NEM 10V Lecture Notes - Lecture 8: Nematology, Hydrosphere, Geosphere
Nematology
Part 2 Biodiversity:
• Biodiversity is cataloging all of the species in an ecosystem and their interactions
with the aim of understanding their evolutionary and genetic history
• how best to preserve and manage ecosystems.
• Values are:
-economic value
-ecological life support
-cultural value
-recreational value
-scientific value
- negative value.
• Deforestation-practice cutting down forests
-Common in Brazil, Indonesia, Mexico, Papua New Guinea, and Russia.
• Reasons for deforestation:
-industrial uses
-promote agriculture
-clearing land for livestock
• Affects environment:
-Trees absorb carbon dioxide. As human beings put more carbon dioxide into the
atmosphere while at the same time cutting down more trees, the ability of the planet
to balance how much carbon is in the atmosphere is disrupted
• Biodiversity is the foundation of ecosystem services to which human well-being is
intimately linked. No feature of Earth is more complex, dynamic, and varied than the
layer of living organisms that occupy its surfaces and its seas, and no feature is
experiencing more dramatic change at the hands of humans than this extraordinary,
singularly unique feature of Earth. This layer of living organisms—the biosphere—
find more resources at oneclass.com
find more resources at oneclass.com
