Effect of trans-reservoir water supply on carbon and nitrogen stable isotope composition in hydrologically connected reservoirs in China

2016 ◽  
Vol 35 (5) ◽  
pp. 1117-1126 ◽  
Author(s):  
Huajun Zhang ◽  
Liang Peng ◽  
Binhe Gu ◽  
Bo-Ping Han
Keyword(s):  
Stable Isotope ◽  
Water Supply ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Reservoir Water ◽  
Carbon And Nitrogen

scholarly journals Trophic Relationships and Habitat Preferences of Delphinids from the Southeastern Brazilian Coast Determined by Carbon and Nitrogen Stable Isotope Composition

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e82205 ◽  
Author(s):  
Tatiana Lemos Bisi ◽  
Paulo Renato Dorneles ◽  
José Lailson-Brito ◽  
Gilles Lepoint ◽  
Alexandre de Freitas Azevedo ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Habitat Preferences ◽  
Trophic Relationships ◽  
Brazilian Coast ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen

Alteration of the carbon and nitrogen stable isotope composition of beef by substitution of grass silage with maize silage

2005 ◽  
Vol 19 (14) ◽  
pp. 1937-1942 ◽  
Author(s):  
Bojlul Bahar ◽  
Frank J. Monahan ◽  
Aidan P. Moloney ◽  
Padraig O'Kiely ◽  
Charlie M. Scrimgeour ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Maize Silage ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen ◽  
Grass Silage

scholarly journals Spatio-temporal stable isotope variation of a benthic primary consumer in a simple food web in a strongly acidic lake

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7890 ◽  
Author(s):  
Hideyuki Doi ◽  
Eisuke Kikuchi ◽  
Shigeto Takagi ◽  
Shuichi Shikano
Keyword(s):  
Stable Isotope ◽  
Temporal Variation ◽  
Food Web ◽  
Isotope Composition ◽  
Isotope Ratios ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Chironomid Larvae ◽  
Carbon And Nitrogen ◽  
Spatio Temporal

Analysis of aquatic food webs is typically undertaken using carbon and nitrogen stable isotope composition of consumer and producer species. However, the trophic consequences of spatio-temporal variation in the isotope composition of consumers have not been well evaluated. Lake Katanuma, Japan, is highly acidic and has only one dominant species of benthic alga and one planktonic microalga, making it a prime system for studying trophic relationships between primary consumers and producers. In this simple lake food web, we conducted a field survey to evaluate spatial and temporal variation in the carbon and nitrogen stable isotope composition of a chironomid larvae in association with a single benthic and planktonic alga. We found a significant correlation between carbon stable isotope ratios of the chironomid larvae and the benthic diatom species in the lake. Thus, chironomid larvae may represent a reliable isotopic baseline for estimating isotope values in benthic diatoms. However, although the correlation held in shallow water, at four m depths, there was no significant relationship between the isotope ratios of chironomids and benthic diatoms, probably because deep-water larvae spend part of their life cycle migrating from the lake shore to deeper water. The differing isotope ratios of deeper chironomid tissues likely reflect the feeding history of individuals during this migration.

scholarly journals Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)

2017 ◽  
Vol 31 (2) ◽  
pp. 229-240
Author(s):  
G. Wilson Fernandes ◽  
Heitor Monteiro Duarte ◽  
Fernando A. O. Silveira ◽  
Fernando Broetto ◽  
Ulrich Lüttge ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Composition ◽  
Stable Isotope Composition ◽  
Nitrogen Stable Isotope ◽  
Carbon And Nitrogen

scholarly journals The carbon and nitrogen ecophysiologies of two endemic tropical orchids mirrors those of their temperate relatives and the local environment

2016 ◽  
Vol 3 (11) ◽  
pp. 160427 ◽  
Author(s):  
Nicole A. Hynson
Keyword(s):  
Stable Isotope ◽  
Evolutionary History ◽  
Isotope Composition ◽  
Local Environment ◽  
Nitrogen Stable Isotope ◽  
Orchid Species ◽  
Carbon And Nitrogen ◽  
Terrestrial Orchids ◽  
Nitrogen Concentrations ◽  
Plant Families

Orchids are one of the most widely distributed plant families. However, current research on the ecophysiology of terrestrial orchids is biased towards temperate species. Thus, it is currently unknown whether tropical terrestrial orchids belong to similar trophic guilds as their temperate relatives. To examine the ecophysiologies of two tropical terrestrial orchids, I analysed the carbon and nitrogen stable isotope compositions and nitrogen concentrations of the Hawaiian endemics Anoectochilus sandvicensis and Liparis hawaiensis . I compared these values with those of surrounding vegetation and their temperate relatives. I found that A. sandvicensis was consistently enriched in the heavy isotope of nitrogen ( 15 N) and had higher nitrogen (N) concentrations than surrounding vegetation, and these values were even higher than those of its temperate relatives. Carbon stable isotope composition among populations of A. sandvicensis varied by island. These results point to local environment and evolutionary history determining the ecophysiology of this species. Whereas L.hawaiensis was also enriched in 15 N and had on average higher N concentrations than surrounding vegetation, these values were not significantly different from temperate relatives, indicating that evolutionary history may be a stronger predictor of this orchid species' ecophysiology than environment. I suggest that both Hawaiian species are potentially partially mycoheterotrophic.

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