Below is a press release about the Methods in Ecology and Evolution article ‘ What goes in, must come out: Combining scat‐based molecular diet analysis and quantification of ingested microplastics in a marine top predator‘ taken from Plymouth Marine Laboratory.
Wild grey seals. By Philip Newman, Natural Resources Wales
A brand new method has been developed by scientists at
Plymouth Marine Laboratory (PML) and the University of Exeter, in collaboration with Abertay University and Greenpeace Research Laboratories, to investigate links between top predator diets and the amount of microplastic they consume through their prey. It offers potential insights into the exposure of animals in the ocean and on land to microplastics.
An estimated 9.6-25.4 million tonnes of plastic will enter the sea annually by 2025. Microplastics in particular have been found on the highest mountains and in the deepest seas. New techniques are needed to trace, investigate and analyse this growing concern.
Posted in General, Methods papers |
Tagged DNA, Food Web, Grey Seal, Marine Ecosystems, metabarcoding, Microplastics, Plastic Pollution, Plymouth Marine Laboratory, Sarah Nelms, Scat, Top Predator, Trophic Transfer |
The August issue of Methods is now online!
This month’s issue of is even bigger than our July issue. In 250 pages of exciting ecology and evolution, we’re covering the Methods in Ecology and Evolution impact of biologgers, seed dispersal, interactions between individuals, and loads more.
With the extra long issue, comes more free articles. There are ELEVEN papers in our August issue that are free to access for absolutely anyone. You can find out about the four
Practical Tools papers and seven Applications articles below.
Find out a little more about the new issue of
below. Methods in Ecology and Evolution Continue reading
Posted in Journal updates, Methods papers |
Tagged Acoustic Ecology, Airborne Laser Scanning, Alpha Diversity, Animal Social Networks, Beta Diversity, climate change, eDNA, Environmental DNA, Food Web, Index P, Invertebrates, metabarcoding, Mosquito-borne Viral Suitability Estimator, movement ecology, Social Network Analysis, Spectroscopy, Video Analysis Software, Video Tracking |
Stable isotopes as a tool for ecologists
Our research into the foraging ecology of this cheeky parrot (kea: Nestor notabilis) prompted us to develop a simple method to establish discrimination factors © Andruis Pašukonis
Isotopes are atoms that have the same number of protons and electrons but differ in their number of neutrons; they are lighter and heavier forms of the same element. Unlike radioactive isotopes, stable isotopes do not decay over time.
The ratio of heavy to light stable carbon (δ
13C) and nitrogen (δ 15N) isotopes in an animal’s tissues depend on its diet, although offset by a certain amount. This integration of δ 13C and δ 15N from an animal’s diet into its tissues allows ecologists to use stable isotope analysis to investigate a species’ present and historical diets, food-web structures, niche shifts, migration patterns and more. Continue reading
Posted in Methods papers, Practical methods in the field, top papers |
Tagged Amanda Greer, Animal diet, Bayesian, Carbon, dietary estimations, Discrimination Factor, ecology, Food Web, Kea, Migration Pattern, Mixing Model, Nestor Notabilis, New Zealand, Niche Shift, Nitrogen, Southern Alps, Stable Isotope |