Bio 102 Lab Ecology

Front 1

LC50 (lethal concentration 50)

Back 1

One method is to determine what is the concentration pollutants that kills 50% of the indicator organism.

Front 2

Community

Back 2

composed of all populations within a defined area

Front 3

Ecosystem

Back 3

consists of both the community and abiotic components.

Front 4

Biosphere

Back 4

consists of all ecosystems of the whole world where organisms exist

Front 5

Population

Back 5

A group of interbreading individuals of the same species in a defined area.

Front 6

Eutrophication or hypertrophication

Back 6

, is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

Front 7

Percent of energy loss through each transfer

Back 7

90% lost (heat and waste)

Producers 1000kg

Herbivores 100kg

Primary carnivores 10kg

Top carnivores 1kg

Front 8

Source of carbon dioxide in the atmosphere.

Back 8

●Combustion of fossil fuels, ●respiration in plant or animals and ●respiration in decomposers

Front 9

Source of organic compounds in plants

Back 9

The carbon dioxide in the atmosphere.

Front 10

Source of organic compounds in animals

Back 10

Feeding on plants

Front 11

Source of carbon in fossil fuels

Back 11

Fossilized organic material from plants( and animal)

Front 12

Source of carbon in dead organic matter.

Back 12

Death of plant or animal matter

Front 13

Primary secession

Back 13

An ecological secession that occurs following an opening of uninhabited, barren habitat or that occurs on an environment that is devoid of vegitation and usually lacking top soil

Front 14

Climax community

Back 14

is a biological association of flora and fauna which has attained an equilibrium condition. Such a circumstance comes about because this is composed of species best adapted to conditions in that specific locale.

This followed the pioneer species and the intermediate species.

Front 15

Secondary secession

Back 15

The ecological secession that occurs on a preexisting soil after the primary secession has been disrupted or destroyed due to a disturbance that reduced the Population of the initial inhabitants.

Front 16

Species decline

Back 16

Habitat loss

Invasive species

Pollution

Population growth (Human)

Over exploitation of plants/animals