- Science can help predict plant growth and production (equations, variables: temperature).
- Is that why Africans are tall (the high temperature, leading to a high rate of metabolism)?
- That's why in hot climates plants grow fast and forests of lush vegetation exist. (Water? Deserts?)
- That's why my plants grew noticeably during hot days.
- Prediction is amazing for size and development for plants, in agriculture!
- Do experiments in balcony on plants.
- How individuals respond to temperature:
- impaired function and ultimately death at the upper and lower extremes
- a functional range between the extremes
- an optimum within the functional range
- "For each 10°C rise in temperature the rate of biological enzymatic processes doubles, and thus appears as an exponential curve on a plot of rate against temperature."
- Temperature affects:
- rates of growth: increases in mass (linear)
- rates of development: progression through lifecycle stages (linear)
- final body size
- Day-degree: number of days to develop X degrees above development threshold
- Physiological time: a combination of time and temperature required for an organism to develop
- "Together, the rates of growth and development determine the final size of an organism."
- "For a given rate of growth, a faster rate of development will lead to smaller final size."
- Temperature-size rule:
- Development increases more rapidly with temperature than does growth
- Thus final size decreases with rising temperature
- Effects of temperature on growth, development and size has practical importance for prediction.