Phosphorus forms in sediments of a river-dominated estuary

Sheree J. Watson, Barbara J. Cade-Menun, Joseph Needoba, Tawnya Peterson

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Estuaries are biologically productive transition zones between land and sea that play a vital role in transforming, recycling, and sequestering nutrients and organic matter, thus influencing nutrient loading to coastal systems. Yet, the processes involved in phosphorus (P) transformation and cycling among inorganic and organic P forms are poorly known in estuaries. To better understand the potential for P transformation and sequestration, we identified P forms and estimated their contributions to total P in intertidal wetland sediments of a river-dominated estuary (Columbia River, Oregon, USA) using solution 31P nuclear magnetic resonance spectroscopy (P-NMR). Inorganic P forms dominated sediment P extracts throughout the estuary, with orthophosphate accounting for 71-84% of total extracted P. However, biologically-derived inorganic and organic P forms were also detected. Polyphosphates were found in sediment extracts throughout the estuary, contributing as much as 10% of extracted P. Similar to other wetlands, orthophosphate monoesters and diesters made approximately equal contributions (~ 20%) to total extracted P. However, monoesters (e.g., phytate) were more abundant in sedimentary environments characterized by low organic matter content, while diesters (e.g., DNA) were more abundant in sedimentary environments with high organic matter, regardless of salinity. Collectively, the data show strong evidence for P transformation in sediments of a large, river-dominated estuary, which influences its transport to the coastal Pacific Ocean via the expansive Columbia River plume.

Original languageEnglish (US)
Article number302
JournalFrontiers in Marine Science
Volume5
Issue numberSEP
DOIs
StatePublished - Sep 4 2018

Fingerprint

Estuaries
Phosphorus
Sediments
estuaries
Rivers
estuary
phosphorus
sediments
rivers
river
Biological materials
sediment
Columbia River
orthophosphates
orthophosphate
organic matter
Wetlands
Nutrients
nuclear magnetic resonance
wetlands

Keywords

  • P-nuclear magnetic resonance
  • Estuary
  • Phosphorus
  • River
  • Sediments

ASJC Scopus subject areas

  • Oceanography
  • Global and Planetary Change
  • Aquatic Science
  • Water Science and Technology
  • Environmental Science (miscellaneous)
  • Ocean Engineering

Cite this

Phosphorus forms in sediments of a river-dominated estuary. / Watson, Sheree J.; Cade-Menun, Barbara J.; Needoba, Joseph; Peterson, Tawnya.

In: Frontiers in Marine Science, Vol. 5, No. SEP, 302, 04.09.2018.

Research output: Contribution to journalArticle

@article{abcdaf3dcd2d4af9b5c7d786b32bf69c,
title = "Phosphorus forms in sediments of a river-dominated estuary",
abstract = "Estuaries are biologically productive transition zones between land and sea that play a vital role in transforming, recycling, and sequestering nutrients and organic matter, thus influencing nutrient loading to coastal systems. Yet, the processes involved in phosphorus (P) transformation and cycling among inorganic and organic P forms are poorly known in estuaries. To better understand the potential for P transformation and sequestration, we identified P forms and estimated their contributions to total P in intertidal wetland sediments of a river-dominated estuary (Columbia River, Oregon, USA) using solution 31P nuclear magnetic resonance spectroscopy (P-NMR). Inorganic P forms dominated sediment P extracts throughout the estuary, with orthophosphate accounting for 71-84{\%} of total extracted P. However, biologically-derived inorganic and organic P forms were also detected. Polyphosphates were found in sediment extracts throughout the estuary, contributing as much as 10{\%} of extracted P. Similar to other wetlands, orthophosphate monoesters and diesters made approximately equal contributions (~ 20{\%}) to total extracted P. However, monoesters (e.g., phytate) were more abundant in sedimentary environments characterized by low organic matter content, while diesters (e.g., DNA) were more abundant in sedimentary environments with high organic matter, regardless of salinity. Collectively, the data show strong evidence for P transformation in sediments of a large, river-dominated estuary, which influences its transport to the coastal Pacific Ocean via the expansive Columbia River plume.",
keywords = "P-nuclear magnetic resonance, Estuary, Phosphorus, River, Sediments",
author = "Watson, {Sheree J.} and Cade-Menun, {Barbara J.} and Joseph Needoba and Tawnya Peterson",
year = "2018",
month = "9",
day = "4",
doi = "10.3389/fmars.2018.00302",
language = "English (US)",
volume = "5",
journal = "Frontiers in Marine Science",
issn = "2296-7745",
publisher = "Frontiers Media S. A.",
number = "SEP",

