Replication Data for: Subtidal and Intertidal Microplastics, Saint John Harbour, New Brunswick (CC BY 4.0)

Heather Hunt. The subtidal samples were collected using a 0.1〖 m〗^2 Smith McIntyre grab (SMG) sampler, while the intertidal samples were collected using a metal, paint-free trowel.

Lab analysis was conducted as per the protocols developed by Krista Beardy and involved two extractions of microplastics; the first extraction used a 10% potassium hydroxide (KOH) solution and the second extraction used a concentrated zinc chloride (ZnCl2) solution. Environment and Climate Change Canada’s Atlantic Ecosystems Initiatives program provided funding to support this work; COINAtlantic (coinatlantic.ca) collaborated with research partners to make data publicly available under the FAIR data guiding principles.