Citation:

08-054.1

Name: (Table 1) Age, fork length, and tissue d15N and element concentration of arctic char (Salvelinus alpinus) from Lake Hazen
Published: 2009
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Arctic char (Salvelinus alpinus L.), the top predator in High Arctic lakes, often is used as a bioindicator of Hg contamination in Arctic aquatic ecosystems. The present study investigated effects of trophic position, size, and age of Arctic char in Lake Hazen, the largest lake in the Canadian High Arctic (81°50'N, 70°25'W), on Hg bioaccumulation. In addition, several essential (Se, K) and nonessential elements (Tl, Cs) in char muscle tissue were examined to compare their behavior to that of Hg. Trophic position of Arctic char was identified by stable isotope (d15N) signature. Temporal trends of Hg from seven sampling campaigns over a 16-year period (1990-2006) were investigated for the overall data and for one trophic class. Concentrations of Hg were not correlated with age but were positively related to fork length and trophic position. Large char with greater d15N signatures (>12 per mil) had larger Hg concentrations (0.09-1.63 µg/g wet wt) than small char with smaller d15N signatures (<12 per mil, 0.03-0.32 µg/g wet wt), indicating that Hg concentrations increased with trophic position. Nonessential Cs and Tl showed relationships to age, length, and trophic position similar to those of Hg, indicating their potential to bioaccumulate and biomagnify. Essential Se and K did not show these relationships. Concentrations of Hg were adjusted using d15N, leading to less within-year variability and a more consistent temporal trend. The d15N-adjusted trend showed no decline of Hg in Arctic char from Lake Hazen (1990-2006) in the overall data set and in the small morphotype. Trends for the same period before the adjustment were not significant for the overall data set, but a slight decrease was apparent in the small morphotype. The results confirm the need to consider trophic position and fish size when monitoring temporal trends of Hg, particularly for species with different morphotypes.

Project(s):

International Polar Year (2007-2008) (IPY)

Coverage:

Latitude: 81.800000 * Longitude: -71.000000

Date/Time Start: 1990-06-15T00:00:00 * Date/Time End: 2006-06-15T00:00:00

Minimum Elevation: 158.0 m * Maximum Elevation: 158.0 m

Event(s):

Lake_Hazen * Latitude: 81.800000 * Longitude: -71.000000 * Elevation: 158.0 m * Lake water depth: 280 m * Location: Ellesmere Island, Canadian Arctic Archipelago * Method/Device: Biological sample (BIOS)

Comment:

The 1990 stable isotope data is estimated based on 1992 relationship of length and d15N (y = 19.661x - 40.16). Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Morphotype	Morphotype		Gantner, Nikolaus
2	DATE/TIME	Date/Time				Geocode
3	Salvelinus alpinus	S. alpinus	#	Gantner, Nikolaus		used for aging; #45 = 45(43), #20 = 20(19), #25 = 25(24), #4 = 4(3)
4	Salvelinus alpinus, age	S. alpinus age	a	Gantner, Nikolaus	Otholith analysis	average
5	Salvelinus alpinus, standard deviation	S. alpinus std dev	±	Gantner, Nikolaus	Otholith analysis	age
6	Salvelinus alpinus, age	S. alpinus age	a	Gantner, Nikolaus	Otholith analysis	min
7	Salvelinus alpinus, age	S. alpinus age	a	Gantner, Nikolaus	Otholith analysis	max
8	Salvelinus alpinus, fork length	S. alpinus fork l	mm	Gantner, Nikolaus		average
9	Salvelinus alpinus, standard deviation	S. alpinus std dev	±	Gantner, Nikolaus		fork length
10	Salvelinus alpinus, fork length	S. alpinus fork l	mm	Gantner, Nikolaus		min
11	Salvelinus alpinus, fork length	S. alpinus fork l	mm	Gantner, Nikolaus		max
12	Salvelinus alpinus, δ15N, tissue	S. alpinus δ15N t	‰ air	Gantner, Nikolaus	Continuous Flow Isotope Ratio Mass Spectrometry (CF/IRMS)	average
13	Salvelinus alpinus, standard deviation	S. alpinus std dev	±	Gantner, Nikolaus	Continuous Flow Isotope Ratio Mass Spectrometry (CF/IRMS)	d15N
14	Salvelinus alpinus, δ15N, tissue	S. alpinus δ15N t	‰ air	Gantner, Nikolaus	Continuous Flow Isotope Ratio Mass Spectrometry (CF/IRMS)	min
15	Salvelinus alpinus, δ15N, tissue	S. alpinus δ15N t	‰ air	Gantner, Nikolaus	Continuous Flow Isotope Ratio Mass Spectrometry (CF/IRMS)	max
16	Mercury	Hg	mg/kg	Gantner, Nikolaus	Atomic absorption spectrometry (AAS) of cold vapor	geomean; per tissue wet wt
17	Mercury	Hg	mg/kg	Gantner, Nikolaus	Atomic absorption spectrometry (AAS) of cold vapor	min; per tissue wet wt
18	Mercury	Hg	mg/kg	Gantner, Nikolaus	Atomic absorption spectrometry (AAS) of cold vapor	max; per tissue wet wt
19	Caesium	Cs	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	geomean; per tissue wet wt
20	Caesium	Cs	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	min; per tissue wet wt
21	Caesium	Cs	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	max; per tissue wet wt
22	Potassium	K	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	geomean; per tissue wet wt
23	Potassium	K	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	min; per tissue wet wt
24	Potassium	K	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	max; per tissue wet wt
25	Selenium	Se	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	geomean; per tissue wet wt
26	Selenium	Se	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	min; per tissue wet wt
27	Selenium	Se	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	max; per tissue wet wt
28	Thallium	Tl	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	geomean; per tissue wet wt
29	Thallium	Tl	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	min; per tissue wet wt
30	Thallium	Tl	mg/kg	Gantner, Nikolaus	Inductively coupled plasma - mass spectrometry (ICP-MS)	max; per tissue wet wt

