检索结果-南通市图书馆

Impacts of Typhoons Tianying and Dawei on seagrass distribution in Xincun Bay,Hainan Province,China

Acta Oceanologica Sinica 2011年第1期30卷 32-39页

作者： YANG Dingtian HUANG Daojian CAS key Laboratory of Tropical Marine Environmental Dynamics South China Sea Instituteof Oceanology Chinese Academy of Sciences Guangzhou 510301 China South China Institute of Environmental Sciences Ministry of Environmental Protection of thePeople＇s Republic of China Guangzhou 510655 China

More than 50% of the typhoons landing in China have landed on the southeast coast, where they have caused great pressure on the coastal environment. seagrass, one of the most important con- stituents of coastal ecosystems, is also greatly affected by typhoons. In order to clarify how seagrass distribution variation is affected by typhoons in coastal areas in southeast China, data of Typhoons Dawei and Tianying （category 4 and category 2 respectively, which just ran through the southern part of Hainan province） have been studied. In situ observation and satellite remote sensing data （CBERS-China Brazil Earth Resources Satellite） in 2004 and 2006 were used to retrieve seagrass distribution in Xincun Bay, Hainan province. In situ observations showed that leaf length, stem biomass and above ground biomass on average showed evidence of reduction after Typhoons Tiany- ing and Dawei. However, seagrass density showed no evidence of reduction after typhoon Tianying and Dawei passed by and increased rapidly in January 2006. From results of satellite remote sensing data, seagrass distribution can be detected with high accuracy, and the area of seagrass distribution on the south coast of Xincun Bay in 2006 after the typhoon passed by was smaller than that in 2004 in region A and B. However, in region C, area of seagrass coverage under 20% increased. These results demonstrated that typhoons Tianying and Dawei damaged seagrass bed and helped seagrass to get rid of aged and dead leaves, and this correspondingly facilitated seagrass growth.

关键词： seagrass Typhoon Tianying and Dawei Xincun Bay

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Assessing the potential for satellite image monitoring of seagrass thermal dynamics:for inter-and shallow sub-tidal seagrasses in the inshore Great Barrier Reef World Heritage Area,Australia

引用

International Journal of Digital Earth 2018年第8期11卷 803-824页

作者： S.R.Phinn E.M.Kovacs C.M.Roelfsema R.F.Canto C.J.Collier L.J.McKenzie Remote Sensing Research Centre School of Earth and Environmental SciencesUniversity of QueenslandSt LuciaAustralia Centre for Tropical Water and TERRAtic Ecosystem Research(TropWATER) James Cook UniversityCairnsAustralia

seagrass meadows are at increasing risk of thermal stress and recent work has shown that water temperature around seagrass meadows could be used as an indicator for seagrass *** thermal data have not been linked to the thermal properties of seagrass *** work assessed the covariation between 20 in situ average daily temperature logger measurement sites in tropical seagrass meadows and satellite derived daytime SST(sea surface temperature)from the daytime MODIS and Landsat sensors along the Great Barrier Reef coast in *** significant(R2=0.787–0.939)positive covariations were found between in situ seagrass logger temperatures and MODIS SST temperature and Landsat sensor temperatures at all sites along the *** MODIS SST were consistently higher than in situ temperature at the majority of the sites,possibly due to the sensor’s larger pixel size and location offset from field *** thermal data were lower than field-measured SST,due to differences in measurement scales and *** refined significantly and tested over larger areas,this approach could be used to monitor seagrass health over large(106 km2)areas in a similar manner to using satellite SST for predicting thermal stress for corals.

关键词： seagrass temperature thermal tolerance satellite sea surface temperature Landsat MODIS Great Barrier Reef

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Seasonal variation in species composition and abundance of demersal fish and invertebrates in a seagrass Natural Reserve on the eastern coast of the Shandong Peninsula,China

引用

Chinese Journal of Oceanology and Limnology 2016年第2期34卷 330-341页

作者：徐强郭栋张沛东张秀梅李文涛吴忠鑫 Fisheries College Ocean University of ChinaQingdao 266000China Liaoning Ocean and Fisheries Science Research Institute Dalian 116000China

