Hale, Rachel (2025): Effects of an experimental in situ seabed disturbance on deep-sea benthic ecosystem function and macro-infaunal community structure on the Chatham Rise, Southwest Pacific [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.975610
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Published: 2025-02-17 • DOI registered: 2025-02-17
Abstract:
We examined changes in environmental parameters following an experimental benthic disturbance using a modified plough (estimated 15 cm penetration) on the Chatham Rise (~450 m depth), Aotearoa/New Zealand. Sediment core retrievals were undertaken using an Oceans Instruments MC-800 multicorer fitted with six 70 cm long polycarbonate core tubes with 9.52 cm internal diameter that took place pre-disturbance on 16-17 June 2019 (voyage TAN1903), post-disturbance on 24-25 June 2019 (TAN1903) and one-year post-disturbance on 14-19 June 2020 (TAN2005). In order to determine any background changes in the larger surrounding area between years (2019, 2020), an additional reference site with similar hydrographic and sediment attributes (REF, depth = 455 m), located approximately 15 km to the north-west of the Butterknife (Figure 1B), was also sampled in the pre-disturbance period (n = 2, TAN1903) and one-year post-disturbance (n = 3, TAN2005). Measurements included sediment community oxygen consumption (SCOC), background nutrient (NH4, NOx, DRP) concentrations, nutrient fluxes, macro-infauna community composition (abundance, biomass, richness, diversity), sediment grain size (mean particle size, mud content, particle sorting, grain size skewness, grain size kurtosis), sediment chlorophyll a and phaeopigment content, sediment water content (H20), sediment total organic matter (TOM) content, and sediment particulate organic carbon (POC) and nitrogen (PN) content.
Supplement to:
Hale, Rachel; Leduc, Daniel; Murray, Campbell; Rowden, Ashley A; Nodder, Scott D; Eager, Chris; Stewart, Rob; Hickey, Chris W; Pilditch, Conrad A; Clark, Malcolm R (2025): Effects of an experimental in situ seabed disturbance on deep-sea benthic ecosystem function and macro-infaunal community structure on the Chatham Rise, Southwest Pacific. New Zealand Journal of Marine and Freshwater Research, https://doi.org/10.1080/00288330.2025.2461333
Funding:
Ministry of Business, Innovation and Employment (MBIE), grant/award no. CO1X1614: Resilience of benthic communities to the effects of sedimentation (ROBES), https://niwa.co.nz/oceans/sedimentation-effects
, Award: New Zealand Ministry of Business, Innovation and Employment Award
Coverage:
Median Latitude: -43.194763 * Median Longitude: 179.412274 * South-bound Latitude: -43.218000 * West-bound Longitude: 179.365400 * North-bound Latitude: -43.165400 * East-bound Longitude: 179.449810
Date/Time Start: 2019-06-13T23:45:00 * Date/Time End: 2020-06-18T17:50:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets
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Datasets listed in this bundled publication
- Hale, R (2025): Macro-infaunal community structure on the Chatham Rise, Southwest Pacific. https://doi.org/10.1594/PANGAEA.975705
- Hale, R (2025): Sediment disturbance experiment data with samples from the Chatham Rise, Southwest Pacific. https://doi.pangaea.de/10.1594/PANGAEA.975706
- Hale, R (2025): Sediment characteristics of samples from the Chatham Rise, Southwest Pacific. https://doi.org/10.1594/PANGAEA.975859