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Correlation between δ^(18)O, Sr/Ca and Mg/Ca of coral Acropora and seawater temperature from coral culture experiments

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Science China Earth Sciences 2014年第5期57卷 1048-1060页

作者： XIAO YingKai LIU WeiGuo MA YunQi ZHANG YanLing HE MaoYong LUO ChongGuang LIAO QingQiang Qinghai Institute of Salt Lakes Chinese Academy of Sciences State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences Beihai Aquarium

To be used as proxies of seawater surface temperature （SST）, the 61Soc values and Sr/Ca and Mg/Ca ratios of scleractinian coral skeletons must be verified by coral culture experiments in the laboratory. This paper describes a coral culture experiment that was conducted at several seawater temperatures T （21-28℃） using a tandem aquarium system and the new method for depositing coral skeletons grown under controlled conditions. The δ180c values and the St/Ca and Mg/Ca ratios of the cultured coral were measured. We concluded that the δ18Oc values and Sr/Ca and Mg/Ca ratios of the cultured coral are clearly corre- lated with T. The linear regression curve is δ18Oc（‰）=-0.1427×T（℃）-0.1495 （n=18, r=0.955, p〈0.0001）, and the slope of -0.1427‰/°d℃ is at the low end of the range of published values （-0.13-0.29‰/°d℃）. The Sr/Ca ratio decreases with increas- ing T, whereas the Mg/Ca ratio increases with increasing T, indicating a negative correlation between Sr/Ca and Mg/Ca. Their linear regression curves are Sr/Ca（mmol/mol）=-O.O4156×T＋lO.59 （n=15, r=-0.789, p〈0.005） and Mg/Ca （mmol/mol）= 0.04974×T＋2.339 （n=17, r=-0.457, p〈0.05）, respectively, which demonstrate that when Mg/Ca and Sr/Ca are increased by one unit, T increases by 5.19℃and decreases by 15.62℃, respectively. These variations are significantly lower than published values.

关键词： coral culture seawater temperature oxygen isotope microelement ratio

Influence of seawater temperature on Phytoplankton Growth in Jiaozhou Bay, China

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Chinese Journal of Oceanology and Limnology 2004年第2期22卷 166-175页

作者：杨东方高振会陈豫王培刚孙培艳 College of Fishery Science Shanghai Fisheries University Shanghai 200090ChinaBeihai Monitoring Center State Oceanic Administration Qingdao 266033 ChinaInstitute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Beihai Monitoring Center State Oceanic Administration Qingdao 266033 China College of Computer Science Shanghai Fisheries University Shanghai 200090 China

The phytoplankton reproduction capacity (PRC), as a new concept regarding chlorophyll-a and primary production (PP) is described. PRC is different from PP, carbon assimilation number (CAN) or photosynthetic rate (P B). PRC quantifies phytoplankton growth with a special consideration of the effect of seawater temperature. Observation data in Jiaozhou Bay, Qingdao, China, collected from May 1991 to February 1994 were used to analyze the horizontal distribution and seasonal variation of the PRC in Jiaozhou Bay in order to determine the characteristics, dynamic cycles and trends of phytoplankton growth in Jiaozhou Bay; and to develop a corresponding dynamic model of seawater temperature vs. PRC. Simulation curves showed that seawater temperature has a dual function of limiting and enhancing PRC. PRC’s periodicity and fluctuation are similar to those of the seawater temperature. Nutrient silicon in Jiaozhou Bay satisfies phytoplankton growth from June 7 to November 3. When nutrients N, P and Si satisfy the phytoplankton growth and solar irradiation is sufficient, the PRC would reflect the influence of seawater temperature on phytoplankton growth. Moreover, the result quantitatively explains the scenario of one-peak or two-peak phytoplankton reproduction in Jiaozhou Bay, and also quantitatively elucidates the internal mechanism of the one- or two-peak phytoplankton reproduction in the global marine areas.

