- Title
- Effects of temperature and food quality on isotopic turnover and discrimination in a cladoceran
- Creator
- Masclaux, Hélène, Richoux, Nicole B
- Subject
- To be catalogued
- Date
- 2017
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/456216
- Identifier
- vital:75494
- Identifier
- xlink:href="https://doi.org/10.1007/s10452-016-9592-1"
- Description
- Our experimental study was designed to assess the effects of temperature on nitrogen isotope turnover and to measure the effects of temperature and food quality on the stable carbon and nitrogen isotope discrimination factors (Δ13C and Δ15N) in a cladoceran. For the first part of our study, Daphnia were fed with non-enriched or 15N-enriched Scenedesmus obliquus at 12, 15, 20, and 25 °C. For the second part, Daphnia were reared at 15, 20, and 25 °C on Scenedesmus or Cryptomonas sp. There were no clear effects of temperature on turnover rates of the nitrogen isotope of cladocerans. However, a general increase in Δ13C with increasing temperature was measured, regardless of the food source. Δ15N was also affected by temperature, but contrasting results were measured depending on the food source used. There were significant effects of food quality on Δ13C and Δ15N in Daphnia, as values obtained for Daphnia fed Scenedesmus were always higher than those obtained for Daphnia fed Cryptomonas. Our experiments produced discrimination factors that were very different from those usually considered in isotope studies and showed that the values used for isotope model implementation to analyze field data need to be adapted to environmental conditions.
- Format
- computer, online resource, application/pdf, 1 online resource (12 pages), pdf
- Publisher
- SpringerLink
- Language
- English
- Relation
- Aquatic Ecology, Masclaux, H. and Richoux, N.B., 2017. Effects of temperature and food quality on isotopic turnover and discrimination in a cladoceran. Aquatic Ecology, 51, pp.33-44, Aquatic Ecology volume 51 p. 33 2017 1573-5125
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the SpringerLink Terms of Use Statement ( https://link.springer.com/termsandconditions)
- Rights
- Closed Access
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Collections
Richoux, Nicole Bertine (Assoc Prof)
SDG 15. Life On Land
RU Department of Zoology and Entomology
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details | SOURCE1 | Effects of temperature and food quality on isotopic turnover and discrimination in a cladoceran.pdf | 772 KB | Adobe Acrobat PDF | View Details |