Attenuation of species abundance distributions by sampling
journal contributionposted on 21.04.2016, 10:16 by Hideyasu ShimadzuHideyasu Shimadzu, Ross Darnell
Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resourcemanagement questions. In practice, biodiversity can only be assessed from biological material taken by surveys, a difficult task given limited time and resources. A type of random sampling, or often called sub-sampling, is a commonly used technique to reduce the amount of time and effort for investigating large quantities of biological samples. However, it is not immediately clear how (sub-)sampling affects the estimate of biodiversity aspects from a quantitative perspective. This paper specifies the effect of (sub-)sampling as attenuation of the species abundance distribution (SAD), and articulates how the sampling bias is induced to the SAD by random sampling. The framework presented also reveals some confusion in previous theoretical studies.
This work has been funded through the Commonwealth Environment Research Facilities (CERF) programme, an Australian Government initiative. The CERF Marine Biodiversity Hub is a collaborative partnership between the University of Tasmania, CSIROWealth from Oceans Flagship, Geoscience Australia, Australian Institute of Marine Science and Museum Victoria. H.S. acknowledges the support by the European Research Council (project BioTIME 250189).
- Mathematical Sciences