Seasonal fluxes of phosphate and ammonium across the sediment-water interface in a shallow small estuary (Palmones River, southern Spain)

Clavero, Vicente; Izquierdo, Juan José; Fernández, José Antonio; Niell, F. Xavier

doi:10.3354/meps198051

Cited by 70 publications

(44 citation statements)

References 20 publications

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“…We thank one anonymous reviewer for their constructive comments that have improved the paper. (2000) Tagus Estuary Portugal 18-40 Percuoco et al (2015) Great Bay Estuary USA 50-1400 De Vittor et al (2012) Marano-Grado Lagoon Italy 52-900 Zhang et al (2013) Pearl River Estuary China 64-321 Vidal and Morgui (1995) Alfacs Bay Spain 100-600 Magni et al (2014) Shinkawa-Kasugawa Estuary Japan 200-500 Lohrer et al (2010) Mahurangi Estuary New Zealand 257-1542 Pérez- Villalona et al (2015) San Juan Bay Estuary Puerto Rico 461-572 Cook et al (2004) Huon Estuary Australia 500 Clavero et al (2000) Palmones River Estuary Spain 500-3500 Bally et al (2004) Seine Estuary France 1940 Gonçalves et al (2012) Santos-Cubatao Estuarine System Brazil 2495-4989 This study Application rate 150 g N m −2 Application rate 600 g N m −2 64-10,275 11-18,842…”

Section: Author Contribution Statementmentioning

confidence: 99%

In situ soft sediment nutrient enrichment: A unified approach to eutrophication field experiments

Douglas

Pilditch

Hines

et al. 2016

Marine Pollution Bulletin

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Adding fertiliser to sediments is an established way of studying the effects of eutrophication but a lack of consistent methodology, reporting on enrichment levels, or guidance on application rates precludes rigorous synthesis and meta-analysis. We developed a simple enrichment technique then applied it to 28 sites across an intertidal sandflat. Fertiliser application rates of 150 and 600 g N m −2 resulted in pore water ammonium concentrations respectively 1-110 and 4-580 × ambient, with greater elevations observed in deeper (5-7 cm) than surface (0-2 cm) sediments. These enrichment levels were similar to eutrophic estuaries and were maintained for at least seven weeks. The high between-site variability could be partially explained by the sedimentary environment and macrofaunal community (42%), but only at the high application rate. We suggest future enrichment studies should be conducted in situ across large environmental gradients to incorporate real world complexity and increase generality of conclusions.

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Section: Author Contribution Statementmentioning

confidence: 99%

In situ soft sediment nutrient enrichment: A unified approach to eutrophication field experiments

Douglas

Pilditch

Hines

et al. 2016

Marine Pollution Bulletin

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“…This system is characterized by waste and discharges it receives from industrial activity and adjacent urban areas. A number of studies of this system have characterized the amount and forms of the phosphorus in sediment and the phosphorus chemistry in the pore water (Clavero et al, 1991, Clavero et al, 2000, but have not dealt with the quantification of in situ benthic fluxes.…”

Section: Introductionmentioning

confidence: 99%

Accumulation of phosphorus in coastal marine sediments: relationship to benthic and diffusive fluxes

Ponce¹,

Ortega²,

Forja³

et al. 2010

Sci. Mar.

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SUMMARY: Sedimentary phosphorus was characterized in sediment cores from 3 coastal ecosystems of the Gulf of Cadiz. High spatial variability was observed in total phosphorus (from 445 to 20291 µg g.sed -1 ) and in the other phosphorus phases studied. This variability correlates with the proximity of the 10 sampling stations to sources of urban and/or industrial effluent in the zone. The benthic and diffusive fluxes were measured concurrently with sediment collection at these stations. The measured values of benthic fluxes range between -14 and 6 mmol m -2 d -1 . Generally, stations that showed increased interstitial phosphate concentrations with increasing depth were characterized by positive values in phosphate benthic fluxes and by high percentages of reactive forms of sedimentary phosphorus. Negative benthic fluxes were associated with stations receiving more anthropogenic matter, which showed progressively decreasing phosphate concentrations in the interstitial water with depth. In these anthropogenic areas, the non-reactive forms of phosphorus (those associated with ferric oxyhydroxide and authigenic carbonate fluorapatite) are abundant, and reach values exceeding 75% of total phosphorus in sediment.Keyworks: benthic fluxes, diffusive fluxes, phosphorus, sediment, Gulf of Cadiz, sequential extraction. RESUMEN: Acumulación de fósforo en sedimentos marinos costeros: relación con flujos bentónicos y difusivos. -Se ha realizado la caracterización del fósforo sedimentario en 3 ecosistemas costeros del Golfo de Cádiz. Se ha encontrado una alta variabilidad espacial (desde 445 hasta 20291 µg g.sed -1 ) en la cantidad de fósforo total, y en las otras fases de fósforo estudiadas. Esta variabilidad se correlaciona con la proximidad de las 10 estaciones de muestreo a las fuentes de efluentes urbanos e industriales de la zona. Los flujos difusivos y bentónicos fueron también medidos en las mismas estaciones de forma simultánea. Los valores de los flujos bentónicos están comprendidos entre -14 y 6 mmol m -2 d -1 . Generalmente, un incremento de la concentración de fosfato en el agua intersticial con la profundidad se notó en aquellas zonas en las que se encontraron valores positivos de los flujos y que presentan altos porcentajes de las formas reactivas de fósforo en el sedimento. Por otra parte, los flujos bentónicos negativos parecen estar asociados a las estaciones que reciben más material de origen antropogénico y están relacionados con la disminución progresiva de las concentraciones de fosfato en el agua intersticial. En esas áreas antropogénicas, las formas no reactivas del fósforo (asociadas a oxihidróxidos de hierro y a carbonato fluorapatito autigénico) son las más abundantes, y llegan a alcanzar valores que superan el 75% del fósforo total del sedimento.Palabras clave: flujos bentónicos, flujos difusivos, fósforo, sedimento, Golfo de Cádiz, extracción secuencial.

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“…Clavero et al 2000). Close benthic-pelagic interactions in shallow estuaries can often be detected for the main plant nutrients (N, P) during the annual season (e.g.…”

Section: Introductionmentioning

confidence: 99%

Phytoplankton diversity and photosynthetic acclimation along a longitudinal transect through a shallow estuary in summer

Schoor¹,

Selig²,

Geiss-Brunschweiger³

et al. 2008

Mar. Ecol. Prog. Ser.

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Seasonal fluxes of phosphate and ammonium across the sediment-water interface in a shallow small estuary (Palmones River, southern Spain)

Cited by 70 publications

References 20 publications

In situ soft sediment nutrient enrichment: A unified approach to eutrophication field experiments

In situ soft sediment nutrient enrichment: A unified approach to eutrophication field experiments

Accumulation of phosphorus in coastal marine sediments: relationship to benthic and diffusive fluxes

Phytoplankton diversity and photosynthetic acclimation along a longitudinal transect through a shallow estuary in summer

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