Summary
Summary changes in global ecosystems - Wildlife ecology and conservation
- Institution
- Myerscough College
What global changes occur to ecosyetms and why.
[Show more]
Seller
Follow
Content preview
Changes in global ecosystems18/10/2022 13:01
What is an ecosystems - an ecosystem is a geographical area
where living organisms interact with other biotic and abiotic
factors to an area of life.
What is an ecological niche? - The purpose of a living organism
and the role it plays in an ecosystem.
Indicator species - the species that indicates the health of a
habitat
Ecological succession
• The gradual process by which ecosystems change and
develop over times.
• There are 2 types:
○ Primary succession - the series of community
changes which occur on an entirely new habitats
which has never been colonised before.
○ Secondary succession - the series of community
changes which take place for a previously
colonised but disturbed or damaged habitat.
Pioneer species - the species that is the first to colonise a
newly formed habitat.
What could affect a wild population - natural changes
• Drought - an episodic deficit in water availability that
drives ecosystems beyond thresholds of vulnerability.
• Flood - an overflow of water that submerges land that is
usually dry.
• Wild fire - uncontrolled fires that burns in the wild land
vegetation.
• Disease - host pathogen interactions that affect host
individuals, populations , communities and ecosystems.
• Famine - regional failure of food supplies/production or
distribution systems, leads to a sharp increase in
mortality due to starvation.
• Natality - Increase to population size through
reproduction within a period of time.
• Mortality - the number of individuals that die over a
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller frankiewood6. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £4.39. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
52928 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now