Mundy, Christopher John (2011): (Table 1) Abundance of unicellular eukaryotes in ice cores collected during the July 2008 CCGS Amundsen cruise in Darnley Bay [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.817323, Supplement to: Mundy, Christopher John; Gosselin, Michel; Ehn, Jens K; Belzile, Claude; Poulin, Michel; Alou, Eva; Roy, Suzanne; Hop, Haakon; Lessard, Sylvie; Papakyriakou, Tim N; Barber, David G; Stewart, Jeremy (2011): Characteristics of two distinct high-light acclimated algal communities during advanced stages of sea ice melt. Polar Biology, 34(12), 1869-1886, https://doi.org/10.1007/s00300-011-0998-x
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Abstract:
Influence of methanogenic populations in Holocene lacustrine sediments revealed by clone libraries and fatty acid biogeochemistry.Biological characteristics of ice-associated algal communities were studied in Darnley Bay (western Canadian Arctic) during a 2-week period in July 2008 when the landfast ice cover had reached an advanced stage of melt. We found two distinct and separate algal communities: (1) an interior ice community confined to brine channel networks beneath white ice covers; and (2) an ice melt water community in the brackish waters of both surface melt ponds and the layer immediately below the ice cover. Both communities reached maximum chlorophyll a concentrations of about 2.5 mg/m**3, but with diatoms dominating the interior ice while flagellates dominated the melt water community. The microflora of each community was diverse, containing both unique and shared algal species, the latter suggesting an initial seeding of the ice melt water by the bottom ice community. Absorption characteristics of the algae indicated the presence of mycosporine-like amino acids (MAAs) and carotenoid pigments as a photoprotective strategy against being confined to high-light near-surface layers. Although likely not contributing substantially to total annual primary production, these ice-associated communities may play an important ecological role in the Arctic marine ecosystem, supplying an accessible and stable food source to higher trophic levels during the period of ice melt.
Project(s):
Coverage:
Median Latitude: 69.820000 * Median Longitude: -123.641665 * South-bound Latitude: 69.815000 * West-bound Longitude: -123.650000 * North-bound Latitude: 69.825000 * East-bound Longitude: -123.633330
Date/Time Start: 2008-06-08T00:00:00 * Date/Time End: 2008-06-18T00:00:00
Event(s):
Amundsen_Gulf08 * Latitude Start: 69.825000 * Longitude Start: -123.633330 * Latitude End: 69.815000 * Longitude End: -123.650000 * Date/Time Start: 2008-06-08T00:00:00 * Date/Time End: 2008-06-18T00:00:00 * Location: Amundsen Gulf, Canada * Method/Device: Sea ice corer (SEAICEC) * Comment: CCGS Amundsen cruise
