Isotope Analysis in Ecology

Batch culture and species effects modulate the decoupling between diatom frustule-bound and biomass nitrogen isotope signatures

This study shows that diatom frustule-bound nitrogen isotope signatures (δ15NDB) do not follow typical fractionation dynamics and instead reflect newly assimilated nitrate, not internal pools.

Taxon-specific differences in C and N cycling and metabolic activity of intertidal organisms: Part A - Short-term processes

The paper investigates short-term carbon and nitrogen cycling and metabolic activity of intertidal organisms in response to enriched bacterioplankton in summer and autumn.

Mutualism in disguise? Isotopic evidence for nutrient transfer from a carnivorous pitcher plant to its insect prey

The paper measures nitrogen isotopic enrichment in wasps living in Darlingtonia californica pitcher plants to assess if nutrient transfer occurs from the plant to its insect prey.

Optimal Maternal Feeding Isotopic Niche: influence of breeder trophic behaviour on larval growth and survival in bluefin tuna species

This study examines how maternal trophic behavior influences larval growth and survival in bluefin tunas by analyzing isotopic signatures and growth rates across multiple populations.

Stable isotope insights into artificial reef effects of floating offshore energy structures in Norwegian North Sea codfishes

This study uses stable isotopes to assess how offshore energy structures affect codfish diet and habitat use in the Norwegian North Sea.

Trophic specialization enhances growth performance in larvae of southern bluefin, albacore, and skipjack tunas from the eastern Indian Ocean

This study examines how trophic specialization affects larval growth in three tuna species, finding that optimal growth correlates with narrower trophic niches and lower trophic positions.

What determines trophic niche breadth? A global analysis of freshwater fishes using isospaces

This study uses stable isotope analysis to examine trophic niche breadth in freshwater fishes, finding that environmental factors and species traits influence isospace size.

Trophic adaptation of large terrestrial omnivores to global change

This study shows that large terrestrial omnivores, like bears, adjust their trophic positions in response to changes in primary productivity and growing season length.

Should elephants graze or browse? The nutritional and functional consequences of dietary variation in a mixed-feeding megaherbivore

This study examines the nutritional value of browsing versus grazing in Asian elephants, finding no significant difference in crude protein content between the two diets.

Stable isotopic composition of Antarctic and Patagonian marine mammals collected before and during industrial-scale whaling: assessing the baseline for long-term changes in the marine ecosystem

This study analyzes isotopic data from historical marine mammal specimens to assess pre- and post-industrial whaling changes in trophic structure and foraging ecology.

Divergent realized ecological niches of sister species of the Antarctic amphipod genus Charcotia

This study compares the trophic habits of two Antarctic amphipod species using stable isotope analysis, finding niche differentiation based on geographic and depth-related isotopic patterns.

Origin, Trophic Transfer And Recycling Of Particulate Organic Matter In The Waters Of Two Upwelling Bays Of Humboldt Current System: Insights From Compound-Specific Isotopic Compositions Of Amino Acids

The paper measures isotopic signatures of amino acids in particulate organic matter from two upwelling bays to study its origins, trophic transfer, and heterotrophic reworking.

Isotope analysis of bird eye lens provides early-life information

This study uses isotope analysis of bird eye lenses to reconstruct early-life dietary and environmental history, showing that lens isotopes reflect prenatal and postnatal diet changes.