Spatial and temporal analysis of litter in the Celtic Sea from Groundfish Survey data: Lessons for monitoring

Marine Pollution Bulletin
M MoriartyD G Reid

Abstract

The Marine Strategy Framework Directive requires EU Member States to sample and monitor marine litter. Criteria for sampling and detecting spatial and/or temporal variation in the amount of litter present have been developed and initiated throughout Europe. These include implementing standardised sampling and recording methods to enable cross-comparison and consistency between neighbours. Parameters of interest include; litter occurrence, composition, distribution and source. This paper highlights the litter-related initiatives occurring in Irish waters; presents an offshore benthic litter sampling series; provides a power analysis to determine trend detection thresholds; identifies areas and sources of litter; and proposes improvements to meet reporting obligations. Litter was found to be distributed throughout Irish waters with highest occurrences in the Celtic Sea. Over 50% of litter encountered was attributed to fishing activities: however only a small proportion of the variability in litter occurrence could be explained by spatial patterns in fishing effort. Issues in implementing standardised protocol were observed and addressed.

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Citations

Mar 20, 2015·PloS One·Emilie Reuchlin-HugenholtzJeffrey A Hutchings
Aug 9, 2016·Marine Environmental Research·Heidi AcamporaIan O'Connor
May 8, 2021·Marine Pollution Bulletin·Nika StagličićPero Tutman

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