Responses of Ulva prolifera to short-term nutrient enrichment under light and dark conditions

Sun, Kai-Ming; Li, Ruixiang; Li, Yan; Xin, Ming; Xiao, Jie; Wang, Zongling; Tang, Xuexi; Pang, Min

doi:10.1016/j.ecss.2015.03.018

Cited by 27 publications

(7 citation statements)

References 29 publications

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“…Furthermore, light provides energy to drive nutrient absorption by algae. Ulva prolifera was observed to have optimal ammonium absorption at a light level of 80 μM photons m −2 s −1 ; as the light level decreases, the nitrogen balance within the fronds is disrupted, leading to non-absorption and even excretion of ammonium [ 37 ]. Light intensity in the Yellow Sea varies between 60 and 140 μM photons m −2 s −1 during May to June, which can thus fully satisfy the growth of U. prolifera [ 9 ].…”

Section: Regional Factors For Macroalgal Bloomsmentioning

confidence: 99%

“…Remote sensing data show that the distribution of U. prolifera in surface waters appears as a linear band and is consistent with the main path of monsoons [ 40 ]. In the Jiangsu coastal area, the U. prolifera fronds that are scraped off the Porphyra mariculture rafts or the fragments mixed up from the bottom by upwelling are scattered throughout the surface water [ 9 , 37 ]. These fronds flow through the sand-ridge channels and out to the open sea with the residual tidal currents.…”

Section: Regional Factors For Macroalgal Bloomsmentioning

confidence: 99%

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Ulva prolifera green-tide outbreaks and their environmental impact in the Yellow Sea, China

Zhang

et al. 2019

National Science Review

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182

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The Ulva prolifera green tides in the Yellow Sea, China, which have been occurring since 2007, are a serious environmental problem attracting worldwide attention. Despite extensive research, the outbreak mechanisms have not been fully understood. Comprehensive analysis of anthropogenic and natural biotic and abiotic factors reveals that human activities, regional physicochemical conditions and algal physiological characteristics as well as ocean warming and biological interactions (with microorganism or other macroalgae) are closely related to the occurrence of green tides. Dynamics of these factors and their interactions could explain why green tides suddenly occurred in 2007 and decreased abruptly in 2017. Moreover, the consequence of green tides is serious. The decay of macroalgal biomass could result in hypoxia and acidification, possibly induce red tide and even have a long-lasting impact on coastal carbon cycles and the ecosystem. Accordingly, corresponding countermeasures have been proposed in our study for future reference in ecosystem management strategies and sustainable development policy.

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Section: Regional Factors For Macroalgal Bloomsmentioning

confidence: 99%

Section: Regional Factors For Macroalgal Bloomsmentioning

confidence: 99%

Ulva prolifera green-tide outbreaks and their environmental impact in the Yellow Sea, China

Zhang

et al. 2019

National Science Review

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182

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“…Reduced tillage is an inherent component of perennial cropping systems and can lead to reduced runoff and associated nutrient pollution (130). Residue management, however, is an important 11.…”

Section: Agroecological Effects Of Perennial Grain Crops Water Qualitmentioning

confidence: 99%

Perennial Grain and Oilseed Crops

Kantar

Tyl

Dorn³

et al. 2016

Annu. Rev. Plant Biol.

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Historically, agroecosystems have been designed to produce food. Modern societies now demand more from food systems-not only food, fuel, and fiber, but also a variety of ecosystem services. And although today's farming practices are producing unprecedented yields, they are also contributing to ecosystem problems such as soil erosion, greenhouse gas emissions, and water pollution. This review highlights the potential benefits of perennial grains and oilseeds and discusses recent progress in their development. Because of perennials' extended growing season and deep root systems, they may require less fertilizer, help prevent runoff, and be more drought tolerant than annuals. Their production is expected to reduce tillage, which could positively affect biodiversity. End-use possibilities involve food, feed, fuel, and nonfood bioproducts. Fostering multidisciplinary collaborations will be essential for the successful integration of perennials into commercial cropping and food-processing systems.

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“…These processes are of great importance for the biogeochemical cycle of coastal contaminants. The algae possess higher ratio of surface to volume and different functional groups including the carboxyl, hydroxyl and sulphate groups, which provides them with the potential of substantially removing pollutants such as nutrients (nitrogen and phosphorus) (Fan et al, 2014;Li et al, 2016;Luo et al, 2012;Sun et al, 2015) and metals (Sarı and Tuzen, 2008a) from seawater. In many previous studies, the fresh algae were often dried (Gao et al, 2018) and/or modified by ferric chloride (Son et al, 2018), sulfuric acid (Xiong et al, 2013) and formaldehyde (Yang and Chen, 2008) to improve the surface physico-chemical characteristics of algal biomass for reinforcing their sorption performance.…”

Section: G R a P H I C A L Abstractmentioning

confidence: 99%

Adsorptive removal of polycyclic aromatic hydrocarbons by detritus of green tide algae deposited in coastal sediment

Zhang

Lü

2019

Science of The Total Environment

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Editor: Filip M.G. Tack Rare information is available on the adsorptive removal of polycyclic aromatic hydrocarbons (PAHs) in the presence of algal detritus deposited in the coastal sediment during the outbreak of the green tide. The adsorptive removal of typical PAHs by Ulva prolifera (U. prolifera) detritus was firstly investigated since the algal detritus was of great importance for the biogeochemical cycle of coastal contaminants. The results showed that equilibrium adsorptive capacities of naphthalene, phenanthrene and benzo[a] pyrene on the U. prolifera detritus were 1.27, 1.97, and 2.49 mg kg −1 , respectively, at the initial concentration of 10 μg L −1 . The in situ monitoring using laser confocal scanning microscopy confirmed the adsorptive removal of PAHs by U. prolifera detritus. The adsorption of these PAHs was highly pH-dependent. The increase in salinity led to the increase in naphthalene removal rate, while the salinity showed scarce influence on the removal of phenanthrene and benzo[a] pyrene. There was a good linear relationship (R 2 ≥ 0.9892) between the removal efficiency of PAHs and the initial concentration of PAHs. Slow desorption kinetics and low desorption rate (b16%) indicated that the adsorptive removal of PAHs could be benign to the environment. These findings demonstrated that the occurrence of green tide could provide a new natural remediation approach for contamination of PAHs through the adsorptive removal by the detritus of green tidal algae deposited in the coastal sediment.

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Responses of Ulva prolifera to short-term nutrient enrichment under light and dark conditions

Cited by 27 publications

References 29 publications

Ulva prolifera green-tide outbreaks and their environmental impact in the Yellow Sea, China

Ulva prolifera green-tide outbreaks and their environmental impact in the Yellow Sea, China

Perennial Grain and Oilseed Crops

Adsorptive removal of polycyclic aromatic hydrocarbons by detritus of green tide algae deposited in coastal sediment

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