Biogeography Flashcards

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1
Q

Product of analytical clustering of phylogenetic turnover of assemblages of species, including abt 21k species of amphibians, non-pelagic birds, and non-marine mammals worldwide

A

Terrestrial Zoogeographic Regions

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2
Q

Diversity gradients are a way to visualize species abundance in a zoogeographic region. How do you interpret them and what is the usual trend?

A

Brighter regions - higher number of species
Higher biodiversity occurs where bands of wet and warm conditions occur (equator)

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3
Q

The study of variation in species composition and diversity among geographic locations

A

Biogeography

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4
Q

Species that occur nowhere else on earth

A

Endemic Species

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5
Q

Father of phytogeography, studied plant assemblage associated with local climate

A

Alexander von Humboldt

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6
Q

Processes that determine community assemblage

A

Drift, Selection, Speciation, Dispersal

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7
Q

Diversity of entire landscape

A

Gamma diversity

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8
Q

Ratio between alpha and gamma diversities reflecting species turnover

A

Beta diversity

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9
Q

In the Indirect Assessment of Local vs. Regional Influences, a graph of Local (y-axis) vs Regional (x-axis) richness is used. If the slope of the line = 1, what does it mean?

A

All species in the region will be found in the communities of that region

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10
Q

In the Indirect Assessment of Local vs. Regional Influences, a graph of Local (y-axis) vs Regional (x-axis) richness is used. If the slope of the line < 1, what does it mean?

A

Regional processes dominate over local process; Local richness values are less than regional richness

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11
Q

In the Indirect Assessment of Local vs. Regional Influences, a graph of Local (y-axis) vs Regional (x-axis) richness is used. If the line curves or levels with slope < < 1, what does it mean?

A

Local processes limit local richness; Local Richness same, regional richness increases

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12
Q

Area with high endemism levels but also high levels of threatened species and habitat loss

A

Biodiversity hotspot

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13
Q

Separates landmasses and the oceans, as well as brings them together

A

Continental Drift

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14
Q

Mechanism for Continental Drift

A

Plate Tectonics

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15
Q

Main types of boundaries between plates in plate tectonics

A
  1. Mid-ocean ridge
  2. Subduction Zone
  3. Faults
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16
Q

Continuous geographic range rendered discontinuous by the emergence of a barrier

A

Vicariance

17
Q

Explanations for Origins of Regional Diversity Gradients

A
  1. Area - Tropics have larger land area
  2. Isolation - Due to more islands in tropics
  3. Evolutionary History (e.g., Time, Stability)
  4. Productivity - Means higher carrying capacity = more interactions = more speciation
18
Q

This is equal to the Speciation rate - Extinction Rate

A

Diversification Rate

19
Q

Emphasized the balance between species immigration rates and species extinction rates for islands at different sizes and different distances from a source of colonizing species.

A

Equilibrium Theory of Island Biogeography

20
Q

Island setups from least to greatest no of species present

A
  1. Small and Far
  2. Large and Far
  3. Small and Near
  4. Large and Near
    Isipin lang yung carrying capacity and rate/ease of migration