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
818 data points
Data
| 1 Location | 2 Date/Time | 3 Sample comment | 4 Diatoms [#/l] (Bacillariophyta total) | 5 Diatoms [#/l] (Coscinodiscophyceae total) | 6 A. cornucervis [#/l] | 7 A. septentrionalis [#/l] | 8 A. cf. septentrionalis [#/l] | 9 C. cf. convolutus [#/l] (forma trisetosa) | 10 C. cf. minimus [#/l] | 11 C. neogracile [#/l] | 12 C. similis [#/l] | 13 C. simplex [#/l] | 14 C. socialis [#/l] (cells) | 15 C. socialis [#/l] (spores) | 16 C. tenuissimus [#/l] | 17 C. vistulae [#/l] | 18 C. wighamii [#/l] | 19 Chaetoceros sp. [#/l] (sp. 1) | 20 Chaetoceros sp. [#/l] (sp. 2) | 21 Chaetoceros spp. [#/l] (<=5 µm) | 22 Chaetoceros spp. [#/l] (6-10 µm) | 23 Chaetoceros spp. [#/l] (>=11 µm) | 24 Chaetoceros spp. [#/l] (hypnospores) | 25 E. groenlandica [#/l] | 26 T. nordenskioeldii [#/l] | 27 Thalassiosira sp. [#/l] (sp. 1) | 28 Thalassiosira spp. [#/l] (10-20 µm) | 29 Thalassiosira spp. [#/l] (21-50 µm) | 30 Diatoms [#/l] (Fragilariophyceae total) | 31 S. hyperborea [#/l] | 32 Diatoms [#/l] (Bacillariophyceae total) | 33 C. closterium [#/l] | 34 E. planamembranacea [#/l] | 35 F. cylindrus [#/l] | 36 F. oceanica [#/l] | 37 Fragilariopsis spp. [#/l] (10-20 µm) | 38 G. concilians [#/l] | 39 N. gelida [#/l] | 40 N. gelida var. radissonii [#/l] | 41 N. pagophila var. manitounukensis [#/l] | 42 N. pelagica [#/l] | 43 N. transitans [#/l] | 44 N. transitans var. derasa [#/l] | 45 Navicula spp. [#/l] (20-50 µm) | 46 N. frigida [#/l] | 47 N. promare [#/l] | 48 Nitzschia spp. [#/l] (20-50 µm) | 49 Nitzschia spp. [#/l] (>50 µm) | 50 P. quadratarea var. minor [#/l] | 51 P. arcticum [#/l] | 52 P-n cf. pseudodelicatissima [#/l] | 53 S. radissonii [#/l] | 54 Diatom pen indet [#/l] (Pennate sp. 1) | 55 Diatom pen indet [#/l] (Pennate sp. 2) | 56 Diatom pen indet [#/l] (Pennate sp. 3) | 57 Diatom pen indet [#/l] (Pennate sp. 4) | 58 Diatom pen indet [#/l] (Pennate sp. 6) | 59 Diatom pen indet [#/l] (<=10 µm) | 60 Diatom pen indet [#/l] (11-20 µm) | 61 Diatom pen indet [#/l] (21-50 µm) | 62 Diatom pen indet [#/l] (>50 µm) | 63 Dinofl [#/l] (Dinophyceae total) | 64 Amphidinium spp. [#/l] | 65 Gymnodinium sp. [#/l] (sp. 5) | 66 G. cf. resplendens [#/l] | 67 Gymnodinium spp. [#/l] (10-20 µm; including Gyrodiniu...) | 68 Gymnodinium spp. [#/l] (21-50 µm; including Gyrodiniu...) | 69 H. arctica [#/l] | 70 H. cf. niei [#/l] | 71 Heterocapsa sp. [#/l] (sp. 2) | 72 P. glacialis [#/l] (cyst) | 73 P. bipes [#/l] | 74 Dinofl indet [#/l] (10-20 µm, Dinophyceae spp.) | 75 Dinofl indet [#/l] (21-50 