scholarly journals Stable isotope patterns in lake food webs reflect productivity gradients

Ecosphere ◽  
2020 ◽  
Vol 11 (9) ◽  
Author(s):  
Kyle D. Zimmer ◽  
Ryan C. Grow ◽  
Angela R. Tipp ◽  
Brian R. Herwig ◽  
David F. Staples ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Productivity Gradients

Current methods and future directions in avian diet analysis

The Auk ◽  
2021 ◽  
Author(s):  
Brandon D Hoenig ◽  
Allison M Snider ◽  
Anna M Forsman ◽  
Keith A Hobson ◽  
Steven C Latta ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Dietary Habits ◽  
Isotope Analysis ◽  
Diet Analysis ◽  
Unified Framework ◽  
Future Directions ◽  
Laboratory Techniques ◽  
Prey Identification

Abstract Identifying the composition of avian diets is a critical step in characterizing the roles of birds within ecosystems. However, because birds are a diverse taxonomic group with equally diverse dietary habits, gaining an accurate and thorough understanding of avian diet can be difficult. In addition to overcoming the inherent difficulties of studying birds, the field is advancing rapidly, and researchers are challenged with a myriad of methods to study avian diet, a task that has only become more difficult with the introduction of laboratory techniques to dietary studies. Because methodology drives inference, it is important that researchers are aware of the capabilities and limitations of each method to ensure the results of their study are interpreted correctly. However, few reviews exist which detail each of the traditional and laboratory techniques used in dietary studies, with even fewer framing these methods through a bird-specific lens. Here, we discuss the strengths and limitations of morphological prey identification, DNA-based techniques, stable isotope analysis, and the tracing of dietary biomolecules throughout food webs. We identify areas of improvement for each method, provide instances in which the combination of techniques can yield the most comprehensive findings, introduce potential avenues for combining results from each technique within a unified framework, and present recommendations for the future focus of avian dietary research.

scholarly journals Tackling the jelly web: Trophic ecology of gelatinous zooplankton in oceanic food webs of the eastern tropical Atlantic assessed by stable isotope analysis

2020 ◽  
Author(s):  
Xupeng Chi ◽  
Jan Dierking ◽  
Henk‐Jan Hoving ◽  
Florian Lüskow ◽  
Anneke Denda ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Trophic Ecology ◽  
Isotope Analysis ◽  
Gelatinous Zooplankton ◽  
Tropical Atlantic ◽  
Oceanic Food Webs

scholarly journals Nitrogen-stable isotope signatures in estuarine food webs: A record of increasing urbanization in coastal watersheds

1997 ◽  
Vol 42 (5) ◽  
pp. 930-937 ◽  
Author(s):  
James W. McClelland ◽  
Ivan Valiela ◽  
Robert H. Michener
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Nitrogen Stable Isotope ◽  
Coastal Watersheds ◽  
Stable Isotope Signatures

Stable isotope analysis of food webs in wetland areas of Lake Balaton, Hungary abb;5

1999 ◽  
Vol 146 (1) ◽  
pp. 117-128 ◽  
Author(s):  
István Tátrai ◽  
Kálmán Mátyás ◽  
János Korponai ◽  
Gábor Paulovits ◽  
Piroska Pomogyi ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Lake Balaton

scholarly journals Stable Isotope Food Web Analysis of a Large Subtropical Lake: Alternative Explanations for15N Enrichment of Pelagic vs. Littoral Fisheries

2003 ◽  
Vol 3 ◽  
pp. 613-622 ◽  
Author(s):  
Karl E. Havens ◽  
Binhe Gu ◽  
Brian Fry ◽  
Carol Kendall
Keyword(s):  
Stable Isotope ◽  
Food Web ◽  
Food Webs ◽  
Trophic Level ◽  
Stable Isotope Ratio ◽  
Pelagic Zone ◽  
Primary Producers ◽  
Subtropical Lake ◽  
Primary Consumers ◽  
Habitat Enrichment

The food webs of littoral, pelagic, and littoral-pelagic ecotone (interface) regions of a large subtropical lake were investigated using stable isotope ratio methods, expanding the focus of a previous fish-only study to include other food web components such as primary producers and invertebrates. In these food webs, δ13C increased ~4o/oo and δ15N increased ~10o/oo from primary producers to fish. The δ15N of fish was ~9o/oo in the littoral zone, ~10 o/oo in the ecotone, and ~12o/oo in the pelagic zone. The cross-habitat enrichment in fish15N corresponded with both an increase in the size of fish and an increase in the δ15N of primary consumers (mollusks). Despite larger body size in the pelagic zone, fish in all three habitats appear to occur at the same average trophic level (TL = 4), assuming an enrichment factor of 3.4o/oo per trophic level, and normalizing to the δ15N of primary consumers.

scholarly journals Different transfer pathways of an organochlorine pesticide across marine tropical food webs assessed with stable isotope analysis

PLoS ONE ◽  
2018 ◽  
Vol 13 (2) ◽  
pp. e0191335 ◽  
Author(s):  
Charlotte R. Dromard ◽  
Yolande Bouchon-Navaro ◽  
Sébastien Cordonnier ◽  
Mathilde Guéné ◽  
Mireille Harmelin-Vivien ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Organochlorine Pesticide ◽  
Stable Isotope Analysis ◽  
Isotope Analysis

An assessment of sample processing methods for stable isotope analyses of marine food webs

2006 ◽  
Vol 336 (2) ◽  
pp. 254-261 ◽  
Author(s):  
Sirka Carabel ◽  
Enrique Godínez-Domínguez ◽  
Patricia Verísimo ◽  
Luís Fernández ◽  
Juan Freire
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Sample Processing ◽  
Processing Methods ◽  
Stable Isotope Analyses ◽  
Marine Food Webs ◽  
Marine Food ◽  
Isotope Analyses

Effects of terrestrial input on macrobenthic food webs of coastal sea are detected by stable isotope analysis in Gaeta Gulf

2015 ◽  
Vol 154 ◽  
pp. 158-168 ◽  
Author(s):  
Giulio Careddu ◽  
Maria Letizia Costantini ◽  
Edoardo Calizza ◽  
Pasquale Carlino ◽  
Flavia Bentivoglio ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Coastal Sea ◽  
Terrestrial Input

scholarly journals Tracing carbon flow through coral reef food webs using a compound-specific stable isotope approach

Oecologia ◽  
2015 ◽  
Vol 180 (3) ◽  
pp. 809-821 ◽  
Author(s):  
Kelton W. McMahon ◽  
Simon R. Thorrold ◽  
Leah A. Houghton ◽  
Michael L. Berumen
Keyword(s):  
Coral Reef ◽  
Stable Isotope ◽  
Food Webs ◽  
Carbon Flow ◽  
Flow Through

Variations in Stable Isotope Fractionation of Hg in Food Webs of Arctic Lakes

2009 ◽  
Vol 43 (24) ◽  
pp. 9148-9154 ◽  
Author(s):  
Nikolaus Gantner ◽  
Holger Hintelmann ◽  
Wang Zheng ◽  
Derek C. Muir
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Isotope Fractionation ◽  
Arctic Lakes ◽  
Stable Isotope Fractionation
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