Characteristics of dissolved organic matter in the Upper Klamath River, Lost River, and Klamath Straits Drain, Oregon and California

Goldman, Jami H.; Sullivan, Annett B.

doi:10.3133/ofr20171160

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…In this study, a 280 and a 355 in water were significantly higher during the dry season than wet season ( Figure 3 c,d), and a 280 during the dry season was significantly higher than a 355 , suggesting that the concentrations of protein-like components of DOM in the Wanggang River were higher than humic-like components during the dry season. This was mainly due to the smaller volume of river water during the dry season, which was strongly influenced by the large amount of DOM from the degradation of phytoplankton and microbes in the river and the influx of DOM in tributaries which were strongly influenced by external sources [ 43 ].…”

Section: Discussionmentioning

confidence: 99%

The Distribution of DOM in the Wanggang River Flowing into the East China Sea

Jie

Pei

Zhang

et al. 2022

IJERPH

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Dissolved organic matter (DOM) is a central component in the biogeochemical cycles of marine and terrestrial carbon pools, and its structural features greatly impact the function and behavior of ecosystems. In this study, the Wanggang River, which is a seagoing river that passes through Yancheng City, was selected as the research object. Three-dimensional (3D) fluorescence spectral data and UV–visible spectral data were used for component identification and source analysis of DOM based on the PARAFAC model. The results showed that the DOM content of the Wanggang River during the dry season was significantly higher than during the wet season; the DOM content increased gradually from the upper to lower reaches; the proportion of terrigenous components was higher during the wet season than during the dry. UV–Vis spectral data a280 and a355 indicated that the relative concentrations of protein-like components in the DOM of the Wanggang River were higher than those of humic-like components, and the ratio of aromatic substances in the DOM of the Wanggang River water was higher during the wet season. The DOM in the Wanggang River was dominated by protein-like components (>60%), and the protein-like components were dominated by tryptophan proteins (>40%). This study showed that the temporal and spatial distributions of DOM in rivers can be accurately determined using 3D fluorescence spectroscopy combined with the PARAFAC model. This provides useful insight into the biogeochemical process of DOM in rivers of coastal areas.

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Section: Discussionmentioning

confidence: 99%

The Distribution of DOM in the Wanggang River Flowing into the East China Sea

Jie

Pei

Zhang

et al. 2022

IJERPH

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“…Along with nitrogen and phosphorus, carbon is an important component of organic matter. The components and characteristics of organic matter in the Klamath Straits Drain, as well as the Lost River and Klamath River, were described in a recent report by Goldman and Sullivan (2017). Together, DOC and POC comprise total organic carbon; these carbon components typically are measured to quantify amount and type of organic matter to aid in understanding nutrient sources, light extinction, and BOD, among other things.…”

Section: Particulate and Dissolved Organic Carbonmentioning

confidence: 99%

Modeling hydrodynamics, water temperature, and water quality in Klamath Straits Drain, Oregon and California, 2012–15

Sullivan¹,

Rounds²

2018

Scientific Investigations Report

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For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.

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“…This form of organic carbon is different than the particulate algal carbon observed at site FMT, which represents biomass from Upper Klamath Lake that has an oxygen demand when the algae decompose. The organic carbon composition observed at site PPD suggests a fresh, slightly decomposed carbon that could originate from sources such as animal manure or algal exudates based on low humification index values, which show the relative contribution of terrestrial or microbial sources of organic matter (Goldman and Sullivan, 2017). Higher humification index values typically indicate an increasing rate of carbon decomposition.…”

Section: Klamath Drainage District Sites and Site Lrdcmentioning

confidence: 99%

Nutrient loads in the Lost River and Klamath River Basins, south-central Oregon and northern California, March 2012–March 2015

Schenk¹,

Stewart²,

Eldridge³

2018

Scientific Investigations Report

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit https://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. DatumHorizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83). viii Supplemental InformationConcentrations of chemical constituents in water are given in either milligrams per liter (mg/L) or micrograms per liter (µg/L). Abbreviations Significant FindingsThe U.S. Geological Survey and Bureau of Reclamation collected water-quality data from March 2012 to March 2015 at locations in the Lost River and Klamath River Basins, Oregon, in an effort to characterize water quality and compute a nutrient budget for the Bureau of Reclamation Klamath Reclamation Project. The study described in this report resulted in the following significant findings:• Total phosphorus (TP), total nitrogen (TN), 5-day biochemical oxygen demand (BOD 5 ), and 5-day carbonaceous biochemical oxygen demand (CBOD 5 ) loads, calculated using the U.S. Geological Survey LOADEST software package at the upper and lower boundaries of the Klamath Reclamation Project, indicated higher loads at the upper boundary on the southern end of Upper Klamath Lake upstream of the Bureau of Reclamation A Canal diversion compared to the lower boundary on the Klamath River downstream of Keno Dam. Accounting for the diversion of loads down A Canal, BOD 5 and CBOD 5 loads decreased between these two sites during irrigation season, indicating that the Klamath Reclamation Project is not a large source of oxygen-demanding material and that much of the oxygen demand at study site FMT, the northern boundary of the study area, has been expressed by the time the same water passes through site KRK, the southern boundary of the study area.• An evaluation of the nutrient balance along the Klamath River flowpath from sites FMT to KRK indicated that, during irrigation season in the 3 years of the study period (March 2012-March 2015, more loads of TP, TN, BOD 5 , and CBOD 5 were being diverted from the Klamath River than were being added to the Klamath River from the combination of Klamath Straits Drain, regulated point sources along the Klamath River, and internal loading from the bottom sediments in the river. By contrast, during non-irrigation seasons, more loads were added to the Klamath River than were diverted through Ady and North Canals, and this difference primarily was due to additional loads to the river from the Lost River Diversion Channel.• At the Lost River Diversion...

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Characteristics of dissolved organic matter in the Upper Klamath River, Lost River, and Klamath Straits Drain, Oregon and California

Cited by 5 publications

References 7 publications

The Distribution of DOM in the Wanggang River Flowing into the East China Sea

The Distribution of DOM in the Wanggang River Flowing into the East China Sea

Modeling hydrodynamics, water temperature, and water quality in Klamath Straits Drain, Oregon and California, 2012–15

Nutrient loads in the Lost River and Klamath River Basins, south-central Oregon and northern California, March 2012–March 2015

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