IHB OpenIR  > 水生生物多样性与资源保护研究中心  > 期刊论文
Population structure of an endemic gastropod in Chinese plateau lakes: evidence for population decline
Song, Zhuoyan1,2; Zhang, Junqian1; Jiang, Xiaoming1,2; Wang, Chouming1; Xie, Zhicai1; Song, ZY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
2013-06-01
Source PublicationFRESHWATER SCIENCE
ISSN2161-9565
Volume32Issue:2Pages:450-461
AbstractThe highly endemic diversity of the Yun-Gui plateau lakes has decreased severely in recent decades. Protecting these native species is a challenge, in part because their biology and population ecology remain unexplored. We investigated 1 focal endangered gastropod species (Margarya melanioides) in 1 plateau lake: 1) to quantify spatiotemporal variation in population abundance and size structure, and 2) to identify the key variables influencing these variations. Density was 0.068 individuals/m(2) with an estimated total population size of 2.1 x 10(7) individuals. The size-frequency distribution was skewed toward larger, mature individuals (40.0-60.0 mm), a result indicating that the population is aging. Population size structure showed high spatial heterogeneity, and density was highest in the north-central region of the lake. Redundancy analysis indicated that human-induced environmental degradation strongly controlled the spatial patterns in size-structure. This species has experienced a remarkable decrease in range and population size over the past 50 y, and the population probably will collapse by 2015. The decline could be attributed to demographic drift, environmental filtering, human harvesting, and its limited dispersal ability. Our studies should give useful information for building efficient conservation strategies for M. melanioides and other threatened plateau gastropods. Further studies are needed on the population ecology and reproductive biology of M. melanioides, particularly on its reproductive behavior and size-specific survivorship.; The highly endemic diversity of the Yun-Gui plateau lakes has decreased severely in recent decades. Protecting these native species is a challenge, in part because their biology and population ecology remain unexplored. We investigated 1 focal endangered gastropod species (Margarya melanioides) in 1 plateau lake: 1) to quantify spatiotemporal variation in population abundance and size structure, and 2) to identify the key variables influencing these variations. Density was 0.068 individuals/m(2) with an estimated total population size of 2.1 x 10(7) individuals. The size-frequency distribution was skewed toward larger, mature individuals (40.0-60.0 mm), a result indicating that the population is aging. Population size structure showed high spatial heterogeneity, and density was highest in the north-central region of the lake. Redundancy analysis indicated that human-induced environmental degradation strongly controlled the spatial patterns in size-structure. This species has experienced a remarkable decrease in range and population size over the past 50 y, and the population probably will collapse by 2015. The decline could be attributed to demographic drift, environmental filtering, human harvesting, and its limited dispersal ability. Our studies should give useful information for building efficient conservation strategies for M. melanioides and other threatened plateau gastropods. Further studies are needed on the population ecology and reproductive biology of M. melanioides, particularly on its reproductive behavior and size-specific survivorship.
SubtypeArticle
KeywordEndangered Gastropods Margarya Melanioides Population Size Range Contraction Human-induced Degradation Demographic Drift Dispersal Ability Lake Dianchi
Department[Song, Zhuoyan; Zhang, Junqian; Jiang, Xiaoming; Wang, Chouming; Xie, Zhicai] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China; [Song, Zhuoyan; Jiang, Xiaoming] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
DOI10.1899/12-099.1
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationSpecial S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270] ; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270] ; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270] ; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEcology ; Marine & Freshwater Biology
WOS IDWOS:000318774500007
WOS KeywordFRESH-WATER BIODIVERSITY ; DIANCHI LAKE ; INVERTEBRATE CONSERVATION ; ISLAND BIOGEOGRAPHY ; EQUILIBRIUM-THEORY ; NORTH-AMERICA ; COMMUNITY ; CHALLENGES ; EUTROPHICATION ; CYANOBACTERIA
Funding OrganizationSpecial S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270] ; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270] ; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270] ; Special S&T Project on Treatment and Control of Water Pollution [2013ZX07102-005]; National Natural Science Foundation of China [31272270]
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/19255
Collection水生生物多样性与资源保护研究中心_期刊论文
Corresponding AuthorSong, ZY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Song, Zhuoyan,Zhang, Junqian,Jiang, Xiaoming,et al. Population structure of an endemic gastropod in Chinese plateau lakes: evidence for population decline[J]. FRESHWATER SCIENCE,2013,32(2):450-461.
APA Song, Zhuoyan,Zhang, Junqian,Jiang, Xiaoming,Wang, Chouming,Xie, Zhicai,&Song, ZY .(2013).Population structure of an endemic gastropod in Chinese plateau lakes: evidence for population decline.FRESHWATER SCIENCE,32(2),450-461.
MLA Song, Zhuoyan,et al."Population structure of an endemic gastropod in Chinese plateau lakes: evidence for population decline".FRESHWATER SCIENCE 32.2(2013):450-461.
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