µm, Dinophyceae spp.) | 76 Dinofl indet [#/l] (>50 µm, Dinophyceae cyst) | 77 Chlorophyceae [#/l] (total) | 78 Polytoma spp. [#/l] | 79 Chlorophyceae indet [#/l] (11-20 µm) | 80 Chrysophyceae [#/l] (total) | 81 D. balticum [#/l] | 82 D. faculiferum [#/l] | 83 Dinobryon spp. [#/l] | 84 Chrysophyceae indet [#/l] (<=5 µm) | 85 Chrysophyceae indet [#/l] (6-10 µm) | 86 Chrysophyceae indet [#/l] (>10 µm) | 87 Chrysophyceae cysts [#/l] | 88 Dictyochophyceae [#/l] (total) | 89 Pseudopedinella spp. [#/l] (<=5 µm) | 90 Pseudopedinella spp. [#/l] (6-10 µm) | 91 Cryptophyceae [#/l] (total) | 92 P. prolonga var. nordica [#/l] | 93 Cryptophyceae indet [#/l] (<=5 µm) | 94 Cryptophyceae indet [#/l] (6-10 µm) | 95 Cryptophyceae indet [#/l] (>10 µm) | 96 Euglenophyceae [#/l] (total) | 97 Euglenophyceae indet [#/l] (10-20 µm) | 98 Euglenophyceae indet [#/l] (>20 µm) | 99 Prasinophyceae [#/l] (total) | 100 D. nummulifera [#/l] | 101 P. disomata [#/l] | 102 Pyramimonas sp. [#/l] (sp. 1) | 103 Pyramimonas sp. [#/l] (sp. 2) | 104 Pyramimonas spp. [#/l] (<=5 µm) | 105 Pyramimonas spp. [#/l] (6-10 µm) | 106 Pyramimonas spp. [#/l] (>10 µm) | 107 Prasinophyceae indet [#/l] (6-10 µm) | 108 Prymnesio [#/l] | 109 Chrysochromulina spp. [#/l] (<=5 µm) | 110 Chrysochromulina spp. [#/l] (6-10 µm) | 111 Chrysochromulina spp. [#/l] (>10 µm) | 112 Dicrateria spp. [#/l] (including Imantonia spp.) | 113 Prymnesiophyceae indet [#/l] (sp. 1) | 114 Prymnesiophyceae indet [#/l] (<=5 µm) | 115 Prymnesiophyceae indet [#/l] (6-10 µm) | 116 Prymnesiophyceae indet [#/l] (>10 µm) | 117 Flag indet [#/l] (total) | 118 Flag indet [#/l] (sp. 2) | 119 Flag indet [#/l] (sp. 3) | 120 Flag indet [#/l] (<=5 µm) | 121 Flag indet [#/l] (6-10 µm) | 122 Flag indet [#/l] (11-20 µm) | 123 Flag indet [#/l] (>20 µm) | 124 Raphidophyceae [#/l] (total) | 125 Chattonella spp. [#/l] | 126 Raphidophyceae indet [#/l] (>=10 µm) | 127 HFL [#/l] (total) | 128 B. cf. curvifilus [#/l] | 129 Bodo spp. [#/l] | 130 L. marina [#/l] | 131 Notosolenus sp. [#/l] (sensu Berard-Therriault et al...) | 132 Q. rotundata [#/l] | 133 R. nasuta [#/l] | 134 T. subtile [#/l] | 135 Telonema sp. [#/l] (sp. 1) | 136 V. cf. simplex [#/l] | 137 Flag indet [#/l] (sp. A) | 138 HFL [#/l] (6-10 µm) | 139 HFL [#/l] (>10 µm) | 140 Choanoflagellida [#/l] (total) | 141 Bicosta spp. [#/l] | 142 C. longicaudata [#/l] | 143 C. natans [#/l] | 144 Monosiga sp. [#/l] (sensu Berard-Therriault et al...) | 145 P. socialis [#/l] | 146 Choanoflag indet [#/l] (<=5 µm) | 147 Choanoflag indet [#/l] (6-10 µm) | 148 Choanoflag indet [#/l] (>10 µm) | 149 Ciliates [#/l] (total) | 150 L. oviformis [#/l] | 151 Strombidium spp. [#/l] (21-50 µm) | 152 Ciliates indet [#/l] (sp. 