Metabolic fractionation of stable carbon isotopes: implications of different proximate compositions for studies of the aquatic food webs using δ 13 C data

Oecologia ◽  
1998 ◽  
Vol 115 (3) ◽  
pp. 337-343 ◽  
Author(s):  
U. Focken ◽  
K. Becker
Keyword(s):  
Food Webs ◽  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Stable Carbon ◽  
Aquatic Food Webs ◽  
Aquatic Food

Emergent microbial food webs in ecological treatment systems for wastewater: Insight from stable carbon isotopes

2015 ◽  
Vol 78 ◽  
pp. 62-71 ◽  
Author(s):  
Nathan T. Barlet ◽  
Stewart A.W. Diemont ◽  
Mark A. Teece ◽  
Kimberly L. Schulz
Keyword(s):  
Food Webs ◽  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Stable Carbon ◽  
Microbial Food Webs ◽  
Ecological Treatment

THERMAL ALTERATION OF PRECAMBRIAN MICROFOSSILS: APPLICATIONS TO THE STUDY OF STABLE CARBON ISOTOPES ON THE EARLY EARTH

2020 ◽  
Author(s):  
Jeffrey Osterhout ◽  
◽  
J. William Schopf ◽  
Anatoliy B. Kudryavtsev ◽  
K.D. McKeegan
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Early Earth ◽  
Stable Carbon ◽  
Thermal Alteration

scholarly journals Elevated temperature and browning increase dietary methylmercury, but decrease essential fatty acids at the base of lake food webs

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pianpian Wu ◽  
Martin J. Kainz ◽  
Fernando Valdés ◽  
Siwen Zheng ◽  
Katharina Winter ◽  
...  
Keyword(s):  
Climate Change ◽  
Fatty Acids ◽  
Organic Matter ◽  
Food Webs ◽  
Essential Fatty Acids ◽  
Trophic Levels ◽  
Climate Change Scenarios ◽  
Essential Nutrients ◽  
Aquatic Food Webs ◽  
Aquatic Food

AbstractClimate change scenarios predict increases in temperature and organic matter supply from land to water, which affect trophic transfer of nutrients and contaminants in aquatic food webs. How essential nutrients, such as polyunsaturated fatty acids (PUFA), and potentially toxic contaminants, such as methylmercury (MeHg), at the base of aquatic food webs will be affected under climate change scenarios, remains unclear. The objective of this outdoor mesocosm study was to examine how increased water temperature and terrestrially-derived dissolved organic matter supply (tDOM; i.e., lake browning), and the interaction of both, will influence MeHg and PUFA in organisms at the base of food webs (i.e. seston; the most edible plankton size for zooplankton) in subalpine lake ecosystems. The interaction of higher temperature and tDOM increased the burden of MeHg in seston (< 40 μm) and larger sized plankton (microplankton; 40–200 μm), while the MeHg content per unit biomass remained stable. However, PUFA decreased in seston, but increased in microplankton, consisting mainly of filamentous algae, which are less readily bioavailable to zooplankton. We revealed elevated dietary exposure to MeHg, yet decreased supply of dietary PUFA to aquatic consumers with increasing temperature and tDOM supply. This experimental study provides evidence that the overall food quality at the base of aquatic food webs deteriorates during ongoing climate change scenarios by increasing the supply of toxic MeHg and lowering the dietary access to essential nutrients of consumers at higher trophic levels.

scholarly journals Eutrophication induces shifts in the trophic position of invertebrates in aquatic food webs

Ecology ◽  
2020 ◽  
Author(s):  
Gea H. Lee ◽  
J. Arie Vonk ◽  
Ralf C.M. Verdonschot ◽  
Michiel H.S. Kraak ◽  
Piet F.M. Verdonschot ◽  
...  
Keyword(s):  
Food Webs ◽  
Trophic Position ◽  
Aquatic Food Webs ◽  
Aquatic Food

Carbonization of Carbonates and Fractionation of Stable Carbon Isotopes in a Dynamic Slip Zone

2020 ◽  
Vol 58 (9) ◽  
pp. 981-993
Author(s):  
Yu. A. Morozov ◽  
V. S. Sevastianov ◽  
A. Yu. Yurchenko ◽  
O. V. Kuznetsova
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Slip Zone ◽  
Stable Carbon ◽  
Dynamic Slip

Using Stable Carbon Isotopes to Distinguish Wild from Captive Wolves

2011 ◽  
Vol 18 (3) ◽  
pp. 253-264 ◽  
Author(s):  
Roland Kays ◽  
Robert S. Feranec
Keyword(s):  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Stable Carbon

Dehalogenation of α-hexachlorocyclohexane by iron sulfide nanoparticles: Study of reaction mechanism with stable carbon isotopes and pH variations

2021 ◽  
pp. 149672
Author(s):  
Silviu-Laurentiu Badea ◽  
Diana-Ionela Stegarus ◽  
Violeta-Carolina Niculescu ◽  
Stanica Enache ◽  
Amalia Soare ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Carbon Isotopes ◽  
Stable Carbon Isotopes ◽  
Iron Sulfide ◽  
Stable Carbon ◽  
Ph Variations
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