The minimum viable size of these things can be defined by the inequality P-hat root H is greater than or equal to three. The incidence function model of these things was developed by Ilkka Hanski. Their dynamics can be modeled with sources of positive growth rate and sinks of negative growth rate, reflecting suitability. Their persistence is affected by connectivity between (*) patches, which is a major focus of conservation biology in the form of corridors. Hanski incorporated the "rescue effect" into Richard Levins model of these things, in which they are conceived as a simple stochastic balance between local extinction and colonization of suitable habitat patches. For 10 points, identify 
The minimum viable size of these things can be defined by the inequality P-hat root H is greater than or equal to three. The incidence function model of these things was developed by Ilkka Hanski. Their dynamics can be modeled with sources of positive growth rate and sinks of negative growth rate, reflecting suitability. Their persistence is affected by connectivity between (*) patches, which is a major focus of conservation biology in the form of corridors. Hanski incorporated the "rescue effect" into Richard Levins model of these things, in which they are conceived as a simple stochastic balance between local extinction and colonization of suitable habitat patches. For 10 points, identify this term applied to spatially isolated assemblages of organisms that are linked by migration and extinction.
The minimum viable size of these things can be defined by the inequality P-hat root H is greater than or equal to three.
metapopulations [prompt on: "populations", "metacommunities"]