检索结果-南通市图书馆

Influence of flooding and vegetation on carbon,nitrogen,and phosphorus dynamics in the pore water of a spartina alterniflora salt marsh

引用

Journal of Environmental Sciences 2011年第2期23卷 212-221页

作者： Vanesa L.Negrin Carla V.Spetter Raúl O.Asteasuain Gerardo M.E.Perillo Jorge E.Marcovecchio Argentine Institute of Oceanography (IADO CONICETCCT-Bahía Blanca)Camino La Carrindanga km 75Building E-1 CC 804Bahía Blanca 8000Argentina Department of Chemistry Southern National Institute of Chemistry (INQUISUR)Southern National University (UNS)Av Alem 1253Bahía Blanca 8000Argentina Department of Geology Southern National University (UNS)San Juan 670Bahía Blanca 8000Argentina National Technological University Regional Faculty of Bahía Blanca (UTN-FRBB)11 de Abril 461Bahía Blanca 8000Argentina University of the Fraternity of Associations Santo Toms de Aquino (FASTA) Gascón 3145Mar del Plata 7600Argentina

Four sites were selected in a salt marsh in the Bahia Blanca Estuary （Argentina）：（1） low marsh （flooded by the tide twice daily） vegetated by S. alterniflora; （2） non-vegetated low marsh; （3） high marsh （flooded only in spring tides） vegetated by S. alterniflora; （4） non-vegetated high marsh. The pH and Eh were measured in sediments, while dissolved nutrients （ammonium, nitrate, nitrite and phosphate） and particulate organic matter （POM） were determined in pore water, pH （6.2-8.7） was only affected by vegetation in low areas. Eh （from -300 to 250 mV） was lower at low sites than at high ones; in the latter, the values were higher in the non-vegetated sediments. The POM concentration was greater in the high marsh than in the low marsh, with no effect of vegetation. Ammonium was the most abundant nitrogen nutrient species in pore water, except in the non-vegetated high marsh where nitrate concentration was higher. All nitrogen nutrients were affected by both flooding and vegetation. Phosphate was always present in pore water at all sites throughout the year and its concentration varied within narrow limits, with no effect of flooding and greater values always at non-vegetated sites. Our results showed that the variability of the pore water composition within the marsh is greater than the temporal variation, meaning that both tidal flooding and vegetation are important in the dynamics of nutrients and organic matter in the sediment pore water.

关键词： organic matter nutrients flooding spartina alterniflora

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

Geographical Variation and Influencing Factors of spartina alterniflora Expansion Rate in Coastal China

引用

Chinese Geographical Science 2020年第1期30卷 127-141页

作者： ZHANG Danhua HU Yuanman LIU Miao CHANG Yu SUN Lishuang School of Transportation Engineering Shenyang Jianzhu UniversityShenyang 110168China Institute of Applied Ecology Chinese Academy of SciencesShenyang 110164China

Biological invasion poses a huge threat to ecological *** alterniflora was introduced into China in 1979,and its arrival corresponded with negative effects on native *** explore geographical variation of its expansion rate in coastal China,we selected 43 *** sites from Tianjin Coastal New Area to *** area expansion rate,expansion rate paralleling and vertical to the shoreline were analysed based on Landsat images and field survey in *** Ocean Data Assimilation(SODA)and climate data were collected to statistically analyse the influential factors of expansion *** showed that significant difference of *** area expansion rate among different latitude zones(P<0.01),increasing from 6.08%at southern(21°N–23°N)to 19.87% in Bohai Bay(37°N–39°N)along latitude *** was a significant difference in expansion rate vertical to shoreline in different latitude zones(P<0.01)with the largest occurring in Bohai Bay(256m/yr,37°N–39°N),and showed an decreasing tendency gradually from north to *** significant difference and latitudinal clines in expansion rate paralleling to shoreline were *** rate had significant negative correlation with mean seawater temperature,the lowest seawater temperature,current zonal velocity and meridional velocity and presented a reducing trend as these biotic factors increased;however,they were not significantly correlated with the highest seawater temperature and mean seawater *** identified significant correlations between expansion rate and annual mean temperature,the lowest temperature in January and annual precipitation,but there was little correlation with annual diurnal difference in temperature and the highest temperature in *** rapid expansion rate in high-latitude China demonstrated a higher risk of potential invasion in the north;dynamic monitoring and control management should be established as soon as possible.

