Intraguild Predation, Invertebrate Predators, and Trophic Cascades in Lake Food Webs

2002 ◽  
Vol 218 (1) ◽  
pp. 111-128 ◽  
Author(s):  
DEBORAH R. HART
Keyword(s):  
Food Webs ◽  
Intraguild Predation ◽  
Trophic Cascades ◽  
Invertebrate Predators

scholarly journals Mammal‐induced trophic cascades in invertebrate food webs are modulated by grazing intensity in subalpine grassland

2017 ◽  
Vol 86 (6) ◽  
pp. 1434-1446 ◽  
Author(s):  
Martijn L. Vandegehuchte ◽  
Martin Schütz ◽  
Frederic Schaetzen ◽  
Anita C. Risch
Keyword(s):  
Food Webs ◽  
Trophic Cascades ◽  
Grazing Intensity

More Modules

2011 ◽  
Author(s):  
Kevin S. McCann
Keyword(s):  
Population Dynamics ◽  
Food Webs ◽  
Empirical Evidence ◽  
Intraguild Predation ◽  
Weak Interactions ◽  
Apparent Competition ◽  
Trade Offs ◽  
Variable Population ◽  
The Stability

This chapter considers four-species modules and the role of generalism (effectively a three-species module with a consumer feeding on two resources). It first examines how generalists affect the dynamics of food webs by focusing on a set of modules that contrast generalist consumer dynamics relative to the specialist case. It then discusses organismal trade-offs that play a role in governing the diamond food web module and the intraguild predation module, arguing that such tradeoffs influence the flux of matter, the organization of interaction strengths, and ultimately the stability of communities. The chapter also reviews empirical evidence showing that apparent competition and the diamond module with and without intraguild predation are ubiquitous, and that weak interactions in simple modules seem to promote less variable population dynamics.

scholarly journals Landscape variation influences trophic cascades in dengue vector food webs

2018 ◽  
Vol 4 (2) ◽  
pp. eaap9534 ◽  
Author(s):  
Robbie Weterings ◽  
Chanin Umponstira ◽  
Hannah L. Buckley
Keyword(s):  
Food Webs ◽  
Trophic Cascades ◽  
Dengue Vector ◽  
Landscape Variation

Intraguild predation enhances biodiversity and functioning in complex food webs

Ecology ◽  
2019 ◽  
Vol 100 (3) ◽  
Author(s):  
Shaopeng Wang ◽  
Ulrich Brose ◽  
Dominique Gravel
Keyword(s):  
Food Webs ◽  
Intraguild Predation

Weeds mediate the level of intraguild predation in arthropod food webs

2013 ◽  
Vol 137 (9) ◽  
pp. 702-710 ◽  
Author(s):  
P. Tixier ◽  
D. Dagneaux ◽  
G. Mollot ◽  
F. Vinatier ◽  
P-F. Duyck
Keyword(s):  
Food Webs ◽  
Intraguild Predation

scholarly journals Beyond the fish-Daphnia paradigm: testing the potential for Neoplea striola (Hemiptera: Pleidae) to cause a trophic cascade in subtropical ponds

2021 ◽  
Author(s):  
Chase J. Rakowski ◽  
Mathew A. Leibold
Keyword(s):  
Food Web ◽  
Trophic Cascade ◽  
Trophic Cascades ◽  
Zooplankton Community ◽  
Trophic Levels ◽  
Food Web Interactions ◽  
Top Predators ◽  
Invertebrate Predators ◽  
Consumption Rates ◽  
Central Texas

AbstractTrophic cascades, or indirect effects of predators on non-adjacent lower trophic levels, are thought to pervade diverse ecosystems, though they tend to be stronger in aquatic ecosystems. Most research on freshwater trophic cascades focused on temperate lakes where Daphnia tend to dominate the zooplankton community, and these studies identified that Daphnia plays a key role in facilitating trophic cascades by linking fish to algae with strong food web interactions. However, Daphnia are rare or absent in most tropical and subtropical lowland freshwaters, and many invertebrate predators have received little attention in food web research despite being common and widespread. Therefore, we aimed to test whether trophic cascades are possible in small warmwater ponds where small invertebrates are the top predators and Daphnia are absent. We collected naturally occurring plankton communities from small fishless water bodies in central Texas and propagated them in replicate pond mesocosms. We removed zooplankton from some mesocosms, left the plankton community intact in others, and added one of two densities of the predaceous insect Neoplea striola to others. Following an incubation period we then compared biomasses of plankton groups to assess food web effects between the trophic levels including whether Neoplea caused a trophic cascade by reducing zooplankton. The zooplankton community became dominated by copepods which prefer large phytoplankton and exhibit a fast escape response. Perhaps due to these qualities of the copepods and perhaps due to slow consumption rates by Neoplea on key grazers, no food web effects were found other than zooplankton marginally reducing large phytoplankton. More research is needed to understand the behavior and ecology of Neoplea, but trophic cascades may generally be weak or absent in subtropical and tropical lowland freshwaters where Daphnia is rare.

Exploring Trophic Cascades in Lake Food Webs with a Spreadsheet Model

2016 ◽  
pp. 111-115
Author(s):  
Kyle A. Emery ◽  
Jessica A. Gephart ◽  
Grace M. Wilkinson ◽  
Alice F. Besterman ◽  
Michael L. Pace
Keyword(s):  
Food Webs ◽  
Trophic Cascades ◽  
Spreadsheet Model
Sign in / Sign up

Export Citation Format

Share Document