Citation:

s00300-003-0526-8

Name: Effects of varying food-availability on ecology and distribution of smallest benthic organisms in sediments of the arctic Fram Strait during POLARSTERN cruise ARK-XV/2
Published: 2003
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

With the aims of investigating the response of the smallest benthic biota to a strong ice-edge-related input of phytodetritus, and of registering supposed lateral transportation processes of phytodetrital matter with northerly direction under the ice, we analysed a number of abiotic and biotic parameters in surface sediments from the northern Fram Strait. Two transects of 14 stations in total were made. One transect, crossing the Fram Strait from the east to the west, followed mainly the ice edge. The second transect extended latitudinally in a northerly direction, starting in ice-free areas, passing the ice edge, and ending in heavy ice-covered areas, approximately 100 nm north of the ice edge. Stations along this transect were sampled at almost constant water depths to avoid depth-related influences in our investigations. Results showed the expected high phytodetritus concentrations in the ice-edge vicinity. Concentrations of sediment-bound plant pigments were approximately 5 times higher than in ice-covered areas, indicating a very strong phytodetritus input. With increasing distance from the highly productive areas at the ice edge, we found significantly decreasing concentrations of phytodetrital input to the seafloor in a northerly direction. Within the foraminiferans, generic diversity was clearly reduced in the area of strong phytodetritus deposition. Along the latitudinal transect, out of the direct ice-edge influence, foraminiferal diversities slowly increased within increasing distance from the ice edge. The integration of results from earlier foraminiferal investigations, from stations further to the north, indicates a once more decreasing diversity with continually decreasing food supply.

Project(s):

Bentho-Pelagic Processes @ AWI (AWI_BPP)

Hotspot Ecosystem Research on the Margins of European Seas (HERMES)

Funding:

Sixth Framework Programme (FP6), grant/award no. 511234 : Hotspot Ecosystem Research on the Margins of European Seas

Coverage:

Median Latitude: 80.509922 * Median Longitude: 1.486825 * South-bound Latitude: 79.868333 * West-bound Longitude: -5.123333 * North-bound Latitude: 81.440667 * East-bound Longitude: 5.998333

Date/Time Start: 1999-07-27T00:32:00 * Date/Time End: 1999-08-31T04:21:00

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.045 m

Event(s):

PS55/077-3 * Latitude: 80.150000 * Longitude: 3.816667 * Date/Time: 1999-07-27T00:32:00 * Elevation: -1475.0 m * Recovery: 0.35 m * Location: Fram Strait * Campaign: (PS55) * Basis: * Method/Device: MultiCorer (MUC)

PS55/079-3 * Latitude: 80.148333 * Longitude: 1.970000 * Date/Time: 1999-07-27T12:22:00 * Elevation: -2156.0 m * Location: Fram Strait * Campaign: (PS55) * Basis: * Method/Device: MultiCorer (MUC) * Comment: MUC am Grund

PS55/080-3 * Latitude: 80.125000 * Longitude: 1.091667 * Date/Time: 1999-07-27T17:18:00 * Elevation: -2878.0 m * Location: Fram Strait * Campaign: (PS55) * Basis: * Method/Device: MultiCorer (MUC) * Comment: MUC im Grund 2816 m

Comment:

