Abstract:
Measurements of benthic invertebrate particle reworking, bioirrigation, and associated nutrient concentrations used in the analyses by Solan et al. 2020 (see referenced publication) for shipboard incubations of replicate macrofaunal communities from the Western Barents Sea during summer 2017 and summer 2018. Samples were collected on cruises JR16006 and JR17007.
Funding was provided by 'The Changing Arctic Ocean Seafloor (ChAOS) - how changing sea ice conditions impact biological communities, biogeochemical processes and ecosystems' project (NE/N015894/1 and NE/P006426/1, 2017-2021), part of the NERC funded Changing Arctic Ocean programme.
Keywords:
bioirrigation, bioturbation, bioturbation coefficient, faunal activity, nutrient concentrations, particle reworking
Solan, M., Godbold, J., Grange, L., Ward, E., Wood, C., & Reed, A. (2020). Experimental measurements for replicate macrofaunal communities from the Western Barents Sea for summer 2017 and 2018 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/62a44c8d-5593-4d2c-93d9-5ddfebcbfc36
| Access Constraints: | No restrictions apply. |
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| Use Constraints: | This data is governed by the NERC data policy http://www.nerc.ac.uk/research/sites/data/policy/ and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2020-07-23 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Martin Solan |
| Role(s) | Investigator, Technical Contact |
| Organisation | University of Southampton |
| Name | Jasmin A Godbold |
| Role(s) | Investigator |
| Organisation | University of Southampton |
| Name | Laura J Grange |
| Role(s) | Investigator |
| Organisation | Bangor University |
| Name | Ellie R Ward |
| Role(s) | Investigator |
| Organisation | University of Southampton |
| Name | Christina L Wood |
| Role(s) | Investigator |
| Organisation | University of Southampton |
| Name | Adam J Reed |
| Role(s) | Investigator |
| Organisation | University of Southampton |
| Parent Dataset: | N/A |
| Reference: | Solan M, Ward ER, Wood CL, Reed AJ, Grange LJ, Godbold JA 2020. Climate driven benthic invertebrate activity and biogeochemical functioning across the Barents Sea Polar Front. Philosophical Transactions of the Royal Society A. | |
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| Quality: | Standard protocols were followed and data entry double checked by independent person. | |
| Lineage/Methodology: | Data were collected from each of 5 stations in 2017 (B13-B17) and 6 stations in 2018 (B13-B17 and Xs) during two consecutive cruises (RRS James Clark Ross: JR16006, 30th June to 8th August, 2017; JR17007: 10th July to 5th August, 2018) following a transect along the 30ºE meridian. At each station four replicate intact sediment cores (LWH: 20 x 20 x 12 cm) were obtained from replicate 0.1m2 USNL (Unites States Naval Laboratory) box cores using a core extruder, transferred to transparent acrylic aquaria (internal dimensions, LWH: 20 x 20 x 34 cm) and overlain with ~8 L (20cm depth) surface seawater (salinity, ~34). Aquaria (2017, n = 20; 2018, n = 24) were randomly transferred to one of two insulated fibreglass seawater baths (LWH: 1.2 x 1.2 x 0.8m, Tanks Direct, UK) and maintained at a representative ambient bottom temperature in the dark. Faunal mediated sediment particle reworking metrics were estimated after 12 days by establishing the redistribution of optically distinct particulate tracers (luminophores: 215g aquaria-1, fluorescent green, <200µm silica sand, density 2.35 kg dm-3; Glass Pebbles Ltd., UK). The ventilatory behavior of the infauna (bioirrigation) was estimated from absolute changes in the concentration (10mM, 8.231g NaBr dissolved in seawater aquarium-1) of the inert tracer sodium bromide (Delta [Br-], mg L-1; negative values indicate increased infaunal ventilatory activity) over an 8 h period on day 12, determined using a Tecator flow injection auto-analyser (FIA Star 5010 series). Accumulated water column concentrations (µmol L-1) of NH4-N, NOx-N (i.e. NO3-N + NO2-N) and PO4-P were determined after 12 days incubation from standardized samples (taken from the centre of each aquarium at ~5cm depth, 0.45 µm NALGENE filtered) following standard protocols using a Lachat Quikchem 8500 flow-injection auto-analyser. Full descriptions and additional information provided in Solan et al. 2020 Phil. Trans. R. Soc. A. in main manuscript and supplementary information. Resolution: Particle redistribution resolution 83 µm in 2017 and 74 µm in 2018. Nutrient concentrations to two decimal places |
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| Temporal Coverage: | |
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| Start Date | 2017-07-22 |
| End Date | 2017-08-01 |
| Start Date | 2018-07-19 |
| End Date | 2018-07-28 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | 74.49999 |
| Northernmost | 81.28249 |
| Longitude | |
| Westernmost | 29.23142 |
| Easternmost | 30.50174 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | 228 metres |
| Max Depth | 360 metres |
| Location: | |
| Location | Arctic |
| Detailed Location | Western Barents Sea |
| Data Collection: | Instrumentation: Canon 400D digital SLR camera Tecator flow injection auto-analyser (FIA Star 5010 series) Lachat Quikchem 8500 flow-injection auto-analyser |
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| Data Storage: | The data is 1x .CSV file Column headings: cruise: research cruise year: year of collection station: station reference (B13-B17, Xs) core: core number event: activity event number from cruise log site_num: site and replicate reference Lmean_cm: mean mixed depth in centimetres Lmed_cm: median mixed depth in centimetres Lmax_cm: maximum mixed depth in centimetres SBR_cm: surface boundary roughness in centimetres Db: bioturbation coefficient in cm2 year-1 dBr8_mgL: change in bromide concentration after 8 hours in mg L-1 on day 12 of the experiment NH4_d12_uM: concentration of aquarium water column NH4 in uM after 12 days PO4_d12_uM: concentration of aquarium water column PO4 in uM after 12 days SiO4_d12_uM: concentration of aquarium water column SiO4 in uM after 12 days NOx_d12_uM: concentration of aquarium water column NOx in uM after 12 days |
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