Description: Ocean acidification (OA) is generally assumed to negatively impact calcification rates of marine organisms. At a local scale however, biological activity of macrophytes may generate pH fluctuations with rates of change that are orders of magnitude larger than the long-term trend predicted for the open ocean. These fluctuations may in turn impact benthic calcifiers in the vicinity. Combining laboratory, mesocosm and field studies, such interactions between OA, the brown alga Fucus vesiculosus, the sea grass Zostera marina and the blue mussel Mytilus edulis were investigated at spatial scales from decimetres to 100s of meters in the western Baltic. Macrophytes increased the overall mean pH of the habitat by up to 0.3 units relative to macrophyte- free, but otherwise similar, habitats and imposed diurnal pH fluctuations with amplitudes ranging from 0.3 to more than 1 pH unit. These amplitudes and their impact on mussel calcification tended to increase with increasing macrophyte biomass to bulk water ratio. At the laboratory and mesocosm scales, biogenic pH fluc- tuations allowed mussels to maintain calcification even under acidified conditions by shifting most of their calcification activity into the daytime when biogenic fluctuations caused by macrophyte activity offered temporal refuge from OA stress. In natural habitats with a low biomass to water body ratio, the impact of biogenic pH fluctuations on mean calcification rates of M. edulis was less pronounced. Thus, in dense algae or seagrass habitats, macrophytes may mitigate OA impact on mussel calcification by raising mean pH and providing temporal refuge from acidification stress.
Global identifier:
Doi(
"10.1594/PANGAEA.942326",
)
DataMeasurements(
DataMeasurements {
domain: Unspecified,
station: None,
measured_variables: [
"Alkalinity, total",
"Aragonite saturation state",
"Bicarbonate ion",
"Calcite saturation state",
"Carbon dioxide",
"Carbon, inorganic, dissolved",
"Carbonate ion",
"Carbonate system computation flag",
"Event label",
"Experiment",
"Fugacity of carbon dioxide (water) at sea surface temperature (wet air)",
"Identification",
"Net calcification rate of calcium carbonate",
"Oxygen",
"Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)",
"Phase",
"Registration number of species",
"Replicate",
"Salinity",
"Species",
"Temperature, water",
"Treatment",
"Treatment: partial pressure of carbon dioxide",
"Type",
"Uniform resource locator/link to reference",
"pH, NBS scale",
"pH, total scale",
],
methods: [
"Calculated using seacarb after Nisumaa et al. (2010)",
],
},
)
Comment: In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2022-3-14.
Origins: /Wissenschaft/PANGAEA
Tags: Calciumcarbonat ? Miesmuschel ? Muschel ? Meerestemperatur ? Makrophyten ? Meerwasser ? Weichtiere ? Makroalgen ? Gesamtkohlenstoff ? Habitat ? Kohlendioxid ? Kommunalabgabe ? Meeresorganismen ? Salzgehalt ? Ozeanversauerung ? Biologische Aktivität ? Algen ? Benthos ? Laborversuch ? Meeresgewässer ? Wasser ? Wasserkörper ? Nordatlantik ? Ressource ? Biomasse ? Versauerung ? Ostsee ? Benthic animals ? Fucus vesiculosus ? Ochrophyta ? Single species ? Species interaction ? Temperate ? Animalia ? Bottles or small containers/Aquaria (<20 L) ? Calcification/Dissolution ? Chromista ? Coast and continental shelf ?
Region: Kiel Fjord
Bounding boxes: 10.1786111° .. 10.1838° x 54.356111° .. 54.4466°
License: cc-by/4.0
Language: Englisch/English
Modified: 2022-12-15
Time ranges: 2012-10-17 - 2013-05-31
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