Chapter 28
Bevölkerung und Gemeinschaftsökologie
Chapter 28
Population and Community Ecology
Overview
Populations are groups of individuals of the same species that inhabit a shared environment. Communities include multiple co-existing, …
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement …
Overview
Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is …
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of …
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with …
Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those …
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and …
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species …
Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an …
When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. …
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction …
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced …
Coexistence theory has often treated environmental heterogeneity as being independent of the community composition; however biotic feedbacks such as …
Growers often use fungicide sprays during bloom to protect crops against disease, which exposes bees to fungicide residues. Although considered …
The development of microbial communities depends on a combination of complex deterministic and stochastic factors that can dramatically alter the spatial …