BIOLOGY 2F03 Lecture Notes - Intraspecific Competition, Ecological Niche, Limiting Factor
Document Summary
Competition resource limitations and intraspecific competition the niche. Mathematical and laboratory models produce insights competition affects niches in ecological and evolutionary time. Would all species have the same carrying capacity, k, when they live in the same habitat/place: no. Nitrogen is a limiting nutrient for the grass s. nutans. S. nutabs was grown at high and low densities of nitrogen availability. Low densities: getting bigger as you added more nitrogen. Nitrogen liberating only if you were in low densities. Nitrogen not liberating if you grow in high densities. With n available, plants grow large when grown at low density. Okabts fail to gain size when grown at high density. Plants produce to many seeds to have them successfully survive, stunted, would die very easily, would not reproduce. Many of the small and crowded plants die consequence: population will move to lower density, producing healthier and stronger individuals. Self-thinning in alfalfa populations initially plants planted at high density.
