Ecosystem Part 2 (General Principles in Ecology) Flashcards
is a community of different living organisms in conjunction with the nonliving components of their environment, interacting as a system.
Ecosystem
It is a collection of all organisms that live in a
particular place together
with their nonliving
environment.
Ecosystem
Ecosystem has two types:
❑ Natural Ecosystem
❑ Artificial Ecosystem
Natural Ecosystem can take in several forms:
❑ Terrestrial Ecosystem – land-based ecosystems
❑ Aquatic Ecosystem – ecosystems in body of water
the living component of an ecosystem.
Biotic Factors
are the non-living component of an ecosystem.
Abiotic Factors
Climatic Factors:
Rain
Light
Wind
Temperature
Edaphic Factors:
Soil
pH
Minerals
Topography
Biotic Components kinds:
Producers (Autotrophs)
Consumers (Heterotrophs)
Decomposers (Saprotrophs)
Consumers (Heterotrophs) kinds:
Primary
Secondary
Tertiary
Quartenary
Is the relative position of an entity in the food chain.
Trophic level
▪It forms the feeding positions in a food web or chain.
Trophic level
All food webs and chains have
at least two or three trophic
levels.
Trophic level
The Autotrophs
Auto (means “________”) + trophḗ (aGreek word, meaning “_____”/“_______”/”_______”).
“self”
“food”
“nourishment”
”nutrition”
Members of this tropic level are capable of producing their own food source.
The Autotrophs
They acts as the food producers in a food chain.
The Autotrophs
Give some examples of autotrophs:
Plants
Algae
Cyanobacteria
Phytoplanktons
Hetero-(means “_______”) + trophe (aGreek word, meaning “________”/“_____”/”____”).
“others”
“food”/“nourishment”/”nutrition”
Organisms’ member of this tropic level depends on the producers for nourishment.
The Heterotrophs
They acts as the consumers in a food chain.
The Heterotrophs
Classification of
heterotrophs based on diets:
❖ Herbivore
❖ Carnivore
❖ Omnivore
❖ Microbivores
❖ Detritivores
Microorganisms, including detritivores, feed on decomposing materials to break down its components into simpler molecules.
The Decomposers: Special Heterotrophs
❑ Shows a series of transfer of energy (food)
❑ Involves the organisms in different trophic levels in transferring energy.
❑ “Who eats what”
❑ Food web: Interconnecting food chains
Food Chain
process of eating and being eaten
Food Chain:
consists of all the food chains in a single ecosystem.
Food Web
▪Each living thing in an
ecosystem is part of multiple
food chains.
Food Web
is one possiblepath that energy and nutrients may take as they move through the ecosystem.
Food Web
depicts how energy and biomass decrease from lower to higher trophic levels.
Ecological Pyramid
❑Symbiosis (from Greek συμβίωσις, symbíōsis, _________, from
σύν, sýn, “together”, and βίωσις, bíōsis, _____) is any type of a closeand long-term biological interaction between two different biological organisms.
Symbiotic Relationships
can be obligatory, which means that one or more of the symbionts depend on each other for survival, or facultative (optional), when they can generally live independently.
Symbiosis
is also classified by physical attachment
Symbiosis