Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    10
    ReputationRep:
    Hiya! I'm currently writing an A2 Biology synoptic essay,and the title is "How do humans affect populations of other organisms".

    As it's quite a geography-related question I'm finding it really tricky to write and was wondering if anyone had an essay plan for it? Thanks!
    Offline

    16
    ReputationRep:
    Hi

    I would say it's more of an ecology related question than geography, so I would think about how human landscape use could affect different wildlife populations, for example:

    Farming: will affect the plants able to grow in an area. Run-off from pesticides/herbicides/fertilisers may also cause issues in rivers/streams nearby. If hedgerows are removed, this will reduce the habitat available for small mammals, birds and insects. Large grazing animals (e.g. cows and sheep) will also change the plants present in an area, and this may cause other animals (especially small mammals) to lose important food sources. Pesticides may also affect insect populations. Conversely, if flowering plants are planted, these may be beneficial for insects such as bees.

    Urban areas: Concreting over areas reduces the available space for lots of plant and animal species. This can also increase flooding, which might be a problem for some species. Pets, especially cats, are a major problem because they will often kill/disturb nesting birds, which may mean they can't reproduce successfully (people might also do this). However, some people also deliberately feed wildlife, which can increase survival rates over winter, and some animals, e.g. house mice, have adapted to live in urban environments.

    You could also mention things like invasive species being introduced to the environment by humans- these can have a devastating effect on native wildlife populations.

    I hope this gives you some ideas.
    • Thread Starter
    Offline

    10
    ReputationRep:
    (Original post by SlowlorisIncognito)
    Hi

    I would say it's more of an ecology related question than geography, so I would think about how human landscape use could affect different wildlife populations, for example:

    Farming: will affect the plants able to grow in an area. Run-off from pesticides/herbicides/fertilisers may also cause issues in rivers/streams nearby. If hedgerows are removed, this will reduce the habitat available for small mammals, birds and insects. Large grazing animals (e.g. cows and sheep) will also change the plants present in an area, and this may cause other animals (especially small mammals) to lose important food sources. Pesticides may also affect insect populations. Conversely, if flowering plants are planted, these may be beneficial for insects such as bees.

    Urban areas: Concreting over areas reduces the available space for lots of plant and animal species. This can also increase flooding, which might be a problem for some species. Pets, especially cats, are a major problem because they will often kill/disturb nesting birds, which may mean they can't reproduce successfully (people might also do this). However, some people also deliberately feed wildlife, which can increase survival rates over winter, and some animals, e.g. house mice, have adapted to live in urban environments.

    You could also mention things like invasive species being introduced to the environment by humans- these can have a devastating effect on native wildlife populations.

    I hope this gives you some ideas.
    This is brilliant, thank you so much
    Offline

    16
    ReputationRep:
    (Original post by Peaches and Cream)
    This is brilliant, thank you so much
    Glad you found it helpful
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.