13337794
Description
Flashcards by Sophie Byrne, updated more than 1 year ago
|
Created by Sophie Byrne
over 8 years ago
|
|
| Question | Answer |
| What is biogeography? | The relationship between geographic distance/ecogeographic characteristics and biodiversity. All species differ in ability to adapt to ecogeographic characteristics |
| From which principles interacting in a non-random manner do biogeographic patterns arise? | Immigration Extinction Evolution |
| What are Brown and Lomolino's Five tenets (1998)? | - Climate and taxonomic similarity are correlated - Present biota strongly influenced by geological and climatic history - Competition, predation, etc have a determining role in biota distrib, dispersal, and extinction - If 2 land masses unite, it will result in extinction due to new competition - To understand biota distrib. w/in a region, we must study biota distrib. outside this region and their close relatives |
| What are Alfred Russell Wallace's world bioregions? | - Wallace line (b/w Australian and SE Asian fauna and flora) - Bali and Lombok (35km apart) |
| What is the Arrhenius relationship, and what does each letter stand for? | LogS = c + zlogA S = no of species A = area c and z are constants |
| What main abiotic factors are organisms' distribution determined by? | - Sunlight - Temp (most important) - Water All dependent on solar radiation in some way |
| How much solar energy is received by the earth? | 170,000TW |
| Name 3 causes of speciation | - Abiotic-biotic heterogeneity - Continuous population move to disjunct populations - Cosmopolitan species vs restricted species |
| Give 3 problems with hotspots | - Indicator taxa: are plants appropriate indicators for areas of species richness and endemism? - Complementarity: do areas of endemism and richness for diff taxa coincide? - Sustainability: Can species diversity be maintained in highly threatened habitats? |
Want to create your own Flashcards for free with GoConqr? Learn more.