Biological Impact of Typhoon Wipha in the Coastal Area of Western Guangdong: A Comparative Field Observation Perspective

Lü, Xuan; Zhou, Xin; Jin, Guangzhe; Chen, Fajin; Zhang, Shuwen; Li, Zhiyang; Chen, Chunqing; Zhu, Qingmei; Lao, Qibin

doi:10.1029/2021jg006589

Cited by 20 publications

(40 citation statements)

References 87 publications

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“…ALOHA data are from Ferrón et al (2016). Seo et al 10.3389/fmars.2022.983748 decrease in DO concentrations due to organic matter decomposition after typhoons (Xu et al, 2019;Lu et al, 2022), the AOU decrease (~5 mmol kg -1 at surface; Figure S2) and no increase in DIN in the study area indicate minimal effect of organic matter either brought up from subsurface or produced in the surface layer.…”

Section: Effects Of Typhoons On Biogeochemistrymentioning

confidence: 78%

“…The difference in apparent oxygen utilization (AOU) between -1.9 to 2.7 mmol kg -1 for the surface layers of the outside and inside of the cyclonic eddy should result in 0.48 mmol L -1 higher DIN inside of the cyclonic eddy, assuming O 2 /N ratio of 9.5 (Anderson, 1995;Barone et al, 2022). Given virtually no difference in the DIN concentrations between inside and outside of the eddy (< 0.1 umol L -1 ), while the decomposition of organic matter is an important process responsible for the significant change of DO concentration in the coastal area with large amounts of organic matter (Lu et al, 2022), the process within the eddy was very limited and not likely the main cause of the decrease in DO concentration. Considering similarly low values observed on September 10 and 22, 2020 in the anticyclonic eddy, it is difficult to ascribe the small difference in DO concentration to the eddy.…”

Section: Effects Of Eddies On Biogeochemistrymentioning

confidence: 99%

“…Chen et al (2013) reported a 40% increase in particulate organic carbon flux after a Category 2 typhoon passed through the northwest Pacific (NWP) region. Additionally, the tropical cyclone can affect the biogeochemistry in the water column, such as particle decomposition with oxygen consumption (Zhou et al, 2021;Lu et al, 2022), development of hypoxia (Meng et al, 2022), and changing of phytoplankton size structure (Ma et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Insignificant effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific Ocean

et al. 2022

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We investigated the effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific by examining the distribution of nutrients, dissolved oxygen (DO), chlorophyll-a (Chl-a), gross primary production (GPP), dissolved organic carbon (DOC), and fluorescent dissolved organic matter (FDOM). Water samples were collected from anticyclonic and cyclonic eddies in September 2019 and 2020, and before and after the passage of a Category 2 typhoon in 2019. The study region was characterized by a deep nitracline (~150 m), which was deeper than both the pycnocline (~50 m) and the FDOM-depleted layer (~75 m). A subsurface chlorophyll maximum layer was observed at 100–150 m depth. No clear differences in Chl-a, DO, GPP, DOC, and FDOM were observed for the anticyclonic and cyclonic eddies, indicating that the eddies did not have a significant influence on biological production. Similarly, there were no discernable changes in Chl-a concentrations or other biogeochemical parameters after the passage of the typhoon, which induced water mixing to a depth of ~60 m. We conjecture that the nutrient-depleted layer was too deep for any eddy- or typhoon-induced vertical mixing to cause upwelling of nutrients to the euphotic zone. Our results imply that the disturbances caused by mesoscale processes in the upper layer of the highly oligotrophic northwest Pacific may have a smaller effect than in oceans in other parts of the world.

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Section: Effects Of Typhoons On Biogeochemistrymentioning

confidence: 78%

Section: Effects Of Eddies On Biogeochemistrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Insignificant effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific Ocean

et al. 2022

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“…Gyeongpoho and Hyangho, located adjacent to each other, have different ecological environments due to their hydrological characteristics (Park et al, 2020). However, there is no study on spatiotemporal variations in carbon and nitrogen dynamics of POM that could explain the ecosystem structure and function of the lagoons as a transition zone between ocean and land (Chen et al, 2021;Lu et al, 2022). The present study aimed to characterize the seasonal biogeochemical processes of POM in coastal lagoon systems in response to environmental variability using hydrological dynamics.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations in biochemical and stable isotope compositions of particulate organic matter in two contrasting temperate coastal lagoons of Korea