Depth, sediment = habitat depth

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	DEPTH, sediment/rock	Depth sed	m			Geocode
6	Chlorophyll a	Chl a	µg/cm³	Schewe, Ingo
7	Phaeopigments	Phae	µg/cm³	Schewe, Ingo
8	Phospholipids	PL	nmol/ml	Schewe, Ingo
9	Adenylates, total	Adenylates	pmol/cm³	Schewe, Ingo
10	Esterase activity per sediment volume	FDA	nmol/ml/h	Schewe, Ingo
11	Meiofauna, abundance	Meiof	#/10 cm²	Schewe, Ingo
12	Nematoda	Nematoda	#/m²	Schewe, Ingo
13	Meiofauna, abundance of harpacticoida	Meiof harpact ab	#/m²	Schewe, Ingo
14	Meiofauna, abundance of metazoa	Meiof metaz abund	#/m²	Schewe, Ingo
15	Meiofauna, abundance of foraminifera	Meiof foram ab	#/m²	Schewe, Ingo
16	Bacteria, abundance	Bact abund	10⁹ #/cm³	Schewe, Ingo
17	Bacteria, biomass as carbon	Bact C	µg/cm³	Schewe, Ingo
18	Bacteria, heterotrophic, cell biovolume	HBA cell vol	µm³	Schewe, Ingo
19	Phospholipids	PL	nmol/ml	Schewe, Ingo	Photometry (Boetius & Lochte, 1994)
20	Esterase activity per sediment volume	FDA	nmol/ml/h	Schewe, Ingo	Incubation (INCUB)
21	Bacteria, abundance	Bact abund	10⁹ #/cm³	Schewe, Ingo	Epifluorescence microscopy (Boetius et al. 2000)
22	Bacteria, biomass as carbon	Bact C	µg/cm³	Schewe, Ingo	Carbon biomass estimation (unspec.)

License:

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

Size:

