Nitrogen isotope variability of macroalgae from a small fishing village, Staithes Harbour, Yorkshire, UK.

Macroalgal nitrogen isotope analysis (δN) is a reliable method for the identification of nitrogen pollutant sources. Understanding δN geospatial variation within small bays and/or harbour environments can help identify point sources of nitrogen pollution. This study sampled over 300 Fucus vesiculosus and Ulva sp.

Diffuse and concentrated nitrogen sewage pollution in island environments with differing treatment systems.

Macroalgae is an under-utilised tool as a bioindicator of anthropogenic nitrogen loading to the coastal environment in the UK. This study compared two island systems-Jersey (Channel Islands) and St Mary's (Isles of Scilly) to assess how differing sewerage infrastructure affects nitrogen loading. A total of 831 macroalgae samples of Fucus vesiculosus and Ulva sp.