干旱区生态环境知识资源中心(Arid): Interannual changes in delta N-15 baseline in a lake-swamp-river food web: effects of summer precipitation in West Siberian forest steppe

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DOI	10.1007/s10533-020-00694-3
	Interannual changes in delta N-15 baseline in a lake-swamp-river food web: effects of summer precipitation in West Siberian forest steppe
	Kanaya, Gen; Yurlova, Natalia I.; Yadrenkina, Elena N.; Okano, Jun-ichi; Shikano, Shuichi
通讯作者	Kanaya, G
来源期刊	BIOGEOCHEMISTRY
ISSN	0168-2563
EISSN	1573-515X
出版年	2020
卷号	150 期号:2 页码:217-233
英文摘要	Frequency and intensity of precipitation events can alter hydrological conditions of lotic systems and material inflow from the catchment. In this study, interannual changes in food web structure were investigated in a lake-swamp-river system in the semi-arid West Siberian forest-steppe region using carbon and nitrogen stable isotope ratios (delta C-13 and delta N-15). The delta N-15 signatures of aquatic producers and consumers including zooplankton, benthic invertebrates, and fish sharply increased (up to 7.2 parts per thousand in range) in 2009 under high summer precipitation. This would reflect the inflow of(15)N-rich nutrients accumulated in the catchment through natural and anthropogenic activities, e.g., sewage, livestock farming, evaporation, and/or microbial denitrification. In 2010, benthic producers including epiphytes and macrophytes were more(13)C-enriched, which is likely due to limited supply of dissolved inorganic carbon (DIC) under water stagnation, leading to a large isotopic fractionation during photosynthesis. However,C-13-enrichments in the benthic producers were not reflected to those of aquatic consumers in the habitat. Interannual changes in delta C-13 of particulate organic matter (POM; a proxy of phytoplankton) were reflected to those of zooplankton, benthic invertebrates, and fish fry, suggesting the trophic importance of autochthonous phytoplankton in the system. These findings suggest that occasional precipitation events in semi-arid forest-steppe regions can modify nutrient flux from the catchment, leading to changes in delta N-15 baseline in the lotic food web.
英文关键词	delta C-13 and delta N-15 Aquatic food web Producer River flow regime Trophic baseline West Siberian forest-steppe
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000557749500001
WOS关键词	PARTICULATE ORGANIC-MATTER ; NITROGEN ISOTOPE SIGNATURES ; STABLE-ISOTOPES ; FRESH-WATER ; CARBON ; ESTUARY ; DELTA-C-13 ; PATTERNS ; NITRATE ; PHYTOPLANKTON
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325524
作者单位	[Kanaya, Gen] Natl Inst Environm Studies NIES, 16-2 Onogawa, Tsukuba, Ibaraki 3058506, Japan; [Yurlova, Natalia I.; Yadrenkina, Elena N.] Russian Acad Sci ISEA SB RAS, Inst Systemat & Ecol Anim, Siberian Branch, 11 Frunze St, Novosibirsk 630091, Russia; [Okano, Jun-ichi; Shikano, Shuichi] Tohoku Univ, Ctr Northeast Asian Studies, Aoba Ku, Sendai, Miyagi 9808576, Japan
推荐引用方式 GB/T 7714	Kanaya, Gen,Yurlova, Natalia I.,Yadrenkina, Elena N.,et al. Interannual changes in delta N-15 baseline in a lake-swamp-river food web: effects of summer precipitation in West Siberian forest steppe[J],2020,150(2):217-233.
APA	Kanaya, Gen,Yurlova, Natalia I.,Yadrenkina, Elena N.,Okano, Jun-ichi,&Shikano, Shuichi.(2020).Interannual changes in delta N-15 baseline in a lake-swamp-river food web: effects of summer precipitation in West Siberian forest steppe.BIOGEOCHEMISTRY,150(2),217-233.
MLA	Kanaya, Gen,et al."Interannual changes in delta N-15 baseline in a lake-swamp-river food web: effects of summer precipitation in West Siberian forest steppe".BIOGEOCHEMISTRY 150.2(2020):217-233.