关键词： geographical variation biological invasion spartina alterniflora expansion rate coastal wetlands China

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

Mining salt stress-related genes in spartina alterniflora via analyzing co-evolution signal across 365 plant species using phylogenetic profiling

引用

aBIOTECH 2023年第4期4卷 291-302页

作者： Shang Gao Shoukun Chen Maogeng Yang Jinran Wu Shihua Chen Huihui Li State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Nanfan Research Institute Chinese Academy of Agricultural SciencesSanya 572024China Hainan Yazhou Bay Seed Laboratory Sanya 572024China Key Laboratory of Plant Molecular&Developmental Biology College of Life SciencesYantai UniversityYantai 264005China The Institute for Learning Sciences and Teacher Education Australian Catholic UniversityBrisbaneQLD 4001Australia

With the increasing number of sequenced species,phylogenetic profiling(PP)has become a powerful method to predict functional genes based on co-evolutionary ***,its potential in plant genomics has not yet been fully *** this context,we combined the power of machine learning and PP to identify salt stress-related genes in a halophytic grass,spartina alterniflora,using evolutionary information generated from 365 plant *** results showed that the genes highly co-evolved with known salt stress-related genes are enriched in biological processes of ion transport,detoxification and metabolic *** ion transport,five identified genes coding two sodium and three potassium transporters were validated to be able to uptake Na?.In addition,we identified two orthologs of trichome-related AtR3-MYB genes,SaCPC1 and SaCPC2,which may be involved in salinity *** co-evolved with SaCPCs were enriched in functions related to the circadian rhythm and abiotic stress ***,this work demonstrates the feasibility of mining salt stress-related genes using evolutionary information,highlighting the potential of PP as a valuable tool for plant functional genomics.

关键词： Phylogenetic profiling spartina alterniflora Salt stress-related gene Machine learning Evolutionary information

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

Impact of the cord-grass spartina alterniflora on sedimentary and morphological evolution of tidal salt marshes on the Jiangsu coast,China

引用

Acta Oceanologica Sinica 2006年第4期25卷 32-42页

作者： WANG Aijun GAO Shu JIA Jianjun Open Laboratory of Ocean Coast Environmental Geology Third Institute of Oceanography State Oceanic Administration Xiamen 361005 China Ministry of Education Key Laboratory for Coast and Island Development Nanjing University Nanjing 210093 China Key Laboratory of Submarine Geosciences Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China

The tidal flats of the Wanggang area, on the Jiangsu coast, represent the largest continuously distributed coastal wetland in terms of area coverage in China, and the dynamics of tidal flat accretion and erosion is highly complicated. The cord-grass spartina alterniflora, which was introduced artificially into the Jiangsu coast, has significant influences on the regional tidal flat evolution in terms of deposition rate, spacial sediment distribution patterns and tidal creek morphology. On the basis of the data set of bed elevation and accumulation rate for different periods of time, the applicability of the Pethick - Allen model to the Jiangsu tidal salt marshes is discussed. In addition, caesium-137 dating was carried out for sediment samples collected from the salt marsh of the Wangang area. In combination with the caesium-137 analysis and the data collected from literature, the Pethick - Allen model was used to derive the accumulation rate in the Wanggang tidal flat for the various periods. The results show that the pattern of tidal flat accretion has been modified, due to more rapid accretion following the iatroduction of S. alterniflora to the region. Surficial sediment samples were collected from representative profiles and analyzed for grain size with a laser particle analyzer. The result shows that fine-grained sediment has been trapped by the plant, with most of the sediment deposited on the Suaeda salsa and spartina angelica flats being derived from drainage creeks rather than the from gently sloping tidal flats. Remote sensing analysis and in situ observations indicate that the creeks formed in the S. alterniflora flat have a relatively small ratio of width to depth, a relatively high density, and are more stable than the other tidal flat creek systems in the study area.

关键词： spartina alterniflora tidal flat sedimentation morphological evolution Jiangsu coast

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

Distribution and invasion of spartina alterniflora within the Jiaozhou Bay monitored by remote sensing image

