Zuozhu Wen
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View article: Localized nutrient colimitation of phytoplankton growth rates across the subtropical South Pacific Ocean
Localized nutrient colimitation of phytoplankton growth rates across the subtropical South Pacific Ocean Open
The simultaneous depletion of multiple nutrients in seawater potentially leads to colimitation of phytoplankton growth across large oceanic extents. Single limitation versus colimitation carries implications for mathematically predicting g…
View article: Significant contribution of the unicellular cyanobacterium UCYN-B to oceanic nitrogen fixation
Significant contribution of the unicellular cyanobacterium UCYN-B to oceanic nitrogen fixation Open
Dinitrogen (N2) fixation by diazotrophs forms a critical control on ocean productivity, yet our understanding of the distribution, abundance and activity of these microorganisms is informed by observations with limited geographical coverag…
View article: Eukaryotic phytoplankton drive a decrease in primary production in response to elevated CO <sub>2</sub> in the tropical and subtropical oceans
Eukaryotic phytoplankton drive a decrease in primary production in response to elevated CO <sub>2</sub> in the tropical and subtropical oceans Open
Ocean acidification caused by increasing anthropogenic CO 2 is expected to impact marine phytoplankton productivity, yet the extent and even direction of these changes are not well constrained. Here, we investigate the responses of phytopl…
View article: Diazotroph-derived nitrogen release and transfer under varying light intensity: insights from co-culture studies
Diazotroph-derived nitrogen release and transfer under varying light intensity: insights from co-culture studies Open
Biological dinitrogen (N 2 ) fixation is a major source of new N to surface seawater, sustaining ocean productivity. However, the fate of diazotroph-derived nitrogen (DDN), specifically its release and transfer, and the factors controlling…
View article: Patterns of (micro)nutrient limitation across the South Pacific Ocean
Patterns of (micro)nutrient limitation across the South Pacific Ocean Open
Nutrient limitation regulates phytoplankton growth throughout much of the global ocean and its assessment is important for our understanding of future changes in ocean productivity. The South Pacific Ocean represents a vast region where li…
View article: Effects of CO<sub>2</sub> on the Nitrogen Isotopic Composition of Marine Diazotrophic Cyanobacteria
Effects of CO<sub>2</sub> on the Nitrogen Isotopic Composition of Marine Diazotrophic Cyanobacteria Open
Biological N 2 fixation has been crucial for sustaining early life on Earth. Very negative δ 15 N values detected in Archean sediments, which are not observed in present‐day environments, have been attributed to the low efficiency of proto…
View article: Assessing <scp>N<sub>2</sub></scp> fixation flux and its controlling factors in the (sub)tropical western North Pacific through high‐resolution observations
Assessing <span>N<sub>2</sub></span> fixation flux and its controlling factors in the (sub)tropical western North Pacific through high‐resolution observations Open
The (sub)tropical western North Pacific is potentially an area of intense nitrogen (N 2 ) fixation in the global ocean, despite limited understanding of the flux and controlling factors. We conducted high‐resolution observations from 2016 …
View article: Effects of CO <sub>2</sub> on the nitrogen isotopic composition of Trichodesmium and Crocosphaera
Effects of CO <sub>2</sub> on the nitrogen isotopic composition of Trichodesmium and Crocosphaera Open
Biological nitrogen (N2) fixation is the main input of fixed nitrogen to ecosystems on Earth. Nitrogen isotope fractionation during this process is a key parameter for understanding the nitrogen cycle, however, relatively little is known a…
View article: N2 fixation in the (sub)tropical western North Pacific.xlsx
N2 fixation in the (sub)tropical western North Pacific.xlsx Open
The dataset includes high-density observations of N2 fixation rates in the (sub)tropical western North Pacific and the associated environmental parameters.
View article: Global oceanic diazotroph database version 2 and elevated estimate of global oceanic N <sub>2</sub> fixation
Global oceanic diazotroph database version 2 and elevated estimate of global oceanic N <sub>2</sub> fixation Open
Marine diazotrophs convert dinitrogen (N2) gas into bioavailable nitrogen (N), supporting life in the global ocean. In 2012, the first version of the global oceanic diazotroph database (version 1) was published. Here, we present an updated…
View article: Phytoplankton community response to episodic wet and dry aerosol deposition in the subtropical North Atlantic
Phytoplankton community response to episodic wet and dry aerosol deposition in the subtropical North Atlantic Open
Atmospheric aerosol deposition into the low latitude oligotrophic ocean is an important source of new nutrients for primary production. However, the resultant phytoplankton responses to aerosol deposition events, both in magnitude and chan…
View article: Upper Ocean Biogeochemistry of the Oligotrophic North Pacific Subtropical Gyre: From Nutrient Sources to Carbon Export
Upper Ocean Biogeochemistry of the Oligotrophic North Pacific Subtropical Gyre: From Nutrient Sources to Carbon Export Open
Subtropical gyres cover 26%–29% of the world's surface ocean and are conventionally regarded as ocean deserts due to their permanent stratification, depleted surface nutrients, and low biological productivity. Despite tremendous advances o…
View article: N2 fixation in the (sub)tropical western North Pacific.xlsx
N2 fixation in the (sub)tropical western North Pacific.xlsx Open
The dataset includes high-density observations of N2 fixation rates in the (sub)tropical western North Pacific and the associated environmental parameters.
