Table 1.
Name and position of sampling sites, light attenuation (Kd) measured near the sites and blade characteristics of the collected kelp, Saccharina longicruris or S. latissima*: specific dry weight (spec. dw) measured from weight vs. area relationships of the central, thick tissue and carbon (C, % of dw), nitrogen (N, % of dw), and phosphorus content (P, % of dw) of blade cross-sections. Data from August 2009 (tissue samples) and August 2010 (Kd). Eqip Sermia and Ilulissat are sites with glaciers. Data are means ± standard error, the number of replicates (n) is 5, except at Eqalunguit (dw: n = 14), Nuuk (dw: n = 10, CN: n = 5; P: n = 3) and Young Sound (n = 15). For some of the sites, some variables are not determined (n.d.)
| Site | Latitude (lat; lon) | Kdm−1 | Spec. dw mg dw cm−2 | C % of dw | N % of dw | P % of dw |
|---|---|---|---|---|---|---|
| 1. Siorapaluk | 77°47′; 70°40′ | 0.18 | n.d. | n.d. | n.d. | n.d. |
| 2. Qaanaaq | 77°28′; 69°15′ | 0.18 | 15.0 ± 2.6 | 36.85 ± 0.78 | 1.24 ± 0.10 | 0.22 ± 0.02 |
| 3. Dundas | 76°33′; 68°52′ | n.d. | 14.9 ± 0.8 | 37.86 ± 0.41 | 0.77 ± 0.09 | 0.16 ± 0.02 |
| 4. Young Sound | 74°19′; 20°14′ | 0.16 | n.d. | 37.96 ± 0.38 | 1.32 ± 0.07* | n.d. |
| 5. Upernavik | 72°47′; 56°10′ | 0.19 | n.d. | n.d. | n.d. | n.d. |
| 6. Uummannaq | 70°40′; 51°36′ | 0.17 | 24.1 ± 4.0* | 37.97 ± 0.73* | 1.18 ± 0.10* | 0.18 ± 0.02* |
| 7. Eqip Sermia | 69°45′; 50°21′ | n.d. | 12.6 ± 2.8* | 33.05 ± 1.24* | 3.16 ± 0.08* | 0.46 ± 0.02* |
| 8. Ilulissat | 69°14′; 51°06′ | 0.19 | n.d. | n.d. | n.d. | n.d. |
| 9. Equalunguit | 67°29′; 53°38′ | n.d. | 18.8 ± 0.9 | n.d. | n.d. | n.d. |
| 10. Itelleq | 66°35′; 53°31′ | n.d. | n.d. | n.d. | n.d. | n.d. |
| 11. Nuuk (1) | 64°08′; 51°37′ | 0.14 | 18.0 ± 1.1 | 35.95 ± 1.12 | 1.10 ± 0.09 | 0.18 ± 0.03 |
| Nuuk (2) | 64°08′; 51°35′ | 16.8 ± 0.9 | 35.31 ± 1.41 | 1.03 ± 0.09 | 0.15 ± 0.01 |