Chapter 5 Vocabulary Flashcards
Food Webs
Food chain interelationships
Food Chains
A diagram showing a series of organisms and what they eat
Biotic Structure
The way different categories of organisms fit together
Trophic Structure
The major feeding relationships between organisms
Trophic categories
Producers, Consumers Decomposers
Chlorophyll
Green pigment
Chemosynthesis
Uses the energy in inorganic chemicals to form organic matter
Autotrophs
Produce their own organic material from inorganic constituents through the use of an external energy source
Organic
Containing carbon
Inorganic
Containing no carbon
Heterotrophs
Must consume organic material to obtain energy
Herbivores
Eat plants
Carnivores
Eat meat
Omnivores
Eat plants and meat
Detrivore
Organisms that feed on dead or dying organisms
Decomposers
A type of Detrivore that feeds on rotting leaves and would to return the nutrients back into the environment
Parasites
Consumers feeding on their host
Detritus
Dead plant material, such as fallen leaves, branches and tree trunks
Primary Detritus Feeder
Organisms that feed directly on the dead material
Secondary Detritus Feeders
Feed on the decomposers
Biomass
Total combined weight of all Organisms at each trophic level
Trophic Pyramid
Producers are on the bottom and tertiary consumers on the top
Climate
Average temperature and percipitation
Percipitation
Rainfall
Permafrost
Permanently frozen subsoil which prevents the growth of trees
Microclimate
The conditions found in a specific localized area
Equilibrium Theory
Ecosystems that are stable because of healthy predator to prey relationships
Ecological Sucession
The orderly and progressive replacement of one community to another until a climax is reached
Pioneer Species
Start the process of ecological succession
Facilitation
The process by which pioneer species beginning succession
Climax Ecosystem
An ecosystem that has a dynamic balance between all of the species in the environment
Primary Sucession
Occurs in areas with bare rock and there is no soil present
Secondary Sucession
An ecosystem destroyed however soil remains
Aquatic Sucession
When a small lake or pond transforms into a terrestrial ecosystem
Fire Climax Ecosystems
Ecosystems that are dependent on fire for maintaing the ecosystem
Chapparal
An ecosystem which has wet winters and dry summers with fires
Resilience
Helps maintain the sustainability of the ecosystems