et al. 2022

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The geomorphology of coastal lagoons has an important effect on the hydrological balance between fresh water and seawater, which exhibit a wide range of salinity from nearly fresh water to hypersaline water. The present study aimed to characterize seasonal biogeochemical properties of suspended particulate organic matter (POM) in response to environmental variability driven by hydrological dynamics in contrasting coastal lagoon systems. We selected two lagoons distinguished by their geomorphological features, a permanently open artificial lagoon (Gyeongpoho) and an intermittently open natural lagoon (Hyangho), analyzed environmental characteristics, and compared the seasonal differences in the biochemical compositions of POM. Variations in temperature and precipitation in both lagoons showed the characteristics of a typical monsoon climate but variation in salinity differed 6.5−35.0 in Gyeongpoho and 1.1−10.8 in Hyangho. A self-organizing map analysis using the environmental data revealed that the spatiotemporal variations in salinity and nutrient concentrations differed significantly between the two lagoon systems, indicating a difference in hydrologic connectivity between lagoons and marine systems. Furthermore, a canonical correlation analysis highlighted that the POM properties differed according to physicochemical factors. The differing environmental conditions may affect the spatial and temporal variations in organic matter composition, resulting in significant differences in the biochemical composition of POM between two lagoon systems. Overall, this information provides insight into the origin and transport process of POM under changing coastal lagoon environments caused by climatic and human activities.

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“…Typhoons, known as hurricanes or tropical cyclones, are one of the most catastrophic synoptic events to influence oceans. As typhoons pass, they can cause sea surface temperature (SST) cooling and trigger phytoplankton bloom and primary productivity along its paths (Lin et al, 2003a;Lin et al, 2003b;Sun et al, 2015;Li et al, 2022;Lu et al, 2022). With global warming, the intensity and spatial coverage of typhoon activity have strengthened over the past several decades (Webster et al, 2005;Siswanto et al, 2007;Mei et al, 2015;Zhao et al, 2015;Mei and Xie, 2016;Walsh et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Impact of Typhoon on Coastal Upwelling Off The Eastern Hainan Island: A Case Study of Typhoon Rammasun (2014)

et al. 2022

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The Hainan Island coastal upwelling (HIU hereafter) off the eastern Hainan Island (EHI) is an important phenomenon in the northern South China Sea. Though this phenomenon has been extensively studied, the fast responses of its inner oceanic processes to typhoon passage remain unclear. Based on satellite data and a validated three-dimensional numerical model, the HIU response to the passage of Typhoon Rammasun (2014) are explored in this study. Impacted by Rammasun, the climbing of deep water off the EHI was depressed and the bottom cold water moved seaward for at least 10 km. Though the HIU was weakened, a cooling event and Chl-a bloom in the HIU were formed after the passage of Rammasun. Diagnostic analyses revealed that both advection and diffusion terms contributed to controlling the local rate of temperate change during the typhoon passage and the advection terms showed significant internal wave signals along the shelf break off southeastern Hainan Island. At the same time, strong near-inertial waves (NIWs) with 0.705 cpd were triggered in the HIU. The NIWs lasted for about two weeks and caused strong vertical mixing in the HIU after Rammasun. Overall, typhoon wind and NIWs combined to dominate temperature variation in the HIU during the typhoon period.

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Biological Impact of Typhoon Wipha in the Coastal Area of Western Guangdong: A Comparative Field Observation Perspective

Abstract: Typhoons (tropical storms or hurricanes) are among the most extreme weather events affecting open seas and coastal areas, and these storm systems play an important role in phytoplankton growth in oligotrophic oceanic waters, especially in tropical and subtropical zones (

Cited by 20 publications

References 87 publications

Insignificant effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific Ocean

Insignificant effects of eddies and typhoons on the biogeochemistry of the tropical northwest Pacific Ocean

Seasonal variations in biochemical and stable isotope compositions of particulate organic matter in two contrasting temperate coastal lagoons of Korea

Impact of Typhoon on Coastal Upwelling Off The Eastern Hainan Island: A Case Study of Typhoon Rammasun (2014)

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