Brian Leo

7 Questions 6 Answers 0 Followers

Questions related from Brian Leo

Bayesian log link regression fails to converge using jags in r?

I am modeling annual densities of birds to estimate population trends in a Bayesian framework, using a log-link regression in rjags. I am modeling long term (2002 - 2020) and short term...

15 December 2021 1,529 8 View

Is the "Releve" method still standard protocol for plant community sampling and percent cover estimation?

I am not a botanist but need to estimate the average percent vegetation cover of my study area. I have researched this and found articles that use the "releve" method for determining plot size...

23 September 2020 5,982 6 View

Is there a publicly available data set and tutorial for application of Bayesian methods to determine population trends over time?

Looking for example data sets and R code for applying Bayesian methods to determine population trends of wildlife using time series abundance or density estimates.

07 October 2019 7,955 3 View

Hierarchical Distance Sampling; what is the best way to deal with multiple, non-clustered individuals detected at the same site in same time period?

This question references the Kery and Royle textbook, "Applied Hierarchical Modeling in Ecology", Volume 1. I am trying to apply open HDS models to a 20 year point transect distance data set...

24 September 2019 5,335 3 View

What is the best aerial survey sampling method for estimating ungulate density in a relatively small (50 km2) study area?

I have access to a helicopter and I'd like to figure out the best way to estimate abundance of a resident mouflon/sheep hybrid population in Hawaii. Any go-to papers for this?

15 May 2019 3,978 1 View

When conducting distance analysis in R -- for those transects that resulted in no observations, do I include values for covariates in the flatfile?

I am trying to analyze distance data that were collected via line-transect survey method. I was wondering, when you include a categorical covariate in the formula for your key function, do you...

17 January 2019 3,607 4 View

When reviewing a manuscript, is it unethical to suggest to an author to consider reading an article that you have written?

I have begun to review a manuscript as a part of the peer-review process for a journal. It is clear that the authors began writing a few years ago because of the relatively old citations and...

01 January 1970 6,868 20 View