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

Autor: Alldred FC; Department of Earth Sciences, Durham University, South Road, Durham DH1 3LE, UK. Electronic address: freya.alldred@durham.ac.uk., Gröcke DR; Department of Earth Sciences, Durham University, South Road, Durham DH1 3LE, UK., Jackson SE; Department of Mathematical Sciences, Durham University, Stockton Road, Durham DH1 3LE, UK.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Oct; Vol. 207, pp. 116828. Date of Electronic Publication: 2024 Sep 05.
DOI: 10.1016/j.marpolbul.2024.116828
Abstrakt: Macroalgal nitrogen isotope analysis (δ 15 N) is a reliable method for the identification of nitrogen pollutant sources. Understanding δ 15 N 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. specimens in September 2022 and May 2023 from Staithes Harbour, North Yorkshire, England. δ 15 N values for Staithes Beck were elevated when compared to sites in Staithes Harbour and the North Sea: this is attributed to sewage effluent and/or agricultural manure. Few sites within Staithes Harbour were significantly different from one another in terms of δ 15 N, suggesting a relatively homogenous nitrogen isotope record of the harbour. Simple harbour environments like Staithes may be relatively well mixed, and thus, sampling one harbour site may be enough to represent the entire harbour. Of course, more complex harbours may require more sample locations to ascertain point sources and mixing in the harbour.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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