Cargando…

The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?

The ecological success of a plant species is typically described by the observed change in plant abundance or cover, but in order to more fully understand the fundamental plant ecological processes, it is necessary to inspect the underlying processes of survival and colonization and how they are aff...

Descripción completa

Detalles Bibliográficos
Autores principales: Damgaard, Christian, Strandberg, Beate, Mathiassen, Solvejg K., Kudsk, Per
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3623907/
https://www.ncbi.nlm.nih.gov/pubmed/23593371
http://dx.doi.org/10.1371/journal.pone.0060992
_version_ 1782265993218752512
author Damgaard, Christian
Strandberg, Beate
Mathiassen, Solvejg K.
Kudsk, Per
author_facet Damgaard, Christian
Strandberg, Beate
Mathiassen, Solvejg K.
Kudsk, Per
author_sort Damgaard, Christian
collection PubMed
description The ecological success of a plant species is typically described by the observed change in plant abundance or cover, but in order to more fully understand the fundamental plant ecological processes, it is necessary to inspect the underlying processes of survival and colonization and how they are affected by environmental conditions. A general ecological hypothesis on the effect of environmental gradients on demographic parameters is proposed and tested. The hypothesis is that decreasing fitness or competitive ability along an environmental gradient is associated with an increasing importance of survival for regulating the abundance of the species. The tested hypothesis is related to both the stress gradient hypothesis and whether the importance of competition increases along productivity gradients. The combined effect of nitrogen and glyphosate on the survival and colonization probability of two perennial grass species, Festuca ovina and Agrostis capillaris, which are known to differ in their responses to both glyphosate and nitrogen treatments, is calculated using pin-point cover data in permanent frames. We found that the relative importance of survival increased with the level of glyphosate for the glyphosate sensitive A. capillaris and decreased for the glyphosate tolerant F. ovina. Likewise, increasing levels of nitrogen increased the importance of survival for the relative nitrophobic F. ovina. Consequently, the proposed hypothesis was corroborated in this specific study. The proposed method will enable predictions of the effects of agricultural practices on community dynamics in a relatively simple setup eliminating the need to quantify all the interaction among the species in the plant community. The method will be immediately useful for the regulation of non-cultivated buffer strips between agricultural fields and semi-natural and natural biotopes such as hedgerows and waterways.
format Online
Article
Text
id pubmed-3623907
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-36239072013-04-16 The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability? Damgaard, Christian Strandberg, Beate Mathiassen, Solvejg K. Kudsk, Per PLoS One Research Article The ecological success of a plant species is typically described by the observed change in plant abundance or cover, but in order to more fully understand the fundamental plant ecological processes, it is necessary to inspect the underlying processes of survival and colonization and how they are affected by environmental conditions. A general ecological hypothesis on the effect of environmental gradients on demographic parameters is proposed and tested. The hypothesis is that decreasing fitness or competitive ability along an environmental gradient is associated with an increasing importance of survival for regulating the abundance of the species. The tested hypothesis is related to both the stress gradient hypothesis and whether the importance of competition increases along productivity gradients. The combined effect of nitrogen and glyphosate on the survival and colonization probability of two perennial grass species, Festuca ovina and Agrostis capillaris, which are known to differ in their responses to both glyphosate and nitrogen treatments, is calculated using pin-point cover data in permanent frames. We found that the relative importance of survival increased with the level of glyphosate for the glyphosate sensitive A. capillaris and decreased for the glyphosate tolerant F. ovina. Likewise, increasing levels of nitrogen increased the importance of survival for the relative nitrophobic F. ovina. Consequently, the proposed hypothesis was corroborated in this specific study. The proposed method will enable predictions of the effects of agricultural practices on community dynamics in a relatively simple setup eliminating the need to quantify all the interaction among the species in the plant community. The method will be immediately useful for the regulation of non-cultivated buffer strips between agricultural fields and semi-natural and natural biotopes such as hedgerows and waterways. Public Library of Science 2013-04-11 /pmc/articles/PMC3623907/ /pubmed/23593371 http://dx.doi.org/10.1371/journal.pone.0060992 Text en © 2013 Damgaard et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Damgaard, Christian
Strandberg, Beate
Mathiassen, Solvejg K.
Kudsk, Per
The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?
title The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?
title_full The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?
title_fullStr The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?
title_full_unstemmed The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?
title_short The Effect of Nitrogen and Glyphosate on Survival and Colonisation of Perennial Grass Species in an Agro-Ecosystem: Does the Relative Importance of Survival Decrease with Competitive Ability?
title_sort effect of nitrogen and glyphosate on survival and colonisation of perennial grass species in an agro-ecosystem: does the relative importance of survival decrease with competitive ability?
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3623907/
https://www.ncbi.nlm.nih.gov/pubmed/23593371
http://dx.doi.org/10.1371/journal.pone.0060992
work_keys_str_mv AT damgaardchristian theeffectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT strandbergbeate theeffectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT mathiassensolvejgk theeffectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT kudskper theeffectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT damgaardchristian effectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT strandbergbeate effectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT mathiassensolvejgk effectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability
AT kudskper effectofnitrogenandglyphosateonsurvivalandcolonisationofperennialgrassspeciesinanagroecosystemdoestherelativeimportanceofsurvivaldecreasewithcompetitiveability