Advanced   Register
XTBG OpenIR  > 土壤生态组  > 期刊论文

title: Soil nematode assemblages as bioindicators of primary succession along a 120-year-old chronosequence on the Hailuogou Glacier forefield, SW China
author: Lei, Yanbao;  Zhou, Jun;  Xiao, Haifeng;  Duan, Baoli;  Wu, Yanhong;  Korpelainen, Helena;  Li, Chunyang
Issued Date: 2015
Abstract: Successional dynamics in terrestrial ecosystems is important for interactions between aboveground and belowground subsystems. In this study, nematode communities in a Hailuogou Glacier Chronosequence from seven stages were investigated to determine whether changes in soil phosphorus (P) and nematode assemblages parallel those observed in aboveground communities, and whether the primary succession in this chronosequence has entered a retrogressive phase after 120 years of succession. The initial 40-year succession, including stages 2, 3 and 4, can be viewed as a build-up phase. Especially at stage 3, vegetation succession from grassland to forest accelerated the accumulation of plant litter and bioavailable P, paralleled with a sharp increase in nematode abundance. The mature phases covering stages 5, 6 and 7 displayed most balanced nematode communities, in which abundance, taxon richness, maturity index and structure index were at highest. However, the last stage 7 appeared to show some retrogressive characteristics, as suggested by the reduced bioavailability of P and a significant decrease in nematode densities, along with the disappearance of some rare genera of nematodes from higher trophic guilds, resulting in decreases in the nematode channel ratio, plant parasite index and enrichment index. Thus, the Hailuogou Glacier Chronosequence may enter its retrogressive phase during the next decade or century. A bacterial-based nematode energy channel dominated the chronosequence during the development; by contrast, a fungivore-based channel was activated at the early and late stages, because fungivores are better adapted to nutrient-poor environments. Our results demonstrated that different nematode guilds have contrasting responses to chronosequence stages, possibly due to their different responses to bottom-up and top-down controls. Furthermore, soil nematode communities could be used as sensitive bioindicators of soil health in glacial-retreat areas. (C) 2015 Elsevier Ltd. All rights reserved.
Related URLs: 10.1016/j.soilbio.2015.06.013
Appears in Collections:土壤生态组_期刊论文

Files in This Item:

File SizeFormat
Soil nematode assemblages as bioindicators of primary succession along a 120-year-old chronosequence on the Hailuogou Glacier forefield, SW China.pdf1067KbAdobe PDFView  Download

全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Lei, Yanbao,Zhou, Jun,Xiao, Haifeng,et al. Soil Nematode Assemblages As Bioindicators Of Primary Succession Along A 120-year-old Chronosequence On The Hailuogou Glacier Forefield, Sw China[J]. Soil Biology & Biochemistry,2015,88:362-371.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Lei, Yanbao]'s Articles
 [Zhou, Jun]'s Articles
 [Xiao, Haifeng]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Lei, Yanbao]‘s Articles
 [Zhou, Jun]‘s Articles
 [Xiao, Haifeng]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Powered by CSpace