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Chapter 6

Environmental Science

Exponential Growth J-shaped curve; growth rate is a characteristic of many species that grows rapidly.
Carrying Capacity Maximum population size that the environment can support w/o depleting resources.
R-Selected Rapid population growth
K-Selected Species that reproduces slowly, where a resource is constant but available in limited quantities.
Founder Effect Genetic drift due to a few individuals starting a new population of the same species.
Bottleneck Effect Genetic drift due to a massive population loss.
Can organisms exceed their carrying capacity? Yes, but they may experience shortages of food or their resources leading to a population crash.
J and S curve 1.Logistic growth curve; changing number over time because of the populations density. 2. Exponential growth curve; leads to population crash.
r=B+I-D-E rate= Births+Immigration-Deaths-Emigration
Interspecific Interactions between different species.
How can predation be positive for population size? Rise in resources because of reduction in population.
Options to control invasive species 1. Hunt them to reduce population 2.Limit food sources
How can predation be negative for population size? Predation can limit the population growth
Intraspecific Interactions between the same species.
Created by: NaudJ