Telemetry Data...

[Fish_Boy]

We have about 20 acoustic receivers in a river and 40-80 acoustic tags, depending on species. We get lots of habitual movements and transience and would like to do some comparative work with what we have been doing with traditional concurrent Floy tag recapture study.

Just wondering whether anyone knows of some good examples how telemetry data can be used with MARK. Our acoustic receivers are fixed positions so the detection depends only on the background hydraulic noise and fish movements. That being said a fish can move past certain receivers in noisy habitats, but do get picked up both downstream and upstream of the missed recievers. However, the noisy receivers are not always missed.

Thanks,

Patrick

[Fish_Boy]

I guess the time lapse would dictate I am in a gray zone or going boldly as Shatner would say. I will have my data up in the coming month or so and let you know what comes of it.

I wish this was one of those RTM (or rtfm) replies from EGC or a CNRHK (Chuck Norris roundhouse kick). I will post findings.

[Fish_Boy]

I came acroos an interesting paper by Danancher et al in CJFAS from 2004, which explored capture-recapture estimates of space used in streams (CRESUS). This is precisely the same issue I have with stationary acoustic receivers.

Has anyone read this paper? or tried this approach using spatial approach as opposed to temporal approach?

[Fish_Boy]

... got side tracked on other projects at work. I will attempt this month to use telemetry data from stationary acoustic receivers to determine capture-recapture estimates of space use in streams (CRESUS) using MARK.

If anyone is interested the citation for the original CRESUS paper is:

Danancher, D., J. Labonne, R. Pradel, and P. Gaudin. 2004. Capture-recapture estimates of space used in streams (CRESUS) at the population scale: case study on Zingel asper (percid), a threatened species of the Rhone catchment. Canadian Journal of Fisheries and Aquatic Sciences 61: 476-486.