3) | 153 Ciliates indet [#/l] (11-20 µm) | 154 Ciliates indet [#/l] (21-50 µm) | 155 Ciliates indet [#/l] (>50 µm) | 156 Ind.unkn [#/l] (all unidentified auto- and he...) | 157 Ind.unkn [#/l] (cyst sp. 1 (17 µm)) | 158 Ind.unkn [#/l] (cysts 10-20 µm) | 159 Ind.unkn [#/l] (cysts 21-50 µm) | 160 Ind.unkn [#/l] (cell sp. 1 (3-5 µm)) | 161 Ind.unkn [#/l] (cells <=5 µm) | 162 Ind.unkn [#/l] (cells 6-10 µm) | 163 Ind.unkn [#/l] (cells 11-20 µm) | 164 Spec No [#] | 165 Taxa [#] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Interior ice | 2008-06-18 | ice surface | 2018000 | 741000 | 0 | 0 | 5000 | 0 | 0 | 134000 | 0 | 10000 | 0 | 5000 | 0 | 134000 | 5000 | 114000 | 45000 | 159000 | 60000 | 5000 | 15000 | 0 | 0 | 0 | 5000 | 45000 | 0 | 0 | 1277000 | 423000 | 10000 | 10000 | 0 | 0 | 0 | 0 | 0 | 0 | 85000 | 10000 | 0 | 10000 | 338000 | 0 | 10000 | 0 | 0 | 0 | 0 | 0 | 40000 | 134000 | 0 | 0 | 0 | 40000 | 129000 | 40000 | 0 | 30000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10000 | 0 | 0 | 0 | 20000 | 10000 | 10000 | 0 | 25000 | 0 | 0 | 0 | 0 | 5000 | 5000 | 15000 | 0 | 0 | 0 | 5000 | 0 | 5000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 40000 | 15000 | 20000 | 0 | 0 | 0 | 5000 | 0 | 0 | 169000 | 0 | 0 | 119000 | 30000 | 15000 | 5000 | 0 | 0 | 0 | 15000 | 0 | 0 | 0 | 0 | 0 | 5000 | 10000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 15000 | 0 | 5000 | 0 | 5000 | 5000 | 0 | 258000 | 0 | 5000 | 5000 | 0 | 189000 | 40000 | 15000 | 20 | 52 |
| Bottom ice | 2008-06-09 | bottommost 3 cm of core | 1096000 | 245000 | 0 | 16000 | 0 | 0 | 0 | 0 | 31000 | 5000 | 0 | 0 | 0 | 0 | 0 | 131000 | 0 | 16000 | 47000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10000 | 10000 | 841000 | 63000 | 0 | 0 | 0 | 0 | 31000 | 0 | 0 | 26000 | 0 | 10000 | 16000 | 26000 | 402000 | 63000 | 0 | 37000 | 16000 | 5000 | 0 | 0 | 21000 | 0 | 0 | 0 | 0 | 21000 | 42000 | 63000 | 0 | 16000 | 0 | 0 | 0 | 5000 | 5000 | 0 | 0 | 5000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 37000 | 0 | 0 | 26000 | 10000 | 0 | 0 | 0 | 10000 | 10000 | 0 | 10000 | 0 | 10000 | 0 | 0 | 0 | 0 | 0 | 52000 | 0 | 0 | 0 | 0 | 0 | 16000 | 16000 | 21000 | 141000 | 84000 | 37000 | 0 | 0 | 0 | 21000 | 0 | 0 | 1671000 | 0 | 0 | 1504000 | 136000 | 31000 | 0 | 5000 | 0 | 5000 | 204000 | 94000 | 78000 | 0 | 0 | 5000 | 0 | 0 | 0 | 10000 | 16000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5000 | 0 | 0 | 0 | 5000 | 0 | 0 | 2339000 | 0 | 26000 | 0 | 1535000 | 679000 | 84000 | 10000 | 21 | 51 |
