Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Ecological Components of Biodiversity & Global Biodiversity

Lecture on ecology of biodiversity

Jennifer Dever

on 3 April 2017

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Ecological Components of Biodiversity & Global Biodiversity

Ecological Components of Biodiversity & Global Biodiversity Patterns
Ecosystems & Communities
"Civilization is a state of mutual interdependent cooperation between human animals, other animals, plants, and soils, which may be disrupted at any moment by the failure of any of them" - Leopold
Global patterns of biodiversity
Habitat Heterogeneity
major types of ecosystems that occupy broad geographic regions, impacted by climate, geology & geography
Future of Biodiversity Studies
cataloging the millions of species left undescribed
zero in on areas with high richness & endemism (RAP) rapid assessment program
establish research stations in hotspots
Ecology Review
Ecosystems = all the organisms in a given area as well as the abiotic factors with which they interact.
Community = All of the organisms that inhabit a particular area; an assemblage of populations of different species living close enough for potential interaction.
Ecologically functional species = when the population of a species is large enough to have an impact on other species in the community.
Trophic structure = different feeding relationships in an ecosystem, which determine the route of energy flow and the pattern of chemical cycling in an ecosystem
Niche = specific role that a species plays in the community.

Gross productivity = amt of energy trapped in organic matter during a specified interval at a given trophic level
Productivity is higher in more diverse natural communities - because differences among species in resource capture allows more diverse communities to more fully utilize their limiting resources
Functionality - Ecosystem processes, e.g. soil development, nutrient cycling, water filtration and storage
Healthy Ecosystem = one in which the processes are functioning normally.
Stable Ecosystem = one that is able to remain in the same state; Resistance = able to maintain the same state in the midst of disturbance; Resilience = property of being able to return to the original state quickly after disturbance.
Ecosystem Dynamics
Measuring Biodiversity
S = Species Richness
E = Evenness
Diversity Index
alpha diversity = local species richness
beta diversity = measure of variation among sites within a region
gamma diversity = regional richness
Biodiversity Hotspots - 25 biologically rich areas around the world that supports nearly 60% of the world's plant, bird, mammal, reptile, and amphibian species.
Full transcript