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Transformation of detritus by a European native and two invasive alien freshwater decapods
Invasive alien species have the potential to alter biodiversity and ecosystem processes. In freshwaters, detritus decomposition is a major ecosystem service but it remains uncertain whether invasive alien decapods process detritus differently to natives. This study examined leaf litter processing, a...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6445490/ https://www.ncbi.nlm.nih.gov/pubmed/31007567 http://dx.doi.org/10.1007/s10530-018-1661-z |
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author | Doherty-Bone, Thomas M. Dunn, Alison M. Liddell, Caroline Brown, Lee E. |
author_facet | Doherty-Bone, Thomas M. Dunn, Alison M. Liddell, Caroline Brown, Lee E. |
author_sort | Doherty-Bone, Thomas M. |
collection | PubMed |
description | Invasive alien species have the potential to alter biodiversity and ecosystem processes. In freshwaters, detritus decomposition is a major ecosystem service but it remains uncertain whether invasive alien decapods process detritus differently to natives. This study examined leaf litter processing, and cascading effects on biofilms, by the European native white clawed crayfish (Austropotamobius pallipes) compared to two invasive alien decapod species: the American signal crayfish (Pacifastacus leniusculus) and the Chinese mitten crab (Eriocheir sinensis). Invasive alien decapods were responsible for higher leaf litter decomposition than the native. In comparison with native crayfish, invasive alien crab and crayfish showed higher rates of litter consumption, increased production of smaller leaf fragments, fine particulate organic matter (FPOM) and dissolved organic carbon. Nutrients (ammonia and soluble reactive phosphorous) derived from excretion (measured separately in the absence of biofilms) varied among decapod species, being lower for P. leniusculus. However, nutrient concentrations did not vary among species in the detritivory experiments with biofilm, implying nutrients were utilised for biofilm production and respiration as no differences in biomass were evident among decapod treatments. These results show invasive alien decapods have the potential to increase the magnitude of detrital processing to FPOM in rivers, but indirect impacts on primary producers due to nutrient release are uncertain based on this experimental context. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s10530-018-1661-z) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-6445490 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-64454902019-04-17 Transformation of detritus by a European native and two invasive alien freshwater decapods Doherty-Bone, Thomas M. Dunn, Alison M. Liddell, Caroline Brown, Lee E. Biol Invasions Original Paper Invasive alien species have the potential to alter biodiversity and ecosystem processes. In freshwaters, detritus decomposition is a major ecosystem service but it remains uncertain whether invasive alien decapods process detritus differently to natives. This study examined leaf litter processing, and cascading effects on biofilms, by the European native white clawed crayfish (Austropotamobius pallipes) compared to two invasive alien decapod species: the American signal crayfish (Pacifastacus leniusculus) and the Chinese mitten crab (Eriocheir sinensis). Invasive alien decapods were responsible for higher leaf litter decomposition than the native. In comparison with native crayfish, invasive alien crab and crayfish showed higher rates of litter consumption, increased production of smaller leaf fragments, fine particulate organic matter (FPOM) and dissolved organic carbon. Nutrients (ammonia and soluble reactive phosphorous) derived from excretion (measured separately in the absence of biofilms) varied among decapod species, being lower for P. leniusculus. However, nutrient concentrations did not vary among species in the detritivory experiments with biofilm, implying nutrients were utilised for biofilm production and respiration as no differences in biomass were evident among decapod treatments. These results show invasive alien decapods have the potential to increase the magnitude of detrital processing to FPOM in rivers, but indirect impacts on primary producers due to nutrient release are uncertain based on this experimental context. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s10530-018-1661-z) contains supplementary material, which is available to authorized users. Springer International Publishing 2018-01-31 2018 /pmc/articles/PMC6445490/ /pubmed/31007567 http://dx.doi.org/10.1007/s10530-018-1661-z Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Original Paper Doherty-Bone, Thomas M. Dunn, Alison M. Liddell, Caroline Brown, Lee E. Transformation of detritus by a European native and two invasive alien freshwater decapods |
title | Transformation of detritus by a European native and two invasive alien freshwater decapods |
title_full | Transformation of detritus by a European native and two invasive alien freshwater decapods |
title_fullStr | Transformation of detritus by a European native and two invasive alien freshwater decapods |
title_full_unstemmed | Transformation of detritus by a European native and two invasive alien freshwater decapods |
title_short | Transformation of detritus by a European native and two invasive alien freshwater decapods |
title_sort | transformation of detritus by a european native and two invasive alien freshwater decapods |
topic | Original Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6445490/ https://www.ncbi.nlm.nih.gov/pubmed/31007567 http://dx.doi.org/10.1007/s10530-018-1661-z |
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