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

565 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Morphotype	2 Date/Time	3 S. alpinus [#] (used for aging; #45 = 45(43),...)	4 S. alpinus age [a] (average, Otholith analysis)	5 S. alpinus std dev [±] (age, Otholith analysis)	6 S. alpinus age [a] (min, Otholith analysis)	7 S. alpinus age [a] (max, Otholith analysis)	8 S. alpinus fork l [mm] (average)	9 S. alpinus std dev [±] (fork length)	10 S. alpinus fork l [mm] (min)	11 S. alpinus fork l [mm] (max)	12 S. alpinus δ15N t [‰ air] (average, Continuous Flow Isot...)	13 S. alpinus std dev [±] (d15N, Continuous Flow Isotope...)	14 S. alpinus δ15N t [‰ air] (min, Continuous Flow Isotope ...)	15 S. alpinus δ15N t [‰ air] (max, Continuous Flow Isotope ...)	16 Hg [mg/kg] (geomean; per tissue wet wt, A...)	17 Hg [mg/kg] (min; per tissue wet wt, Atomi...)	18 Hg [mg/kg] (max; per tissue wet wt, Atomi...)	19 Cs [mg/kg] (geomean; per tissue wet wt, I...)	20 Cs [mg/kg] (min; per tissue wet wt, Induc...)	21 Cs [mg/kg] (max; per tissue wet wt, Induc...)	22 K [mg/kg] (geomean; per tissue wet wt, I...)	23 K [mg/kg] (min; per tissue wet wt, Induc...)	24 K [mg/kg] (max; per tissue wet wt, Induc...)	25 Se [mg/kg] (geomean; per tissue wet wt, I...)	26 Se [mg/kg] (min; per tissue wet wt, Induc...)	27 Se [mg/kg] (max; per tissue wet wt, Induc...)	28 Tl [mg/kg] (geomean; per tissue wet wt, I...)	29 Tl [mg/kg] (min; per tissue wet wt, Induc...)	30 Tl [mg/kg] (max; per tissue wet wt, Induc...)
All fish	1990	#45	18.3	6.00	8	34	400	80	277	580	10.9	1.7	9.7	14.20	0.158	0.043	0.463
All fish	1992	20	20.9	4.70	11	28	439	92	342	618	11.6	2.1	7.4	14.10	0.288	0.111	0.898	0.005	0.0020	0.0120	4.236	3.50	5.62	1.563	1.23	1.94	0.010	0.003	0.019
All fish	2001	20	21.6	4.60	14	33	454	130	290	683	11.5	2.1	8.7	14.10	0.282	0.069	1.630	0.005	0.0020	0.0100	4.064	3.25	5.11	1.507	1.05	1.97	0.009	0.004	0.023
All fish	2003	20	19.1	5.40	9	29	447	11	344	670	11.3	1.8	8.5	13.50	0.163	0.060	0.555	0.006	0.0020	0.0120	4.276	3.61	4.95	1.202	0.90	2.10	0.009	0.003	0.015
All fish	2004	16	17.7	4.50	11	30	460	6	370	630	12.4	1.7	9.1	13.90	0.223	0.040	0.561	0.007	0.0030	0.0110	3.963	3.18	4.36	1.403	1.02	1.87	0.012	0.004	0.019
All fish	2005	7	23.3	3.50	19	27	493	12	370	680	11.9	2.3	8.8	13.90	0.278	0.072	0.723	0.005	0.0020	0.0090	3.597	3.33	3.78	1.563	1.29	1.76	0.010	0.005	0.025
