PXD030610-2

PXD030610 is an original dataset announced via ProteomeXchange.

Title	Climate sensitivity of Equatorial Pacific nutrient limitation
Description	Projected responses of ocean net primary productivity (NPP) to climate change are highly uncertain. The climate sensitivity of phytoplankton nutrient limitation in the low-latitude Pacific plays a crucial role, but field measurements are insufficient to provide suitable constraints. Here we quantify two decades of nutrient limitation in the Equatorial Pacific with satellite observations. Using field nutrient addition experiments, proteomics, and above-water hyperspectral radiometry, we demonstrate that physiological responses of phytoplankton to iron limitation led to ~3-fold increases in chlorophyll-normalized phytoplankton fluorescence. Extension to the >18-year satellite fluorescence record showed that Equatorial Pacific iron limitation was robust to changes in physical forcing through multiple El Niño–Southern Oscillation cycles, despite coherent fluctuations in limitation strength. In contrast, these iron limitation changes were overestimated 2-fold by a state-of-the-art climate model. Such synoptic constraints provide a powerful new approach for benchmarking the realism of model NPP projections to climate changes.
HostingRepository	PRIDE
AnnounceDate	2024-10-22
AnnouncementXML	Submission_2024-10-22_05:50:44.089.xml
DigitalObjectIdentifier	https://dx.doi.org/10.6019/PXD030610
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	Matthew McIlvin
SpeciesList	scientific name: marine plankton environmental sample; NCBI TaxID: 632957;
ModificationList	acetylated residue; iodoacetamide derivatized residue
Instrument	Orbitrap Fusion

Revision	Datetime	Status	ChangeLog Entry
0	2021-12-22 11:24:18	ID requested
1	2023-06-26 05:13:59	announced
⏵ 2	2024-10-22 05:50:44	announced	2024-10-22: Updated project metadata.

10.6019/PXD030610;

submitter keyword: metaproteomics, phytoplankton, chlorophyl, iron limitation, prochlorococcus, ocean

Mak Saito
contact affiliation	Marine Chemistry Geochemistry Woods Hole Oceanographic Institution Woods Hole, MA 02543 US
contact email	msaito@whoi.edu
lab head
Matthew McIlvin
contact affiliation	Woods Hole Oceanographic Inst.
contact email	mmcilvin@whoi.edu
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD030610
     1. Label: PRIDE project
     2. Name: Climate sensitivity of Equatorial Pacific nutrient limitation