Impact of elevated levels of CO2 on animal mediated ecosystem function: The modification of sediment nutrient fluxes by burrowing urchins

Widdicombe, Stephen; Beesley, A; Berge, J A; Dashfield, S L; McNeill, C L; Needham, H R; Øxnevad, S

Impact of elevated levels of CO2 on animal mediated ecosystem function: The modification of sediment nutrient fluxes by burrowing urchins

2013

A mesocosm experiment was conducted to quantify the relationships between the presence and body size of two burrowing heart urchins (Brissopsis lyrifera and Echinocardium cordatum) and rates of sediment nutrient flux. Furthermore, the impact of seawater acidification on these relationships was determined during this 40-day exposure experiment. Using carbon dioxide (CO2) gas, seawater was acidified to pHNBS 7.6, 7.2 or 6.8. Control treatments were maintained in natural seawater (pH = 8.0). Under normocapnic conditions, burrowing urchins were seen to reduce the sediment uptake of nitrite or nitrate whilst enhancing the release of silicate and phosphate. In acidified (hypercapnic) treatments, the biological control of biogeochemical cycles by urchins was significantly affected, probably through the combined impacts of high CO2 on nitrifying bacteria, benthic algae and urchin behaviour. This study highlights the importance of considering biological interactions when predicting the consequences of seawater acidification on ecosystem function.

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Palabras clave de AGROVOC

alkalinity ammonium animalia behaviour benthos carbon carbon dioxide echinodermata mass nitrate nitrite north atlantic ph phosphate salinity silicate size species status temperature water

Información bibliográfica

Editorial

PANGAEA

Otras materias

Nbs scale; Standard deviation; Flux; Total scale; Carbonate system computation flag; Aragonite saturation state; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Temperate; Bicarbonate ion; Coast and continental shelf; Single species; Ocean acidification international coordination centre; Brissopsis lyrifera; Potentiometric titration; Inorganic; Echinocardium cordatum; Oa-icc; Total; Calcite saturation state; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Treatment; Dissolved; Benthic animals; Bottles or small containers/aquaria (<20 l); Comment; Mortality/survival; Potentiometric; Calculated using seacarb after nisumaa et al. (2010); Laboratory experiment; Carbonate ion

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Inglés

Formato

text/tab-separated-values, 4040 data points

Licencia

CC-BY-3.0: Creative Commons Attribution 3.0 Unported, Access constraints: unrestricted, info:eu-repo/semantics/openAccess

Tipo

Dataset

Fuente

Supplement to: Widdicombe, Stephen; Beesley, A; Berge, J A; Dashfield, S L; McNeill, C L; Needham, H R; Øxnevad, S (2013): Impact of elevated levels of CO2 on animal mediated ecosystem function: The modification of sediment nutrient fluxes by burrowing urchins. Marine Pollution Bulletin, 73(2), 416-427, https://doi.org/10.1016/j.marpolbul.2012.11.008

En AGRIS desde: 2024-11-28

Fecha de modificación: 2024-11-28

Formato: Dublin Core

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Este registro bibliográfico ha sido proporcionado por Alfred Wegener Institute for Polar and Marine Research

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Enlaces

DOI DOI https://cran.r-project.org/package=seacarb

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