An Interview with Alan Gelfand

David Warton interviews Alan Gelfand, a keynote speaker at the Statistics in Ecology and Environmental Monitoring (SEEM) conference in Queenstown, NZ. Alan is best known for proposing Bayesian estimation of a posterior distribution using Gibbs sampling, in his classic papers ‘Sampling-Based Approaches to Calculating Marginal Densities‘ and ‘Illustration of Bayesian Inference in Normal Data Models Using Gibbs Sampling‘.

David and Alan discuss the origins of the idea that revolutionised Bayesian statistics, Alan’s current research, and his passion for ecology.

Check out David’s other interviews on the Methods in Ecology and Evolution YouTube channel.

Advertisements

ANDe™: High‐Throughput eDNA Sampling in a Fully Integrated System

Current eDNA sampling technologies consist mainly of do‐it‐yourself solutions. The lack of purpose‐built sampling equipment is limiting the efficiency and standardization of eDNA studies. So, Thomas et al. (a team of molecular ecologists and engineers) designed ANDe™.

In this video, the authors highlight the key features and benefits of ANDe™. This integrated system includes a backpack-portable pump that integrates sensor feedback, a pole extension with remote pump controller, custom‐made filter housings in single‐use packets for each sampling site and on-board sample storage. 

This video is based on the article ‘ANDe: A fully integrated environmental DNA sampling system‘ by Thomas et al.

An Interview with Tony Ives

David Warton interviews Tony Ives, a Keynote speaker at the Statistics in Ecology and Environmental Monitoring (SEEM) conference in Queenstown, NZ. Tony has published a few papers in Methods in Ecology and Evolution over the last couple of years – first we discuss the exchanges on log-transformation of counts (including a paper co-authored with David Warton).

Tony and David then talk about a recent paper by Daijiang Li with Tony, on the need to check for phylogenetic structure when looking for associations between species trait and the environment.

We’ll have more of David’s interviews from the SEEM Conference coming out over the next couple of months. Keep an eye out for them here and on the Methods in Ecology and Evolution YouTube channel.

Satellite Data Fusion for Ecologists and Conservation Scientists

What is satellite data fusion, and how can it benefit ecologists and conservation scientists? In a new Methods in Ecology and Evolution video, Henrike Schulte-to-Bühne answers this question using whiteboards and questionable drawing skills.

The availability and accessibility of multispectral and radar satellite remote sensing (SRS) imagery are at an unprecedented high. However, despite the benefits of combining multispectral and radar SRS data, data fusion techniques, including image fusion, are not commonly used in biodiversity monitoring, ecology and conservation. To address this, the authors provide an overview of the most common SRS data fusion techniques, discussing their benefits and drawbacks, and pull together case studies illustrating the added value for biodiversity research and monitoring.

This video is based on the review article ‘Better together: Integrating and fusing multispectral and radar satellite imagery to inform biodiversity monitoring, ecological research and conservation science by Schulte to Bühne and Pettorelli.

How Can We Quantify the Strength of Migratory Connectivity?

Technological advancements in the past 20 years or so have spurred rapid growth in the study of migratory connectivity (the linkage of individuals and populations between seasons of the annual cycle). A new article in Methods in Ecology and Evolution provides methods to help make quantitative comparisons of migratory connectivity across studies, data types, and taxa to better understand the causes and consequences of the seasonal distributions of populations.

In a new video, Emily Cohen, Jeffrey Hostetler and Michael Hallworth explain what migratory connectivity is and how the methods in their new article – ‘Quantifying the strength of migratory connectivity‘ – can help you to study it. They also introduce and give a quick tutorial on their new R package MigConnectivity.

This video is based on the article ‘Quantifying the strength of migratory connectivity by Cohen et al.

Improved and Harmless Demethylation Method for Ecological Epigenetic Experiments

In a new Methods in Ecology and Evolution video, Javier Puy outlines a new method of experimental plant DNA demethylation for ecological epigenetic experiments. While the traditionally-used approach causes underdeveloped root systems and high mortality of treated plants, this new one overcomes the unwanted effects while maintaining the demethylation efficiency. The authors demonstrate its application for ecological epigenetic experiments: testing transgenerational effects of plant–plant competition.

This novel method could be better suited for experimental studies seeking valuable insights into ecological epigenetics. As it’s based on periodical spraying of azacytidine on established plants, it’s suitable for clonal species reproducing asexually, and it opens the possibility of community-level experimental demethylation of plants.

This video is based on the article ‘Improved demethylation in ecological epigenetic experiments: Testing a simple and harmless foliar demethylation application by Puy et al.

Animal Behaviour through a Virtual Lens

Motion vision is an important source of information for many animals. It facilitates an animal’s movement through an environment, as well as being essential for locating prey and detecting predators. However, information on the conditions for motion vision in natural environments is limited.

To address this, Bian et al. have developed an innovative approach that combines novel field techniques with tools from 3D animation to determine how habitat structure, weather and motion vision influence animal behaviour. Their project focuses on Australia’s charismatic dragon lizards, and will place the animals’ motion displays in a visual-ecological context. The application of this approach goes well beyond this topic and the authors suggest the motion graphic technologies is a valuable tool for investigating the visual ecology of animals in a range of environments and at different spatial and temporal scales.

This video is based on the article ‘Integrating evolutionary biology with digital arts to quantify ecological constraints on vision-based behaviour by Bian et al.

A New Way to Study Bee Cognition in the Wild

Understanding how animals perceive, learn and remember stimuli is critical for understanding both how cognition is shaped by natural selection, and how ecological factors impact behaviour.Unfortunately, the limited number of protocols currently available for studying insect cognition has restricted research to a few commercially available bee species, in almost exclusively laboratory settings.
In a new video Felicity Muth describes a simple method she developed with Trenton Cooper, Rene Bonilla and Anne Leonard for testing both lab- and wild-caught bees for their preferences, learning and memory. They hope this method will be useful for students and researchers who have not worked on cognition in bees before. The video includes a tutorial for carrying out the method and describes the data presented in their Methods in Ecology and Evolution article, also titled ‘A novel protocol for studying bee cognition in the wild‘.

This video is based on the article ‘A novel protocol for studying bee cognition in the wild by Muth et al.

 

Conditional Occupancy Design Explained

Occupancy surveys are widely used in ecology to study wildlife and plant habitat use. To account for imperfect detection probability many researchers use occupancy models. But occupancy probability estimates for rare species tend to be biased because we’re unlikely to observe the animals at all and as a result, the data aren’t very informative.

In their new article – ‘Occupancy surveys with conditional replicates: An alternative sampling design for rare species‘ – Specht et al. developed a new “conditional” occupancy survey design to improve occupancy estimates for rare species, They also compare it to standard and removal occupancy study designs. In this video two of the authors, Hannah Specht and Henry Reich, explain how their new conditional occupancy survey design works. 

This video is based on the article ‘Occupancy surveys with conditional replicates: An alternative sampling design for rare species‘ by Specht et al.