John Vincent Gatto

7 Questions 2 Answers 0 Followers

Questions related from John Vincent Gatto

Is anyone familiar with salmon carcass mark-recapture studies?

I have a dataset for a mark-recapture study involving salmon carcasses. This data includes the dates the carcass was marked and the dates that the carcass was recaptured. I am trying to estimate...

14 December 2023 4,399 1 View

How do I compute a state space model in the r package dlm where each time step has a separate, known variance?

I am generating state space models for fish populations in the Florida Everglades. We have a unique sample design that I am trying to incorporate into these models. Each site has 3 plots with 7...

07 October 2022 5,242 0 View

How do you perform a random walk state-space model in PROC MIXED?

I am running a series of state-space density-independent and -dependent population models in PROC MIXED. I have reviewed the literature and found out how to do the gompertz and exponential growth...

09 September 2022 4,184 0 View

How do I perform a stock-recruitment state space model (Ricker, B-H, etc)?

I am trying to implement state-space models in a large time series data set. This time series incudes six species across 21 sites over 25+ years. I am looking for code examples to implement...

21 July 2022 3,327 0 View

Should I use bray-curtis or euclidean distance when examining spatial patterns of species diversity metrics (Shannon, Simpson, etc)?

I am investigating differences in diversity metrics across a large spatial scale. I would like to use a Mantel test to see if these metrics are more similar between upstream versus downstream...

11 May 2022 7,963 5 View

Can anyone suggest a paper which describes methods on describing the physical characteristics of freshwater fish eggs (ie. membrane thickness)?

I am conducting a study and I would like to relate it to the varying physical characteristics of egg morphology between several species of fish. I would like to collect information on the...

19 February 2014 1,522 0 View

What is the size at which Lucania goodei and Fundulus chrysotus are born?

I need to find papers that explore the reproductive biology of both Lucania goodei and Fundulus chrysotus. More specifically I am looking for the size at birth for these species. If anyone can...

06 January 2014 1,667 1 View