Download Diversity and Evolution

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Ecological fitting wikipedia, lookup

Molecular ecology wikipedia, lookup

Overexploitation wikipedia, lookup

Island restoration wikipedia, lookup

Allometry wikipedia, lookup

Storage effect wikipedia, lookup

Biodiversity action plan wikipedia, lookup

Animal genetic resources for food and agriculture wikipedia, lookup

Soundscape ecology wikipedia, lookup

Source–sink dynamics wikipedia, lookup

Renewable resource wikipedia, lookup

Biogeography wikipedia, lookup

Ecosystem services wikipedia, lookup

Restoration ecology wikipedia, lookup

Biodiversity wikipedia, lookup

Biological Dynamics of Forest Fragments Project wikipedia, lookup

Reconciliation ecology wikipedia, lookup

Latitudinal gradients in species diversity wikipedia, lookup

Ecology wikipedia, lookup

Ecosystem wikipedia, lookup

Habitat destruction wikipedia, lookup

Theoretical ecology wikipedia, lookup

History of wildlife tracking technology wikipedia, lookup

Habitat conservation wikipedia, lookup

Natural environment wikipedia, lookup

Habitat wikipedia, lookup

Transcript
Diversity
Galapagos Islands
Galapagos Islands
Located about 600 miles west of Ecuador
 Consists of 13 volcanic islands and
numerous islets and rocks
 Discovered by accident in 1535
 First scientific study done in 1835 by
Charles Darwin while aboard the HMS
Beagle

Galapago’s Finches
Diversity of Beak Forms

Beak form and
function are related to
survivial
Natural Selection
Organisms with characteristics suited to
their environment will survive and produce
the most offspring
 “Survival of the fittest”
 Adaptations will be passed to future
generations

Niches
Role of an organism in an ecosystem
 Includes resources utilized, relationships,
and activities the organism engages
 Each species has its own niche

Terminology
Ecosystem – all living organisms in a given
area and their interactions with their
environment
 Species – a group of organisms that is
able to breed freely and produce viable
offspring

Bird’s Feet
Diversity of Beak Forms
Diversity of Beak Forms
Diversity of Beak Forms
Habitat Requirements

What do you need to survive?
Habitat Requirements
Food
 Water
 Shelter
 Space

Biotic Potential
Limiting Factors
Interspecies competition
 Intraspecies competition
 Disease
 Predation
 Disasters
 Balance other factors such as birth rate,
early reproductive age.
 Effect is to increase death rate
 Produces S-curve

S Shaped Curve
Carrying Capacity
Number of individuals an
ecosystem can support
indefinitely.
Resources are not used faster
than they are replaced!
Human Interference
Increase available food sources
 Decrease available space
 Elimination of predators
