Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites
Abstract Nutrient availability is a major constraint on plant production and carbon storage in arctic ecosystems but knowledge on the decomposer food web interactions and their effect on nutrient cycling is scarce. We manipulated the soil food web at two contrasting subarctic sites, a low altitude h...
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crbrillap:10.1163/156854102760290509 2024-09-30T14:30:36+00:00 Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites Jonasson, Sven Schmidt, Inger Michelsen, Anders Ruess, Liliane 2002 http://dx.doi.org/10.1163/156854102760290509 https://brill.com/view/journals/nemy/4/4/article-p527_7.xml https://data.brill.com/files/journals/15685411_004_04_s007_text.pdf unknown Brill Nematology volume 4, issue 4, page 527-539 ISSN 1388-5545 1568-5411 journal-article 2002 crbrillap https://doi.org/10.1163/156854102760290509 2024-09-09T04:17:50Z Abstract Nutrient availability is a major constraint on plant production and carbon storage in arctic ecosystems but knowledge on the decomposer food web interactions and their effect on nutrient cycling is scarce. We manipulated the soil food web at two contrasting subarctic sites, a low altitude heath and a high altitude fell-field. The influx of nutrients and energy in the soil was increased by addition of fertiliser nitrogen, phosphorus and potassium and of labile carbon (sugar). In addition, two bactericides (penicillin and streptomycin) and a fungicide (benomyl) were applied to manipulate the bacterial and fungal component of the soil. Experiments were carried out in a factorial design with repeated additions over four growing seasons. The present study investigated the nematode fauna and the effects of the manipulations on the abundance of nematode species. Fertilisation resulted in an increase of general opportunists, especially Aphelenchoides. Application of carbon or bactericides had only minor impact on the nematode community. In contrast, the fungicide was very toxic to non-target organisms and greatly reduced the abundance of most nematode species, although Acrobeloides buetschlii showed tolerance and greatly increased in number. At both sites, Eudorylaimus was most affected by the treatments. Generally the manipulations performed resulted in a significant increase in stress tolerant or competitive dominant nematode species. Article in Journal/Newspaper Arctic Subarctic Brill Arctic Nematology 4 4 527 539 |
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Abstract Nutrient availability is a major constraint on plant production and carbon storage in arctic ecosystems but knowledge on the decomposer food web interactions and their effect on nutrient cycling is scarce. We manipulated the soil food web at two contrasting subarctic sites, a low altitude heath and a high altitude fell-field. The influx of nutrients and energy in the soil was increased by addition of fertiliser nitrogen, phosphorus and potassium and of labile carbon (sugar). In addition, two bactericides (penicillin and streptomycin) and a fungicide (benomyl) were applied to manipulate the bacterial and fungal component of the soil. Experiments were carried out in a factorial design with repeated additions over four growing seasons. The present study investigated the nematode fauna and the effects of the manipulations on the abundance of nematode species. Fertilisation resulted in an increase of general opportunists, especially Aphelenchoides. Application of carbon or bactericides had only minor impact on the nematode community. In contrast, the fungicide was very toxic to non-target organisms and greatly reduced the abundance of most nematode species, although Acrobeloides buetschlii showed tolerance and greatly increased in number. At both sites, Eudorylaimus was most affected by the treatments. Generally the manipulations performed resulted in a significant increase in stress tolerant or competitive dominant nematode species. |
format |
Article in Journal/Newspaper |
author |
Jonasson, Sven Schmidt, Inger Michelsen, Anders Ruess, Liliane |
spellingShingle |
Jonasson, Sven Schmidt, Inger Michelsen, Anders Ruess, Liliane Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
author_facet |
Jonasson, Sven Schmidt, Inger Michelsen, Anders Ruess, Liliane |
author_sort |
Jonasson, Sven |
title |
Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
title_short |
Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
title_full |
Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
title_fullStr |
Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
title_full_unstemmed |
Responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
title_sort |
responses of nematode species composition to factorial addition of carbon, fertiliser, bactericide and fungicide at two sub-arctic sites |
publisher |
Brill |
publishDate |
2002 |
url |
http://dx.doi.org/10.1163/156854102760290509 https://brill.com/view/journals/nemy/4/4/article-p527_7.xml https://data.brill.com/files/journals/15685411_004_04_s007_text.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic |
genre_facet |
Arctic Subarctic |
op_source |
Nematology volume 4, issue 4, page 527-539 ISSN 1388-5545 1568-5411 |
op_doi |
https://doi.org/10.1163/156854102760290509 |
container_title |
Nematology |
container_volume |
4 |
container_issue |
4 |
container_start_page |
527 |
op_container_end_page |
539 |
_version_ |
1811635478148939776 |