引用

Acta Oceanologica Sinica 2022年第6期41卷 31-40页

作者： Jianbu Wang Zhaoyang Lin Yuanqing Ma Guangbo Ren Zijun Xu Xiukai Song Yi Ma Andong Wang Yajie Zhao Laboratory of Marine Physics and Remote Sensing First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China School of Information and Electrics Beijing Institute of TechnologyBeijing 100081China Shandong Marine Resources and Environment Research Institute Shandong Provincial Key Laboratory of Restoration for Marine EcologyYantai 264006China North China Sea Environmental Monitoring Center State Oceanic AdministrationQingdao 266033China Shandong Yellow River Delta National Nature Reserve Administration Committee Dongying 257091China

spartina alterniflora as an alien invasive plant,poses a serious threat to the ecological functions of the coastal wetland of the Jiaozhou *** of 2019,the distribution area of *** in the Jiaozhou Bay has reached more than 500 hm^(2).For this reason,combined with field surveys,remote sensing monitoring of the invasion *** in the Jiaozhou Bay has been carried *** accurately identify *** within the Jiaozhou Bay coastal wetland,we used a new method which is an implement of deep convolutional neural network,and by which we got a higher accuracy than the traditional *** on distribution of *** extracted by the proposed method,the temporal and spatial distribution characteristics of *** were *** then combined with environmental factors,the invasion mechanism of *** in the Jiaozhou Bay was analyzed in *** the monitoring results,it can be seen that *** in Jiaozhou Bay is mainly distributed in the beaches near the Yanghe River Estuary and its southern side,the Dagu River Estuary and the Nü*** alterniflora first broke out near the Yanghe River Estuary and gradually spread to the tidal flats near the Nü*** Dagu River Estuary is dominated by ***,whose area has not changed much over the years,and a small amount of *** has invaded later.

关键词： spartina alterniflora remote sensing coastal wetland deep residual network

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

Expansion and Management Implications of Invasive Alien spartina alterniflora in Yancheng Salt Marshes, China

引用

Open Journal of Ecology 2016年第3期6卷 113-128页

作者： Chunyue Liu Hongxing Jiang Shuqing Zhang Chunrong Li Xin Pan Jun Lu Yunqiu Hou Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun China Research Institute of Forest Ecology Environment and Protection Key Laboratory of Forest Protection of State Forestry Administration Chinese Academy of Forestry Beijing China Yancheng National Nature Reserve Xinyanggang Sheyang County Jiangsu China School of Electrical & Information Technology Changchun Institute of Technology Changchun China

Improved understanding of the spatial dynamics of invasive plant species is critical for effective land management and control of future invasion. The Yancheng National Nature Reserve (YNNR), an internationally important wetland, has the largest distribution of alien spartina alterniflora in China. This alien plant was intentionally introduced for erosion prevention and dike protection in China. However, it became an aggressive competitor with native salt marsh plants in the coastal regions in China. High resolution imagery, SPOT-5, was used to map plant communities including invasive species in the south core zone of YNNR with the natural ecosystem of salt marshes in 2003, 2005 and 2008. The fuzzy set assessment method significantly improved the classification accuracies over the conventional error matrix, i.e., from 73.8%, 73.5% and 81.4% to 91.5%, 91.6% and 93.4% in 2003, 2005 and 2008, respectively. It shows a great potential for mapping invasive plant species. Phragmites australis and S. alterniflora were the most accurately mapped classes, and sparse and dense Suaeda glauca were the least accurately mapped. From 2003 to 2008, S. alterniflora increased 28.8% from 1664.1 to 2142.6 ha in area size, and more than 2.5 times from 742 to 2608 patches. The highest increase in patch number occurred within the interval between 2001 and 3000 m from the eastern baseline. This increase was dominated by small patches with area less than 200 m2. During the study period, the mean spread width was 405 ± 80.7 m in the original large patch of area over 200 ha. The eastward/seaward spread was distinctively larger than the westward/landward. The results enhance the understanding of alien plant’s invasion patterns and help improve conservation efforts.

关键词： spartina alterniflora SPOT-5 Remote Sensing Fuzzy Set Assessment Expansion Characteristics Management Implications

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

Effects of Ecological Restoration of Mangrove Wetlands Using Native Mangrove Species to Replace spartina alterniflora: A Case Study in Southern China

引用

Open Journal of Ecology 2023年第12期13卷 956-976页

作者： Jiaming Li Mouxin Ye Chunxi Cao Shozo Shibata Graduate School of Global Environmental Studies Kyoto University Kyoto Japan Shenzhen Mangrove Wetlands Conservation Foundation Shenzhen China

