Regulation of Nitrate Uptake by the Seagrass Zostera marina During Upwelling

Sandoval‐Gil, Jose Miguel; Ávila-López, María del Carmen; Camacho-Ibar, Víctor F.; Hernández-Ayón, José Martín; Zertuche-González, José A.; Cabello‐Pasini, Alejandro

doi:10.1007/s12237-019-00523-3

Cited by 14 publications

(7 citation statements)

References 48 publications

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“…The unidealistic TN removal performance was due to the limitation of denitrification resulting from the overall aerobic conditions. Although accumulated NO 3 -N could be partly removed by macrophyte uptake, residual NO 3 -N affected TN removal [16]. Higher macrophyte density and retention time enhanced TN removal in experimental units.…”

Section: Resultsmentioning

confidence: 92%

Effects of Macrophyte Species and Density on Algae Inhibition and Water Purification in Submerged Macrophyte Ponds

Ding¹,

Sun²,

Tang³

et al. 2020

Pol. J. Environ. Stud.

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Section: Resultsmentioning

confidence: 92%

Effects of Macrophyte Species and Density on Algae Inhibition and Water Purification in Submerged Macrophyte Ponds

Ding¹,

Sun²,

Tang³

et al. 2020

Pol. J. Environ. Stud.

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“…The diminished photosynthetic capabilities can thus restrict the potential for nitrate uptake in P. scouleri. This condition limits the utilization of this primary source of N fueled by upwellings in this region (Sandoval-Gil et al, 2019), as documented for other marine macrophytes affected by MHWs (Giant kelp, Sánchez-Barredo et al, 2020). Other works have reported the downregulation of genes related to nitrate uptake and assimilation (Pazzaglia et al, 2022b), and an alteration of the activity of nitrate assimilatory enzymes (Touchette & Burkholder, 2000) in seagrasses facing metabolic imbalances related to heat stress.…”

Section: Discussionmentioning

confidence: 84%

Marine heatwaves recurrence aggravates thermal stress in the surfgrass Phyllospadix scouleri

Vivanco-Bercovich,

Sandoval-Gil,

Bonet-Meliá

et al. 2024

Marine Pollution Bulletin

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“…4c-5c and S2c-S5c) can be due to local wind events as well as coast-wide processes such as storms and wind-driven coastal upwellings. A coastal upwelling index based on Ekman transport and upwelling favorable winds (Petrie et al, 1987) has shown strong coherence with the meteorological temperature band in eelgrass sites at the eastern Scotian Shelf (Krumhansl et al, 2021), which can transfer cool nutrient rich water to the surface and support eelgrass growth and photosynthesis during periods of nutrient limitation (Sandoval-Gil et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Modelling water temperature dynamics for eelgrass (Zostera marina) areas in the nearshore Scotian Shelf

Jabbari,

Wu,

Wong

et al. 2024

Preprint

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Water temperature is an important environmental factor for the growth of eelgrass (Zostera marina) beds, which provide important nearshore ecosystem services. Here, we study water temperature dynamics in eelgrass beds off the Atlantic coast of Nova Scotia using a highresolution nearshore oceanographic model based on the Finite Volume Community Ocean Model (FVCOM). The model has been evaluated against the observed temperature at six sites for three years from 2017-2019; the evaluation indicates that the model is able to replicate the temperature variation on time scales from hours to seasonal. We also use various temperature metrics relevant to eelgrass condition, including mean seasonal values and variability, daily ranges, growing degree day, and warm events, to both validate the model and better understand the temperature regime at the study sites. Our analyses showed that eelgrass inhabit a wide range of temperature conditions that have previously been shown to influence their performance. The mean water temperature during the summer growing period differs by more than 7°C between the shallowest and the deepest sites. The rate of heat accumulation was faster at shallow sites, and they experienced ≥ 12 extreme warm events year -1 . While the amplitude of the temperature variations within the high frequency band (<48 hr) was greater in shallower sites, temperature changes on meteorological time scales (48 hr to 60 days) were coherent at all sites suggesting the importance of coast-wide processes. The results of this study demonstrate that our high resolution numerical model can capture biologically relevant temperature dynamics at different time scales and over a large spatial region and yet still capture detailed temperature dynamics at specific nearshore sites. It therefore has the potential to contribute to conservation planning and prediction of eelgrass response to future climate changes.

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Regulation of Nitrate Uptake by the Seagrass Zostera marina During Upwelling

Cited by 14 publications

References 48 publications

Effects of Macrophyte Species and Density on Algae Inhibition and Water Purification in Submerged Macrophyte Ponds

Effects of Macrophyte Species and Density on Algae Inhibition and Water Purification in Submerged Macrophyte Ponds

Marine heatwaves recurrence aggravates thermal stress in the surfgrass Phyllospadix scouleri

Modelling water temperature dynamics for eelgrass (Zostera marina) areas in the nearshore Scotian Shelf

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