Nova Mieszkowska, Gregg Milligan, Michael T. Burrows, Rob Freckleton and Matthew Spencer Dynamic species distribution models from categorical survey data Journal of Animal Ecology 82
In order to understand population dynamics, data from many locations at multiple time points are needed. It can be very expensive and time-consuming to get precise estimates of abundance at such large scales. Instead, categorical abundance estimates (with categories such as “not seen”, “rare”, “occasional”, ...) are often used. Here, the authors describe ways of extracting approximate information on long-term population dynamics from data of this kind.
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