Current state of knowledge regarding the effects of dredging-related ‘pressure’ on seagrasses: Report of Theme 5 - Project 5.1.1 prepared for the Dredging Science Node

Authors

Kathryn McMahon, Edith Cowan UniversityFollow
Paul Lavery, Edith Cowan UniversityFollow
John Statton
Roisin McCallum, Edith Cowan UniversityFollow
Udhi Hernawan, Edith Cowan University

Document Type

Report

Publisher

Western Australian Marine Science Institution

School

School of Science

Comments

McMahon, K., Lavery, P., McCallum, R. & Hernawan, U. (2017). Current state of knowledge regarding the effects of dredging-related ‘pressure’ on seagrasses. Report of Theme 5 - Project 5.1.1 prepared for the Dredging Science Node, Western Australian Marine Science Institution, Perth, Western Australia, 64 pp.

https://wamsi.org.au/project/5-1-1-review-dredging-and-seagrasses/

Abstract

This review summarises our understanding, from a northwest of Western Australia and global perspective, the pressures seagrasses are exposed to from dredging, their tolerance thresholds and responses to dredging related stressors, and the bioindicators of dredging related stressors. From this information, we also identified gaps in our knowledge and areas where environmental management and monitoring approaches could be improved.

Aims

To determine the levels of stress (light reduction/sediment deposition) that occur under dredging conditions and evaluate the likely effect of these levels of pressure based on the existing seagrass literature, considering the range of variability and environmental quality conditions associated with dredging programs in WA. It sets the baseline on which experimental studies will build.

Related Publications

WAMSI 2 - Dredging Node - Project 5.1.2 - Seagrasses of the North West of WA: biogeography and considerations for dredging-related research

WAMSI 2 - Dredging Node - Project 5.2 - Genetic variability of seagrass in NW Australia [report]

WAMSI 2 - Dredging Node - 5.3 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Report

WAMSI 2 - Dredging Node - Project 5.5.2 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Report

WAMSI 2 - Dredging Node – Project 5.5.3 Response and recovery of a mixed tropical seagrass assemblage to variation in the frequency and magnitude of light deprivation.

WAMSI 2 - Dredging Node - 5.6 - Defining thresholds and indicators of primary-producer response to dredging-related pressures

WAMSI 2 - Dredging Node - Project 9.1 - Effects of dredging related pressures on critical ecological processes for other organisms

Related Datasets

WAMSI 2 - Dredging Node - Project 5.2 - Genetic variability of seagrass in NW Australia [dataset]

WAMSI 2 - Dredging Node - Project 5.5.2 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Experiment 2

WAMSI 2 - Dredging Node - Project 5.5.3 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Experiment 3

WAMSI 2 - Dredging Node - 5.3 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships [dataset]

Creative Commons License

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