Lectures - Metapopulations

4 important questions on Lectures - Metapopulations

How is nitrogen lost to the environment?

  1. Leaching of nitrate (NO3 −)
  2. Volatilisation (NH4 + → NH3 (g))
  3. Denitrification (NO3 − → N2O (g) and N2 (g))

What are the consequences of habitat fragmentation for interior- and edge habitat species?

Qq.

What are ceveats of the island theory?

  1. The equilibrium assumption is difficult to justify in changing landscapes
  2. Does not consider important factors: 
    • Heterogeneity
    • Disturbances
    • Landscape matrix
  1. Treats species as identical
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What are the conditions for classic metapopulations?

  1. Suitable habitat present as a collection of discrete patches
  2. Dynamics of colonization and extinction
  3. Large populations can also go extinct
  4. Dynamics of populations are asynchronous

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