seagrass habitats are structurally complex ecosystems, which support high productivity and biodiversity. In temperate systems the density of seagrass may change seasonally, and this may influence the associated fish and invertebrate community. Little is known about the role of seagrass beds as possible nursery areas for fish and invertebrates in China. To study the functioning of a seagrass habitat in northern China, demersal fish and invertebrates were collected monthly using traps, from February 2009 to January 2010. The density, leaf length and biomass of the dominant seagrass Zostera marina and water temperature were also measured. The study was conducted in a seagrass Natural Reserve(SNR) on the eastern coast of the Shandong Peninsula, China. A total of 22 fish species and five invertebrate species were recorded over the year. The dominant fish species were Synechogobius ommaturus, Sebastes schlegelii, Pholis fangi, Pagrus major and Hexagrammos otakii and these species accounted for 87% of the total number of fish. The dominant invertebrate species were Charybdis japonica and Octopus variabilis and these accounted for 98% of the total abundance of invertebrates. There was high temporal variation in species composition and abundance. The peak number of fish species occurred in August–October 2009, while the number of individual fish and biomass was highest during November 2009. Invertebrate numbers and biomass was highest in March, April, July and September 2009. Temporal changes in species abundance of fishes and invertebrates corresponded with changes in the shoot density and leaf length of the seagrass, Zostera marina.

关键词： Synechogobius Sebastes Charybdis Octopus seagrass shoot density

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The origin of the suspended particulate matter in the seagrass meadow of tropical waters, an evidence of the stable isotope signatures

引用

Acta Oceanologica Sinica 2019年第1期38卷 136-143页

作者： A'an Johan Wahyudi Afdal Research Center for Oceanography Indonesian Institute of Sciences

Suspended particulate matter(SPM) has been known as an important variable in the organic matter flow of coastal ecosystem. Half of burial carbon in seagrass meadows is contributed by allochthonous sources that compose the SPM such as phytoplankton, seagrass detritus, marine snow aggregates and terrestrially derived particles. Each composition of the SPM contributes different roles and is important to be identified, for instance,the exact contribution of seagrass detritus will be useful for determination of carbon export through the detritus form in seagrass meadows. Here, the SPM of seagrass meadows is studied in Bintan Island and the Selayar Archipelago. The aim of this research is to determine the source origin of the SPM using a stable isotope *** order to fulfill this aim, the objectives are defined as:(1) to specify the stable isotope signature(δ13C and δ15N)of the SPM, and(2) to determine the proportional distribution of the SPM's prospectus sources. The result shows that the possibility of the source origin of the SPM includes a seagrass fraction(Enhalus acoroides and Thalassia hemprichii), terrestrial C4 plant, macroalgae, and terrestrial C3 plant. The SPM lies between the marine-and terrigenous-end members. However, it seems that the SPM is more to be terrigenous-end and *** to a Bayesian mixing model, the terrestrial C4 has the highest contribution of the SPM at all sites except Barugaia and Pasi Island in Selayar(i.e., the highest contribution of the SPM is from the detritus of E. acoroides).The second contribution has been contributed by either seagrass detritus(E. acoroides or Th. hemprichii) or terrestrial C3 plant. The finding of this study indicates that there is a strong influence of the terrigenous sources in the SPM of the seagrass meadows.

关键词： suspended particulate matter stable isotope source origin seagrass ecosystems

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bioactivity of seagrass against the dengue fever mosquito Aedes aegypti larvae

引用

Asian Pacific Journal of Tropical Biomedicine 2012年第7期2卷 570-573页

作者： M Syed Ali S Ravikumar J Margaret Beula School of Marine Sciences Division of Marine Microbiology and MedicineDepartment of Oceanography and Costal Area StudiesAlagappa UniversityThondi Campus Department of Chemistry Scott Christian College(Autonomous)

Objective:To identify the larvieidal activity of the seagrass ***:seagrass extracts,Syringodium isoelifolium(.***),Cymodocea serrulata and Hulophila beccarii,were dissolved in DMSO to prepare a graded series of *** of 25 early 4th instars larvae of Aedes aegypti(***) were transferred to 250 *** bowl containing199 mL of distilled water and 1 mL of plant extracts(0.01 mg- 0.1 mg).After 24 h the mortality rate was identified with the formulae[(%of lest mortality-%of control mortality)/(100-%of control morlality)]× *** experiment was conducted with three replicates and a concurrent control group.A control group consisted of 1 mL of DMSO and 199 mL of distilled water ***:The root extract of *** showed maximum larvicidal activity with minimum concentration of extract of LC_(50)= 0.0604 ± 0.0040)μg/mL with lower confidence limit(LCL)-upper confidence limit(UCL) =(0.051-0.071) and LC_(90)=0.0972 μg/mL followed by leaf extract of *** showed LC_(50)=(0.062 ± 0.005)μ'g/*** regression equation of pool and leaf extract of *** for4th instar larvae were Y =4.909- 1.32x(R^2= 0.909) and Y= 2.066+ 1.2x(R^2 =0.897) *** results of the preliminary photochemical constituents shows the presence of saponin,steroids,terpenoid,phenols,protein and ***:from the present study the ethanolic extracts of seagrass of *** possesses lead compound for development of larvieidal activity.

