Cerrar
Ecology definition
Population definition
Ecosystems definition
Birth rate definition
Population definition
Community definition
Habitat definition
Immigration definition
Equilibrium species definition
Ecosystem changes
Ecosystem changes pt 2
Factors controlling population size
Ecosystem changes pt 3 population
Things affecting population size
What determines population size
Population size- fugitive/ equilibrium
Fugitive
Equilibrium species
Diagram of pop growth
Niche definition
Biotic
Abiotic
Population size- lag phase
Growth curve- what is it
One step growth curve- bacteria
But...
One step growth curve- animals- lag/ log phase
One step growth curve- animals-stationary phase
One step growth curve- animals-death phase
Environmental resistance and carrying capacity
Negative feedback example
Calculating pop increase from a graph
other calculations
Factors that regulate population increase- density dependent
Factors that regulate population increase- density independent
Populations fluctuate in numbers
look at diagram for negative feedback
Abundance and distribution of organisms in a habitat
New habitat
Measuring abundance
Measuring abundance plant species
Measuring distribution
measuring distribution pt 2
Kite diagram
Ecosystems
Ecosystems can be...
Ecosystem examples
Energy and ecosystems
Energy and ecosystems pt2
Continuation of theory
Biotic components of an ecosystem- habitats
Biotic components of an ecosystem- Communities
Community ecology
Biotic components of an ecosystem- biomass transfer
Food chains
Why does only small proportion of energy reach plant as light is incorporated into plants tissues
Food chains pt2
Decomposition
Difference- detritivores and decomposers
Food web chains and their length
Food chain pt 2
look at diagram photosynthetice efficiency
Photosynthetic efficiency- maths
Primary productivity
Primary productivity pt 2
Energy flow through food chains
Why is energy lost along food chain
Herbivores vs carnivores
Fate of energy in consumers
Calculating efficiency of enregy transfer
Ecological pyramids
Ecologocal pyramids- pros and cons
Pyramid of numbers pros and cons
Pyramid of energy
Pyramid of biomass pt 1
pyramid of biomass judgement
pyramid of biomass judgement pt 2
Inverted pyramid of biomass
Community and Succession
Succession- general definition
Primary succession/ climax community
Primary succession and seral stages
Primary succession stage 1- pioneer species
Primary succession stage pt2
Primary succession stage- pt 3
Primary succession- stage 4
Primary succession- stage 5
Primary succession pt 6
Climatic climax community
The climax community is balanced with...
Xerosere
Secondary succession
primary and secondary compare
Disclimax
Sometimes disclimax can be good for other species
Factors affecting succession
Types of competition/ how does it affect succession
Types of competition/ how does it affect succession pt 2
Gause
Facillitation
Mutualism
Commensalism
recycling nutrients
Carbon cycle
What human act causes more CO2 to be released
Carbon cycle- 3 major processes
Carbon cycle- where is carbon stored
Carbon cycle photosynthesis
Carbon cycle- sedimentation
Carbon cycle - respiration
Carbon cycle- feeding and decomposition
carbon cycle diagram- save my exams
In aquatic ecosystems
Human impact on carbon cycle
Greenhouse effect
Global warming
global warming effects
Global warming effects pt2
Global warming and farming-CO2
Global warming and farming-methane
Global warming and farming-methane- pt2
Global warming and farming-others
Carbon footprint
Indirect sources of greenhouse gases for plants
To reduce production of greenhouse gases
Nitrogen cycle
