Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–6 of 6 results
Advanced filters: Author: Laetitia E. Pichevin Clear advanced filters

  • This study provides the longest annually resolved records of deoxygenation and productivity in the tropical Pacific and highlights the importance of North Atlantic climate oscillations on Pacific oxygen via its impact on the Pacific equatorial shallow overturning.

    • Laetitia E. Pichevin
    • Massimo Bollasina
    • Raja S. Ganeshram
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-11

  • It has been suggested that the delivery of dust-borne iron to the glacial ocean could have increased primary productivity and enhanced deep-sea carbon export in the Eastern Equatorial Pacific (EEP), lowering atmospheric carbon dioxide concentrations during glacial periods. But lower opal accumulation rates cast doubts on the importance of the EEP for glacial carbon dioxide drawdown. A silicon isotope record now provides support for an invigorated biological pump in this region during the last glacial period that could have contributed to glacial carbon dioxide drawdown.

    • L. E. Pichevin
    • B. C. Reynolds
    • R. M. Ellam
    Research
    Nature
    Volume: 459, P: 1114-1117

  • Marine sediments deposited beneath the eastern Pacific upwelling margin are a substantial sink for silica. The geochemistry of these sediments suggests that periods of intense upwelling result in iron limitation, which enhances the export of silica from the surface to the deep ocean and sediments.

    • L. E. Pichevin
    • R. S. Ganeshram
    • R. Hinton
    Research
    Nature Geoscience
    Volume: 7, P: 541-546

  • Using palaeohistology and geochemistry, the placental-like life history of a pantodont species 62 million years of age is determined.

    • Gregory F. Funston
    • Paige E. dePolo
    • Stephen L. Brusatte
    Research
    Nature
    Volume: 610, P: 107-111

  • The El Niño-Southern Oscillation is one of the largest sources of global climate variability, yet our understanding relative to the Topical Pacific mean state is poor. Here, geochemical analyses of marine plankton reveal a strong link between zonal sea-surface temperatures and ENSO variability.

    • Aleksey Yu Sadekov
    • Raja Ganeshram
    • Alexander W. Tudhope
    Research
    Nature Communications
    Volume: 4, P: 1-8

  • The marine nitrogen cycle was altered during the transition from glacial to interglacial conditions. An analysis of δ15N records throughout the world’s oceans suggests that rates of denitrification in the water column accelerated during the last deglaciation.

    • Eric D. Galbraith
    • Markus Kienast
    • Jin-Yu Terence Yang
    Research
    Nature Geoscience
    Volume: 6, P: 579-584