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Occupancy modelling - tips on including covariates in Program PRESENCE
October 22, 2018

Occupancy modelling - tips on including covariates in Program PRESENCE

Darryl is often asked about the correct way to include covariates in the design matrices in Program PRESENCE....

Workshops galore!
October 22, 2018

Workshops galore!

Since our last update, Darryl has spent most of his time globe trotting, running workshops in Australia and...

Occupancy modelling - home range vs grid cell size
September 26, 2018

Occupancy modelling - home range vs grid cell size

Darryl has often seen examples where researchers are using occupancy-based metrics and define the size of a sampling...

Hector's dolphins and snow leopards
September 25, 2018

Hector's dolphins and snow leopards

Here's a couple of quick highlights from the past month. South coast South Island Hector's dolphin project update We have...

Dolphins, penguins and cats!
August 23, 2018

Dolphins, penguins and cats!

It's been another busy month working on a variety of projects, but here's some highlights that we've managed...

How to calculate odds ratios from logistic regression coefficients
August 23, 2018

How to calculate odds ratios from logistic regression coefficients

When analysing data with logistic regression, or using the logit link-function to model probabilities, the effect of covariates...

Interpreting confidence interval overlap - you might be doing it wrong!
July 13, 2018

Interpreting confidence interval overlap - you might be doing it wrong!

People will often compare two confidence intervals and if they do not overlap, take that as evidence of...

Round the world in 18 days
July 13, 2018

Round the world in 18 days

The last few months have been extremely busy at Proteus, but here's a quick overview of some of...

Animal welfare, fish and training
May 31, 2018

Animal welfare, fish and training

April and May have been busy months and we've been working on a range of interesting projects. Animal welfare...

Spatial correlation and the independence assumption with occupancy modelling
May 30, 2018

Spatial correlation and the independence assumption with occupancy modelling

Independent observations is a key assumption for many statistical methods, including occupancy models. People are often concerned about...

Something old, something new
April 20, 2018

Something old, something new

We've been developing our social media presence, using R to create images of famous quotes, and worked on a couple of projects with a difference this month.

Beer bottles and mark-recapture?
April 17, 2018

Beer bottles and mark-recapture?

How many bottles of beer were drunk at the West Taieri Rugby Football Club after a game? We can use mark-recapture methods to estimate this!

Occupancy modelling - more than species presence/absence!
March 20, 2018

Occupancy modelling - more than species presence/absence!

In this video Darryl MacKenzie provides an overview of occupancy modelling, noting that it is for more than just species presence/absence

Mother Nature waylays our plans!
March 20, 2018

Mother Nature waylays our plans!

Mother Natured didn't do us any favours this month!

Sample size tips for closed population capture-recapture studies
February 24, 2018

Sample size tips for closed population capture-recapture studies

In this video Darryl provides some tips on sample size considerations for estimating abundance or population size with closed population capture-recapture (or mark-recapture) methods. Here is the R code used to create the plots discussed in the video.

A new course and Hectors dolphins
February 24, 2018

A new course and Hectors dolphins

What have we been up to this month?

Our plans for the future and bilby distribution
January 18, 2018

Our plans for the future and bilby distribution

What's in store for Proteus in 2018?

Considerations when using continuous-valued covariates
January 17, 2018

Considerations when using continuous-valued covariates

Darryl gives some tips on important considerations when using continuous-valued covariates in analyses

Beer fridge statistics
December 16, 2017

Beer fridge statistics

Darryl uses the contents of his beer fridge to explain the relationship between probabilities, odds and odds ratios.

Book, ducks and short courses
December 16, 2017

Book, ducks and short courses

The title of this post says it all!

Interpreting confidence intervals
November 02, 2017

Interpreting confidence intervals

In this month’s video tip Darryl explains how we should interpret confidence intervals.

New website and kangaroo abundance
November 01, 2017

New website and kangaroo abundance

If you’re reading this post then you’ve already found our new website! Welcome! The entire website has been...

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