BSC 2011C Lecture Notes - Lecture 34: Unified Modeling Language, Ecological Footprint, Carrying Capacity
Document Summary
Population ecology: study of populations in relation to environment including environmental influences on density and distribution, age and size. Density: number of individuals per unit or volume. Dispersion: pattern of spacing among individuals within the boundaries of a population. Density affected by 4 factors: birth, death, immigration, emigration. Patterns of dispersal: clumped, random, uniform. Clumped dispersal: aggregate in patched, influences by available resources. Uniform dispersal: evenly distributed individuals, influenced by territory and social behavior. Random dispersal: position is independent of other individuals, often plants dispersed by wind. Demography is the study of vital statistics of a population and how they change over time: ex. Life table: age specific summary of the survival pattern of a population, fate of a cohort. Following a population of individuals of the same age from birth to. Survivorship curve death: representation of data gathered from a life table, 3 types. Type 1: low death rates during early and middle life, increase among older.
