Global Ecology And Conservation Biology

Question 1

How many species have we named

Answer 1

Close to two million. A little less

Question 2

Extinction is

Answer 2

Occurs constantly in the background but we are now seeing a drastic increase in the rate of extinction

Human caused

Question 3

Destroying rainforest does what to species

Answer 3

Eliminates them and often they are often species we don’t even know exist and could be beneficial for antibiotics and medication.

Question 4

What the two components of biodiversity

Answer 4

Relative Abundance of species- how many individuals of each species there are

and species richness how many species there are

Question 5

Genetic diversity

Answer 5

Is within a population

A source of variation that enables them( population) to adapt to environmental changes

Question 6

Ecosystem diversity

Answer 6

How many different kinds of ecosystems there are. Important for the biosphere especially for the global cycles

Question 7

Extinction by humans have cause what species examples to die

Answer 7

Philippine eagle

River dolphins that are unintentional

Question 8

4 major threats to biodiversity are

Answer 8

Habitat loss- eviction or deforestation orFragmentation

Introduced species- unintentional or intentional and caused other species to be driven out

Over-harvesting- example is poaching of elephants for their tusks,

Question 9

Fragmentation

Answer 9

Taking one large ecological island and making into smaller ones which reduces biodiversity and puts stress on natural populations

Question 10

Extinction vortex

Answer 10

The point where a small population that’s sensitive to interbreeding and genetic drift

Question 11

Ecological edge

Answer 11

Where one island ends and something else occurs. Doesn’t ha e to be water but can

Question 12

Edge adapted species

Answer 12

Species that do well at the edge and there are species that only do well in the interior of the island

Human fragmentation makes more and more edges and put pressure on interior island adapted species

Question 13

Biodiversity hotspots

Answer 13

Great biodiversity and that are in trouble

The will to rescue everything is impossible so money and energy must be put into the hotspots because they have the most and will lose the most if not helped

Question 14

Minimum viable population

Answer 14

Population you don’t want to go below or extinction vortex will happen.