Comparison of aerial counts with ground counts for large African herbivores

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Subfields: Ecology

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REVIEW: The management of wild large herbivores to meet economic, conservation and environmental objectives (2004, methodology): “Costly aerial surveys (Jolly 1969; du Toit 2002; Jachmann 2002) are inappropriate in this context but low-cost methods could be employed, such as dung surveys (Laing et al .”
How do you find the green sheep? A critical review of the use of remotely sensed imagery to detect and count animals (2018, background): “Environmental homogenity, body size and the ability to differentiate individuals from their background all affect accuracy (Jachmann, 2002; Terletzky & Ramsey, 2014).”
Evaluating relative abundance indices for terrestrial herbivores from large-scale camera trap surveys (2018, background): “However, these types of surveys are implemented infrequently (once every year or few years) and at coarse spatial scales due to substantial associated expenses (Jachmann, 2001, 2002 ; Wilson, Cole, Nichols, Rudran, & Foster, 1996).”
Indicators of ecological change: new tools for managing populations of large herbivores (2007, background): “Hence, counts of the whole population or sample plots using aerial censuses in open areas (e.g. Jachmann 2002) and drive censuses or other hunting-related methods in closed areas (e.g. Dzieciolowski et al .”