Re: African Wild Dog
Posted: Sun Jun 28, 2020 6:28 pm
The management of the metapopulation is a lot of effort and very expensive and the national population does not increase despite more reserves holding wild dogs 
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African Wild Dog
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Re: African Wild Dog
Posted: Sun Jun 28, 2020 6:37 pm
If a disease occurs, it is better if they are not all at the same location.
Re: African Wild Dog
Posted: Mon Jun 29, 2020 9:36 am
I wonder how they count them in Kruger? The 1995 census was using tourist photos and 100% reliable. 
Re: African Wild Dog
Posted: Mon Jun 29, 2020 11:25 am
Tourist photos? 
Cannot be very precise when it comes to numbers.
Cannot be very precise when it comes to numbers.Re: African Wild Dog
Posted: Mon Jun 29, 2020 11:58 am
I'll find the articles somewhere, tourists sent pics for a year, to EWT I think? The markings are unique and they built up a brilliant database, including dogs roaming outside Kruger. 
Re: African Wild Dog
Posted: Mon Jun 29, 2020 12:18 pm
I remember the EWT asking for info, but you cannot expect that all the wild dog groups have been photographed. There must be some that never get close to a road or groups photographed twice, but not showing the same animals 
Re: African Wild Dog
Posted: Mon Jun 29, 2020 5:06 pm
No, I think they travel so much tourists will see them eventually over a year!
Re: African Wild Dog
Posted: Mon Jun 29, 2020 6:52 pm
Maybe
Re: African Wild Dog
Posted: Mon Jun 29, 2020 7:07 pm
Kruger subpopulation
Photographic surveys of wild dogs were conducted in Kruger in 1995, 2000, 2005, 2009 and
2014 (cf. Maddock & Mills, 1994). We used these
surveys to provide a minimum count of individuals
based on the identification of unique coat patterns
(Maddock & Mills, 1994). Thus, population estimates were available for census years. For years
between censuses, we used linear regression to
infer the population size. It is important to note that
by using this method we are assuming that the
populations changed linearly between population
estimates.Regular monitoring was conducted by a
researcher from the Endangered Wildlife Trust
(EWT) between 2010 and 2018 and for those
years we are able to present individual counts as
packs and their individuals were known.
Re: African Wild Dog
Posted: Mon Jun 29, 2020 7:11 pm
There is a database and each adult individual in KNP is identified. EWT runs the monitoring project and they used also tourist photos to supplement the data base.
A very reliable method, and it is done for several other species, currently there is a Hartmann's zebra cpunt and Id project in Namibia and they ID the zebras individually (mostly from tourist sightings).
A very reliable method, and it is done for several other species, currently there is a Hartmann's zebra cpunt and Id project in Namibia and they ID the zebras individually (mostly from tourist sightings).