module 4.1 Flashcards
what is a population?
-a group of individuals of the same species that can mate
-a group of individuals of the same species that is spatially distinct from other groups of individuals of the same species
-groups where processes of births and deaths are generally more important than immigration or emigration in driving population trend
what is a conceptual model of population growth?
how do we obtain population data?
it helps first to assign population count to a particular time frame (helps if matches reproduction cycles)
-can also count subsample of all individuals and extrapolate from that the whole population
-aerial photography
-drone-based surveying
-thermal imagery to detect wildlife
-capture-mark-recapture
what is the TK-7 sensor from overwatch imaging, hood rover, oregon?
-originally designed to detect fire hotspots
-high resolution camera with colour and thermal (LWIR)
-obtains imagery in strips by piecing together photographs of co-boresignted colour and thermal sensors
what is capture-mark-recapture?
capture, tagging individuals then re-capturing
-N=whole population
-M=marked
-n= second captures
-m=marked and recaptured
what is discrete-time population growth?
-the geometric growth equation, also known as the finite rate of population increase, (delta), is obtained from the ratio of population size in year t+1 (N+1) to population size in a year t(Nt)
what is a mathematical model for discrete-time population growth?
what is a visually representation of population growth through time example?
what is a visually representation of population growth through time?
how to use data to inform population models (a test drive)?
equations?
