Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids

Abstract The expansion of global aquaculture activities is important for the wellbeing of future generations in terms of employment and food security. Rearing animals in open-exchange cages permits the release of organic wastes, some of which ultimately reaches the underlying sediments. The developm...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Daniel J. Mayor, Nia B. Gray, Giannina S. I. Hattich, Barry Thornton
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e62a785376384e2db98ac84f0dab5fbd
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e62a785376384e2db98ac84f0dab5fbd
record_format	dspace
spelling	oai:doaj.org-article:e62a785376384e2db98ac84f0dab5fbd2021-12-02T11:40:43ZDetecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids10.1038/s41598-017-05252-w2045-2322https://doaj.org/article/e62a785376384e2db98ac84f0dab5fbd2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05252-whttps://doaj.org/toc/2045-2322Abstract The expansion of global aquaculture activities is important for the wellbeing of future generations in terms of employment and food security. Rearing animals in open-exchange cages permits the release of organic wastes, some of which ultimately reaches the underlying sediments. The development of rapid, quantitative and objective monitoring techniques is therefore central to the environmentally sustainable growth of the aquaculture industry. Here, we demonstrate that fish farm-derived organic wastes can be readily detected at the seafloor by quantifying sediment phospholipid fatty acids (PLFAs) and their carbon stable isotope signatures. Observations across five farms reveal that farm size and/or distance away from it influence the spatial distribution of the generated organic wastes and their effect on benthic bacterial biomass. Comparison to the isotopic signatures of fish feed-derived PLFAs indicates that 16:0 and 18:1(n-9) are potential biomarkers for fish farm-derived organic wastes. Our results suggest that stable isotope analysis of sediment PLFAs has potential for monitoring the environmental performance of aquaculture activities, particularly given the increasing prevalence of terrigenous organic matter in aquaculture feed stocks because it is isotopically district to marine organic matter.Daniel J. MayorNia B. GrayGiannina S. I. HattichBarry ThorntonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daniel J. Mayor Nia B. Gray Giannina S. I. Hattich Barry Thornton Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
description	Abstract The expansion of global aquaculture activities is important for the wellbeing of future generations in terms of employment and food security. Rearing animals in open-exchange cages permits the release of organic wastes, some of which ultimately reaches the underlying sediments. The development of rapid, quantitative and objective monitoring techniques is therefore central to the environmentally sustainable growth of the aquaculture industry. Here, we demonstrate that fish farm-derived organic wastes can be readily detected at the seafloor by quantifying sediment phospholipid fatty acids (PLFAs) and their carbon stable isotope signatures. Observations across five farms reveal that farm size and/or distance away from it influence the spatial distribution of the generated organic wastes and their effect on benthic bacterial biomass. Comparison to the isotopic signatures of fish feed-derived PLFAs indicates that 16:0 and 18:1(n-9) are potential biomarkers for fish farm-derived organic wastes. Our results suggest that stable isotope analysis of sediment PLFAs has potential for monitoring the environmental performance of aquaculture activities, particularly given the increasing prevalence of terrigenous organic matter in aquaculture feed stocks because it is isotopically district to marine organic matter.
format	article
author	Daniel J. Mayor Nia B. Gray Giannina S. I. Hattich Barry Thornton
author_facet	Daniel J. Mayor Nia B. Gray Giannina S. I. Hattich Barry Thornton
author_sort	Daniel J. Mayor
title	Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
title_short	Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
title_full	Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
title_fullStr	Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
title_full_unstemmed	Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
title_sort	detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e62a785376384e2db98ac84f0dab5fbd
work_keys_str_mv	AT danieljmayor detectingthepresenceoffishfarmderivedorganicmatterattheseafloorusingstableisotopeanalysisofphospholipidfattyacids AT niabgray detectingthepresenceoffishfarmderivedorganicmatterattheseafloorusingstableisotopeanalysisofphospholipidfattyacids AT gianninasihattich detectingthepresenceoffishfarmderivedorganicmatterattheseafloorusingstableisotopeanalysisofphospholipidfattyacids AT barrythornton detectingthepresenceoffishfarmderivedorganicmatterattheseafloorusingstableisotopeanalysisofphospholipidfattyacids
_version_	1718395613995859968

Detecting the presence of fish farm-derived organic matter at the seafloor using stable isotope analysis of phospholipid fatty acids

Ejemplares similares