Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM)
Macroalgae, in particular kelps, produce a large amount of biomass in Kongsfjorden, which is to a great extent released into the water in an annual cycle. As an example, the brown alga Alaria esculenta loses its blade gradually, 3±0.8% of the blade area per day (August 2012), thereby adding to the p...
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ftawi:oai:epic.awi.de:39125 2024-09-15T18:17:03+00:00 Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) Buchholz, Cornelia Wiencke, Christian 2016 https://epic.awi.de/id/eprint/39125/ https://hdl.handle.net/10013/epic.46357 unknown SPRINGER Buchholz, C. orcid:0000-0002-5055-1586 and Wiencke, C. (2016) Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) , Polar Biology, 39 , pp. 2053-2064 . doi:10.1007/s00300-015-1828-3 <https://doi.org/10.1007/s00300-015-1828-3> , hdl:10013/epic.46357 EPIC3Polar Biology, SPRINGER, 39, pp. 2053-2064, ISSN: 0722-4060 <span id="skype_c2c_container" c Article isiRev 2016 ftawi https://doi.org/10.1007/s00300-015-1828-3 2024-06-24T04:13:16Z Macroalgae, in particular kelps, produce a large amount of biomass in Kongsfjorden, which is to a great extent released into the water in an annual cycle. As an example, the brown alga Alaria esculenta loses its blade gradually, 3±0.8% of the blade area per day (August 2012), thereby adding to the pool of particulate organic matter (POM) in the fjord. Upon release small thallus pieces are “aging” in that they are prone to leaching and serving as substrate for microorganisms, thus turning into palatable food for suspension and bottom feeders. In order to define a macroalgal baseline for the Kongsfjorden food web, stable isotopes δ14C and δ15N were measured in individuals of Alaria esculenta, Saccharina latissima and Laminaria digitata directly sampled after collection and in artificially produced POM (aPOM) of A. esculenta that was allowed to age under experimental conditions. In aPOM from this species sampled in August 2012 the C/N ratios decreased between d1 and d8 of a 14 day culture period in parallel to the fading photosynthetic activity of the algal fragments as demonstrated by use of an Imaging-PAM. Microscopic observations of the aPOM in August 2012 and 2013 revealed the frequent occurrence of small brown algal endo- and epiphytes. First feeding experiments with Mysis oculata (Mysids) and Hiatella arctica (Bivalves) showed that these species can ingest macroalgal POM. The importance of kelp-derived POM for the food web is subject of the current research. Article in Journal/Newspaper Kongsfjord* Kongsfjorden Polar Biology Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Polar Biology 39 11 2053 2064 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Macroalgae, in particular kelps, produce a large amount of biomass in Kongsfjorden, which is to a great extent released into the water in an annual cycle. As an example, the brown alga Alaria esculenta loses its blade gradually, 3±0.8% of the blade area per day (August 2012), thereby adding to the pool of particulate organic matter (POM) in the fjord. Upon release small thallus pieces are “aging” in that they are prone to leaching and serving as substrate for microorganisms, thus turning into palatable food for suspension and bottom feeders. In order to define a macroalgal baseline for the Kongsfjorden food web, stable isotopes δ14C and δ15N were measured in individuals of Alaria esculenta, Saccharina latissima and Laminaria digitata directly sampled after collection and in artificially produced POM (aPOM) of A. esculenta that was allowed to age under experimental conditions. In aPOM from this species sampled in August 2012 the C/N ratios decreased between d1 and d8 of a 14 day culture period in parallel to the fading photosynthetic activity of the algal fragments as demonstrated by use of an Imaging-PAM. Microscopic observations of the aPOM in August 2012 and 2013 revealed the frequent occurrence of small brown algal endo- and epiphytes. First feeding experiments with Mysis oculata (Mysids) and Hiatella arctica (Bivalves) showed that these species can ingest macroalgal POM. The importance of kelp-derived POM for the food web is subject of the current research. |
format |
Article in Journal/Newspaper |
author |
Buchholz, Cornelia Wiencke, Christian |
spellingShingle |
Buchholz, Cornelia Wiencke, Christian Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) |
author_facet |
Buchholz, Cornelia Wiencke, Christian |
author_sort |
Buchholz, Cornelia |
title |
Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) |
title_short |
Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) |
title_full |
Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) |
title_fullStr |
Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) |
title_full_unstemmed |
Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) |
title_sort |
working on a baseline for the kongsfjorden food web: production and properties of macroalgal particulate organic matter (pom) |
publisher |
SPRINGER |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/39125/ https://hdl.handle.net/10013/epic.46357 |
genre |
Kongsfjord* Kongsfjorden Polar Biology |
genre_facet |
Kongsfjord* Kongsfjorden Polar Biology |
op_source |
EPIC3Polar Biology, SPRINGER, 39, pp. 2053-2064, ISSN: 0722-4060 <span id="skype_c2c_container" c |
op_relation |
Buchholz, C. orcid:0000-0002-5055-1586 and Wiencke, C. (2016) Working on a baseline for the Kongsfjorden food web: Production and properties of macroalgal particulate organic matter (POM) , Polar Biology, 39 , pp. 2053-2064 . doi:10.1007/s00300-015-1828-3 <https://doi.org/10.1007/s00300-015-1828-3> , hdl:10013/epic.46357 |
op_doi |
https://doi.org/10.1007/s00300-015-1828-3 |
container_title |
Polar Biology |
container_volume |
39 |
container_issue |
11 |
container_start_page |
2053 |
op_container_end_page |
2064 |
_version_ |
1810455043562799104 |