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Quantitative Viral EcologyDynamics of Viruses and Their Microbial Hosts$
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Joshua S. Weitz

Print publication date: 2016

Print ISBN-13: 9780691161549

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691161549.001.0001

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Virus-Host Dynamics in a Complex Milieu

Virus-Host Dynamics in a Complex Milieu

Chapter:
(p.201) Chapter Seven Virus-Host Dynamics in a Complex Milieu
Source:
Quantitative Viral Ecology
Author(s):

Joshua S. Weitz

Publisher:
Princeton University Press
DOI:10.23943/princeton/9780691161549.003.0007

This chapter introduces a series of dynamic models for exploring the mechanisms underlying the emergent features of complex ecosystems. Models of complex food webs including viral parasites reflect innovations in the study of basic interactions as well as the quantitative estimation of life history traits. These models can be used to investigate the variation in the effect of viruses on ecological processes, given three key features: (i) complex multistrain and multispecies communities, (ii) nutrient regeneration via viral lysis of hosts, and (iii) competition between zooplankton and viruses for hosts. Models predict that when viruses regenerate nutrients, both resources and viruses will increase in concentration. When viruses are included in ecosystem models they are found to stimulate ecosystem-level functioning despite having negative effects on target hosts. Few models combine virus–host interactions with a consideration of complex nutrient and trophic dynamics; therefore, a synthesis remains incomplete and should be the subject of ongoing work.

Keywords:   viruses, viral effects, marine surface waters, virus hosts, grazers, dynamic models, complex ecosystems, food webs, viral parasites

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