关键词： Aedes aegypti Bioinsecticides Dengue fever Larvicides seagrass Syringodium isoetifolium Cymodocea serrulata Halophila beccarii Mosquito Extract

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fish Diversity and Fish Assemblage Structure in seagrass Meadows at Sikao Bay, Trang Province, Thailand

引用

Open Journal of Ecology 2015年第12期5卷 563-573页

作者： Wikit Phinrub Bunyat Montien-Art Jongkol Promya Apinun Suvarnaraksha Faculty of Fisheries Technology and Aquatic Resources Maejo University Chiang Mai Thailand Faculty of Science and Fisheries Technology Rajamangala University of Technology Srivijaya Thailand

We investigated the relationship between environmental variables as descriptors of the fish community, in terms of species diversity indices and fish assemblage patterns, in seagrass meadows at Sikao Bay, Trang Province, Thailand. Fish data and water quality parameters were collected from January to December 2012. A total of 10,596 fish specimens of 97 taxa in 48 families from four stations, Kham Bay (7°30'9.21''N, 99°18'7.67''E), Boonkong Bay (7°31'2.49''N, 99°17'40.09''E), Ban Pak Klong (7°36'17.67''N, 99°16'32.89''E) and Sai Cape (7°38'30.19''N, 99°14'49.85''E), were collected using gillnets of three different mesh sizes. The three most diverse families were Leiognathidae, Carangidae and Tetraodontidae, respectively. The dominant species were Atherinomorus duodecimalis, Sillago sihama and Pelates quadrilineatus. Specimens were highly abundant in July and less so in January and species richness was high in July and less so in March. Fish assemblages were classified into two patterns and the average of the Shannon index was 2.7. The environmental parameters in each month were analyzed by one-way ANOVA which did not show significant difference (P > 0.05) of pH, orthophosphate, wind speed and rainfall. Fish diversity and assemblage, and environmental parameters, were categorized into four groups. These could be promoted to local fisheries so that conservation programs cpuld be set up to ensure the ecological sustainability of seagrass meadows.

关键词： Fish Diversity Canonical Correspondence Analysis seagrass Sikao Bay

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fish assemblages in seagrass habitat along the Jordanian coast of the Gulf of Aqaba

引用

Natural Science 2012年第8期4卷 517-525页

作者： Maroof A. Khalaf Saber Al-Rousan Fuad A. Al-Horani Department of Marine Biology Faculty of Marine Sciences The University of Jordan-Aqaba Aqaba Jordan Marine Science Station The University of Jordan Aqaba Jordan

The spatial distribution and community structure of the fishes were studied at different depths and sites along the Jordanian coast in seagrass habitat. A total of 37,034 fishes were counted representing 132 species belonging to 35 families observed during visual census in three sites (average of 4741.6 fish per transect). Out of the 132 species encountered, 5 species of them including Neopomacentrus miryae Lethrinus borbonicus, Pseudanthias squamipinnis, Lethrinus variegatus, Siganus rivulatus accounted for 57.7% of all individuals. Fishes were most abundant and significantly higher at 12 m depths (mean N = 2889.6) in comparison with shallow 6m depth (mean = 1225.3 with (p = 0.0218). This may be attributed to many plank-tivorous fishes that inhabit this depth such as P. squampinnis, Paracheilinus octotaenia, Chromis pelloura, Decapterus macarellus, and Cirrhilabrus rubriventralis probably with high abundance of plankton at 12 m depth than 6 m. The number of species was significantly higher in Phosphate Loading Berth (PLB;mean S = 54.7) than in Hotels area site (HA;mean S = 12.8) with (p = 0.0002) and Tala Bay site (TB;mean S = 31) with (p = 0.0484). This may be due to higher hard coral cover at Phophate Loading Berth.

