Member Since 2008
HAOJIA Abby Ren
Professor, National Taiwan University
AGU Research
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Sea level change and nitrogen fixation dynamics in the Atlantic over glacial cycles
AGU 2024
biogeosciences | 13 december 2024
Alexandra Auderset, Francois Fripiat, Roger Creel,...
Low-latitude nitrogen fixation (N2 fixation) is essential for providing bioavailable nitrogen to the global ocean. Previous studies using foraminifera...
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Species-specific foraminifera-bound nitrogen isotopes as a proxy for symbiosis in fossil foraminifera: A case study using South Atlantic sediments
AGU 2024
paleoceanography and paleoclimatology | 12 december 2024
Alexandra Auderset, Sandi Smart, Yeongjun Ryu, dar...
Foraminifera engage in symbiotic relationships with photosynthetic algae, providing inorganic nutrients and a host environment in exchange for receivi...
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Development of OMZs in the East Tropical Pacific during the mid-late Miocene due to the CAS shoaling
AGU 2024
paleoceanography and paleoclimatology | 12 december 2024
Yan Zhang, Haojia A. Ren, Ana C. Ravelo, Wen-Hui C...
While the effects of Central American Seaway (CAS) closure on ocean circulation during the Miocene have been widely discussed in the literature, their...
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Increasing marine nitrogen fixation stabilized the ocean’s nitrogen-to-phosphorus ratio over the past six million years
AGU 2024
paleoceanography and paleoclimatology | 11 december 2024
Tianshu Kong, Haojia A. Ren, Ruixiang Zhai, Daniel...
In 1934, Redfield observed that the concentration ratio of dissolved nitrate to phosphate (N:P ratio) in the ocean matches the average ratio of nitrog...
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Sea Level Modulation of Atlantic Nitrogen Fixation Over Glacial Cycles
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
09 august 2024
Alexandra Auderset, Roger Creel, François Fripiat,...
N2 fixation in low‐latitude surface waters dominates the input of fixed nitrogen (N) to the global ocean, sustaining ocean fertility. In the ...
Millennial‐Scale Carbon Flux Variability in the Subantarctic Pacific During Marine Isotope Stage 3 (57–29 ka)
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
21 march 2024
Harris Anderson, Zanna Chase, Helen C. Bostock, Ta...
Antarctic ice cores reveal a glacial climate state during Marine Isotope Stage 3 (MIS‐3; 57–29 ka) punctuated by millennial‐...
Ice age iron fertilization increased phytoplankton nutrient consumption in the eastern equatorial Pacific
OCEAN SCIENCES 2024
ocean biology and biogeochemistry | 20 february 2024
Tianshu Kong, Jesse R. Farmer, Haojia A. Ren, Thom...
Iron fertilization in high-nutrient, low-chlorophyll (HNLC) ocean regions has been proposed as a means to boost phytoplankton productivity and increas...
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Review of proxies for low-oxygen paleo reconstructions
OXYGENATION DYNAMICS IN PAST CHANGING OCEANS II ORAL
paleoceanography and paleoclimatology | 13 december 2023
Babette Hoogakker, Catherine Davis, Alexandra Aude...
In step with the growing interest in modern and future ocean oxygen, there has been development of new paleo-oxygenation proxy methods, as well as a r...
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