REN R495 Lecture Notes - Lecture 7: Ecological Succession, Climax Species, Predictable Process
Document Summary
Act or process of following in order of sequence. The shifting pattern of species and species abundance over time in response to physical and biological factors. An orderly, directional and predictable process of plant community development, resulting from modification of the physical environment by the community and culminating in a stabilized ecosystem odum 1969. A progressive alteration in structure and composition of vegetation grime 1979: problematic definition. A process of individual plant or species replacement and a change in performance of individuals pickett et al 1987. A completely hazard confluence of individuals with little predictability: may not be orderly. Variable time scales: 1 2 3, 1 ---------- 2 3. Variable # of stages: 1 ----------- 3, 1---->2 3 4. Microclim ate weather relationships: vector for seed dispersal equilibrium fluctuating equilibrium due. Soil properties to natural variability in the physical and biological environment. Initiated on bare ground where no vegetation has grown before.