CHAPTER 6 : BIODIVERSITY AND CONSERVATION OF RESOURCES Flashcards
___ is the variation among living organisms from different ecosystems, and the ecological complexes of which they are a part.
It describes the richness and variety of life on earth.
Biodiversity
Greatest biodiversity is found in in the ___ , particularly among tropical forest and coral reefs.
tropical regions
who coined the term biodiversity in 1985
Walter G. Rosen
Levels of Biodiversity:
▪ Ecosystem Diversity
▪ Species Diversity
▪ Genetic Diversity
Refers to the variations among the genetic resources of the organisms.
Genetic diversity
Every individual of a particular species differs from each other in their ___
genetic constitution
___ permits populations to adapt to changing environments and continue to participate in life’s processes.
Genetic variation
•Refers to the variety of different types of species found in a particular area.
•Simply the number and relative abundance of species found in each biological
organization.
Species Diversity
Three qualities of Species Diversity
Species Richness
Species Dominance
Species Evenness
Total number of species
Species Richness
The most abundant species
Species Dominance
The most abundant species
Species Dominance
Relative abundance of species
Species Evenness
Species Evenness is equal to
Number of certain species
————————————- × 100
Total number of all species
___ is defined by the species that occupy a particular area and the interaction between those species.
Biological community
A biological community together with its associated physical environment is termed an ___
Ecosystem
•The variety of different habitats, communities and ecological processes (Gorsuch, n.d.).
•Coined as the “largest scale of biodiversity”.
Ecosystem Diversity
Benefits of Biodiversity
✓Provides food and medicine
✓ Aids ecosystem stability
✓ Aesthetic and existence values
What threatens Biodiversity ?
extinction
HIPPO as Human Impacts
H – habitat destruction
I – invasive species
P - pollution
P – population of humans
O - overharvesting
Ecologists proposed a 34 hot spots that are high priority of conservation because they have both high in biodiversity as well as a high risk of disruption by human activities.
Biodiversity Hot Spots
which includes several endemic species and a high number of threatened or endangered
species
Regions that has a high concentration of species diversity
Hottest hot spots tend to be tropical islands such as
Madagascar, Indonesia and Philippines
“The Story of Stuff” by
Annie Leonard