I'm a new MARK user: could anyone help me?

[hjunji21]

Hi!

I'm a new MARK user and I want to learn how to use it.

I have some questions and I would become happy if someone can help me.

1) I have data related to 3 occasions and 70 animals marked at total. I collected these data for 3 weeks (interval of 7 days). Considering the population is closed, what should be the best model I have to select for Closed Captures Data Type? May be the "standard" closed captures (the fisrt one on the list of the 12 models)?

2) What is the diference among the link functions presented in the window when we run the analysis?

3) What is the diference between the var. estimations (the Hessian and the 2ndPart) presented in the window when we run the analysis?

Thank you for attention.

Kind Regards

[jlaake]

Please read the documentation.

http://www.phidot.org/software/mark/docs/book/

[hjunji21]

Hi,

I have already been reading this documentation.

Then, I selected the standard closed capture models to analyze my data set. In addition, I selected the "Sin" option as link function and "2ndPart" as Var. Estimation.

However, I had the N equal to total marked animals (=70) with the models:
- {p(t) c(.) N(.) PIM} (the smaller AIC value (=-185,6190)),
- {p(t) c(.) N(t) PIM},
- {p(t) c(t) N(.) PIM},
- {p(t) c(t) N(t) PIM}.

But, when I ran the:
- {p(.) c(.) N(.) PIM},
- {p(.) c(.) N(t) PIM},
- {p(.) c(t) N(.) PIM},
- {p(.) c(t) N(t) PIM} (the greater AIC value (=-180,9811)),
I had an another N (=79).

Do you think this results could be trustable? If you have any comments, please, could you tell me?

Thank you for attention.

Kind Regards

[Paul Lukacs]

In the closed models, the last p and N are not estimable in a p(t) c(t) model. See chapter 15 section 9 for details.

Paul