Greta, see also: Title: A comparison of the effectiveness of camera trapping and live trapping for sampling terrestrial small-mammal communities Author(s): De Bondi N, White JG, Stevens M, et al. Source: WILDLIFE RESEARCH Volume: 37 Issue: 6 Pages: 456-465 Published: 2010
> Adam T. Ford > Ph.D. Candidate > Department of Zoology > University of British Columbia > Vancouver, B.C > Canada On Thu, Feb 24, 2011 at 2:33 PM, Matt Hayward <[email protected]> wrote: > The method described by?Rowcliffe, J.M., Field, J., Turvey, S.T., Carbone, > C., 2008. Estimating animal density using camera traps without the need for > individual recognition. Journal of Applied Ecology 45, 1228-1236. > allows for population estimation without IDing individuals.? We are using it > for fox & cat density estimates and, thus far, it is yielding believable > results. > Cheers > Matt > ? > > > Dr Matt Hayward > Regional Ecologist, Australian Wildlife Conservancy > PO Box 432, Nichol's Point, Victoria 3501 > > > > -----Original Message----- > From: Alan Eduardo de Barros <[email protected]> > To: ECOLOG-L <[email protected]> > Sent: Fri, Feb 25, 2011 1:46 am > Subject: Re: [ECOLOG-L] Using game cameras to estimate population densities > of small mammals > > > > > Dear Greta, > > You need be able to identify individuals. With large mammals, usually with > cats, this is generally based on strips or dots fur patterns. In general > two cameras are used to get pictures from both sides of an individual. Since > with small mammalls fur patterns may be homogeneus I believe that you > would have to catch them at least once and come up with some visible marker > which could rest for all the study period. > > Since you would need investments on traps anyway I am not sure if it would > be an advantage to invest on cameras as well, rather than run a traditional > recapture with traps. But if funds are available the use of cameras could be > possible. I would borrow some and run a trial experiment first if possible. > > All the best, > Alan > > 2011/2/23 Greta Gramig <[email protected]> > > > Hello Dear Friends, > > > > I've been conducting some studies regarding post-dispersal seed predation > > in > > agricultural systems. I've used game cameras set up at my experimental > seed > > feeding arenas to capture images of the animals that visit these arenas. > So > > far, my interest has mainly been in documenting what kinds of animals are > > feeding on the seeds. > > > > I'd like to use this technology in a study that will look at trophic > > perturbations caused by large seed subsidies in natural systems. In this > > instance, I'd probably want to assess the population density of various > > species of animals that consume seeds. > > > > I've read papers where "camera traps" were used to collect data for mark > > and > > recapture estimates of population density for large mammals. But I can't > > quite see how I would use this method for small mammmals. Does anyone out > > there have any experience with this sort of thing? > > > > Many thanks, > > > > Greta Gramig > > > >
