Application of a one-dimensional model to explore the drivers and lability of carbon in the northern Gulf of Mexico

Pauer, James J.; DePetro, Phillip A.; Anstead, Amy M.; Lehrter, John C.

doi:10.1016/j.ecolmodel.2014.09.007

Cited by 4 publications

(3 citation statements)

References 51 publications

(73 reference statements)

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“…Initial values for the model coefficients were determined based on field measurements in the Gulf of Mexico, calibration of the one-dimensional version of the model, a previous nutrient calibration of GoMDOM, literature values from process studies, and models from other estuarine and marine systems . The model was calibrated by conducting one-year simulations for the 2006 input data set and manually varying selected model coefficients.…”

Section: Methodsmentioning

confidence: 99%

“…We previously developed a one-dimensional biogeochemical model, GoMDOM-1D, to explore the sources and fate of organic carbon on the LCS 20 and a three-dimensional biogeochemical model, the Gulf of Mexico Dissolved Oxygen Model (GoMDOM), to evaluate the impact of nutrient boundary concentrations on primary production on the LCS. 15 Results from these modeling studies demonstrated the importance of cross-boundary nutrient fluxes on primary production on the LCS, which suggested the importance of boundary concentrations when modeling hypoxia.…”

Section: ■ Introductionmentioning

confidence: 99%

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Modeling the Relative Importance of Nutrient and Carbon Loads, Boundary Fluxes, and Sediment Fluxes on Gulf of Mexico Hypoxia

Feist

Pauer

Melendez³

et al. 2016

Environ. Sci. Technol.

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The Louisiana continental shelf in the northern Gulf of Mexico experiences bottom water hypoxia in the summer. In this study, we applied a biogeochemical model that simulates dissolved oxygen concentrations on the shelf in response to varying riverine nutrient and organic carbon loads, boundary fluxes, and sediment fluxes. Five-year model simulations demonstrated that midsummer hypoxic areas were most sensitive to riverine nutrient loads and sediment oxygen demand from settled organic carbon. Hypoxic area predictions were also sensitive to nutrient and organic carbon fluxes from lateral boundaries. The predicted hypoxic area decreased with decreases in nutrient loads, but the extent of change was influenced by the method used to estimate model boundary concentrations. We demonstrated that modeling efforts to predict changes in hypoxic area on the continental shelf in relationship to changes in nutrients should include representative boundary nutrient and organic carbon concentrations and functions for estimating sediment oxygen demand that are linked to settled organic carbon derived from water-column primary production. On the basis of our model analyses using the most representative boundary concentrations, nutrient loads would need to be reduced by 69% to achieve the Gulf of Mexico Nutrient Task Force Action Plan target hypoxic area of 5000 km(2).

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Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Modeling the Relative Importance of Nutrient and Carbon Loads, Boundary Fluxes, and Sediment Fluxes on Gulf of Mexico Hypoxia

Feist

Pauer

Melendez³

et al. 2016

Environ. Sci. Technol.

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“…Bacteria play a key role in their contribution in the microbial loop, particularly in the recycling of dissolved organic matter (DOM) and provide a linkage between the higher trophic level and the dynamics of DOM (Pauer et al, 2014). In biogeochemical models studying dissolved organic matter (DOM) dynamics, various classes of organic matter, along with chemical elements and Plankton Functional Types (PFTs), have been incorporated.…”

Section: The Addition Of Several Classes Of Organic Matter and Bacteriamentioning

confidence: 99%

Applications of biogeochemical models in different marine environments: a review

Ismail,

Al-Shehhi

2023

Front. Environ. Sci.

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Marine biogeochemical models are an effective tool for formulating hypothesis and gaining mechanistic understanding of how an ecosystem functions. This paper presents a comprehensive review of biogeochemical models and explores their applications in different marine ecosystems. It also assesses their performance in reproducing key biogeochemical components, such as chlorophyll-a, nutrients, carbon, and oxygen cycles. The study focuses on four distinct zones: tropical, temperate, polar/subpolar, and high nutrient low chlorophyll (HNLC). Each zone exhibits unique physical and biogeochemical characteristics, which are defined and used to evaluate the models’ performance. While biogeochemical models have demonstrated the ability to simulate various ecosystem components, limitations and assumptions persist. Thus, this review addresses these limitations and discusses the challenges and future developments of biogeochemical models. Key areas for improvement involve incorporating missing components such as viruses, archaea, mixotrophs, refining parameterizations for nitrogen transformations, detritus representation, and considering the interactions of fish and zooplankton within the models.

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A modeling study examining the impact of nutrient boundaries on primary production on the Louisiana continental shelf

Pauer

Feist

Anstead

et al. 2016

Ecological Modelling

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Application of a one-dimensional model to explore the drivers and lability of carbon in the northern Gulf of Mexico

Cited by 4 publications

References 51 publications

Modeling the Relative Importance of Nutrient and Carbon Loads, Boundary Fluxes, and Sediment Fluxes on Gulf of Mexico Hypoxia

Modeling the Relative Importance of Nutrient and Carbon Loads, Boundary Fluxes, and Sediment Fluxes on Gulf of Mexico Hypoxia

Applications of biogeochemical models in different marine environments: a review

A modeling study examining the impact of nutrient boundaries on primary production on the Louisiana continental shelf

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