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Factors regulating population dynamics of the amphipod Ampithoe valida in a eutrophic subtropical coastal lagoon

Acta Oceanologica Sinica 2013年第6期32卷 56-65页

作者： zheng xinqing HUANG Lingfeng HUANG Bangqin LIN Yongqing Third Institute of Oceanography State Oceanic Administration Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems Xiamen University

Year-round investigations were carried out to address the population dynamics of amphipod Ampithoe val- ida and its potential regulating factors in the Yundang Lagoon （a eutrophic subtropical coastal lagoon in Xiamen City, China） from October 2007 to October 2008. The results show that A. valida population was largely composed of juveniles and reached a peak abundance （12.02× 10^3 ind./m2） in March, but sharply shrunk in July. The monthly variation pattern ofA. valida seemed to follow that of Ulva lactuca which is the main food resource for A. valida, indicating a strong influence of food availability on A. valida popu- lation dynamics. Life cycle studies in laboratory indicate that A. valida adopted an r-selected life strategy, e.g., rapid growth rate （0.216-0.302 mm/d）, consecutive breeding （4-10 times）, short reproductive rhythm （9-17 d） and huge fecundity （24-192 eggs or 6-94 juveniles per brood）, which contributed to the fast pop- ulation growth ofA. valida from January to March. Although temperature may also be a significant cause, A. valida could grow quickly and show normal reproductive traits （i.e., the timing of sexual differentiation or maturity, the reproductive rhythm, the number of broods all through its lifespan and offspring produc- tion） in temperature between 15-30~ C. Therefore, the temperature variation in the lagoon water should not account for the sharp variation of A. valida population by affecting the survival, growth and reproduction of the amphipod. However, negative correlation between water temperature and U. lactuca biomass in the lagoon suggested that temperature could have indirectly affected the population dynamics ofA. ualida by affecting its food availability. The authors conclude that, in the Yundang Lagoon, the population dynamics ofA. validawas mainly controlled by the food availability rather than water temperature.

关键词： Ampithoe valida population dynamics food availability Ulva lactuca the Yundang Lagoon

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Amphipods fail to suppress the accumulation of Ulva lactuca biomass in eutrophic Yundang Lagoon

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Acta Oceanologica Sinica 2014年第12期33卷 155-162页

作者： zheng xinqing HUANG Lingfeng WANG Qian LIN Rongcheng Third Institute of Oceanography State Oceanic Administration Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems Xiamen University College of the Environment and Ecology Xiamen University China Ocean Press

The Gross growth efficiency （GGE） is defined as the amount of consumer carbon produced relative to the amount of prey ingested in a given time interval. In population ecology, it can be considered as an index for the ability of a consumer to convert the biomass of food into its population production. In this study, it was firstly applied to estimate the role of amphipods grazing in the biomass dynamics of macroalgae （Ulva lactuca） in Yundang Lagoon （a subtropical eutrophic coastal lagoon, Xiamen City, China）. It was found that amphipods were the dominant group （82.2%-98.7%） in the benthic assemblage, in which five amphipod species （Corophium uenoi, Ampithoe valida, Grandidierella japonica, Grammaropsis laevipalmata andCa-prella panantis） were observed in the lagoon. However, onlyA. valida significantly consumedU. lactuca among these amphipod species. A series of experiments were conducted to estimate the consumption of U. lactuca byA. valida. It was suggested that the monthly secondary production （P） ofA. valida using size frequency method ranged from 2.39 to 13.68 g/***. valida exponentially reduced with body size and was closely associated with water temperature. Therefore,GGE equation for different months using the temperature recorded during the field investigation was fitted. The monthly consumption ofU. lactuca was figured out to be 86.7-1 549.0 g/m2 by the sum of consumption （P/GGE） byA. valida at different size, ac-counting for 2.0%-37.5% ofU. lactucaproduction. It indicates that the grazing effect ofA. valida did play a role in reducingthe accumulation ofU. lactucabiomass whenA. valida was abundant, but it finally fails to limit the U. lactucagrowth in Yundang Lagoon. Low abundance of A. valida and high nutrient loading may be two major reasons for the outbreak ofU. lactuca bloom in the lagoon.

