and likely genetic adaptation (K¨orner, 2003a). The
inclusion of invasive species permits tracking rapid evolutionary processes. On
the other hand, the in situ study of the influence of short-term natural variation
in temperature on metabolism and growth provides information on instantaneous
response characteristics in a natural situation. Comparing data for plants that have
experienced different thermal prehistory also permits exploring acclimative trends.
These classical approaches (e.g. Gallagher et al., 1979; Ford et al., 1987; K¨orner &
Woodward, 1987; James et al., 1994) are under-represented tools in experimental
biology.
Using either temporal or spatial patterns of temperature and concurrent growth
processes in established plants has a number of advantages. Plants growing along
thermal gradients have had time to adjust, grow in undisturbed soil and under a
natural variation of temperature. The dichotomy of (a) studying plants of one species
across the thermal range of that species versus (b) studying plants in the centre
of the range of species restricted to different thermal ranges offers the study of
contrasting evolutionary history and likely genetic adaptation (K¨orner, 2003a). The
inclusion of invasive species permits tracking rapid evolutionary processes. On
the other hand, the in situ study of the influence of short-term natural variation
in temperature on metabolism and growth provides information on instantaneous
response characteristics in a natural situation. Comparing data for plants that have
experienced different thermal prehistory also permits exploring acclimative trends.
These classical approaches (e.g. Gallagher et al., 1979; Ford et al., 1987; K¨orner &
Woodward, 1987; James et al., 1994) are under-represented tools in experimental
biology.
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