关键词： Fish Assemblages seagrass Habitat Gulf of Aqaba Red Sea

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bacterioplankton, Picoeukaryotes and Synechococcus Distribution Associated with seagrass in South Coast of Hainan Island, China

引用

Natural Resources 2014年第9期5卷 454-461页

作者： Dingtian Yang Xiujuan Shan Sumin Liu Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao China State Key Laboratory of Oceanography in the Tropics South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China

seagrass ecosystem is a potential bank for carbon sink. In the paper, we compared the distribution of bacterioplankton, picoeukaryotes and Synechococcus in seagrass ecosystem in Xincun Bay and coral ecosystem in Sanya Bay and found that quantity of bacterioplankton was higher in seagrass ecosystem, and picoeukaryotes had similar distribution pattern with that of bacterioplankton. However, quantity of Synechococcus distribution was higher in coral ecosystem and higher in Sanya Bay. Comparing the unit of quantity of bacterioplankton, picoeukaryotes and Synechococcus in Xincun Bay with that of Sanya Bay, open sea of the South China Sea and Indian Ocean, results showed that the highest quantity of bacterioplankton was in Xincun Bay, and the lowest was in open sea of the South China Sea. The quantity of picoeukaryotes had the similar pattern with that of bacterioplankton. Pattern of Synechococcus quantity was different, which was the highest in Sanya Bay. These results indicated that seagrass ecosystem was more suitable for bacterioplankton and picoeukaryotes growth.

关键词： seagrass Bacterioplankton Picoeukaryotes Synechococcus

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Relationship between the tropical seagrass bed characteristics and the structure of the associated fish community

引用

Open Journal of Ecology 2013年第5期3卷 331-342页

作者： Rohani Ambo-Rappe Muhammad Natsir Nessa Husain Latuconsina Dmitry L. Lajus Department of Aquatic Resources Management Faculty of Fishery and Marine Science Darussalam University Ambon Indonesia Department of Ichthyology and Hydrobiology Faculty of Biology and Soil Sciences St. Petersburg State University St. Petersburg Russia Department of Marine Science Faculty of Marine Science and Fisheries Hasanuddin University Makassar Indonesia

Structural complexity of seagrass bed including species composition and shoot density is argued to be an important factor determining fish assemblages. However statistical verification of such a relationship is possible only in areas with high species richness of seagrass and fish assemblages which is observed in tropical waters. Material for this study was collected in three seagrass beds with different structure in Inner Ambon Bay, Eastern Indonesia. This study provided evidence that higher structural complexity of seagrass bed was related to the higher richness, abundance, and biomass of fish. However, lower structural complexity of seagrass patch should not be underestimated because it provided different habitat for various stages of life in fish. Smaller fish preferred to occupy dense seagrass of dominant pioneer small-sized species (Halodule uninervis) and moved to the lesser dense bed of climax large-sized seagrass (Thalassia hemprichii and Enhalus acoroides) with increasing their size. This finding is important for seagrass-fisheries management.

关键词： Fish Tropical seagrass Structural Complexity Enclosed Bay Fisheries Management

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

seagrass Meadows under the Changing Climate:A Review of the Impacts of Climate Stressors

引用

Research in Ecology 2022年第1期4卷 27-36页

作者： Kuok Ho Daniel Tang Tony Hadibarata Environmental Science Program Division of Science and TechnologyBeijing Normal University-Hong Kong Baptist University United International CollegeZhuhaiGuangdong519087China Environmental Engineering Program Faculty of Engineering and ScienceCurtin University MalaysiaCDT 250MiriSarawak98009Malaysia

seagrass meadows provide important ecological functions,particularly by serving as carbon sinks and breeding grounds for marine *** change has threatened seagrass communities,causing their replacement,loss and increased *** review examined scholarly articles published between 2010-2021 to comprehensively present the impacts of climate change on seagrass *** shows that ocean warming negatively affects seagrass communities by favouring communities of lower structuring capacities,thus reducing the effectiveness of their ecological *** warming also promotes the propagation and spread of invasive species,and changes the trophic structures leading to further loss of seagrasses of *** seawater temperature is associated with shoot mortality and retarded growth of certain *** level rise causes more wave energy to be received by coastal seagrass communities,thus,creating more damage to the *** sea limits light penetration and alters distribution of seagrass *** dioxide enrichment of seawater increases photosynthetic rate of seagrasses but ocean warming and acidification counteract this beneficial *** dioxide enrichment affects different seagrass species and different parts of a seagrass species differently,and,where beneficial to seagrass communities,could enhance their ecological *** extremes could kill seagrasses while marine heatwaves and flooding could act synergistically to increase carbon demand of certain seagrasses and unfavourably change their *** impacts are often aggravated by anthropogenic *** review calls for more studies and conservation efforts to understand the impacts of climate change on seagrass communities and future-proof them against the changing climate.

关键词： Climate change Extreme weather seagrass Ocean warming Ocean acidification Vulnerability

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：