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Power to Detect trends in Ecological Indicators in the East Usambara Mountains, Tanzania

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dc.creator Newmark, William D.
dc.creator Senzota, Ramadhani. B.M
dc.date 2016-09-21T16:16:37Z
dc.date 2016-09-21T16:16:37Z
dc.date 2003-12
dc.date.accessioned 2021-05-03T13:30:12Z
dc.date.available 2021-05-03T13:30:12Z
dc.identifier Newmark, W.D. and Senzota, R.B.M., 2003. Power to detect trends in ecological indicators in the East Usambara Mountains, Tanzania. African Journal of Ecology, 41(4), pp.294-298.
dc.identifier http://hdl.handle.net/20.500.11810/4055
dc.identifier 10.1111/j.1365-2028.2003.00473.x
dc.identifier.uri http://hdl.handle.net/20.500.11810/4055
dc.description Full text can be accessed at http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2028.2003.00473.x/full
dc.description We evaluated the statistical power of monitoring protocols to detect, over a 10-year period, trends in indices of abundance of primates, hornbills and forest interior dung beetles and growth rates of epiphytic ferns in the Amani Nature Reserve, in the East Usambara Mountains, Tanzania. Local technicians are responsible for the day-to-day gathering of data. The existing monitoring protocols for blue monkey, silver-cheeked hornbills, trumpeter hornbills, forest interior dung beetles and Asplenium nidus have sufficient statistical power (>0.80) to detect trends of 65% or less over a 10-year period. Monitoring protocols for black and white colobus and Asplenium holstii have lower statistical power (<0.80). We therefore conclude that the majority of monitoring protocols of the East Usambara Ecological Monitoring Project have the capacity both logistically and statistically to detect long-term trends in important functional groups in the East Usambara Mountains.
dc.language en
dc.title Power to Detect trends in Ecological Indicators in the East Usambara Mountains, Tanzania
dc.type Journal Article


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