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    G10 Unit3 Module4 Ecosystem-Biodiversity

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    Ivanne Carig
    Biodiversity describes the variety of living things in an area. Organisms are part of biodiversity and may have economic and ecological value through their products. The value of species can be divided into direct economic value if their products are useful, indirect economic value if they provide benefits without being used, and aesthetic value if they provide enjoyment or beauty. Ecosystem stability depends on biodiversity and can withstand changes through the resilience of its species.

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    G10 Unit3 Module4 Ecosystem-Biodiversity

    Uploaded by

    Ivanne Carig
    994 views22 pages
    Biodiversity describes the variety of living things in an area. Organisms are part of biodiversity and may have economic and ecological value through their products. The value of species can be divided into direct economic value if their products are useful, indirect economic value if they provide benefits without being used, and aesthetic value if they provide enjoyment or beauty. Ecosystem stability depends on biodiversity and can withstand changes through the resilience of its species.

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    Biodiversity describes the variety of living things in an area. Organisms are part of biodiversity and may have economic and ecological value through their products. The value of species can be divided into direct economic value if their products are useful, indirect economic value if they provide benefits without being used, and aesthetic value if they provide enjoyment or beauty. Ecosystem stability depends on biodiversity and can withstand changes through the resilience of its species.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    994 views22 pages

    G10 Unit3 Module4 Ecosystem-Biodiversity

    Uploaded by

    Ivanne Carig
    Biodiversity describes the variety of living things in an area. Organisms are part of biodiversity and may have economic and ecological value through their products. The value of species can be divided into direct economic value if their products are useful, indirect economic value if they provide benefits without being used, and aesthetic value if they provide enjoyment or beauty. Ecosystem stability depends on biodiversity and can withstand changes through the resilience of its species.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 22

    Module 4: ECOSYSTEM: Biodiversity

    Biodiversity
    is a term that describes how
    varies living things are in a
    specific area.
    Organisms are part of
    biodiversity and may be
    economically and ecologically
    valuable. Their products are
    value of species can be divided into
    various categories
    1. Direct economic value
    The species is considered to
    have direct economic value if
    their products
    are sources of food, medicine,
    clothing, shelter, and energy.
    2. Indirect economic value
    A species has an indirect
    economic value if there are
    benefits produced
    by the organism without using
    them.
    3. Aesthetic value
    A lot of species provides
    visual or artistic enjoyment,
    like a forested
    landscape and the calming
    beauty of a natural park; or
    they may be
    Stability of an ecosystem can be
    described as the resilience to
    withstand changes that may
    occur in the environment. There
    are many changes that occur in
    the environment which may be
    a result of natural or human
    activities. These changes may
    The Ups and Downs of Population
    Growth
    A population is a
    group of organisms
    of the same
    species that live in
    a certain area.
    why a population increases
    or decreases?
    The number of births in a
    population is called the birth
    rate (natality).
    The number of organisms
    that are dying in a population
    is called the death rate
    (mortality).
    if the birth rate is greater
    than the death rate, a
    population will grow. If the
    death rate is greater than
    the birth rate, then the
    population will decrease.
    A population’s
    growth is limited by two general
    factors:
    Population density
    refers to the number of
    organisms per unit area. If a
    population’s density is very high,
    that means there are a lot of
    organisms crowded into a
    certain area. If a population’s
    density is low, that
    Density-independent limiting
    factors that can stop a
    population from
    growing can be such things
    as natural disasters,
    temperature, sunlight, and
    the activities of humans in the
    environment.
    Density-dependent limiting
    factors come into play when a
    population
    reaches a certain number of
    organisms. For example, when a
    population reaches a certain
    size, there won’t be enough
    resources (food, shelter, water)
    population’s carrying
    capacity
    when population
    reaches the maximum
    number of organisms that
    can be supported, or
    Before a population
    reaches its carrying
    capacity, it experiences a
    period of rapid growth.
    This period of growth is
    called exponential
    Limiting Factors that depend on
    population density
    1. Diseases and parasites –
    Infectious diseases and
    parasites spread faster in
    densely populated areas.
    2. Competition for resources
    3. Predation

    4. Emigration
    Environmental Problems and Issues
    Problem 1. Farmlands are
    converted into housing projects

    Problem 2. River ecosystem


    dumped with garbage from
    illegal settlers
    and toxic wastes from industries.

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