Results 21 to 30 of about 24,017 (211)

The Preparation of Carbon and Nitrogen Stable Isotopes Reference Materials Using Sediments from the Bohai and East China Seas

Yankuang ceshi, 2017
The stable isotope of carbon and nitrogen (δ13C and δ15N) in marine sediments have received much attention as they can be used to trace the sources of organic matter and are helpful in understanding the carbon cycle, climate change and the transformation
QIN De-di, HE Xing-liang, ZHANG Yuan-yuan, LI Feng, CHEN Yu-feng, ZHANG Pei-yu   +5 more
doaj   +1 more source

Seasonal changes in the δ13C and δ15N signatures of the Lago Maggiore pelagic food web

Journal of Limnology, 2011
Seasonal variation in the relative contributions of littoral and pelagic food sources to the diets of open-water zooplankton and subsequent changes in their trophic positions were investigated with carbon and nitrogen Stable Isotope Analysis (SIA).
Marina MANCA, Anna VISCONTI
doaj   +1 more source

Comparative Study of Nitrogen Cycling Between a Bay With Riverine Input and a Bay Without Riverine Input, Inferred From Stable Isotopes

Frontiers in Marine Science, 2022
The eutrophication degree in the coastal bay has been increasing significantly for the past years, due to the increasing nutrient discharge. However, the factors controlling sources and nitrogen (N) cycling in the different types of bays are still poorly
Chunqing Chen, Qibin Lao, Qibin Lao, Youli Shen, Guangzhe Jin, Guangzhe Jin, Guangzhe Jin, Fajin Chen, Fajin Chen, Fajin Chen, Qizhong Su, Xuetie Lei, Xin Zhou, Xuan Lu, Qingmei Zhu, Qingmei Zhu, Qingmei Zhu, Guoqiang Liu, Guoqiang Liu   +18 more
doaj   +1 more source

Effect of dietary stable isotopic ratios of carbon and nitrogen on the extent of their incorporation into tissues of rats

Journal of Animal Science and Biotechnology, 2012
This study was conducted to investigate the effect of different dietary ratios of 13 C to 12 C or 15 N to 14 N on their relative incorporation into tissues.
Lv Wentao, Ju Tingting, Dong Bing, Yu Boyang, Yin Jingdong   +4 more
doaj   +1 more source

Amino Acid δ15N Can Detect Diet Effects on Pollution Risks for Yellow-Legged Gulls Overlooked by Trophic Position

Frontiers in Marine Science, 2021
The use of top-consumers as bioindicators of the health of food webs is hampered by uncertainties in their effective use of resources. In this study, the abundance of stable nitrogen isotopes in amino acids from homogenised eggs of the Yellow-legged Gull
Antonio Bode, Victoria Besada, Begoña Pérez-Fernández, Lucía Viñas   +3 more
doaj   +1 more source

Stable and radiogenic isotopes as tracers for soil degradation [PDF]

, 2008
Soil erosion seriously threatens mountain slopes. Direct measurement of soil erosion in the field is difficult and needs long term recording. However, stable and radiogenic isotopes are potential tracers for soil erosion estimation and would enable a ...
Schaub, Monika
core   +1 more source

The fate of nitrogen in the Zarin-Gol River receiving trout farm effluent

Scientific Reports, 2023
This study investigated the Zarrin-Gol River ecosystem in Iran to trace organic matter in the food web and evaluate the impact of aquaculture farm effluent using stable isotopes of nitrogen (δ15N) and carbon (δ13C).
Altin Ghojoghi, Rasoul Ghorbani, Rahman Patimar, Abdolrassoul Salmanmahiny, Rahmat Naddafi, Abdolazim Fazel, Timothy D. Jardine   +6 more
doaj   +1 more source

Combined use of stable isotopes and fallout radionuclides as soil erosion indicators in a forested mountain site, South Korea [PDF]

, 2013
The aim of this study is to assess and to validate the suitability of the stable nitrogen and carbon isotope signature as soil erosion indicators in a mountain forest site in South Korea.
Mabit, L., C. Alewell, T. Sandor, Meusburger, K., Park, J. -H., Sandor, T., L. Mabit, Alewell, C., J.-H. Park, K. Meusburger   +9 more
core   +1 more source

A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]

, 2003
1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (¹³C, &
Bearhop, S., Furness, R. W., Hilton, G.H., Furness, RW, Bearhop, S, Hilton, GM, Votier, S. C.; id_orcid, Waldron, S, Votier, SC, Furness, R.W., Waldron, S., Hilton, G. M.   +11 more
core   +1 more source

Determining trophic niche width: a novel approach using stable isotope analysis [PDF]

, 2004
1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Bearhop, S., Bearhop, Stuart, Fuller, R.A., Waldron, S., Adams, C.E., Macleod, H.   +5 more
core   +1 more source