Novel and disrupted trophic links following invasion in freshwater ecosystems

M.C. Jackson, R.J. Wasserman, J. Grey, Anthony Ricciardi, J.T.A. Dick, Mhairi Alexander

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

When invasive species become integrated within a food web, they may have numerous direct and indirect impacts on the native community by creating novel trophic links, and modifying or disrupting existing ones. Here we discuss these impacts by drawing on examples from freshwater ecosystems, and argue that future research should quantify changes in such trophic interactions (i.e. the links in a food web), rather than simply focusing on traditional measures of diversity or abundance (i.e. the nodes in a food web). We conceptualise the impacts of invaders on trophic links as either direct consumption, indirect trophic effects (e.g. cascading interactions, competition) or indirect nontrophic effects (e.g. behaviour mediated). We then discuss how invader impacts on trophic links are context-dependent, varying with invader traits (e.g. feeding rates), abiotic variables (e.g. temperature, pH) and the traits of the receiving community (e.g. predators or competitors). Co-occurring invasive species and other environmental stressors, such as climate change, will also influence invader impacts on trophic links. Finally, we discuss the available methods to identify new food web interactions following invasion and to quantify how invasive species disrupt existing feeding links. Methods include direct observations in the field, laboratory trials (e.g. to quantify functional responses) and controlled mesocosm experiments to elucidate impacts on food webs. Field studies which use tracer techniques, such as stable isotope analyses, allow diet characterisation of both invaders and interacting native species in the wild. We conclude that invasive species often drastically alter food webs by creating and disrupting trophic links, and future research should be directed particularly towards disentangling the effects of invaders from other environmental stressors.

Original languageEnglish
Title of host publicationNetworks of Invasion
Subtitle of host publicationEmpirical Evidence and Case Studies
EditorsDavid A. Bohan, Alex J. Dumbrell, François Massol
PublisherElsevier Limited
Pages55-97
Volume57
ISBN (Print)978-0-12-813328-6
DOIs
Publication statusPublished - 2017

Publication series

NameAdvances in Ecological Research
PublisherElsevier Limited
Volume57

Fingerprint

freshwater ecosystem
food web
invasive species
trophic interaction
functional response
mesocosm
native species
stable isotope
tracer
predator
diet
climate change
effect
experiment
temperature

Cite this

Jackson, M. C., Wasserman, R. J., Grey, J., Ricciardi, A., Dick, J. T. A., & Alexander, M. (2017). Novel and disrupted trophic links following invasion in freshwater ecosystems. In D. A. Bohan, A. J. Dumbrell, & F. Massol (Eds.), Networks of Invasion: Empirical Evidence and Case Studies (Vol. 57, pp. 55-97). (Advances in Ecological Research; Vol. 57). Elsevier Limited. https://doi.org/10.1016/bs.aecr.2016.10.006
Jackson, M.C. ; Wasserman, R.J. ; Grey, J. ; Ricciardi, Anthony ; Dick, J.T.A. ; Alexander, Mhairi. / Novel and disrupted trophic links following invasion in freshwater ecosystems. Networks of Invasion: Empirical Evidence and Case Studies. editor / David A. Bohan ; Alex J. Dumbrell ; François Massol. Vol. 57 Elsevier Limited, 2017. pp. 55-97 (Advances in Ecological Research).
@inbook{ff23ad45d288468ba90f2bbcd6564dfe,
title = "Novel and disrupted trophic links following invasion in freshwater ecosystems",
abstract = "When invasive species become integrated within a food web, they may have numerous direct and indirect impacts on the native community by creating novel trophic links, and modifying or disrupting existing ones. Here we discuss these impacts by drawing on examples from freshwater ecosystems, and argue that future research should quantify changes in such trophic interactions (i.e. the links in a food web), rather than simply focusing on traditional measures of diversity or abundance (i.e. the nodes in a food web). We conceptualise the impacts of invaders on trophic links as either direct consumption, indirect trophic effects (e.g. cascading interactions, competition) or indirect nontrophic effects (e.g. behaviour mediated). We then discuss how invader impacts on trophic links are context-dependent, varying with invader traits (e.g. feeding rates), abiotic variables (e.g. temperature, pH) and the traits of the receiving community (e.g. predators or competitors). Co-occurring invasive species and other environmental stressors, such as climate change, will also influence invader impacts on trophic links. Finally, we discuss the available methods to identify new food web interactions following invasion and to quantify how invasive species disrupt existing feeding links. Methods include direct observations in the field, laboratory trials (e.g. to quantify functional responses) and controlled mesocosm experiments to elucidate impacts on food webs. Field studies which use tracer techniques, such as stable isotope analyses, allow diet characterisation of both invaders and interacting native species in the wild. We conclude that invasive species often drastically alter food webs by creating and disrupting trophic links, and future research should be directed particularly towards disentangling the effects of invaders from other environmental stressors.",
author = "M.C. Jackson and R.J. Wasserman and J. Grey and Anthony Ricciardi and J.T.A. Dick and Mhairi Alexander",
year = "2017",
doi = "10.1016/bs.aecr.2016.10.006",
language = "English",
isbn = "978-0-12-813328-6",
volume = "57",
series = "Advances in Ecological Research",
publisher = "Elsevier Limited",
pages = "55--97",
editor = "Bohan, {David A.} and Dumbrell, {Alex J.} and Massol, {Fran{\cc}ois }",
booktitle = "Networks of Invasion",
address = "United Kingdom",