All fish	2006	22	18.7	4.80	13	29	359	45	310	462	10.0	1.8	8.2	13.90	0.105	0.029	0.400	0.004	0.0020	0.0140	3.741	3.10	4.01	1.107	0.79	1.35	0.006	0.004	0.018
d15N < 12 per mil (small)	1990	#20	17.0	5.70	8	26	332	29	277	370					0.106	0.043	0.279
d15N < 12 per mil (small)	1992	10	21.7	3.60	13	26	364	13	342	389	9.7	1.0	7.4	11.20	0.171	0.111	0.324	0.003	0.0020	0.0050	4.375	3.68	5.62	1.521	1.23	194.00	0.006	0.003	0.010
d15N < 12 per mil (small)	2001	10	20.7	4.30	14	28	343	35	290	401	9.6	0.7	8.7	11.20	0.124	0.069	0.272	0.004	0.0020	0.0070	4.102	3.25	5.11	1.442	1.05	1.78	0.005	0.004	0.008
d15N < 12 per mil (small)	2003	10	20.2	4.30	12	27	377	21	244	404	9.7	1.0	8.5	9.70	0.101	0.060	0.151	0.004	0.0020	0.0090	4.140	3.61	4.68	1.205	0.90	2.10	0.006	0.003	0.011
d15N < 12 per mil (small)	2004	4	19.3	3.40	16	24	390	20	370	410	9.6	0.4	9.1	10.20	0.100	0.040	0.253	0.004	0.0030	0.0090	3.819	3.63	4.28	1.432	1.29	1.71	0.007	0.004	0.013
d15N < 12 per mil (small)	2005	3	22.3	4.20	19	27	378	10	370	390	9.4	0.6	8.8	9.90	0.121	0.072	0.197	0.002	0.0024	0.0025	3.698	3.67	3.76	1.656	1.52	1.76	0.006	0.005	0.009
d15N < 12 per mil (small)	2006	18	19.6	4.70	13	29	340	22	310	400	9.2	0.7	8.2	10.60	0.082	0.029	0.151	0.003	0.0020	0.0050	3.724	3.10	4.01	1.081	0.79	1.35	0.005	0.004	0.007
d15N > 12 per mil (large)	1990	#25	19.3	6.04	9	34	462	6	371	580					0.216	0.087	0.463
d15N > 12 per mil (large)	1992	10	20.0	5.60	11	28	514	73	410	618	13.6	0.4	13.1	14.10	0.488	0.224	0.898	0.009	0.0050	0.0120	4.111	3.50	4.63	1.607	1.43	1.84	0.017	0.013	0.214
d15N > 12 per mil (large)	2001	10	22.5	4.90	17	33	564	86	388	683	13.4	0.4	12.9	14.10	0.638	0.166	1.630	0.008	0.0060	0.0100	4.018	3.73	4.45	1.574	1.27	1.97	0.014	0.007	0.023
d15N > 12 per mil (large)	2003	10	18.0	6.40	9	29	517	121	356	670	12.8	0.5	12.1	13.50	0.264	0.111	0.555	0.010	0.0070	0.0120	4.426	3.77	4.95	1.199	1.00	1.50	0.013	0.011	0.018
d15N > 12 per mil (large)	2004	12	17.2	4.80	11	30	484	60	400	630	13.3	0.4	12.5	13.90	0.291	0.180	0.561	0.009	0.0070	0.0110	4.009	3.18	4.36	1.393	1.02	1.87	0.014	0.010	0.019
d15N > 12 per mil (large)	2005	#4	24.0	3.40	19	27	580	90	460	680	13.8	0.2	13.4	13.98	0.518	0.247	0.723	0.008	0.0070	0.0090	3.516	3.33	3.78	1.496	1.29	1.74	0.015	0.012	0.025
d15N > 12 per mil (large)	2006	4	14.7	2.80	13	19	443	21	420	462	13.3	0.4	13.0	13.91	0.334	0.229	0.400	0.010	0.0060	0.0140	3.811	3.67	3.99	1.225	1.15	1.35	0.015	0.009	0.018