Advertisement

Food Web Structure and Its Controls II

  • Ivan Valiela
Chapter

Abstract

The previous chapter highlighted the influence of consumers on their food resources, and defined some consequences of such top-down controls. Here, we discuss how resources might influence producers and consumers, effects that can cascade upwards through food webs. We first review selected cases of bottom-up control, then look at evidence of interaction of top-down and bottom-up controls. We end the chapter by examining how both top-down and bottom-up controls are increasingly subject to external forcing by climate-driven change and human activities.

Keywords

Salt Marsh Bacterial Abundance Chinstrap Penguin Emperor Penguin Penguin Population 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer-Verlag New York 2015

Authors and Affiliations

  1. 1.Distinguished Scientist The Ecosystems CenterMarine Biological LaboratoryWoods HoleUSA

Personalised recommendations