Assimilation of marine-derived nutrients from anadromous Rainbow Smelt in an eastern North American riverine food web: evidence from stable-isotope and fatty acid analysis

2018 ◽  
Vol 37 (4) ◽  
pp. 747-759 ◽  
Author(s):  
Sean J. Landsman ◽  
Kurt M. Samways ◽  
Brian Hayden ◽  
Kyle M. Knysh ◽  
Michael R. van den Heuvel
Keyword(s):  
Fatty Acid ◽  
Stable Isotope ◽  
Food Web ◽  
North American ◽  
Fatty Acid Analysis ◽  
Rainbow Smelt ◽  
Marine Derived Nutrients

scholarly journals Dietary and seasonal variability in trophic relations at the base of the North Sea pelagic food web revealed by stable isotope and fatty acid analysis

2018 ◽  
Vol 141 ◽  
pp. 61-70 ◽  
Author(s):  
Katherina L. Schoo ◽  
Maarten Boersma ◽  
Arne M. Malzahn ◽  
Martin G.J. Löder ◽  
Karen H. Wiltshire ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Stable Isotope ◽  
Food Web ◽  
North Sea ◽  
Seasonal Variability ◽  
Fatty Acid Analysis ◽  
Trophic Relations ◽  
The North ◽  
Pelagic Food Web ◽  
The North Sea

A stable isotope evaluation of the structure and spatial heterogeneity of a Lake Superior food web

2000 ◽  
Vol 57 (7) ◽  
pp. 1395-1403 ◽  
Author(s):  
Chris J Harvey ◽  
James F Kitchell
Keyword(s):  
Stable Isotope ◽  
Spatial Heterogeneity ◽  
Food Web ◽  
Lake Trout ◽  
Trophic Position ◽  
Lake Superior ◽  
Salvelinus Namaycush ◽  
Trophic Relationships ◽  
Rainbow Smelt ◽  
Western Lake

We used stable isotope analysis to derive trophic relationships and movement patterns for components of the western Lake Superior food web. Trophic linkages implied by previous gut content studies were only marginally supported by stable isotope data. Siscowet lake trout (Salvelinus namaycush siscowet) were the top predators, and trophic overlap between siscowet and lean lake trout (Salvelinus namaycush) was low. Exotic Pacific salmon (Oncorhynchus spp.) occupied a lower trophic position than native piscivores because the latter relied more on coregonids. To evaluate spatial heterogeneity of the food web, we assumed that the adjacent cities of Duluth and Superior (DS) were a point source of 15N, and we measured isotopes of organisms close to and far from DS. Slimy sculpin (Cottus cognatus) were enriched in the DS area relative to other sites, implying that they are relatively sedentary. Rainbow smelt (Osmerus mordax) showed no differences at any sites, implying high vagility. Other organisms showed differences that could not be attributed to DS, implying that other mechanisms, such as trophic ontogeny, were influencing their isotopic signatures.

Tracing carbon flow in an arctic marine food web using fatty acid-stable isotope analysis

Oecologia ◽  
2008 ◽  
Vol 157 (1) ◽  
pp. 117-129 ◽  
Author(s):  
S. M. Budge ◽  
M. J. Wooller ◽  
A. M. Springer ◽  
S. J. Iverson ◽  
C. P. McRoy ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Stable Isotope ◽  
Food Web ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Carbon Flow ◽  
Marine Food Web ◽  
Marine Food ◽  
Acid Stable

Summer diet of beluga whales inferred by fatty acid analysis of the eastern Beaufort Sea food web

2009 ◽  
Vol 374 (1) ◽  
pp. 12-18 ◽  
Author(s):  
L.L. Loseto ◽  
G.A. Stern ◽  
T.L. Connelly ◽  
D. Deibel ◽  
B. Gemmill ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Food Web ◽  
Beaufort Sea ◽  
Fatty Acid Analysis ◽  
Beluga Whales
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