}

Jackson, MC, Wasserman, RJ, Grey, J, Ricciardi, A, Dick, JTA & Alexander, M 2017, Novel and disrupted trophic links following invasion in freshwater ecosystems. in DA Bohan, AJ Dumbrell & F Massol (eds), Networks of Invasion: Empirical Evidence and Case Studies. vol. 57, Advances in Ecological Research, vol. 57, Elsevier Limited, pp. 55-97. https://doi.org/10.1016/bs.aecr.2016.10.006

Novel and disrupted trophic links following invasion in freshwater ecosystems. / Jackson, M.C. ; Wasserman, R.J.; Grey, J.; Ricciardi, Anthony; Dick, J.T.A. ; Alexander, Mhairi.

Networks of Invasion: Empirical Evidence and Case Studies. ed. / David A. Bohan; Alex J. Dumbrell; François Massol. Vol. 57 Elsevier Limited, 2017. p. 55-97 (Advances in Ecological Research; Vol. 57).

Research output: Chapter in Book/Report/Conference proceedingChapter

TY - CHAP

T1 - Novel and disrupted trophic links following invasion in freshwater ecosystems

AU - Jackson, M.C.

AU - Wasserman, R.J.

AU - Grey, J.

AU - Ricciardi, Anthony

AU - Dick, J.T.A.

AU - Alexander, Mhairi

PY - 2017

Y1 - 2017

N2 - When invasive species become integrated within a food web, they may have numerous direct and indirect impacts on the native community by creating novel trophic links, and modifying or disrupting existing ones. Here we discuss these impacts by drawing on examples from freshwater ecosystems, and argue that future research should quantify changes in such trophic interactions (i.e. the links in a food web), rather than simply focusing on traditional measures of diversity or abundance (i.e. the nodes in a food web). We conceptualise the impacts of invaders on trophic links as either direct consumption, indirect trophic effects (e.g. cascading interactions, competition) or indirect nontrophic effects (e.g. behaviour mediated). We then discuss how invader impacts on trophic links are context-dependent, varying with invader traits (e.g. feeding rates), abiotic variables (e.g. temperature, pH) and the traits of the receiving community (e.g. predators or competitors). Co-occurring invasive species and other environmental stressors, such as climate change, will also influence invader impacts on trophic links. Finally, we discuss the available methods to identify new food web interactions following invasion and to quantify how invasive species disrupt existing feeding links. Methods include direct observations in the field, laboratory trials (e.g. to quantify functional responses) and controlled mesocosm experiments to elucidate impacts on food webs. Field studies which use tracer techniques, such as stable isotope analyses, allow diet characterisation of both invaders and interacting native species in the wild. We conclude that invasive species often drastically alter food webs by creating and disrupting trophic links, and future research should be directed particularly towards disentangling the effects of invaders from other environmental stressors.

AB - When invasive species become integrated within a food web, they may have numerous direct and indirect impacts on the native community by creating novel trophic links, and modifying or disrupting existing ones. Here we discuss these impacts by drawing on examples from freshwater ecosystems, and argue that future research should quantify changes in such trophic interactions (i.e. the links in a food web), rather than simply focusing on traditional measures of diversity or abundance (i.e. the nodes in a food web). We conceptualise the impacts of invaders on trophic links as either direct consumption, indirect trophic effects (e.g. cascading interactions, competition) or indirect nontrophic effects (e.g. behaviour mediated). We then discuss how invader impacts on trophic links are context-dependent, varying with invader traits (e.g. feeding rates), abiotic variables (e.g. temperature, pH) and the traits of the receiving community (e.g. predators or competitors). Co-occurring invasive species and other environmental stressors, such as climate change, will also influence invader impacts on trophic links. Finally, we discuss the available methods to identify new food web interactions following invasion and to quantify how invasive species disrupt existing feeding links. Methods include direct observations in the field, laboratory trials (e.g. to quantify functional responses) and controlled mesocosm experiments to elucidate impacts on food webs. Field studies which use tracer techniques, such as stable isotope analyses, allow diet characterisation of both invaders and interacting native species in the wild. We conclude that invasive species often drastically alter food webs by creating and disrupting trophic links, and future research should be directed particularly towards disentangling the effects of invaders from other environmental stressors.

U2 - 10.1016/bs.aecr.2016.10.006

DO - 10.1016/bs.aecr.2016.10.006

M3 - Chapter

SN - 978-0-12-813328-6

VL - 57

T3 - Advances in Ecological Research

SP - 55

EP - 97

BT - Networks of Invasion

A2 - Bohan, David A.

A2 - Dumbrell, Alex J.

A2 - Massol, François

PB - Elsevier Limited

ER -

Jackson MC, Wasserman RJ, Grey J, Ricciardi A, Dick JTA, Alexander M. Novel and disrupted trophic links following invasion in freshwater ecosystems. In Bohan DA, Dumbrell AJ, Massol F, editors, Networks of Invasion: Empirical Evidence and Case Studies. Vol. 57. Elsevier Limited. 2017. p. 55-97. (Advances in Ecological Research). https://doi.org/10.1016/bs.aecr.2016.10.006