Test 1 Chapter 2 Definitions Flashcards
Anthropogenic
- human induced changes on natural environment
Biotic
Living factors in an environment
Abiotic
Non living factors in an ecosystem
For example, climatic features such as sunlight and humidity, organic substances such as water and protein
Environments
Refers to everything around them, both living (biotic) and non living (abiotic)
Ecosystems
- all the organisms in a given area
- as well as the abiotic factors they interact
- can also interact with one or more communities and the physical environment around them
Natural biome
Large scale concept and tends to focus on the biotic element of an area
Forest environments
- forests cover about 1/3 of the world
- store much of the worlds carbon
- contain 80% of worlds terrestrial biodiversity
Agricultural environments
- defined as plant and farming in order to sustain and enhance life
Urban environments.
- characterised by a city with large urban buildings in a limited place
Anthropogenic biomes
Human biomes showing human impact on the terrestrial biosphere
Growth of human impact has been rapid, expansive and has a large impact on natural biomes
Land cover change
- changes taken place in natural environments as a result of human and natural induced causes
Urbanisation
- proportion of the people living in urban areas will see more of the worlds population living in metropolitan areas or cities
Deforestation
- removal or clearing of forests for urban and agricultural development
- types include, fires, logging for timber, and degradation from climate change
Sustainability
Meeting the needs of the present without disrupting the ability for future generations to meet their needs
Biodiversity loss
- diminishing of species within an ecosystem
- the species that make up the ecosystem determine its productivity, affect nutrient cycles and soil content
- species also influence environmental conditions, such as water cycles, weather patterns, climate and non biotic aspects
- loss of one species affects many others causing an imbalance