关键词： amphipods Ampithoe valida consumption gross growth efficiency secondary production,Ulva lactuca

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Performance of ecological restoration in an impaired coral reef in the Wuzhizhou Island, Sanya, China

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Journal of Oceanology and Limnology 2021年第1期39卷 135-147页

作者： xinqing zheng Yuanchao LI Jilin LIANG Rongcheng LIN Daoru WANG Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China Hainan Academy of Ocean and Fisheries Science Haikou 570125China Fujian Provincial Station for Field Observation and Research of Island and Costal Zone in Zhangzhou Xiamen 361005China Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration Xiamen 361005China

Coral restoration is becoming popular to help restoring degraded coral ***,few studies have tried to monitor the long-term recovery of coral reefs,which makes it diffi cult to assess the performance of the *** monitored the growth of three transplanted Acropora corals and naturally-attached Pocillopora damicornis on artifi cial reefs(ARs)from October 2014 to September 2018 during which there were several attacks of *** show that two staghorn Acropora species had the highest growth rates(11.0–12.1 cm/a),followed by table coral ***(5.6 cm/a)and ***(4.8 cm/a).A linear growth pattern was found for the three Acropora species;the pattern gradually slowed in *** was a strong interspecifi c competition for space among the corals on ARs,and it led to the sharply declined occurrence of slow-growing *** colonies in *** recovery was successful at the Wuzhizhou Island and quickly increased AR ***,the ARs made of metal frames fail to resist the direct attack from a catastrophic ***,concrete and environmentalfriendly materials should be used in future *** study is the fi rst report on long-term monitoring and assessment of coral reef restoration in *** results off er future guide of reef restoration for impaired coral reefs in regions easily aff ected by typhoons.

关键词： coral restoration artifi cial reefs coral transplantation Acropora Pocillopora damicornis

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An ocean acidification-simulated system and its application in coral physiological studies

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Acta Oceanologica Sinica 2018年第12期37卷 55-62页

作者： zheng xinqing WANG Chenying HADI Tri Aryono YE Youyin PAN Ke Third Institute of Oceanography Ministry of Natural Resources Research Center for Oceanography Indonesian Institute of Sciences Institute for Advanced Study Shenzhen University

Due to the elevated atmospheric carbon dioxide, ocean acidification(OA) has recently emerged as a research theme in marine biology due to an expected deleterious effect of altered seawater chemistry on calcification. A system simulating future OA scenario is crucial for OA-related studies. Here, we designed an OA-simulated system(OASys) with three solenoid-controlled CO_2 gas channels. The OASys can adjust the pH of the seawater by bubbling CO_2 gas into seawaters via feedback systems. The OASys is very simple in structure with an integrated design and is new-user friendly with the instruction. Moreover, the OASys can monitor and record real-time pH values and can maintain pH levels within 0.02 pH unit. In a 15-d experiment, the OASys was applied to simulate OA in which the expected target pH values were 8.00, 7.80 and 7.60 to study the calcifying response of Galaxea fascicularis. The results showed daily mean seawater pH values held at pH 8.00±0.01, 7.80±0.01 and 7.61±0.01 over15 d. Correspondingly, the coral calcification of G. fascicularis gradually decreased with reduced pH.

关键词： ocean acidification OASys coral Galaxea fascicularis

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Effects of live rock on removal of dissolved inorganic nitrogen in coral aquaria

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Acta Oceanologica Sinica 2017年第12期36卷 87-94页

作者： LI Yan zheng xinqing YANG Xiaozhou OU Dangyun LIN Rongcheng LIU Xinming The Third Institute of Oceanography State Oceanic AdministrationXiamen 361005China College of Environment and Ecology Xiamen UniversityXiamen 361102China Guangxi Academy of Oceanography Nanning 530022China

Maintaining stable water quality is one of the key processes for recirculating coral aquaculture. Traditional aquarium systems which mainly utilized a nitrification of nitrifying bacteria attached to the surface of massive artificial filter material are difficult to maintain the oligotrophic conditions necessary for coral aquaculture. This study investigated the removal effects of dissolved inorganic nitrogen（ammonia and nitrate） by live rock（LR）, a key component in the ＂Berlin system＂ coral aquarium. The expression levels of bacterial functional genes, AOA3,amo A and nos Z, were measured on the exterior and interior of LR. The nitrifying and denitrifying bacterial abundance on LR was quantified and the nitrogen nutrient regulatory effects of LR were evaluated. The results demonstrated that LR mainly removed ammonium（NH_4~＋） from the water with a mean efficiency of 0.141 mg/（kg·h）, while the removal of nitrate（NO_3~–） was not significant. Bacterial diversity analysis showed that ammonia-oxidizing bacteria（AOB） were the most common bacteria on LR, which accounted for 0.5%–1.4% of the total bacterial population, followed by denitrifying bacteria, which accounted for 0.2% of the total population, and the ammonia-oxidizing archaea（AOA） were the least common type（〈0.01%）. The low abundance of denitrifying bacteria may be responsible for the poor nitrate（NO_3~–） removal of LR. Thus, other biological filtration methods are needed in coral aquaria to control nitrates generated from nitrification or biological metabolism.

