Sampling biodiversity in fragmented landscapes: Researchers can be very very selective in the way they sample biodiversity in fragmented landscapes. They tend to ignore the matrix as a viable habitat that can support a considerable proportion of species in a forested landscape (at least to some extent). And they typically fail to sample across representative ranges of fragmentation metrics characterising the fragmented landscape. So where should I sample then? And how many plots should I sample in?
Our MSc student Ellen Bowler had a detailed look into these two questions and her paper on optimising sampling designs for habiatt fragmentation studies will be submitted any time soon. Keep an eye on this as the paper comes along with a neat software tool allowing you to develop a sampling design for your specific landscape: the only thing you would need is a map and a measure of logistici constraints (e.g. how many plots can you feasibly sample within the time frame and financial constraints of your project).
Analysing biodiversity in fragmented landscapes: How to capture biodiversity response to fragmented landscapes accounting for efefcts from multiple edges (there is not just the nearest edge) and patch-matrix contrast.
We have now generated standalone software, which you can use to compute
- Edge effects map from continuous variables
- metrics quanitfying the impacts of habitat edge effects on species: the ‘fragmentation impact’ metric and the ‘edge sensitivity’ metric
The software can be found here: https://github.com/VeroL/BioFrag
Please cite as: Lefebvre, V., Pfeifer, M. & Ewers, R. M. BioFrag | Edge response—The BioFrag software. https://github.com/VeroL/BioFrag (2016).
(1) Sampling traits of amphibians (in Spanish): by Cortes-gomez et al. 2016 PROTOCOLO MEDICION RASGOS ANFIBIOS 2016 IAvH