Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.

Aphidophagous coccinellids (ladybeetles) are important providers of herbivore suppression ecosystem services. In the last 30 years, the invasion of exotic coccinellid species, coupled with observed declines in native species, has led to considerable interest in the community dynamics and ecosystem f...

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Autores principales:	Christine A Bahlai, Manuel Colunga-Garcia, Stuart H Gage, Douglas A Landis
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a3a6aaa0457243b69d57d17e27a706f0
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spelling	oai:doaj.org-article:a3a6aaa0457243b69d57d17e27a706f02021-11-18T08:41:58ZLong-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.1932-620310.1371/journal.pone.0083407https://doaj.org/article/a3a6aaa0457243b69d57d17e27a706f02013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24349505/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Aphidophagous coccinellids (ladybeetles) are important providers of herbivore suppression ecosystem services. In the last 30 years, the invasion of exotic coccinellid species, coupled with observed declines in native species, has led to considerable interest in the community dynamics and ecosystem function of this guild. Here we examined a 24-year dataset of coccinellid communities in nine habitats in southwestern Michigan for changes in community function in response to invasion. Specifically we analyzed their temporal population dynamics and species diversity, and we modeled the community's potential to suppress pests. Abundance of coccinellids varied widely between 1989 and 2012 and became increasingly exotic-dominated. More than 71% of 57,813 adult coccinellids captured over the 24-year study were exotic species. Shannon diversity increased slightly over time, but herbivore suppression potential of the community remained roughly constant over the course of the study. However, both Shannon diversity and herbivore suppression potential due to native species declined over time in all habitats. The relationship between Shannon diversity and herbivore suppression potential varied with habitat type: a positive relationship in forest and perennial habitats, but was uncorrelated in annual habitats. This trend may have been because annual habitats were dominated by a few, highly voracious exotic species. Our results indicated that although the composition of the coccinellid community in southwestern Michigan has changed dramatically in the past several decades, its function has remained relatively unchanged in both agricultural and natural habitats. While this is encouraging from the perspective of pest management, it should be noted that losses of one of the dominant exotic coccinellids could result in a rapid decline in pest suppression services if the remaining community is unable to respond.Christine A BahlaiManuel Colunga-GarciaStuart H GageDouglas A LandisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 12, p e83407 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Christine A Bahlai Manuel Colunga-Garcia Stuart H Gage Douglas A Landis Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
description	Aphidophagous coccinellids (ladybeetles) are important providers of herbivore suppression ecosystem services. In the last 30 years, the invasion of exotic coccinellid species, coupled with observed declines in native species, has led to considerable interest in the community dynamics and ecosystem function of this guild. Here we examined a 24-year dataset of coccinellid communities in nine habitats in southwestern Michigan for changes in community function in response to invasion. Specifically we analyzed their temporal population dynamics and species diversity, and we modeled the community's potential to suppress pests. Abundance of coccinellids varied widely between 1989 and 2012 and became increasingly exotic-dominated. More than 71% of 57,813 adult coccinellids captured over the 24-year study were exotic species. Shannon diversity increased slightly over time, but herbivore suppression potential of the community remained roughly constant over the course of the study. However, both Shannon diversity and herbivore suppression potential due to native species declined over time in all habitats. The relationship between Shannon diversity and herbivore suppression potential varied with habitat type: a positive relationship in forest and perennial habitats, but was uncorrelated in annual habitats. This trend may have been because annual habitats were dominated by a few, highly voracious exotic species. Our results indicated that although the composition of the coccinellid community in southwestern Michigan has changed dramatically in the past several decades, its function has remained relatively unchanged in both agricultural and natural habitats. While this is encouraging from the perspective of pest management, it should be noted that losses of one of the dominant exotic coccinellids could result in a rapid decline in pest suppression services if the remaining community is unable to respond.
format	article
author	Christine A Bahlai Manuel Colunga-Garcia Stuart H Gage Douglas A Landis
author_facet	Christine A Bahlai Manuel Colunga-Garcia Stuart H Gage Douglas A Landis
author_sort	Christine A Bahlai
title	Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
title_short	Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
title_full	Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
title_fullStr	Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
title_full_unstemmed	Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
title_sort	long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/a3a6aaa0457243b69d57d17e27a706f0
work_keys_str_mv	AT christineabahlai longtermfunctionaldynamicsofanaphidophagouscoccinellidcommunityremainunchangeddespiterepeatedinvasions AT manuelcolungagarcia longtermfunctionaldynamicsofanaphidophagouscoccinellidcommunityremainunchangeddespiterepeatedinvasions AT stuarthgage longtermfunctionaldynamicsofanaphidophagouscoccinellidcommunityremainunchangeddespiterepeatedinvasions AT douglasalandis longtermfunctionaldynamicsofanaphidophagouscoccinellidcommunityremainunchangeddespiterepeatedinvasions
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Long-term functional dynamics of an aphidophagous coccinellid community remain unchanged despite repeated invasions.

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