Taxonomy & Ecology

Binomial nomenclature

Carolus Linnaeus developed binomial nomenclature
In his system, he gave each organism a two part scientific name
For example the scientific name of a house cat is Felis domesticus
Species name is usually Latin

we have 5 kingdoms

monera ,proista, fungi, platae animalia

Ecology

study of the interactions of organisms with one another and with their physical surroundings

the earth is referred to as a biosphere

ecosystems

an ecosystem consist of abiotic and biotic factors . (non living and living)

organisms living together in an ecosystem are referred to as a community

Ecological succession

process of gradual change when organisms colonize a habitat

two types primary and secondary

primary succession

occurs in an area where there is no soil.

the first species to survive and reproduce is called an pioneer species

they make up the environment and allow organsims to live there

spores of lechen is carried by wind , combined with the weathering of rock, they help form soil

as more niches are made , there is diversity in organisms and bigger food webs

secondary succession

occurs after a big disturbance , natural disaster in an area that had living organisms

conferous trees form in nothern latitudes

deciduous forest from temperate zones

tropical forest form in tropical zones

climax\mature community is final stage

stable group of two or more species is able to survive and reproduce in an habitat

when a species is able to come back to an community after being disturbed, is called ecological habillity

natural events effect an ecosystem

drought occures when an area gets a low amoount of rainfall in a long period of time

this can destroy habitats and kill organisms.

insect infestations

Food webs
Many animals are part of more then one food chain and eat more than one kind of food
Interconnected food chains are called food webs

Food chains
Models that shows the flow of energy from plant to animal and from animal to animal
Each step in the food chain is called a trophic level and each trophic levels show the feeding between organisms

Ecological pyramids
There are several types of ecological pyramids like bio mass , numbers and energy

Biomass is the total amount of life in a given area .