关键词： coral live rock water purification dissolved inorganic nitrogen removal efficiency

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Size structure of biomass and primary production of phytoplankton：environmental impact analysis in the Dongsha natural gas hydrate zone, northern South China Sea

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Acta Oceanologica Sinica 2018年第1期37卷 97-107页

作者： KANG Jianhua LIANG Qianyong WANG Jianjun LIN Yili HE Xuebao XIA Zhen zheng xinqing WANG Yu Third Institute of Oceanography State Oceanic Administration Xiamen 361005 China Guangzhou Marine Geological Survey China Geological Survey Guangzhou 510760 China

The size-fractionated biomass and primary production of phytoplankton, and the influence of environmental factors on it were studied in the Dongsha natural gas hydrate zone of the northern South China Sea in May *** nutrient, low chlorophyll a（Chl a） and primary productivity characteristics were found in these waters. The phenomena of subsurface Chl a maximum layers（SCMLs） and primary production maximum layers（SPMLs）were observed in the Dongsha waters. There were significant differences in the size-fractionated biomass and primary production that showed picophytoplankton〉nanophytoplankton〉microphytoplankton in terms of biomass and degree of contribution to production. Vertical biomass distribution indicated there were considerable differences among different phytoplankton within the euphotic zone（Zeu） in spring. For example,microphytoplankton was distributed evenly in the euphotic layer and nanophytoplankton was mainly distributed in the subsurface or in the middle of the euphotic layer, while picophytoplankton was mainly distributed in the middle or bottom of the euphotic layer. Smaller cell size and larger relative surface area allow picophytoplankton to benefit from nutrient competition and to hold a dominant position in the tropical oligotrophic waters of low latitudes. There was a positive correlation between size-fractionated biomass and temperature with pH and a negative correlation between size-fractionated biomass and silicate with phosphate. There was a positive correlation between size-fractionated primary production and temperature and a negative correlation between size-fractionated biomass and salinity with phosphate. Phosphate was an important factor influencing the size structure of phytoplankton. Meanwhile, irradiation and the euphotic layer were more important in regulating the vertical distribution of size-fractionated phytoplankton in the Dongsha natural gas hydrate zone.

关键词： phytoplankton biomass primary production size fractionation gas hydrate northern South China Sea

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Linking coral fluorescence phenotypes to thermal bleaching in the reef-building Galaxea fascicularis from the northern South China Sea

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Marine Life Science & Technology 2024年第1期6卷 155-167页

作者： Sanqiang Gong Jiayuan Liang Gang Li Lijia Xu Yehui Tan xinqing zheng Xuejie Jin Kefu Yu Xiaomin Xia Key Laboratory of Tropical Marine Bio-Resources and Ecology&Guangdong Provincial Key Laboratory of Applied Marine Biology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 510301China Coral Reef Research Center of China Guangxi UniversityNanning 53004China South China Institute of Environmental Sciences The Ministry of Ecology and Environment of PRCGuangzhou 510530China Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China

Coral fluorescence phenotypes have been suggested as an adaptation to a broad range of environmental conditions,yet the mechanisms linking thermal bleaching tolerance in reef-building coral populations,associated with fluorescence phenotypes due to GFP-like proteins,remains *** this study,the relationship between the thermal sensitivity and phenotypic plasticity of corals was investigated using two phenotypes of Galaxea fascicularis,green and *** results reveal that brown *** was more susceptible to bleaching than green *** when exposed to a higher growth temperature of 32℃.Both phenotypes of *** were associated with the thermotolerant Symbiodiniaceae symbiont,Durusdinium ***,the brown *** showed a significant decrease in Symbiodiniaceae cell density and a significant increase in pathogenic bacteria abundance when the growth temperature was raised from 29 to 32℃.The physiological traits and transcriptomic profiles of Symbiodiniaceae were not notably affected,but there were differences in the transcriptional levels of certain genes between the two phenotype hosts of *** heat stress of 32℃,the gene encoding green fluorescent protein(GFP)-like and chromosome-associated proteins,as well as genes related to oxidative phosphorylation,cell growth and death showed lower transcriptional levels in the brown *** compared to the green ***,the results demonstrate that the green form of *** is better able to tolerate ocean warming and defend against pathogenic bacteria,likely due to higher gene transcription levels and defense ability.

