Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach
Organic matter consumption and decomposi- tion were studied in four experimental systems, having collected di erent organic substrates in the Ross Sea in December 1994. For the experimental approach selected, processes normally acting on a mixed pool of substances could be separated and the main fea...
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Language: | English |
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Springer Verlag Germany:Tiergartenstrasse 17, D 69121 Heidelberg Germany:011 49 6221 3450, EMAIL: g.braun@springer.de, INTERNET: http://www.springer.de, Fax: 011 49 6221 345229
1998
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ftunivgenova:oai:iris.unige.it:11567/249187 2024-04-14T08:04:14+00:00 Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach MISIC, CRISTINA POVERO, PAOLO FABIANO, MAURO Misic, Cristina Povero, Paolo Fabiano, Mauro 1998 STAMPA http://hdl.handle.net/11567/249187 eng eng Springer Verlag Germany:Tiergartenstrasse 17, D 69121 Heidelberg Germany:011 49 6221 3450, EMAIL: g.braun@springer.de, INTERNET: http://www.springer.de, Fax: 011 49 6221 345229 volume:20(6) firstpage:367 lastpage:376 journal:POLAR BIOLOGY http://hdl.handle.net/11567/249187 info:eu-repo/semantics/article 1998 ftunivgenova 2024-03-21T02:22:27Z Organic matter consumption and decomposi- tion were studied in four experimental systems, having collected di erent organic substrates in the Ross Sea in December 1994. For the experimental approach selected, processes normally acting on a mixed pool of substances could be separated and the main features of each phe- nomenon could be focused on. Through the strict rela- tionship between each experimental system and natural conditions shown by organic matter assessment, ecto- enzymatic activity trends and their relation with Ant- arctic water substrates could be described. Through ice melting the water column becomes rich in large pools of substrates, as well as enzyme-producing micro-organ- isms, capable of quick development. The quantitative predominance of leucine-aminopeptidase throughout the year is well known, but its relative importance seems to decrease when, owing to production events, the en- vironment is enriched with autotrophic- and heterotro- phic-derived substances, leading to glycolytic enzymes expression. Thus, ectoenzymatic activity is supposed to be one of the factors responsible for organic matter variations, showing quantitative and qualitative changes depending on substrate availability. Article in Journal/Newspaper Antarc* Antarctica Arctic Ross Sea Università degli Studi di Genova: CINECA IRIS Arctic Ross Sea |
institution |
Open Polar |
collection |
Università degli Studi di Genova: CINECA IRIS |
op_collection_id |
ftunivgenova |
language |
English |
description |
Organic matter consumption and decomposi- tion were studied in four experimental systems, having collected di erent organic substrates in the Ross Sea in December 1994. For the experimental approach selected, processes normally acting on a mixed pool of substances could be separated and the main features of each phe- nomenon could be focused on. Through the strict rela- tionship between each experimental system and natural conditions shown by organic matter assessment, ecto- enzymatic activity trends and their relation with Ant- arctic water substrates could be described. Through ice melting the water column becomes rich in large pools of substrates, as well as enzyme-producing micro-organ- isms, capable of quick development. The quantitative predominance of leucine-aminopeptidase throughout the year is well known, but its relative importance seems to decrease when, owing to production events, the en- vironment is enriched with autotrophic- and heterotro- phic-derived substances, leading to glycolytic enzymes expression. Thus, ectoenzymatic activity is supposed to be one of the factors responsible for organic matter variations, showing quantitative and qualitative changes depending on substrate availability. |
author2 |
Misic, Cristina Povero, Paolo Fabiano, Mauro |
format |
Article in Journal/Newspaper |
author |
MISIC, CRISTINA POVERO, PAOLO FABIANO, MAURO |
spellingShingle |
MISIC, CRISTINA POVERO, PAOLO FABIANO, MAURO Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach |
author_facet |
MISIC, CRISTINA POVERO, PAOLO FABIANO, MAURO |
author_sort |
MISIC, CRISTINA |
title |
Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach |
title_short |
Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach |
title_full |
Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach |
title_fullStr |
Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach |
title_full_unstemmed |
Relationship between ecto-enzymatic activity and organic substrates availability (Ross Sea, Antarctica): an experimental approach |
title_sort |
relationship between ecto-enzymatic activity and organic substrates availability (ross sea, antarctica): an experimental approach |
publisher |
Springer Verlag Germany:Tiergartenstrasse 17, D 69121 Heidelberg Germany:011 49 6221 3450, EMAIL: g.braun@springer.de, INTERNET: http://www.springer.de, Fax: 011 49 6221 345229 |
publishDate |
1998 |
url |
http://hdl.handle.net/11567/249187 |
geographic |
Arctic Ross Sea |
geographic_facet |
Arctic Ross Sea |
genre |
Antarc* Antarctica Arctic Ross Sea |
genre_facet |
Antarc* Antarctica Arctic Ross Sea |
op_relation |
volume:20(6) firstpage:367 lastpage:376 journal:POLAR BIOLOGY http://hdl.handle.net/11567/249187 |
_version_ |
1796300659426852864 |