View article: The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific
The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific Open
The availability of iron (Fe) and phosphorus (P) has been shown to be a key factor regulating rates of nitrogen fixation in the western subtropical Pacific. However, the relative importance of Fe and P at finer spatial scales between the n…
View article: Comment on bg-2022-155
Comment on bg-2022-155 Open
Abstract. The availability of iron (Fe) and phosphorus (P) has been shown to be a key factor regulating rates of nitrogen fixation in the western subtropical Pacific. However, the relative importance of Fe and P at finer spatial scales bet…
View article: The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific
The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific Open
The availability of iron (Fe) and phosphorus (P) have been shown to be key factors regulating rates of nitrogen fixation in the western Subtropical Pacific. However, their relative importance at finer spatial scales between the northern So…
View article: Supplementary material to "The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific"
Supplementary material to "The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific" Open
Supplementary Table 2. Pearson correlation coefficients (r) between paired variables including surface temperature (SST) and salinity (SSS), surface chlorophyll a concentration (Chl a), surface N2 fixation rate (SNF), depth-integrated N2 f…
View article: Exploring Variability of Trichodesmium Photophysiology Using Multi-Excitation Wavelength Fast Repetition Rate Fluorometry
Exploring Variability of Trichodesmium Photophysiology Using Multi-Excitation Wavelength Fast Repetition Rate Fluorometry Open
Fast repetition rate fluorometry (FRRf) allows for rapid non-destructive assessment of phytoplankton photophysiology in situ yet has rarely been applied to Trichodesmium. This gap reflects long-standing concerns that Trichodesmium (and oth…
View article: Nutrient regulation of biological nitrogen fixation across the tropical western North Pacific
Nutrient regulation of biological nitrogen fixation across the tropical western North Pacific Open
Nitrogen fixation is critical for the biological productivity of the ocean, but clear mechanistic controls on this process remain elusive. Here, we investigate the abundance, activity, and drivers of nitrogen-fixing diazotrophs across the …
View article: Nutrient co‐limitation in the subtropical Northwest Pacific
Nutrient co‐limitation in the subtropical Northwest Pacific Open
Nutrients limiting phytoplankton growth in the ocean are a critical control on ocean productivity and can underpin predicted responses to climate change. The extensive western subtropical North Pacific is assumed to be under strong nitroge…
View article: Biogeography of N<sub>2</sub> Fixation Influenced by the Western Boundary Current Intrusion in the South China Sea
Biogeography of N<sub>2</sub> Fixation Influenced by the Western Boundary Current Intrusion in the South China Sea Open
The N 2 fixation and primary production rates were measured simultaneously using 15 N 2 and 13 C incubation assays in the northern South China Sea influenced by the Kuroshio intrusion (KI) seasonally. The degree of KI (KI index, range from…
View article: Effect of light on N <sub>2</sub> fixation and net nitrogen release of <i>Trichodesmium</i> in a field study
Effect of light on N <sub>2</sub> fixation and net nitrogen release of <i>Trichodesmium</i> in a field study Open
Dinitrogen fixation (NF) by marine cyanobacteria is an important pathway to replenish the oceanic bioavailable nitrogen inventory. Light is the key to modulating NF; however, field studies investigating the light response curve (NF-I curve…
View article: Nitrogen fixation in two coastal upwelling regions of the Taiwan Strait
Nitrogen fixation in two coastal upwelling regions of the Taiwan Strait Open
Recent studies have demonstrated that dinitrogen fixation can be important in nutrient-rich coastal upwelling regions. During a cruise to the Taiwan Strait in summer 2015, we found that the nitrogen fixation rate in surface waters ranged f…
View article: The effect of light on N <sub>2</sub> fixation and net nitrogen release of field <i>Trichodesmium</i>
The effect of light on N <sub>2</sub> fixation and net nitrogen release of field <i>Trichodesmium</i> Open
Dinitrogen fixation (NF) by marine cyanobacteria is a crucial pathway to replenish the oceanic bioavailable nitrogen inventory. Light is the key to modulate NF, however, field studies regarding light response curve (NF-I curve) of NF rate …
View article: (Figures 2A, C-F) Separate effects of increasing pCO2 and decreasing pH on growth, N2-fixation, K1/2(DIC), cytosolic pH and NifH abundance of Trichodesmium erythraeum
(Figures 2A, C-F) Separate effects of increasing pCO2 and decreasing pH on growth, N2-fixation, K1/2(DIC), cytosolic pH and NifH abundance of Trichodesmium erythraeum Open
(Figures 2A, C-F) Separate effects of increasing pCO2 and decreasing pH on growth, N2-fixation, K1/2(DIC), cytosolic pH and NifH abundance of Trichodesmium erythraeum
View article: Growth rate, short-term N2 fixation rate, K1/2(DIC), cytosolic pH, and protein abundance of Trichodesmium IMS101, and diazotroph community composition, N2 fixation rate and nifH gene transcription of Trichodesmium spp. collected from NSCS surface water
Growth rate, short-term N2 fixation rate, K1/2(DIC), cytosolic pH, and protein abundance of Trichodesmium IMS101, and diazotroph community composition, N2 fixation rate and nifH gene transcription of Trichodesmium spp. collected from NSCS surface water Open
Acidification of seawater caused by anthropogenic carbon dioxide (CO2) is anticipated to influence the growth of dinitrogen (N2)-fixing phytoplankton, which contribute a large fraction of primary production in the tropical and subtropical …
View article: (Figure 1) The effect of ocean acidification on growth and short-term N2-fixation of Trichodesmium erythraeum
(Figure 1) The effect of ocean acidification on growth and short-term N2-fixation of Trichodesmium erythraeum Open
(Figure 1) The effect of ocean acidification on growth and short-term N2-fixation of Trichodesmium erythraeum