Productivity control of fine particle transport to equatorial Pacific sediment

Productivity Control of Fine Particle Transport to Equatorial Pacific Sediment

Equatorial Pacific productivity changes near the EoceneOligocene boundary

There is general agreement that productivity in high latitudes increased in the late Eocene and remained high in the early Oligocene. Evidence for both increased and decreased productivity across the Eocene-Oligocene transition (EOT) in the tropics has been presented, usually based on only one paleoproductivity proxy and often in sites with incomplete recovery of the EOT itself. A complete reco...

Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?

[1] The paleoceanographic recording fidelity of pelagic sediments is limited by chemical diagenesis and physical mixing (bioturbation and horizontal sediment transport). Diagenesis and bioturbation are relatively well-studied, but the effects of physical sedimentation have been largely ignored. Modeling U series isotopes (e.g., Th) can potentially quantify horizontal sediment movement, but mode...

Indonesian throughflow control of the eastern equatorial Pacific biogeochemistry

Productivity and fishing pressure drive variability in fish parasite assemblages of the Line Islands, equatorial Pacific.

Variability in primary productivity and fishing pressure can shape the abundance, species composition, and diversity of marine life. Though parasites comprise nearly half of marine species, their responses to these important forces remain little explored. We quantified parasite assemblages at two spatial scales, across a gradient in productivity and fishing pressure that spans six coral islands...