lecture 2 Flashcards
What is Ecology
Scientific study of interactions between organisms and their environment in a hierarchy of levels of organization: individuals, populations, communities, and ecosystem
Biosphere
All space occupied by living things on Earth
Ecosystem
A region containing interacting abiotic and biotic factors
Community
Population of species that occur together in the same space and time
Population
Individuals of the same species that occur together in the same space and time
Individual
Living entities that are genetically and physically discrete
Autoecology
interactions between individuals (or individual species) with their environment, usually studies behaviour or physiology of individuals
i.e. study of a lion or an eagle in their habitat
Population ecology
processes that influence population structure and dynamics, such as birth and mortality rates (lots of numbers)
i.e. how hunting affects grizzly bear population
Community Ecology
interactions between species or factors that influence structures of communities (diversity)
Ecosystem Ecology
how organisms and chemical and physical processes interact
energy flow and nutrient cycling are focuses
i.e how a wildfire affect soil nutrient cycling in forests
Landscape Ecology
how landscape patterns influence ecological processes and vice versa
human-altered landscape are focused
i.e. effects of roads on animal movement
Macroecology
processes at large spatial scales, like a region, a continent or several continents
focuses on organismal abundance, distribution and diversity
i.e how conifers are distributed
Global Ecology
processes at the global scale, all life in our planet
global climate change is a key study
Collaboration
Larger scale branches of ecology (macro and global) require a lot of collaboration between numerous disciplines (stats, data science, physics etc.)
Temporal Scales
measurement in time