关键词： phytoplankton reproduction seawater temperature phytoplankton reproduction capacity Jiaozhou Bay

Hydro-environmental Characteristics of seawater around Boubyan Island,Kuwait Using Annual Variations of seawater temperature,Salinity and Tide Fluctuations

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Journal of Marine Science 2019年第2期1卷 28-38页

作者： Neelamani Subramaniam Yousef Al-Osairi Coastal Management Program Environment and Life Sciences Research CentreKuwait Institute for Scientific ResearchP.O.Box 24885Safat13109Kuwait

The temporal and spatial variations of seawater temperature,salinity,and tidal fluctuations are important parameters for understanding the hydrodynamic,water quality,and marine biological activity in the *** is also important to study and understand the probability and statistical aspects of these parameters for the planning and implementation of different types of marine *** parameters were measured at five different locations around Boubyan Island,Kuwait,for a span of almost one year during *** on the analysis of the measured data,it is found that the seawater salinity has varied from 34.14 to 48.31 *** seawater temperature is also found to vary from 10.83 oC to 35.67 *** seawater level has varied from-2.694 m to 2.378 m with respect to the mean sea *** is found that the peak of the probability density of seawater level is flat valued,whereas the probability density of salinity and seawater temperature is multimodal.A comparison of present and past measured seawater temperatures revealed that in Khor Al-Sabiya,the seawater temperature is increasing at the rate of 0.034 oC/year,which clearly indicates the effect of global warming.A similar study reveals that the annual average increase in salinity at Khor Al-Sabiya is 0.38 ppt,which clearly indicates a significant reduction of freshwater flow from Shatt Al-Arab into the Arabian *** Kuwait is investing in many projects around the Boubyan Island,the results of this study will be useful for the integrated and sustainable development of Boubyan and Failaka Islands in Kuwait.

关键词： Shatt Al-Arab Khor Al-Sabiya Khor Abdullah seawater temperature Salinity Tide

Physiological performance of three calcifying green macroalgae Halimeda species in response to altered seawater temperatures

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Acta Oceanologica Sinica 2020年第2期39卷 89-100页

作者： Zhangliang Wei Jiahao Mo Ruiping Huang Qunju Hu Chao Long Dewen Ding Fangfang Yang Lijuan Long CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Marine Environmental Science College of Ocean and Earth SciencesXiamen UniversityXiamen 361102China First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China

The effects of seawater temperature on the physiological performance of three Halimeda species were studied for a period of 28 *** treatments were established for Halimeda cylindracea,Halimeda opuntia and Halimeda lacunalis,in triplicate aquaria representing a factorial temperature with 24°C,28°C,32°C,34°C and 36°C,*** average Fv/Fm of these species ranged from 0.732 to 0.756 between 24°C and 32°C but declined sharply between 34°C(0.457±0.035)and 36°C(0.122±0.014).Calcification was highest at 28°C,with net calcification rates(Gnet)of(20.082±2.482)mg/(g·d),(12.825±1.623)mg/(g·d)and(6.411±1.029)mg/(g·d)for ***,*** and ***,*** 24°C and 32°C,the specific growth rate(SGR)of ***(0.079%–0.110%d–1)was lower than that of ***(0.652%–1.644%d–1)and ***(0.360%–1.527%d–1).Three Halimeda species gradually bleached at 36°C during the study ***(MDA)and proline levels in tissues of the three Halimeda were higher in 34–36°C than those in 24–32°*** results indicate that seawater temperature with range of 24–32°C could benefit the growth and calcification of these Halimeda species,however,extreme temperatures above 34°C have negative *** measured physiological parameters also revealed that *** and *** displayed broader temperature tolerance than ***.

