Responses of phytoplankton community to the input of different aerosols in the East China Sea

Chen, Y.; Wang, B.; W., Q.; Wang, F. J.

doi:10.1002/2016gl069068

Cited by 23 publications

(25 citation statements)

References 55 publications

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“…Overall, the addition of haze particle supplies a considerable amount of N nutrients to relieve and even reverse the nutrient limitation of phytoplankton community. Although we cannot exclude the possible stimulation effects of other species, such as Cu (Meng et al, ), our results suggest a dominant role of nitrogen in aerosol in affecting phytoplankton in the primarily N‐limited NWPO.…”

Section: Discussionmentioning

confidence: 65%

“…For instance, due to the river input and atmospheric deposition, the ECS is regarded as the area characterized by relatively high levels of Cu in the surface seawater. However, microcosm incubation experiments conducted in the ECS showed that Cu in the aerosol might play a more important role in stimulating primary productivity than N, likely due to the high biomass in the ECS (Meng et al, ). Hence, combined with the modeling and above experimental results, we conclude that the deposition of haze particles in natural condition tends to cause a fertilization rather than inhibition effect on primary productivity over the NWPO.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, nutrients in atmospheric deposition have the potential to stimulate phytoplankton growth in surface oceans (Boyd et al, 2007;Li et al, 2017;Liu et al, 2013). Many previous ship-borne incubation and mesocosm experiments showed stimulation effects on phytoplankton growth, either by directly providing nutrients or by enhancing nitrogen fixation after addition of aerosol samples, including Asian dust (Chu et al, 2018;Krom et al, 2016;Liu et al, 2013;Meng et al, 2016;Mills et al, 2004;Zhang et al, 2018). Previous studies including Duce et al (2008), Mahowald (2011), and Martino et al (2014) also calculated the additional uptake of carbon dioxide (and thus climate effect) due to the nitrogen fertilization effects.…”

Section: Introductionmentioning

confidence: 99%

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Fertilization of the Northwest Pacific Ocean by East Asia Air Pollutants

Zhang

Ito

Shi

et al. 2019

Global Biogeochemical Cycles

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Haze particles as a key air pollutant contain high level of toxins, which were hypothesized to inhibit phytoplankton growth when deposited to the ocean, and thus indirectly affect the climate. However, field observations have yet to provide conclusive evidence to confirm this hypothesis. Onboard microcosm experiments in the Northwest Pacific Ocean (NWPO) show that haze particles collected at the East Asia continent had an inhibition impact on phytoplankton growth only when at very high particle loading (2 mg/L). In contrast, haze particles at low and medium loadings (0.03–0.6 mg/L) stimulated phytoplankton growth and shifted phytoplankton size structure toward larger cells, primarily due to the supply of inorganic nitrogen nutrients from the particles. Model simulations showed that haze particle loading in NWPO surface seawater was usually more than an order of magnitude lower than 2 mg/L. This indicates that haze particles are unlikely to cause harm but to stimulate phytoplankton growth in the nitrogen‐limited NWPO. Ocean biogeochemical modeling further shows that deposited nitrogen significantly enhanced surface ocean chlorophyll a concentration in the winter and spring of 2014. Overall, these results demonstrate that haze particles stimulate rather than inhibit primary production in the NWPO.

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Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fertilization of the Northwest Pacific Ocean by East Asia Air Pollutants

Zhang

Ito

Shi

et al. 2019

Global Biogeochemical Cycles

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“…A few studies showed that dissolved N from the added dust likely stimulated phytoplankton growth in the Yellow Sea (YS; Liu et al, 2013). Added Fe instead of other dissolved nutrients from atmospheric deposition played an important role in stimulating phytoplankton growth in the East China Sea (Meng et al, 2016). The complex responses of phytoplankton growth to dust deposition are worthy of investigation.…”

