Class notes
Lecture notes environmental sciences (geo333)
- Institution
- University Of Venda (UNIVEN)
Lecture notes of 44 pages for the course environmental sciences at UNIVEN (geography)
[Show more]
Seller
Follow
Content preview
TEST DATE FOR MY SECTION - 14 SEPTEMBER 202ASSIGNMENT DUE DATE – 27 August 2023
,RECAP – habitat loss and fragmentation
Tropical forests- sustain traditions, livelihoods & being carbon reservoirs;
logging is a real challenge
Rivers and deltas- provide fresh water & are habitats for marine life
- Are polluted and dammed for electricity and freshwater supply
- Damming impacts genetic material exchange & results in human popula
relocation
Wetlands- are stopovers for migratory birds & offer other ecosystem servic
- Wood harvesting, peat mining
Seasonal drylands- provide various ecosystem services but threatened by
desertification
Leading causes of habitat loss and fragmentation
Human population has led to;
- Agriculture, urban expansion and overutilization are all pausing threats
these ecosystems
- Unsustainable utilization of resources
We need to demonstrate a strong link between conservation and human
welfare to policy makers and politicians
, Water Pollution
• any chemical, biological, or physical change in water
quality that harms living organisms or makes water
unsuitable for desired uses
• occurs when pollutants are discharged directly/indirect
into water bodies without adequate treatment to remov
harmful compounds
• effect is damaging not only to individual species and
populations, but also to the natural biological communi
• natural phenomena such as volcanoes, algae blooms,
storms and earthquakes affect water quality and the
ecological status of water.
• although mostly caused by humans!
, TYPES OF WATER
POLLUTION
– Point source pollution: specific location
(drainpipes, ditches, sewer lines).
– Nonpoint source pollution: cannot be traced to
a single site of discharge (atmospheric deposition,
agricultural/industrial/residential runoff)
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 EFT, credit card or Stuvia-credit 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller mudaumashudu623. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R133,33. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
69605 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 15 years now