Fin Flashcards
It is the scientific study of
interactions of organisms
with their environment.
Ecology
Factors affecting Life’s
Distribution in Earth
Biotic Factors & Abiotic factors
are the
environment’s non-living concept
Abiotic factors
What are the Abiotic factors
- Elevational Gradient
- Latitudinal Gradient
- Precipitation Gradient
- Temperature Gradient
- Sunlight Distribution*
is the living
components of the environment.
Biotic Factors
Factors affecting Biotic
Distribution:
- Dispersal Capability
- Biotic Interactions (e.g., predation,
herbivory, competition)
Types of Dispersion
Uniform dispersion - . . . . .
Random dispersion - . … .. . . . …
Clumped dispersion - … … … ….
Levels of Ecological Study
Organismal Ecology
Community Ecology
Population Ecology
Ecosystem Ecology
is a field of study that investigates species
adaptations and how these adaptations help them to survive in their
environment
Organismal Ecology
studies on the dynamics and factors
affecting populations in a given area
and time.
Population Ecology
is a group of interbreeding
organisms that are member of same
species living in the same area at the
same tim
Population
it is the
changes of population in terms of size
and density at a given time.
Population Dynamics
produce offspring in
series of separate
reproductive events
Iteroparous populations
produce all offspring in
single reproductive event
Semelparous populations
A biological community consists of
the different species within an
area, typically a three-
dimensional space, and the
interactions within and among
these species.
Community Ecology
They are
interested in the processes driving
these interactions and their
consequences
Community ecologists
is an assemblage of
living and non-living elements
within a boundary that forms
functional relationships, maintains
flow of energy and complete the
chemical cycle
Ecosystem
examines large-scale ecological
issues, ones that often are framed
in terms not of species but rather of
measures such as biomass, energy
flow, and nutrient cycling
Ecosystem Ecology
Components of Ecosystem
Heterotrophs
Autotrophs
Heterotrophic
Autotrophic
Components of Ecosystem ( according to structure)
Consumers
Producers
Types of consumers
Primary consumer
Secondary consumer
Tertiary consumer and higher level consumer
are herbivores
(plant-eaters) which feed directly and
only on all or part of living plants
Primary consumer
are primary
carnivores (meat-eaters), which feed
only on plant-eating animals
Secondary consumer
include large carnivores or omnivores
(plant- and meat-eaters) that feed on
primary and secondary consumers
and/or producers.
Tertiary and higher-level consumers
Heterotrophs that feed on detritus, or dead organic plant and
animal matter
detritivores.
Two major classes of detritivores
Detritus feeder
Decomposers
ingest fragments of dead organisms
and their cast-off parts and organic wastes
Detritus feeders
absorb and endocytose the soluble
nutrients at the cellular level (e.g. bacteria and fungi)
Decomposers
Properties of Ecosystem
Sustainability
Productivity
Stability
Diversity
Equitability
the amount of energy
formed, or rate of production or organic
matter produced that is expressed in:
number or mass per unit area per unit
period of time (i.e. no./kg./ha./yr.).
Productivity
is the rate at which
radiant energy is stored by photosynthetic
activity of the plants.
Primary productivity
is the
total rate of photosynthesis.
Gross primary productivity (GP)
is the rate of
storage in plant tissue after excess of
energy utilization from respiration.
Net primary productivity (NP)
the ability of an
ecosystem to return to equilibrium
following minor external forces or
disturbances such as increase in
temperature, changes in the rainfall
patterns, and soil and water losses.
Stability
the ability of an
ecosystem to return to equilibrium
following major external forces or
disturbances such as long periods
of drought, acidification of soil, salt
intrusion, typhoons, and pest
infestation.
Sustainability
refers to the number,
kinds and variability of species in
an ecosystem. This that more
species have higher biological
diversity, higher stability and higher
sustainability.
Diversity
refers to the benefits
of ecosystem that is distributed
among its beneficiaries, such that
more member organisms have
access to the available resources
means the higher equitability of the
resources to the organisms.
Equitability
Properties of Ecosystem: Based on the Components of Biodiversity
Genetic Diversity
Species Diversity
Ecosystems Diversity
is the total
number of genetic characteristics in
the genetic makeup of a species.
Genetic Diversity
refers to the
number of species in an area.
Species Diversity
the variety of
different habitats, communities and
ecological processes
Ecosystems Diversity
consists of all the populations
of all the different species that live together in a particular
area.
ecological community
Interactions between different species in a
community
interspecific interactions
Different types of interspecific interactions
competition
predation
parasitism
herbivory
Symbiosis
2 types of symbiotic relationship
commensalism
mutualism
Organisms of two species use the
same limited resource and have a negative impact on
each other.
competition
(+/-):A member of one species, predator,
eats all or part of the body of a member of another
species, prey.
predation
(+/-):A long-term, close association
between two species in which one benefits, and the
other is harmed
parasitism
+/-): A special case of predation in which
the prey species is a plant.
herbivory
two species live together in a
long-term, intimate association. In
layman’s term, a relationship that benefits
both parties it include close, lasting relationships with a
variety of positive or negative effects on
the participants.
Symbiosis
(+/+):A long-term, close
association between two species in which
both partners benefit
mutualism,
(+/0): A long-term, close
association between two species in which
one benefits, and the other is unaffected
commensalism
consist of many
interconnected food chains and are more
realistic representation of consumption
relationships in ecosystems.
Food web/s
Biomes are divided into two which are:
Aquatic and Terrestrial