800 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Depth sed [m]	6 Chl a [µg/cm³]	7 Phae [µg/cm³]	8 PL [nmol/ml]	9 Adenylates [pmol/cm³]	10 FDA [nmol/ml/h]	11 Meiof [#/10 cm²]	12 Nematoda [#/m²]	13 Meiof harpact ab [#/m²]	14 Meiof metaz abund [#/m²]	15 Meiof foram ab [#/m²]	16 Bact abund [10⁹ #/cm³]	17 Bact C [µg/cm³]	18 HBA cell vol [µm³]	19 PL [nmol/ml] (Photometry (Boetius & Lochte,...)	20 FDA [nmol/ml/h] (Incubation)	21 Bact abund [10⁹ #/cm³] (Epifluorescence microscopy (B...)	22 Bact C [µg/cm³] (Carbon biomass estimation (un...)
PS55/077-3	80.1500	3.8167	-1475	0.005	0.947	5.631	16.76	122.49	2.70	13200	441429	90000	587143	734286	1.365	28.873	0.081
PS55/077-3	80.1500	3.8167	-1475	0.015	0.208	3.693	12.64	49.08	3.23	6429	272857	22857	310000	334286	0.196	4.221	0.084
PS55/077-3	80.1500	3.8167	-1475	0.025	0.046	2.912	16.40	56.49	4.25	3029	120000	8571	137143	165714	0.783	16.282	0.079
PS55/077-3	80.1500	3.8167	-1475	0.035	0.022	2.196	11.18	58.85	3.50						0.387	7.146	0.065
PS55/077-3	80.1500	3.8167	-1475	0.045	0.006	1.906	11.46	69.12	2.18						0.196	3.207	0.053
PS55/079-3	80.1483	1.9700	-2156	0.005	0.480	3.616	4.29	166.29	4.15	10743	280000	24286	320000	754286	0.536	10.316	0.069
PS55/079-3	80.1483	1.9700	-2156	0.015	0.100	2.507	2.61	92.99	2.13	4286	208571	1429	211429	217143	0.056	1.099	0.071
PS55/079-3	80.1483	1.9700	-2156	0.025	0.025	1.971	2.63	75.68	1.73	2400	92857	4286	97143	142857	0.205	3.677	0.062
PS55/079-3	80.1483	1.9700	-2156	0.035	0.027	2.023	2.13	82.57	1.28						0.652	11.744	0.062
PS55/079-3	80.1483	1.9700	-2156	0.045	0.018	1.489	2.77	93.89	0.54						0.391	7.012	0.061
PS55/080-3	80.1250	1.0917	-2878	0.005	0.492	3.389	2.05	130.87	1.43	5971	154286	21429	177143	420000	0.843	15.740	0.066
PS55/080-3	80.1250	1.0917	-2878	0.015	0.091	2.637	2.81	61.56	0.91	2600	145714	1429	150000	111429	0.049	0.855	0.060
PS55/080-3	80.1250	1.0917	-2878	0.025	0.044	1.788	3.02	69.50	2.34	2600	77143	4286	82857	177143	0.363	5.701	0.049
PS55/080-3	80.1250	1.0917	-2878	0.035	0.022	1.745	1.64	65.72	2.42						0.871	14.576	0.055
PS55/080-3	80.1250	1.0917	-2878	0.045	0.020	1.608	2.34	54.75	2.71						0.471	8.403	0.061
PS55/081-3	80.1967	0.2717	-3114	0.005	0.632	2.511	3.44	61.81	3.27	17429	392857	32857	452857	1291429	1.235	26.067	0.081
PS55/081-3	80.1967	0.2717	-3114	0.015	0.066	1.566	1.84	31.32	1.76	3371	118571	4286	128571	208571	0.043	0.907	0.081
PS55/081-3	80.1967	0.2717	-3114	0.025	0.017	0.759	1.08	25.55	2.03	1771	71429	2857	75714	100000	0.308	6.734	0.086
PS55/081-3	80.1967	0.2717	-3114	0.035	0.011	0.510	1.01	25.55	1.54						0.284	5.295	0.066
PS55/081-3	80.1967	0.2717	-3114	0.045	0.008	0.559	3.03	27.20	1.67						0.196	3.960	0.076
PS55/082-3	80.1033	-1.4783	-2941	0.005	0.405	2.014	4.17	32.91	3.45	6014	157143	11429	177143	425714	1.058	23.428	0.088
PS55/082-3	80.1033	-1.4783	-2941	0.015	0.067	0.996	2.21	45.13	2.22	1600	58571	2857	65714	97143	0.020	0.457	0.094
PS55/082-3	80.1033	-1.4783	-2941	0.025	0.015	0.629	1.72	40.43	2.74	800	22857	5714	28571	51429	0.471	9.819	0.080
PS55/082-3	80.1033	-1.4783	-2941	0.035	0.017	1.029	1.76	21.62	2.89						0.349	8.222	0.097
PS55/082-3	80.1033	-1.4783	-2941	0.045	0.005	0.394	1.35	44.19	2.43						0.135	2.709	0.074
PS55/083-3	79.9833	-3.5556	-2344	0.005	0.014	0.817	6.10	55.95	0.61	6386	221429	31429	264286	374286	0.471	10.906	0.095
