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Timmers, Molly A; Jury, Christopher P; Vicente, Jan; Bahr, Keisha D; Webb, M; Toonen, Robert J (2021): Seawater carbonate chemistry and biodiversity of coral reef cryptobiota [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.942812

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Abstract:
Ocean-warming and acidification are predicted to reduce coral reef biodiversity, but the combined effects of these stressors on overall biodiversity are largely unmeasured. Here, we examined the individual and combined effects of elevated temperature (+2 °C) and reduced pH (−0.2 units) on the biodiversity of coral reef communities that developed on standardized sampling units over a 2-y mesocosm experiment. Biodiversity and species composition were measured using amplicon sequencing libraries targeting the cytochrome oxidase I (COI) barcoding gene. Ocean-warming significantly increased species richness relative to present-day control conditions, whereas acidification significantly reduced richness. Contrary to expectations, species richness in the combined future ocean treatment with both warming and acidification was not significantly different from the present-day control treatment. Rather than the predicted collapse of biodiversity under the dual stressors, we find significant changes in the relative abundance but not in the occurrence of species, resulting in a shuffling of coral reef community structure among the highly species-rich cryptobenthic community. The ultimate outcome of altered community structure for coral reef ecosystems will depend on species-specific ecological functions and community interactions. Given that most species on coral reefs are members of the understudied cryptobenthos, holistic research on reef communities is needed to accurately predict diversity–function relationships and ecosystem responses to future climate conditions.
Keyword(s):
Benthos; Coast and continental shelf; Community composition and diversity; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; Laboratory experiment; North Pacific; Rocky-shore community; Temperature; Tropical
Supplement to:
Timmers, Molly A; Jury, Christopher P; Vicente, Jan; Bahr, Keisha D; Webb, M; Toonen, Robert J (2021): Biodiversity of coral reef cryptobiota shuffles but does not decline under the combined stressors of ocean warming and acidification. Proceedings of the National Academy of Sciences, 118(39), https://doi.org/10.1073/pnas.2103275118
Source:
Timmers, Molly A (2021): Cryptobiota_Climate_Change. https://github.com/CuriousFauna/Cryptobiota_Climate_Change
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
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 2022-03-30.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TypeTypeTimmers, Molly Astudy
2TreatmentTreatTimmers, Molly A
3IdentificationIDTimmers, Molly AARMS Unit
4IdentificationIDTimmers, Molly AMesocosm Name
5Number of sequencesSequence no#Timmers, Molly ARaw
6Number of sequencesSequence no#Timmers, Molly APost Filtration
7Number of sequencesSequence no#Timmers, Molly AMetazoa & Macroalgae
8Number of sequencesSequence no#Timmers, Molly AClassified to Phylum
9Number of sequencesSequence no#Timmers, Molly APost Rarefied
10Operational taxonomic unitOTU#Timmers, Molly ARaw
11Operational taxonomic unitOTU#Timmers, Molly APost Filtration
12Operational taxonomic unitOTU#Timmers, Molly AMetazoa & Macroalgae
13Operational taxonomic unitOTU#Timmers, Molly AClassified to Phylum
14Species richnessSTimmers, Molly Atotal
15PhylumPhylumTimmers, Molly A
16ReadsReads#Timmers, Molly Aphlya
17AbundanceAbundTimmers, Molly ARelative, phlya reads
18ProportionPropTimmers, Molly APhlya reads relative to Control
19Operational taxonomic unitOTU#Timmers, Molly A
20AbundanceAbundTimmers, Molly ARelative, MOTUs
21ProportionPropTimmers, Molly AMOTUs relative to Control
22SalinitySalTimmers, Molly A
23Salinity, standard deviationSal std dev±Timmers, Molly A
24Temperature, waterTemp°CTimmers, Molly A
25Temperature, water, standard deviationTemp std dev±Timmers, Molly A
26pHpHTimmers, Molly ASpectrophotometrictotal scale
27pH, standard deviationpH std dev±Timmers, Molly ASpectrophotometrictotal scale
28Alkalinity, totalATµmol/kgTimmers, Molly APotentiometric titration
29Alkalinity, total, standard deviationAT std dev±Timmers, Molly APotentiometric titration
30Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmTimmers, Molly ACalculated using CO2SYS
31Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Timmers, Molly ACalculated using CO2SYS
32Aragonite saturation stateOmega ArgTimmers, Molly ACalculated using CO2SYS
33Aragonite saturation state, standard deviationOmega Arg std dev±Timmers, Molly ACalculated using CO2SYS
34Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Carbon dioxide, standard deviationCO2 std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
37Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Fugacity of carbon dioxide in seawater, standard deviationfCO2 std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
39Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
41Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
42Bicarbonate ion, standard deviation[HCO3]- std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
43Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
44Carbonate ion, standard deviation[CO3]2- std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
45Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
46Carbon, inorganic, dissolved, standard deviationDIC std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
47Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
48Aragonite saturation state, standard deviationOmega Arg std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
49Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
50Calcite saturation state, standard deviationOmega Cal std dev±Yang, YanCalculated using seacarb after Orr et al. (2018)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2010 data points

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