Biodiversity Implication Flashcards
What does species richness mean?
Number of given species in an area
What does species richness give us a sense of?
Biodiversity in an area
What does species evenness mean?
Proportion of individuals within a different species in a given area
What does species evenness tell us?
If a certain species in more prominent that others in an area.
What increases when there is a high genetic biodiversity?
Increased likelihood that a population will better respond when exposed to a disease
Is it more or less likely that some species would carry genes that allow them to survive disease in an area with high genetic diversity?
More likely
Does high genetic diversity make variety with agriculture?
Yes; it provides options in case of crop disease and improves quality of life
What increases when there is a low genetic diversity?
Increased likelihood that a population will decline when exposed to disease
Does low genetic diversity cut into agricultural production?
Yes; could lead to loss or extinction of crops, hunger, & lower quality of life
What does a high habitat biodiversity provide?
An increase in number of generalist & specialist species
Do generalist or specialist species adapt well in high habitat biodiversity implications?
Generalists
What can low habitat biodiversity result in?
A decrease in number of generalist & specialist species
What will happen to specialist and generalist species if low habitat diversity continues?
Specialist species will be effected first at a slow rate then if low habitat diversity continues, generalists will be effected
What does high species biodiversity increase?
Productivity & resilience to disease, stability
What is species biodiversity also critical to?
Environmental indicator
What does low species biodiversity decrease?
Productivity & resilience to disease, stability, and potential decrease in the overall health of an environment
What can low species biodiversity lower?
Species richness and species evenness
Approximately how many species have been identified on Earth?
2 million
How many new species are discovered each year?
15,000 to 18,000
How may species do scientists think live on Earth?
A range of 5 to 100 million; scientist believe it’s closer to 10 million though
What does being a threatened species mean?
The population is lowering and needs to be monitored
What does being an endangered species mean
The population is lowering to dangerous levels, could go extinct.
What does it mean to be an extinct species?
The population is gone from existence
What does it mean to have a mass extinction?
A species is gone in a short time period
What does a background extinction mean?
There is an ongoing loss of species due to natural factors
