DOI: 10.1016/j.watres.2018.12.023
Scopus记录号: 2-s2.0-85059823921
论文题名: Effect of micronutrients on algae in different regions of Taihu, a large, spatially diverse, hypereutrophic lake
作者: Zhang X. ; Li B. ; Xu H. ; Wells M. ; Tefsen B. ; Qin B.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 500
结束页码: 514
语种: 英语
英文关键词: Copper
; Eutrophication
; Flow cytometry
; Harmful algal bloom
; Lake
; Micronutrient limitation
Scopus关键词: Algae control
; Binary alloys
; Boron
; Chemical analysis
; Chlorophyll
; Cobalt
; Copper
; Copper alloys
; Environmental management
; Eutrophication
; Flow cytometry
; Iron
; Iron alloys
; Lakes
; Nitrogen
; Phosphorus
; Phytoplankton
; Trace elements
; Chemical and biologicals
; Data-driven approach
; Harmful algal blooms
; Hypereutrophic lakes
; Micronutrient limitation
; Nitrogen and phosphorus
; Nutrient limitations
; Phytoplankton community
; Nutrients
; boron
; chlorophyll a
; cobalt
; copper
; cuprous ion
; iron
; molybdenum
; nitrogen
; phosphorus
; surface water
; trace element
; alga
; algal bloom
; anthropogenic effect
; biological analysis
; chlorophyll a
; community composition
; environmental management
; eutrophication
; flow cytometry
; lacustrine environment
; lake ecosystem
; nutrient limitation
; phytoplankton
; spatial variation
; trace element
; alga
; algal bloom
; algal growth
; Article
; bioassay
; biomass
; China
; controlled study
; diatom
; environmental management
; eutrophication
; flow cytometry
; green alga
; lake
; mesocosm
; Microcystis
; nonhuman
; Nostoc
; nutrient limitation
; phytoplankton
; priority journal
; summer
; turbidity
; water quality
; China
; Taihu Lake
; algae
英文摘要: Eutrophication or excessive nutrient richness is an impairment of many freshwater ecosystems and a prominent cause of harmful algal blooms. It is generally accepted that nitrogen and phosphorus nutrients are the primary causative factor, however, for systems subject to large anthropogenic perturbation, this may no longer be true, and the role of micronutrients is often overlooked. Here we report a study on Lake Tai (Taihu), a large, spatially diverse and hypereutrophic lake in China. We performed small-scale mesocosm nutrient limitation bioassays using boron, iron, cobalt, copper, molybdenum, nitrogen and phosphorus on phytoplankton communities sampled from different locations in Taihu to test the relative effects of micronutrients on in situ algal assemblages. In addition to commonly-used methods of chemical and biological analysis (including algal phytoplankton counting), we used flow cytometry coupled with data-driven analysis to monitor changes to algal assemblages. We found statistically significant effects of limitation or co-limitation for boron, cobalt, copper and iron. For copper at one location chlorophyll-a was over four times higher for amendment with copper, nitrogen and phosphorous than for the latter two alone. Since copper is often proposed as amendment for the environmental management of harmful algal blooms, this result is significant. We have three primary conclusions: first, the strong effects for Cu that we report here are mutually consistent across chlorophyll-a results, count data, and results determined from a data-driven approach to flow cytometry. Given that we cannot rule out a role for a Fe-Cu homeostatic link in causing these effects, future research into MNs and how they interact with N, P, and other MNs should be pursued to explore new interventions for effective management of HABs. Second, in view of the stimulatory effect that Cu exhibited, management of HABs with Cu as an algal biocide may not always be advisable. Third, our approach to flow cytometry offers data confirming our results from chemical and biological analysis, however also holds promise for future development as a high-throughput tool for use in understanding changes in algal assemblages. The results from this study concur with a small and emerging body of literature suggesting that the potential role of micronutrients in eutrophication requires further consideration in environmental management. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122030
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Biological Sciences, Xi'an Jiaotong-Liverpool University, Suzhou, Jiangsu 215123, China; Department of Environmental Science, University of Liverpool, Brownlow Hill, Liverpool, L69 7ZX, United Kingdom; Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Freshwater Ecology Group, National Institute of Water and Atmospheric Research, Dunedin, 9016, New Zealand
Recommended Citation:
Zhang X.,Li B.,Xu H.,et al. Effect of micronutrients on algae in different regions of Taihu, a large, spatially diverse, hypereutrophic lake[J]. Water Research,2019-01-01