Role of food web structure on lipid bioaccumulation of organic contaminants by lake trout (Salvelinus namaycush)

1996 ◽  
Vol 53 (11) ◽  
pp. 2397-2407 ◽  
Author(s):  
E Bentzen ◽  
D RS Lean ◽  
W D Taylor ◽  
D Mackay
Keyword(s):  
Food Web ◽  
Organic Contaminants ◽  
Lake Trout ◽  
Salvelinus Namaycush ◽  
Food Web Structure ◽  
Web Structure

Coupling Modules in Space: A Landscape Theory

2011 ◽  
Author(s):  
Kevin S. McCann
Keyword(s):  
Food Web ◽  
Food Webs ◽  
Large Scale ◽  
Landscape Scale ◽  
Food Web Structure ◽  
Web Structure ◽  
Web Architecture ◽  
Individual Traits ◽  
Bird Feeder

This chapter examines food webs at the landscape scale by focusing on the large-scale food web architecture that is deeply constrained by space. It begins with a discussion of how variability in space, time, and food web structure, coupled with the ability of organisms to rapidly respond to variation, affect the maintenance of the food web and its functions. It then explains how individual traits such as body size and foraging behavior relate to food web structure in space and time. It also considers the role of spatial constraints on food webs and how the existence of fast–slow pathways coupled by mobile adaptive predators gives rise to spatial asynchrony in the resources. The chapter concludes with a review of some empirical examples to show that some food webs display the bird feeder effect and that resource coupling of distinct habitats appears to stabilize food webs.

Distribution and burdens of bioaccumulative contaminants in the Lake Erie food web: A review

2003 ◽  
Vol 11 (3) ◽  
pp. 141-160 ◽  
Author(s):  
Sarah B Gewurtz ◽  
Miriam L Diamond
Keyword(s):  
Food Web ◽  
Exotic Species ◽  
Organic Contaminants ◽  
Lake Erie ◽  
Trophic Levels ◽  
Algal Toxins ◽  
Food Web Structure ◽  
Chemical Contaminants ◽  
Web Structure ◽  
Internal Distribution

The bioaccumulation of organic contaminants in the Lake Erie food web is reviewed in context of the numerous changes experienced by the system. In the late 1960s, internal lake processes, related to the eutrophic status of the lake, minimized contaminant bioaccumulation despite high contaminant loadings. From the 1970s to 1980s contaminant concentrations decreased at different rates in many species of different trophic levels, coincident with decreased loadings to the lake. Since the early 1980s contaminant concentrations in biota have not changed consistently. Several factors have been proposed to account for these patterns, including reduced nutrient loadings and productivity, and the invasion of several exotic species such as zebra mussels. These factors have altered the food web structure and the internal distribution of contaminants in the lake. Emerging and continuing issues, such as climate change, invasions of additional exotic species, new chemical contaminants of concern, and algal toxins will likely impact contaminant dynamics in the future.Key words: Lake Erie, bioaccumulative contaminants, food web.

scholarly journals FOOD WEB STRUCTURE AND THE ROLE OF EPILITHIC BIOFILMS IN CAVE STREAMS

Ecology ◽  
2003 ◽  
Vol 84 (9) ◽  
pp. 2395-2406 ◽  
Author(s):  
K. S. Simon ◽  
E. F. Benfield ◽  
S. A. Macko
Keyword(s):  
Food Web ◽  
Food Web Structure ◽  
Web Structure ◽  
Epilithic Biofilms

Planktonic food web structure and potential carbon flow in the Lower River Rhine with a focus on the role of protozoans

2005 ◽  
Vol 21 (5) ◽  
pp. 535-549 ◽  
Author(s):  
Markus Weitere ◽  
Anja Scherwass ◽  
Karl-Theo Sieben ◽  
Hartmut Arndt
Keyword(s):  
Food Web ◽  
Carbon Flow ◽  
River Rhine ◽  
Food Web Structure ◽  
Planktonic Food ◽  
Web Structure ◽  
Potential Carbon

Unravelling the role of allochthonous aquatic resources to food web structure in a tropical riparian forest

2016 ◽  
Vol 85 (2) ◽  
pp. 525-536 ◽  
Author(s):  
Fátima C. Recalde ◽  
Thaís C. Postali ◽  
Gustavo Q. Romero
Keyword(s):  
Food Web ◽  
Riparian Forest ◽  
Food Web Structure ◽  
Aquatic Resources ◽  
Web Structure

scholarly journals Food-web structure and network theory: The role of connectance and size

2002 ◽  
Vol 99 (20) ◽  
pp. 12917-12922 ◽  
Author(s):  
J. A. Dunne ◽  
R. J. Williams ◽  
N. D. Martinez
Keyword(s):  
Food Web ◽  
Network Theory ◽  
Food Web Structure ◽  
Web Structure

scholarly journals The role of body mass in diet contiguity and food-web structure

2011 ◽  
Vol 80 (3) ◽  
pp. 632-639 ◽  
Author(s):  
Daniel B. Stouffer ◽  
Enrico L. Rezende ◽  
Luís A. Nunes Amaral
Keyword(s):  
Food Web ◽  
Body Mass ◽  
Food Web Structure ◽  
Web Structure
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