Sollai, Martina; Hopmans, Ellen C; Schouten, Stefan; Keil, Rick G; Sinninghe Damsté, Jaap S (2015): Nutrient concentration of SPM samples from the eastern tropical North Pacific [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.881432, Supplement to: Sollai, M et al. (2015): Intact polar lipids of Thaumarchaeota and anammox bacteria as indicators of N cycling in the eastern tropical North Pacific oxygen-deficient zone. Biogeosciences, 12(15), 4725-4737, https://doi.org/10.5194/bg-12-4725-2015
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Abstract:
In the last decade our understanding of the marine nitrogen cycle has improved considerably thanks to the discovery of two novel groups of microorganisms: ammonia- oxidizing archaea (AOA) and anaerobic ammonia-oxidizing (anammox) bacteria. Both groups are important in oxygendeficient zones (ODZs), where they substantially affect the marine N budget. These two groups of microbes are also well known for producing specific membrane lipids, which can be used as biomarkers to trace their presence in the environment. We investigated the occurrence and distribution of AOA and anammox bacteria in the water column of the eastern tropical North Pacific (ETNP) ODZ, one of the most prominent ODZs worldwide. Suspended particulate matter (SPM) was collected at different depths of thewater column in high resolution, at both a coastal and an open-ocean setting. The SPM was analyzed for AOA- and anammox bacteria-specific intact polar lipids (IPLs), i.e., hexose-phosphohexose (HPH)- crenarchaeol and phosphatidylcholine (PC)-monoether ladderane. Comparison with oxygen profiles reveals that both the microbial groups are able to thrive at low (<1µM) concentrations of oxygen. Our results indicate a clear niche segregation of AOA and anammox bacteria in the coastal waters of the ETNP but a partial overlap of the two niches of these microbial species in the open-water setting. The latter distribution suggests the potential for an interaction between the two microbial groups at the open-ocean site, although the nature of this hypothetical interaction (i.e., either competition or cooperation) remains unclear
Project(s):
Coverage:
Median Latitude: 18.379583 * Median Longitude: -106.528486 * South-bound Latitude: 16.516330 * West-bound Longitude: -107.149670 * North-bound Latitude: 20.241500 * East-bound Longitude: -105.986330
Minimum DEPTH, water: 15 m * Maximum DEPTH, water: 2500 m
Event(s):
TN278_106-WS * Latitude: 20.241500 * Longitude: -106.166670 * Location: Eastern Tropical North Pacific * Campaign: TN278 * Basis: Thomas G. Thompson * Method/Device: McLane Pump (McLP)
TN278_110-WS * Latitude: 20.141330 * Longitude: -105.986330 * Location: Eastern Tropical North Pacific * Campaign: TN278 * Basis: Thomas G. Thompson * Method/Device: McLane Pump (McLP)
TN278_114-WS * Latitude: 20.125670 * Longitude: -106.014000 * Location: Eastern Tropical North Pacific * Campaign: TN278 * Basis: Thomas G. Thompson * Method/Device: McLane Pump (McLP)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Sollai, Martina | |||
| 2 | Latitude of event | Latitude | Sollai, Martina | |||
| 3 | Longitude of event | Longitude | Sollai, Martina | |||
| 4 | DEPTH, water | Depth water | m | Sollai, Martina | Geocode | |
| 5 | Temperature, water | Temp | °C | Sollai, Martina | CTD | |
| 6 | Sample volume | Samp vol | l | Sollai, Martina | water filtered | |
| 7 | Oxygen | O2 | µmol/l | Sollai, Martina | ||
| 8 | Nitrate | [NO3]- | µmol/l | Sollai, Martina | ||
| 9 | Nitrite | [NO2]- | µmol/l | Sollai, Martina | ||
| 10 | Ammonium | [NH4]+ | µmol/l | Sollai, Martina |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
185 data points