关键词： calcifying macroalgae climate change seawater temperature physiological performance photosynthesis calcification

Seasonal Gametogenesis of Host Sea Anemone(Entacmaea quadricolor) Inhabiting Hong Kong Waters

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Journal of Ocean University of China 2015年第1期14卷 143-148页

作者： BI Ying ZHANG Bin ZHANG Zhifeng QIU Jianwen Key Laboratory of Marine Genetics and Breeding of Ministry of Education Ocean University of China Department of Biology Hong Kong Baptist University

Studying gonadal development of annual cycle can reveal the process of gametogenesis and reproductive period, and evaluate fertility and source utilization of a species. Host sea anemones are conspicuous members of tropical and subtropical reef ecosystems, but little is known about its biology including reproductive seasonality. Here we reported a one-year study on the gametogenesis and reproduction of host sea anemone(Entacmaea quadricolor) inhabiting Hong Kong waters. E. quadricolor tissues were sampled in 12 occasions from 5 m and 15 m depths of water, respectively. Histological sectioning of the tissues showed that E. quadricolor was dioecious, and populational ratio of female to male was 1:1.6. The gonadal development was asynchronous within an annual cycle, which included proliferating, growing, maturing, spawning, and resting stages. The spawning occurred between August and October when surface seawater temperature reached the annual maximum(28℃), suggesting that temperature is an important factor modulating the gonadal development and mature of E. quadricolor.

关键词： Entacmae aquadricolor gonad annual cycle histology seawater temperature

Effect of temperature on Gene Expression in the Pearl Oyster Pinctada fucata

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Journal of Ocean University of China 2014年第3期13卷 509-515页

作者： LIU Wenguang HUANG Xie LIN Jianshi HE Maoxian CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of Sciences

In this study, we examined the effect of elevated temperature on the expression patterns of genes, i.e., nacrein, irr, n16, n19, and hsp70 in the pearl oyster Pinctada fucata. The experiment was carried out at 4 temperatures, i.e., 20℃(ambient, control), 24, 28℃, and 32℃. The expression levels of target genes in P. fucata were assayed at 0, 6, 24, 48, and 96 h via real-time polymerase chain reaction. Results showed that the expression levels of nacrein and irr had no significant variations among different time points below 28℃, but significantly increased over time at 32℃. The expression levels of n16 and n19 did not change markedly at 20℃. The former increased significantly at 6 h and 24 h while the latter substantially decreased during 6–96 h at 24, 28 and 32℃. Among different temperatures, the level of n16 was significantly lower at 20℃ than at other temperatures during 6–96 h, and the level of n19 significantly varied among different temperatures at 48 h and 96 h. The expression level of hsp70 was significantly higher at 32℃ than at 20, 24 and 28℃ at 24 h. These results demonstrated that elevated temperature impacted the physiological processes of P. fucata and potentially influenced its adaptability to thermal stress.

关键词： seawater temperature heat shock protein gene expression pattern Pinctadafucata

Climate change analysis of sea surface temperature in Chengshantou based on homogenized observatory array

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Marine Science Bulletin 2020年第2期22卷 1-10页

作者： Tian Wei ZOU Shuguang LIU lizhao ZOU Yan Information Service Center of Offshore oil production plant SINOPEC Shengli Oilfield CompanyDongying 257000Shandong provinceChina Yantai Oceanic Environmental Monitoring Central Station Rongcheng 264321Shandong provinceChina

The observational sea surface temperature(SST)data from 1960 to 2017 of the Chengshantou marine station has been adjusted by the Penalized Maximal Test(PMT)developed by the Climate Research Center of the Environment Ministry of Canada,based on the metadata *** this study,the homogenous surface air temperature(SAT)data from neighboring meteorological observation stations are used to construct the reference series by correlation coefficient weighted averaged *** climate change characteristics of the Chengshantou SST were analyzed using the homogenized *** show that the annual average SST trend has changed significantly before and after the *** warming trend increased from 0.04℃/10 a before revision to 0.15℃/10 *** warmest five years occurred mostly after 1980,that is,1973,1989,2002,2007 and *** generally showed a significant upward trend and significant inter-decadal *** the 1960s to the end of the 1980s,it was a colder stage,and then began to warm *** was a warmer period from the 1990s to the *** 1960 to 2017,the jump point occurred in 1987,which is very consistent with the temperature characteristics of China's mainland.

关键词： seawater temperature climatic variability changing trend climatic tendency