关键词： Fluorescence phenotype Thermal bleaching Microbiome Galaxea fascicularis Ocean warming

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Seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat functions

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Ecosystem Health and Sustainability 2020年第1期6卷 533-540,532页

作者： Jianguo Du Wenjia Hu Ivan Nagelkerken Laddawan Sangsawang Kar Hoe Loh Jillian Lean-Sim Ooi Jianji Liao xinqing zheng Shuting Qiu Bin Chen Third Institute of Oceanography Ministry of Natural ResourcesXiamenChina Fujian Provincial Key Laboratory of Marine Ecological Conservation and Restoration XiamenChina School of Biological Sciences and the Environment Institute The University of AdelaideAdelaideAustralia Eastern Gulf of Thailand Marine and Coastal Resources Research and Development CenterRayongThailand Institute of Ocean and Earth Sciences University of MalayaKuala LumpurMalaysia Department of Geography Faculty of Arts and Social SciencesUniversity of MalayaKuala LumpurMalaysia

Tropical seagrass meadows and coral reefs often function as interconnected marine habitats,but they are often studied and managed as homogenous *** macrohabitats,seagrass meadows provide important benefits to adjacent reef ecosystems by acting as natural filters of sediments and nutrients,and by providing critical feeding,nursery,and refuge habitats for reef fishes and other *** the macrohabitat functions of seagrass meadows have been often acknowledged,their microhabitats functions have largely been *** purpose of the study is to explore how seagrass meadows provide multiple benefits to adjacent coral reefs through various microhabitat *** paper reveals some of the diversity of microhabitats that seagrass meadows contain,such as macroalgal mats,rubble cavities,sand patches with sparse seagrass,anemone gardens,hard substratum,and sponges mixed with *** highlight the ways in which reef creatures have diversified and specialized in using these different microhabitats,and postulate that seagrass microhabitat diversity enhances the habitat function and faunal diversity of seagrass meadows.

关键词： Coastal ecosystems habitat function connectivity marine biodiversity

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试论图书馆文献评价

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国家图书馆学刊 2005年第4期14卷 36-41页

作者：郑心清新加坡国家图书馆

图书馆文献资源的评价,包括馆藏资源评价和网上资源评价两方面内容。这对加强图书馆的文献资源建设和读者工作,加强当代图书馆的服务功能,非常重要。本文讨论馆藏资源和网上资源评价的内容、要素、评价方法、评价步骤等等。参考文献11。

关键词：文献资源建设馆藏建设馆藏政策馆藏评价网上资源评价当代图书馆文献评价资源评价馆藏资源读者工作

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珊瑚礁：减缓气候变化的潜在蓝色碳汇

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中国科学院院刊 2021年第3期36卷 270-278页

作者：石拓郑新庆张涵王啟芳钟昕山东大学海洋研究院自然资源部第三海洋研究所福建省海洋生态保护与修复重点实验室自然资源部海峡西岸海岛海岸带生态系统野外科学观测研究站

珊瑚礁是生产力水平最高,同时也是最脆弱的海洋生态系统之一。由气候变化及人类活动导致的珊瑚礁全球衰退,已经影响到珊瑚礁的钙化和碳循环过程,也加大了长期悬而未决的珊瑚礁二氧化碳(CO)"源-汇"争议。尽管珊瑚礁的钙化过程伴随CO释放... 详细信息

珊瑚礁是生产力水平最高,同时也是最脆弱的海洋生态系统之一。由气候变化及人类活动导致的珊瑚礁全球衰退,已经影响到珊瑚礁的钙化和碳循环过程,也加大了长期悬而未决的珊瑚礁二氧化碳(CO)"源-汇"争议。尽管珊瑚礁的钙化过程伴随CO释放,但考虑到珊瑚礁生态系统内部复杂的生物地球化学循环过程,以及造礁珊瑚特殊的混合营养特性,其作为碳汇功能的属性也不容忽视。文章从提高珊瑚礁对气候变化的弹性适应角度出发,尝试厘清有关珊瑚礁生态系统的CO"源-汇"争议,探索将珊瑚礁由碳源向碳汇转变的生态调控方式和途径,以期为实施海洋负排放、践行国家碳中和战略提供理论和技术支撑。

关键词：珊瑚礁碳中和负排放恢复力生态修复

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