Couplings of Watersheds and Coastal Waters: Sources and Consequences of Nutrient Enrichment in Waquoit Bay, Massachusetts

Valiela, Iván; Foreman, K.; LaMontagne, Michael G.; Hersh, Douglas; Costa, Joseph E.; Peckol, P.; DeMeo-Andreson, Barbara; D’Avanzo, Charlene; Babione, Michele; Sham, Chi‐Ho; Brawley, John W.; Lajtha, Kate

doi:10.2307/1352389

Cited by 531 publications

(333 citation statements)

References 16 publications

Supporting

Mentioning

323

Contrasting

Unclassified

Order By: Relevance

“…Coastal aquifers worldwide, in particular in areas strongly influenced by human activities, are increasingly becoming contaminated with nutrients from fertilizer and waste-water (Valiela et al, 1992). Discharge of this groundwater along beaches and through the seafloor is now recognized as an important transport pathway of nutrients to coastal waters (e.g., Burnett et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Flow and nutrient dynamics in a subterranean estuary (Waquoit Bay, MA, USA): Field data and reactive transport modeling

Spiteri¹,

Slomp²,

Charette³

et al. 2008

Geochimica et Cosmochimica Acta

137

View full text Add to dashboard Cite

A two-dimensional (2D) reactive transport model is used to investigate the controls on nutrient (NO 3 À , NH 4 þ , PO 4 ) dynamics in a coastal aquifer. The model couples density-dependent flow to a reaction network which includes oxic degradation of organic matter, denitrification, iron oxide reduction, nitrification, Fe 2+ oxidation and sorption of PO 4 onto iron oxides. Porewater measurements from a well transect at Waquoit Bay, MA, USA indicate the presence of a reducing plume with high Fe 2+ , NH 4 þ , DOC (dissolved organic carbon) and PO 4 concentrations overlying a more oxidizing NO 3 À -rich plume. These two plumes travel nearly conservatively until they start to overlap in the intertidal coastal sediments prior to discharge into the bay. In this zone, the aeration of the surface beach sediments drives nitrification and allows the precipitation of iron oxide, which leads to the removal of PO 4 through sorption. Model simulations suggest that removal of NO 3 À through denitrification is inhibited by the limited overlap between the two freshwater plumes, as well as by the refractory nature of terrestrial DOC. Submarine groundwater discharge is a significant source of NO 3 À to the bay.

show abstract

Section: Introductionmentioning

confidence: 99%

Flow and nutrient dynamics in a subterranean estuary (Waquoit Bay, MA, USA): Field data and reactive transport modeling

Spiteri¹,

Slomp²,

Charette³

et al. 2008

Geochimica et Cosmochimica Acta

137

View full text Add to dashboard Cite

show abstract

“…However, with the current data on watercolumn nutrients we can at best speculate about the nitrogen metabolism dynamics and the implications of any alteration in the nutrient status in DL. When we consider that denitrification controls an important fraction of the biologically available nitrogen in shallow, semienclosed ecosystems (Koch et al, 1992), as well as entails a buffer complex against their eutrophication (Valiela et al, 1992), the previous knowledge gap emphasizes the relevance of addressing the rates and magnitude characterizing this biogeochemical process (i.e., denitrification) in DL under a management and conservation perspective.…”

Section: Medina-gó Mez and Herrera-silveira-phytoplankton Productivitmentioning

confidence: 99%

Seasonal Responses of Phyloplankton Productivity to Water-Quality Variations in a Coastal Karst Ecosystem of the Yucatan Peninsula

Medina-Gómez

Herrera-Silveira

2009

goms

View full text Add to dashboard Cite

“…Many of the individual papers published in Estuaries and Coasts during the period 1992-2005 have been highly influential on the field, judging by the number of citations they have received (Table 4). The most highly cited paper appearing in the journal over this interval was Professor Ivan Valiela and co-workers' paper (Valiela et al 1992) demonstrating the water quality linkages between estuaries and their watersheds using Waquoit Bay as an example system, which has been cited over 200 times. Eight of the ten most highly cited papers published during the evaluation period came from special issues, prominently volume 15, number 4, on "Couplings between watersheds and coastal waters" which produced four of the ten top-cited papers.…”

Section: -2002mentioning

confidence: 99%

Estuaries and Coasts as an Outlet for Research in Coastal Ecosystems: A Bibliometric Study

Fourqurean

Duarte

Kershaw

et al. 2008

Estuaries and Coasts

View full text Add to dashboard Cite

Recent changes in the editorial leadership, name, content, and publishing process for Estuaries and Coasts and looming changes in scientific publishing as technology advances have provided an opportunity to assess the health and examine the growth in size and reputation of the journal. Estuaries and Coasts has grown in size by about fourfold, with a concurrent decline in acceptance rate of about 1.5% per year to reach the present 65% acceptance rate.

show abstract

Couplings of Watersheds and Coastal Waters: Sources and Consequences of Nutrient Enrichment in Waquoit Bay, Massachusetts

Cited by 531 publications

References 16 publications

Flow and nutrient dynamics in a subterranean estuary (Waquoit Bay, MA, USA): Field data and reactive transport modeling

Flow and nutrient dynamics in a subterranean estuary (Waquoit Bay, MA, USA): Field data and reactive transport modeling

Seasonal Responses of Phyloplankton Productivity to Water-Quality Variations in a Coastal Karst Ecosystem of the Yucatan Peninsula

Estuaries and Coasts as an Outlet for Research in Coastal Ecosystems: A Bibliometric Study

Contact Info

Product

Resources

About