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Contrasting energy pathways at the community level as a consequence of regime shifts
Xu, Jun1; Wen, Zhourui2; Ke, Zhixin3; Zhang, Meng4; Zhang, Min5; Guo, Nichun6; Hansson, Lars-Anders7; Xie, Ping1; Xu, J (reprint author), Wuhan Univ, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China.
2014-05-01
Source PublicationOECOLOGIA
ISSN0029-8549
Volume175Issue:1Pages:231-241
AbstractEcological regime shifts typically result in abrupt changes in ecosystem structure through several trophic levels, which leads to rapid ecosystem reconfiguration between regimes. An interesting aspect of the impact of regime shift is that alternative regimes may induce distinct shifts in energy pathways; these have been less tested than structural changes. This paper addresses this by using stable isotopes to establish the energy pathways in fish communities. We specifically focus on the impact of regime shift on changes of the energy pathways, and how the magnitude and direction of these changes affect the local community. We found that energy pathways significantly varied among the planktivorous, benthivorous, and piscivorous trophic guilds as a result of the alternative regimes. The regime shift from a clear to a turbid state altered the food web towards planktonic energy pathways and truncated food chain length, which is indicative of less ecological efficiency. This was confirmed by the adaptive foraging strategies of prevalent omnivores in the current communities. These structural and functional characteristics of trophic interactions might not facilitate classic trophic cascading effects in such a turbid regime and suppress the system's response to environmental changes, e.g., nutrient loading, and restoration efforts in turbid to clear water regime shifts.; Ecological regime shifts typically result in abrupt changes in ecosystem structure through several trophic levels, which leads to rapid ecosystem reconfiguration between regimes. An interesting aspect of the impact of regime shift is that alternative regimes may induce distinct shifts in energy pathways; these have been less tested than structural changes. This paper addresses this by using stable isotopes to establish the energy pathways in fish communities. We specifically focus on the impact of regime shift on changes of the energy pathways, and how the magnitude and direction of these changes affect the local community. We found that energy pathways significantly varied among the planktivorous, benthivorous, and piscivorous trophic guilds as a result of the alternative regimes. The regime shift from a clear to a turbid state altered the food web towards planktonic energy pathways and truncated food chain length, which is indicative of less ecological efficiency. This was confirmed by the adaptive foraging strategies of prevalent omnivores in the current communities. These structural and functional characteristics of trophic interactions might not facilitate classic trophic cascading effects in such a turbid regime and suppress the system's response to environmental changes, e.g., nutrient loading, and restoration efforts in turbid to clear water regime shifts.
SubtypeArticle
KeywordEnergy Pathways Food Web Omnivory Stable Isotopes Niche Space
Department[Xu, Jun ; Xie, Ping] Wuhan Univ, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China ; [Wen, Zhourui] Hubei Fishery Sci Inst, Wuhan 430071, Peoples R China ; [Ke, Zhixin] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marine Bioresource Sustainable Utilizat, Guangzhou 510301, Guangdong, Peoples R China ; [Zhang, Meng] Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China ; [Zhang, Min] Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China ; [Guo, Nichun] Anhui Agr Univ, Resources & Environm Coll, Hefei 230036, Peoples R China ; [Hansson, Lars-Anders] Lund Univ, Inst Biol Aquat Ecol, S-22362 Lund, Sweden
DOI10.1007/s00442-013-2878-2
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001] ; National Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001] ; National Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001] ; National Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000334691600021
WOS KeywordFOOD-WEB STRUCTURE ; SHALLOW LAKES ; TROPHIC POSITION ; ISOTOPE ANALYSIS ; TEMPERATE LAKES ; STABLE-ISOTOPES ; RESTORATION ; NITROGEN ; TAIHU ; NUTRIENTS
Funding OrganizationNational Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001] ; National Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001] ; National Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001] ; National Natural Science Foundation of China [31370473, 31200359, 31170439]; Water Pollution Control and Management Project of China [2012ZX07101-001, 2008ZX07101-001]
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20012
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorXu, J (reprint author), Wuhan Univ, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China.
Affiliation1.Wuhan Univ, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Hubei Fishery Sci Inst, Wuhan 430071, Peoples R China
3.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marine Bioresource Sustainable Utilizat, Guangzhou 510301, Guangdong, Peoples R China
4.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China
5.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
6.Anhui Agr Univ, Resources & Environm Coll, Hefei 230036, Peoples R China
7.Lund Univ, Inst Biol Aquat Ecol, S-22362 Lund, Sweden
Recommended Citation
GB/T 7714
Xu, Jun,Wen, Zhourui,Ke, Zhixin,et al. Contrasting energy pathways at the community level as a consequence of regime shifts[J]. OECOLOGIA,2014,175(1):231-241.
APA Xu, Jun.,Wen, Zhourui.,Ke, Zhixin.,Zhang, Meng.,Zhang, Min.,...&Xu, J .(2014).Contrasting energy pathways at the community level as a consequence of regime shifts.OECOLOGIA,175(1),231-241.
MLA Xu, Jun,et al."Contrasting energy pathways at the community level as a consequence of regime shifts".OECOLOGIA 175.1(2014):231-241.
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