}

TY - JOUR

T1 - Phosphorus forms in sediments of a river-dominated estuary

AU - Watson, Sheree J.

AU - Cade-Menun, Barbara J.

AU - Needoba, Joseph

AU - Peterson, Tawnya

PY - 2018/9/4

Y1 - 2018/9/4

N2 - Estuaries are biologically productive transition zones between land and sea that play a vital role in transforming, recycling, and sequestering nutrients and organic matter, thus influencing nutrient loading to coastal systems. Yet, the processes involved in phosphorus (P) transformation and cycling among inorganic and organic P forms are poorly known in estuaries. To better understand the potential for P transformation and sequestration, we identified P forms and estimated their contributions to total P in intertidal wetland sediments of a river-dominated estuary (Columbia River, Oregon, USA) using solution 31P nuclear magnetic resonance spectroscopy (P-NMR). Inorganic P forms dominated sediment P extracts throughout the estuary, with orthophosphate accounting for 71-84% of total extracted P. However, biologically-derived inorganic and organic P forms were also detected. Polyphosphates were found in sediment extracts throughout the estuary, contributing as much as 10% of extracted P. Similar to other wetlands, orthophosphate monoesters and diesters made approximately equal contributions (~ 20%) to total extracted P. However, monoesters (e.g., phytate) were more abundant in sedimentary environments characterized by low organic matter content, while diesters (e.g., DNA) were more abundant in sedimentary environments with high organic matter, regardless of salinity. Collectively, the data show strong evidence for P transformation in sediments of a large, river-dominated estuary, which influences its transport to the coastal Pacific Ocean via the expansive Columbia River plume.

AB - Estuaries are biologically productive transition zones between land and sea that play a vital role in transforming, recycling, and sequestering nutrients and organic matter, thus influencing nutrient loading to coastal systems. Yet, the processes involved in phosphorus (P) transformation and cycling among inorganic and organic P forms are poorly known in estuaries. To better understand the potential for P transformation and sequestration, we identified P forms and estimated their contributions to total P in intertidal wetland sediments of a river-dominated estuary (Columbia River, Oregon, USA) using solution 31P nuclear magnetic resonance spectroscopy (P-NMR). Inorganic P forms dominated sediment P extracts throughout the estuary, with orthophosphate accounting for 71-84% of total extracted P. However, biologically-derived inorganic and organic P forms were also detected. Polyphosphates were found in sediment extracts throughout the estuary, contributing as much as 10% of extracted P. Similar to other wetlands, orthophosphate monoesters and diesters made approximately equal contributions (~ 20%) to total extracted P. However, monoesters (e.g., phytate) were more abundant in sedimentary environments characterized by low organic matter content, while diesters (e.g., DNA) were more abundant in sedimentary environments with high organic matter, regardless of salinity. Collectively, the data show strong evidence for P transformation in sediments of a large, river-dominated estuary, which influences its transport to the coastal Pacific Ocean via the expansive Columbia River plume.

KW - P-nuclear magnetic resonance

KW - Estuary

KW - Phosphorus

KW - River

KW - Sediments

UR - http://www.scopus.com/inward/record.url?scp=85053115481&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053115481&partnerID=8YFLogxK

U2 - 10.3389/fmars.2018.00302

DO - 10.3389/fmars.2018.00302

M3 - Article

VL - 5

JO - Frontiers in Marine Science

JF - Frontiers in Marine Science

SN - 2296-7745

IS - SEP

M1 - 302

ER -