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Author |
Chapelle, G; Peck, LS |
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Title |
Polar gigantism dictated by oxygen availability |
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Journal Article |
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Year |
1999 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
399 |
Issue |
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Pages |
114-115 |
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English |
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ISSN |
0028-0836 |
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Black Sea; Caspian Sea; Lake Baikal |
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Call Number |
refbase @ user @ 137 |
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1 |
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Author |
Hobson, KA; Ambrose Jr, WG; Renaud, PE |
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Title |
Sources of primary production, benthic-pelagic coupling, and trophic relationships within the Northeast Water Polynya: Insights from δ13C and δ15N analysis |
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Journal Article |
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Year |
1995 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar Ecol Prog Ser |
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Volume |
128 |
Issue |
1-3 |
Pages |
1-10 |
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Keywords |
phytobenthos; polynyas; carbon 13; nitrogen isotopes; food webs; check lists; trophic structure; Algae; PNE, Greenland, Northeast Water Polynya |
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Abstract |
We used stable carbon (13C/12C) and nitrogen (15N/14N) isotope analysis to investigate linkages between sources of primary production and the pelagic and benthic components of the Northeast Water (NEW) Polynya off northeastern Greenland. Ice algae was enriched in 13C (mean δ13C = -18.6 vs -27.9 ppt) and 15N (mean δ15N = 8.3 vs 4.9 ppt) over particulate organic matter (POM) suggesting that the relative importance of these sources might be traced isotopically. Most grazing crustaceans and filter-feeding bivalves had δ13C and δ15N values in the range of -21 to -23 ppt and 7 to 9 ppt, respectively, indicating a direct pathway from POM. Close benthic-pelagic coupling was also confirmed for other benthic organisms examined with the exception of the predatory or deposit feeding echinoderms Ophiocten, Ophiacantha and Pontaster. Compared with other Arctic and temperate marine food webs, stable-carbon isotope values for the NEW Polynya were depleted in 13C. A δ15N trophic model that incorporated taxon-specific isotopic fractionation factors indicated that the NEW Polynya consisted of 4.5 to 5 trophic levels. Stable-isotope analysis may be well suited to establishing the importance of polynyas as sites of high primary productivity and tight benthic-pelagic coupling relative to regions of more permanent ice cover. |
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Canadian Wildlife Service, 115 Perimeter Road, Saskatoon, SK S7N 0X4, Canada |
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Publisher |
Inter-Research |
Place of Publication |
Oldendorf/Luhe |
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English |
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English |
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ISSN |
0171-8630 |
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Northeast Water Polynya; Northeast Greenland Shelf; Arctic |
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Notes |
Bibliogr.: 63 ref. |
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no |
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Call Number |
refbase @ user @ 133 |
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3 |
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Author |
Hobson, KA; Ambrose Jr, WG; Renaud, PE |
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Title |
Sources of primary production, benthic-pelagic coupling, and trophic relationships within the Northeast Water Polynya: insights from δ13C and δ15N analysis |
Type |
Journal Article |
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Year |
1995 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar Ecol Prog Ser |
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Volume |
128 |
Issue |
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Pages |
1-10 |
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Keywords |
ARK; Greenland; NEW; Polynya; Isotopes; 13C; 15N; Benthos; Food |
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Inter-Research |
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Oldendorf/Luhe |
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English |
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English |
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0171-8630 |
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no |
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Call Number |
refbase @ user @ NEW Zonation(96) |
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10 |
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Author |
Schleser, GH; Jayasekera, R |
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Title |
δ13C-variations of leaves in forests as an indication of reassimilated CO2 from the soil |
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Journal Article |
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Year |
1985 |
Publication |
Oecologia |
Abbreviated Journal |
Oecologia |
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Volume |
65 |
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Pages |
536-542 |
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Keywords |
soil respiration; photosynthesis; vascular plant |
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no |
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Call Number |
refbase @ user @ ms |
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11 |
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Author |
Lohrmann, A; Cabrera, R; Kraus, NC |
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Title |
Acoustic-doppler velocimeter (ADV) for laboratory use |
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Journal Article |
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Year |
1994 |
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Fundamentals and advancements in hydraulic measurements and experimentation. Proceedings, Hydraulic Division/ASCE, August 1994 |
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Pages |
351-365 |
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Keywords |
methods; flow; flume |
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Symposium on fundamentals and advancements in hydraulic measurements and experimentation |
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no |
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Call Number |
refbase @ user @ |
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8 |
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