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Stable carbon isotopic composition of submerged plants living in karst water and its eco-environmental importance
Wang, Pei1,2,3,4; Hu, Gang1,2,5; Cao, Jianhua1,2
2017-05-01
Source PublicationAQUATIC BOTANY
ISSN0304-3770
Volume140Pages:78-83
AbstractThe stable carbon isotopic composition of submerged plants (delta C-13(p)) can be controlled by physiological and environmental factors. Herein, we took advantage of a short, natural karst river with an annual mean bicarbonate (HCO3-) value of 3.8 mmol L-1 to study the stable carbon isotopic composition of submerged plants along the river and the influence of environmental conditions on the delta C-13(p) values. The delta C-13(p) values of Ottelia acuminata, Potamogeton wrightii, Vallisneria natal's, and Hydrilla verticillata from upstream to downstream show a gradient and ranged from -34.8 parts per thousand to -27.8 parts per thousand, -36.6 parts per thousand to -23.7 parts per thousand, -35.1 parts per thousand to -25.3 parts per thousand, and -38.6 parts per thousand to -26.3 parts per thousand, respectively and even more depleted values for the first two species at the uppermost site. Diurnal variation of water chemistry and concentration of the dissolved inorganic carbon (DIC) and the stable carbon isotopic composition of DIC (delta C-13(D)) indicate that the macrophytes and other primary producers in the river have a very high net photosynthetic rate. The gradient of delta C-13(p) values was consistent with CO2 being a declining source of inorganic carbon for photosynthesis in the downstream transect. The results demonstrate that the high DIC concentration with lower negative delta C-13 value, particularly in karst water environment has a significant role in controlling the stable carbon isotopic composition of submerged plants living in it.
SubtypeArticle
KeywordZhaidi River Submerged Plants Stable Carbon Isotope Dissolved Inorganic Carbon Karst Water Environment
DOI10.1016/j.aquabot.2017.03.002
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI ; ISTP
Funding OrganizationChinese Geological Survey Project(12120113005300) ; Chinese Geological Survey Project(12120113005300) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Geological Exploration projects of Shandong Province(2016-79) ; Geological Exploration projects of Shandong Province(2016-79) ; Karst Dynamics Laboratory ; Karst Dynamics Laboratory ; MLR ; MLR ; GZAR(14-B-04 ; GZAR(14-B-04 ; 14-B-03) ; 14-B-03) ; Chinese Geological Survey Project(12120113005300) ; Chinese Geological Survey Project(12120113005300) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Geological Exploration projects of Shandong Province(2016-79) ; Geological Exploration projects of Shandong Province(2016-79) ; Karst Dynamics Laboratory ; Karst Dynamics Laboratory ; MLR ; MLR ; GZAR(14-B-04 ; GZAR(14-B-04 ; 14-B-03) ; 14-B-03)
Language英语
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS KeywordCRASSULACEAN ACID METABOLISM ; INORGANIC CARBON ; CONCENTRATING MECHANISMS ; DIFFERENTIAL ABILITY ; SURFACE-WATER ; RIVER ; CO2 ; PHOTOSYNTHESIS ; BICARBONATE ; GROUNDWATER
WOS IDWOS:000405044500012
Funding OrganizationChinese Geological Survey Project(12120113005300) ; Chinese Geological Survey Project(12120113005300) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Geological Exploration projects of Shandong Province(2016-79) ; Geological Exploration projects of Shandong Province(2016-79) ; Karst Dynamics Laboratory ; Karst Dynamics Laboratory ; MLR ; MLR ; GZAR(14-B-04 ; GZAR(14-B-04 ; 14-B-03) ; 14-B-03) ; Chinese Geological Survey Project(12120113005300) ; Chinese Geological Survey Project(12120113005300) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Guangxi Science and Technology Development Program(14125008-2-1) ; Geological Exploration projects of Shandong Province(2016-79) ; Geological Exploration projects of Shandong Province(2016-79) ; Karst Dynamics Laboratory ; Karst Dynamics Laboratory ; MLR ; MLR ; GZAR(14-B-04 ; GZAR(14-B-04 ; 14-B-03) ; 14-B-03)
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/32860
Collection其他
Affiliation1.Chinese Acad Geol Sci, MLR, Karst Dynam Lab, Inst Karst Geol, Guilin 541004, Peoples R China
2.Chinese Acad Geol Sci, Inst Karst Geol, GZAR, Guilin 541004, Peoples R China
3.China Univ Geosci, Beijing 100083, Peoples R China
4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
5.Guilin Univ Technol, Guilin 541004, Peoples R China
Recommended Citation
GB/T 7714
Wang, Pei,Hu, Gang,Cao, Jianhua. Stable carbon isotopic composition of submerged plants living in karst water and its eco-environmental importance[J]. AQUATIC BOTANY,2017,140:78-83.
APA Wang, Pei,Hu, Gang,&Cao, Jianhua.(2017).Stable carbon isotopic composition of submerged plants living in karst water and its eco-environmental importance.AQUATIC BOTANY,140,78-83.
MLA Wang, Pei,et al."Stable carbon isotopic composition of submerged plants living in karst water and its eco-environmental importance".AQUATIC BOTANY 140(2017):78-83.
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