Does fine sediment source as well as quantity affect salmonid embryo mortality and development?

Sear, D.A.; Jones, J.I.; Collins, A.L.; Hulin, A.; Burke, N.; Bateman, S.; Pattison, I.; Naden, P.S.. 2016 Does fine sediment source as well as quantity affect salmonid embryo mortality and development? Science of the Total Environment, 541. 957-968.

Full text not available from this repository.


Fine sediments are known to be an important cause of increased mortality in benthic spawning fish. To date, most of the research has focussed on the relationship between embryo mortality and the quantity of fine sediment accumulated in the egg pocket. However, recent evidence suggests a) that the source of fine sediment might also be important, and b) that fitness of surviving embryos post-hatch might also be impacted by the accumulation of fine sediments. In this paper, we report an experiment designed to simulate the incubation environment of brown trout (Salmo trutta) and Atlantic salmon (Salmo salar). During the experiment, the incubating embryos were exposed to different quantities of fine (< 63 μm) sediment derived from four different sources; agricultural topsoils, damaged road verges, eroding river channel banks and tertiary level treated sewage. Results showed that mass and source are independently important for determining the mortality and fitness of alevin. Differences between species were observed, such that brown trout are less sensitive to mass and source of accumulated sediment. We demonstrate for the first time that sediment source is an additional control on the impact of fine sediment, and that this is primarily controlled by the organic matter content and oxygen consumption of the catchment source material.

Item Type: Publication - Article
Digital Object Identifier (DOI):
CEH Sections/Science Areas: Acreman
ISSN: 0048-9697
Additional Keywords: sediment sources, brown trout, Atlantic salmon, fine sediment, organic matter
NORA Subject Terms: Ecology and Environment
Date made live: 16 Dec 2015 15:28 +0 (UTC)

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...