Within the expanse of China’s coastline, the invasive alien cordgrass species spartina alterniflora has caused profound nationwide damage and has emerged as a critical factor contributing to the degradation of mangrove wetlands, especially in the study area in Beihai, Guangxi. However, current treatments for S. alterniflora remain less effective and limited research focuses on the preliminary changes after artificial plantation. A comprehensive approach combining physical interventions with biological control measures has been employed to eradicate smooth cordgrass and facilitate the restoration of native mangrove wetlands. The study involved the periodic monitoring of the growth conditions of mangroves and the biodiversity of avian and benthic organisms, conducted at three to four-month intervals following the artificial plantation with one-year-old seedlings and propagules of native mangrove species Rhizophora stylosa. Results indicated that through the allometric equation, the above-ground biomass of planted seedlings had a ~20 g increase in average but the growth conditions were not significant over an eight-month period. High percentage of important avian species underlined the potential of the study site to serve as a worthwhile habitat and notable seasonal variations were observed in the biodiversity of bird species. Biodiversity indices of bird and benthos species also followed a similar fluctuation and reached a peak in April 2023. This research underscores the initial lack of distinct improvements during the early stages of the ecological restoration project, thorough maintenance, long-term monitoring, holistic considerations on a larger scale would be imperative for ongoing projects in the future.

关键词： Mangrove spartina alterniflora Invasive Species Ecological Restoration Ecological Monitoring

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

The Community Structure of Benthic Macroinvertebrates Associated with spartina alterniflora in the Yangtze Estuary, in China

引用

Zoological Research 2007年第2期28卷 167-171页

作者：谢志发章飞军刘文亮陆健健华东师范大学河口海岸学国家重点实验室上海200062

Benthic macroinvertebrate communities in spartina alterniflora zones in the Yangtze Estuary, in China, were investigated seasonally in 2005, and their structure and biodiversity were analyzed. Twenty-one species were identified, across four Classes; 10 species of Crustacea, five species of Polychaeta, five species of Gastropoda, and one species of Lamellibranchia. Dominant species included： Assiminea sp., Notomastus latericeus, Cerithidea largillierl, Gtauconome chinensi and Gammaridae sp. Functional groups were comprised of a phytophagous group and a detritivorous group. The average density of all benthic macroinvertebrates was 650.5 ±719.2 inds/m^2 in the survey area. The high value of the standard deviation of the average density was a result of abundant Assiminea sp. at Beihu tidal flats. The average density of macroinvertebrates from Beihu tidal flat, Chongming Dongtan to Jinshanwei tidal flat decreased gradually. There was significant difference between compositions and abundance of macroinvertebrates along the estuary gradient （P 〈 0.05）. The density and biodiversity were highest in summer and lowest in winter. The mean biomass of macroinvertebrates was 20.8 ± 6.1 g/m^2. Biomass changed seasonally in the same way as density, with the change in biomass being： summer （Aug.）〉autumn （Oct.）〉spring （Apr.）〉 winter （Dec.）. A BIO-ENV analysis showed that the mean grain size of sediment, height of spartina and salinity were the ma- jor factors which affected the structure of the macroinvertebrate community. Variations in the community structure were probably caused by the population dynamics of S. alterniflora along with the variation in sampling time and location.

关键词： Benthic macroinvertebrate spartina alterniflora Yangtze Estuary Community structure

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

Why is the salt marsh grass,spartina alterniflora,an effective invasive species?

Why is the salt marsh grass,Spartina alterniflora,an effecti...

引用

北京生物入侵国际研讨会

作者： Mendelssohn,Irving A. Wetland Biogeochemistry Institute and Department of Oceanography and Coastal Sciences Louisiana State UniversityBaton RougeLouisiana 70803USA

The perennial grass,spartina alterniflora Loisel,dominates the intertidal coastal marshes of the Atlantic and Gulf coasts of the United *** ecology of salt marshes in which this species dominates has been extensively investigated due to the documented biogeochemical functions that these ecosystems perform and the resulting societal values they ***,characteristics

关键词： spartina alterniflora ecology invasive species anoxia salinity tolerance

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

De novo Assembly and Characterization of spartina alterniflora(Poaceae)Transcriptome by RNA-seq

De novo Assembly and Characterization of Spartina alterniflo...

引用

后植物志时代的系统与进化植物学——2011年全国系统与进化植物学暨第十届青年学术研讨会

作者： Wuxia Guo,Yelin Huang,Renchao Zhou,Suhua Shi. (Sun Yat-Sen University,Guangzhou 510275,China)

Background:spartina alterniflora Loisel.(smooth cordgrass,2n=62) is a invasive perennial grass originated from Atlantic and Gulf Coast estuaries of North America,and has invaded estuaries around the world to *** genomic resources available for *** such as ESTs or genomie data sets are limited due to its large and complex genome(hexaploid,genome size=1,763.9 Mbp). Ultra-high-throughput RNA-seq technology provides a fast and efficient approach to generate large

关键词： spartina alterniflora invasion hexaploid RNA-seq transcriptome characterization

来源： cnki会议评论

在线全文

cnki会议

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：