Section: Zhang Et Al: Phytoplankton Growth Response To Asian Dustmentioning

confidence: 99%

“…Atmospheric aerosols characterized by mineral dust or anthropogenic pollutants contain complicated chemical components, and their deposition to oceans can lead to complicated responses of phytoplankton (C. Paytan et al, 2009;Meng et al, 2016). The NCEI appears to have the advantage of revealing the possible mechanisms associated with the responses to some extent.…”

Section: Positive Effects Of Am Dust On Phytoplankton Growth In the Nmentioning

confidence: 99%

Phytoplankton growth response to Asian dust addition in the northwest Pacific Ocean versus the Yellow Sea

et al. 2018

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Abstract. In this study, five on-board microcosm experiments were performed in the subtropical gyre, the Kuroshio Extension region of the northwest Pacific Ocean (NWPO), and the Yellow Sea (YS) in order to investigate phytoplankton growth following the addition of artificially modified mineral dust (AM dust) and various nutrients (nitrogen (N), phosphorus (P), iron (Fe), N + P, and N + P + Fe). The two experiments carried out with AM-dust addition in the subtropical gyre showed a maximum chlorophyll a (Chl a) concentration increase of 1.7-and 2.8-fold, while the cell abundance of large-sized phytoplankton (> 5 µm) showed a 1.8-and 3.9-fold increase, respectively, relative to the controls. However, in the Kuroshio Extension region and the YS, the increases in maximum Chl a and cell abundance of largesized phytoplankton following AM-dust addition were at most 1.3-fold and 1.7-fold larger than those in the controls, respectively. A net conversion efficiency index (NCEI) newly proposed in this study, size-fractionated Chl a, and the abundance of large-sized phytoplankton were analysed to determine which nutrients contribute to supporting phytoplankton growth. Our results demonstrate that a combination of nutrients, N-P or N + P + Fe, is responsible for phytoplankton growth in the subtropical gyre following AM-dust addition. Single nutrient addition, i.e., N in the Kuroshio Extension region and P or N in the YS, controls the phytoplankton growth following AM-dust addition. In the AM-dust-addition experiments, in which the increased N-P or P was identified to determine phytoplankton growth, the dissolved inorganic P from AM dust (8.6 nmol L −1 ) was much lower than the theoretically estimated minimum P demand (∼ 20 nmol L −1 ) for phytoplankton growth. These observations suggest that additional supply augments the bioavailable P stock in incubated seawater with AM-dust addition, most likely due to an enhanced solubility of P from AM dust or the remineralization of the dissolved organic P.

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Combined effects of iron and copper from atmospheric dry deposition on ocean productivity

Wang

Chen

Guo

et al. 2017

Geophysical Research Letters

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Atmospheric deposition can provide nutrients and potential toxicants to marine ecosystem, hence affecting ocean net primary productivity (NPP). Nonetheless, the interactive effects of mixed aerosol components on phytoplankton have rarely been reported. Here we explored the combined effects of iron (Fe) and copper (Cu) on NPP over the East China Sea. In aerosol addition mesocosm experiments, phytoplankton growth was suppressed under high aerosol Cu but was increased when high Cu was accompanied by high Fe in aerosols. A time series of soluble aerosol Fe and Cu deposition was obtained and compared to regional chlorophyll a (Chl a) abundances from Moderate Resolution Imaging Spectroradiometer/Aqua. Strong positive correlations were observed between the dry flux ratios of soluble Fe/Cu and Chl a abundances in the large offshore area, whereas these variables were uncoupled in coastal regions where riverine input and upwelling dominated the biogeochemistry. Current work provides insight into the complex linkage between atmospheric deposition and marine productivity.

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Responses of phytoplankton community to the input of different aerosols in the East China Sea

Cited by 23 publications

References 55 publications

Fertilization of the Northwest Pacific Ocean by East Asia Air Pollutants

Fertilization of the Northwest Pacific Ocean by East Asia Air Pollutants

Phytoplankton growth response to Asian dust addition in the northwest Pacific Ocean versus the Yellow Sea

Combined effects of iron and copper from atmospheric dry deposition on ocean productivity

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