| Bottom ice | 2008-06-18 | bottommost 3 cm of core | 1070000 | 62000 | 0 | 4000 | 0 | 4000 | 4000 | 16000 | 0 | 0 | 0 | 4000 | 4000 | 0 | 0 | 16000 | 0 | 12000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 27000 | 27000 | 981000 | 27000 | 16000 | 4000 | 0 | 0 | 0 | 8000 | 4000 | 0 | 333000 | 0 | 0 | 8000 | 120000 | 0 | 43000 | 8000 | 0 | 0 | 0 | 16000 | 0 | 23000 | 256000 | 8000 | 4000 | 0 | 70000 | 31000 | 4000 | 39000 | 0 | 0 | 0 | 0 | 0 | 4000 | 4000 | 0 | 27000 | 0 | 0 | 4000 | 0 | 0 | 0 | 0 | 74000 | 31000 | 8000 | 8000 | 16000 | 0 | 0 | 12000 | 0 | 0 | 0 | 16000 | 0 | 0 | 16000 | 0 | 0 | 0 | 0 | 62000 | 0 | 0 | 4000 | 0 | 4000 | 35000 | 19000 | 0 | 47000 | 8000 | 16000 | 0 | 0 | 0 | 8000 | 16000 | 0 | 949000 | 23000 | 0 | 748000 | 101000 | 70000 | 8000 | 0 | 0 | 0 | 43000 | 0 | 4000 | 0 | 0 | 0 | 0 | 8000 | 4000 | 12000 | 0 | 8000 | 8000 | 4000 | 0 | 0 | 0 | 4000 | 0 | 0 | 0 | 0 | 8000 | 0 | 0 | 0 | 4000 | 4000 | 0 | 903000 | 4000 | 70000 | 0 | 0 | 601000 | 147000 | 78000 | 32 | 65 |
| Dome | 2008-06-08 | 178000 | 45000 | 0 | 0 | 0 | 0 | 1000 | 0 | 0 | 0 | 12000 | 4000 | 0 | 0 | 0 | 0 | 1000 | 2000 | 3000 | 0 | 0 | 4000 | 2000 | 14000 | 1000 | 0 | 0 | 0 | 133000 | 18000 | 0 | 0 | 65000 | 44000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1000 | 1000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2000 | 1000 | 0 | 15000 | 0 | 2000 | 4000 | 2000 | 6000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5000 | 0 | 2000 | 0 | 0 | 3000 | 0 | 0 | 5000 | 0 | 5000 | 13000 | 0 | 4000 | 5000 | 3000 | 3000 | 1000 | 2000 | 1000 | 0 | 0 | 0 | 0 | 1000 | 0 | 0 | 0 | 64000 | 16000 | 42000 | 3000 | 2000 | 0 | 1000 | 0 | 0 | 203000 | 0 | 1000 | 98000 | 73000 | 16000 | 15000 | 0 | 0 | 0 | 26000 | 0 | 1000 | 0 | 1000 | 0 | 1000 | 0 | 11000 | 0 | 0 | 0 | 12000 | 3000 | 0 | 0 | 0 | 0 | 0 | 0 | 1000 | 2000 | 25000 | 5000 | 3000 | 5000 | 1000 | 10000 | 0 | 54000 | 0 | 1000 | 0 | 0 | 26000 | 27000 | 0 | 18 | 54 | |
| Dome | 2008-06-18 | 131000 | 105000 | 2000 | 0 | 0 | 0 | 9000 | 9000 | 0 | 0 | 13000 | 2000 | 0 | 2000 | 0 | 0 | 46000 | 7000 | 14000 | 0 | 0 | 0 | 0 | 0 | 0 | 2000 | 0 | 0 | 25000 | 13000 | 0 | 0 | 2000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5000 | 4000 | 0 | 29000 | 2000 | 0 | 0 | 18000 | 0 | 0 | 0 | 0 | 0 | 2000 | 2000 | 5000 | 0 | 4000 | 0 | 4000 | 449000 | 216000 | 9000 | 209000 | 4000 | 9000 | 2000 | 0 | 9000 | 5000 | 4000 | 32000 | 2000 | 0 | 0 | 30000 | 0 | 0 | 0 | 229000 | 2000 | 104000 | 54000 | 25000 | 4000 | 30000 | 11000 | 0 | 50000 | 16000 | 11000 | 4000 | 0 | 2000 | 5000 | 9000 | 4000 | 1212000 | 769000 | 0 | 286000 | 57000 | 100000 | 0 | 2000 | 2000 | 0 | 39000 | 0 | 0 | 2000 | 0 | 0 | 0 | 5000 | 16000 | 0 | 14000 | 2000 | 0 | 46000 | 2000 | 2000 | 2000 | 21000 | 4000 | 2000 | 9000 | 5000 | 7000 | 0 | 0 | 0 | 2000 | 4000 | 2000 | 102000 | 0 | 4000 | 0 | 0 | 48000 | 30000 | 18000 | 27 | 70 |