Results 51 to 60 of about 24,017 (211)

Using Stable Carbon and Nitrogen Isotopes to Evaluate Parrotfish Diet

Annals of Tropical Research, 2013
With limited inconclusive data provided by gut content analysis, stable isotope analysis has recently emerged to validate trophic position and dietary intake. In this study, a dual isotope approach was used to reveal parrotfish feeding.
Maria Elisa B. Gerona, Florence C. Evacitas   +1 more
doaj   +1 more source

Nitrogen Isotopes in the Global Ocean [PDF]

, 2013
Nitrogen is an essential nutrient for life. Its low abundance throughout much of the sunlit surface ocean limits the growth of primary producers that form the base of ocean ecosystems.
Somes, Christopher J., Somes, Christopher   +1 more
core  

Using stable isotopes of nitrogen and carbon to study seabird ecology: applications in the Mediterranean seabird community

Scientia Marina, 2003
The application of the stable isotope technique to ecological studies is becoming increasingly widespread. In the case of seabirds, stable isotopes of nitrogen and carbon have been mainly used as dietary tracers. This approach relieson the fact that food
Manuela G. Forero, Keith A. Hobson
doaj   +1 more source

Isotopic palaeodiet studies of Ancient Egyptian fauna and humans [PDF]

, 2005
We report here stable carbon and nitrogen isotope results from human and faunal bone collagen from samples taken from sites in the Egyptian Nile Valley and surrounding region, dating from the Predynastic (c. 5500 BC) through to the Dynastic (c.
Richards, M.P., Zakrzewski, S., Thompson, A.T., Shortland, A., Shortland, Andrew, Zakrzewski, Sonia R., Thompson, A. H., Richards, Michael P., Zakrzewski, S. R., Richards, M. ; https://orcid.org/, Shortland, A.J., Zakrzewski, S.R., Thompson, Alexandra H., Thompson, A.   +13 more
core   +1 more source

Structure and flow of carbon and nitrogen to the western Irish Sea Nephrops norvegicus fishery: a stable isotope approach. [PDF]

, 2008
PhDStable isotope analysis was used to describe the structure and flow of organic matter (carbon and nitrogen) from primary production in the water column to the benthos, and into secondary production that supports a fishery for the lobster Nephrops ...
Hill, Jacqueline Mary, Hill, Jacqueline M   +1 more
core  

stantis/Coast-Salish-wool-dogs-isotopes: Carbon and nitrogen isotopes for Mutton, SB Village Dog, and comparative dogs [PDF]

, 2023
Serial sections of dog hair were analyzed for carbon and nitrogen stable isotopes. The data, relevant R code for analysis and data visualization, and comparative dog data from archaeological sites throughout the Pacific Northwest are included in this ...
Chris Stantis
core   +1 more source

Different Responses in Root Water Uptake of Summer Maize to Planting Density and Nitrogen Fertilization

Frontiers in Plant Science, 2022
Modifying farming practices combined with breeding has the potential to improve water and nutrient use efficiency by regulating root growth, but achieving this goal requires phenotyping the roots, including their architecture and ability to take up water
Yang Gao, Jinsai Chen, Guangshuai Wang, Zhandong Liu, Weihao Sun, Yingying Zhang, Xiaoxian Zhang   +6 more
doaj   +1 more source

Diet–animal fractionation of nitrogen stable isotopes reflects the efficiency of nitrogen assimilation in ruminants [PDF]

British Journal of Nutrition, 2015
The natural abundance of15N in animal proteins (δ15Nanimal) is greater than that in the diet consumed by the animals (δ15Ndiet), with a discrimination factor (Δ15N = δ15Nanimal− δ15Ndiet) that is known to vary according to nutritional conditions.
Cantalapiedra-Hijar, Gonzalo, Ortigues Marty, Isabelle, Sepchat, Bernard, Agabriel, Jacques, Huneau, Jean-François, Fouillet, Hélène   +5 more
openaire   +3 more sources

Combined stable isotope and gut contents analysis of food webs in plant-dominated, shallow lakes [PDF]

, 2003
1. To determine feeding links between primary producers, invertebrates and fish, stable isotope analyses and gut content analyses of fish were conducted on the components of four shallow, eutrophic to hypertrophic, plant-dominated lakes. 2.
Susan Waldron, J. Iwan Jones, Jones, J.I., Waldron, S.   +3 more
core   +1 more source

Isotopic discrimination factors and nitrogen turnover rates in reared Atlantic bluefin tuna larvae (Thunnus thynnus): effects of maternal transmission

Scientia Marina, 2016
The use of stable isotope analysis to study animal diets requires estimates of isotopic turnover rates (half time, t50) and discrimination factors (Δ) for an accurate interpretation of trophic patterns.
Amaya Uriarte, Alberto García, Aurelio Ortega, Fernando de la Gándara, José Quintanilla, Raúl Laiz-Carrión   +5 more
doaj   +1 more source