PS55/083-3	79.9833	-3.5556	-2344	0.015	0.009	0.580	6.09	20.52	0.31	1229	45714		50000	77143	0.043	0.862	0.073
PS55/083-3	79.9833	-3.5556	-2344	0.025	0.004	0.297	5.01	5.60	0.40	371	8571	2857	11429	25714	0.382	6.801	0.061
PS55/083-3	79.9833	-3.5556	-2344	0.035	0.001	0.128	4.41	27.98	0.34						0.154	3.563	0.095
PS55/083-3	79.9833	-3.5556	-2344	0.045	0.001	0.109	5.31	16.79	0.11						0.116	2.484	0.083
PS55/084-3	79.9300	-5.1233	-1144	0.005	0.035	1.293	2.64	60.04	0.74	8100	245714	61429	337143	474286	0.471	8.376	0.061
PS55/084-3	79.9300	-5.1233	-1144	0.015	0.020	0.834	2.95	35.62	0.43	3886	162857	14286	182857	205714	0.058	1.003	0.057
PS55/084-3	79.9300	-5.1233	-1144	0.025	0.009	0.591	2.38	20.35	0.46	1629	88571	8571	102857	60000	0.158	2.777	0.059
PS55/084-3	79.9300	-5.1233	-1144	0.035	0.005	0.307	1.97	27.48	0.34						0.121	2.385	0.072
PS55/084-3	79.9300	-5.1233	-1144	0.045	0.004	0.340	2.17	34.60	0.30						0.056	0.651	0.030
PS55/092-3	80.8282	2.8512	-1021	0.005	0.210	3.006	3.82	305.78	0.50	8143	265714	31429	334286	480000	0.811	14.394	0.060
PS55/092-3	80.8282	2.8512	-1021	0.015	0.094	2.412	3.56	167.48	0.35	6643	331429	8571	367143	297143	0.061	1.088	0.061
PS55/092-3	80.8282	2.8512	-1021	0.025	0.066	2.704	4.30	236.82	0.44	6014	267143		287143	314286	0.652	11.209	0.057
PS55/092-3	80.8282	2.8512	-1021	0.035	0.050	2.781	3.47	152.28	0.46						0.377	6.894	0.063
PS55/092-3	80.8282	2.8512	-1021	0.045	0.063	2.452	3.04	109.72	0.81						0.475	8.313	0.059
PS55/094-1	81.0300	2.3067	-1110	0.005	0.133	1.970	1.53								0.690	11.352	0.053
PS55/094-1	81.0300	2.3067	-1110	0.015	0.045	1.835	1.81								0.052	0.927	0.060
PS55/094-1	81.0300	2.3067	-1110	0.025	0.039	2.530	2.14								0.676	12.136	0.062
PS55/094-1	81.0300	2.3067	-1110	0.035	0.042	2.433	1.33								0.475	8.840	0.065
PS55/094-1	81.0300	2.3067	-1110	0.045	0.027	1.894	0.89								0.513	8.645	0.055
PS55/095-1	81.2667	3.3667	-750	0.005	0.070	2.573		174.85		9286	260000	37143	324286	605714			0.055	5.23	0.46	1.058	17.732
PS55/095-1	81.2667	3.3667	-750	0.015	0.027	1.853		135.16		2200	107143	4286	118571	102857			0.059	4.57	0.27	0.046	0.797
PS55/095-1	81.2667	3.3667	-750	0.025	0.016	1.397		114.07		3229	151429	4286	168571	157143			0.045	4.84	0.34	0.494	7.408
PS55/095-1	81.2667	3.3667	-750	0.035	0.021	1.630		111.94									0.048	4.48	0.34	0.359	5.578
PS55/095-1	81.2667	3.3667	-750	0.045	0.025	1.524		80.87									0.043	3.79	0.30	0.741	10.737
PS55/096-1	81.4407	4.0568	-765	0.005	0.185	3.275	3.57	99.94	3.29	4714	192857	14286	231429	242857	0.834	11.008	0.037
PS55/096-1	81.4407	4.0568	-765	0.015	0.039	2.449	4.33	77.41	1.88	2371	147143	8571	164286	74286	0.083	1.542	0.065
PS55/096-1	81.4407	4.0568	-765	0.025	0.049	2.469	3.16	62.31	2.42	1629	80000	1429	81429	80000	1.146	20.281	0.060
PS55/096-1	81.4407	4.0568	-765	0.035	0.047	2.714	3.88	56.80	1.89						0.429	6.677	0.048
PS55/096-1	81.4407	4.0568	-765	0.045	0.065	3.063	5.44	36.43	1.73						0.280	3.670	0.036
PS55/098-1	81.1667	1.2833	-1680	0.005	0.032	2.090	2.98	151.62	0.57	5686	255714	15714	298571	271429	1.253	23.873	0.068
PS55/098-1	81.1667	1.2833	-1680	0.015	0.015	1.464	2.46	101.92	0.37	3143	185714		188571	125714	0.029	0.492	0.057
PS55/098-1	81.1667	1.2833	-1680	0.025	0.008	1.111	3.60	67.56	0.37	1543	100000		102857	51429	0.322	5.513	0.057
PS55/098-1	81.1667	1.2833	-1680	0.035	0.007	1.082	2.77	76.49	0.43						0.186	3.200	0.057
PS55/098-1	81.1667	1.2833	-1680	0.045	0.007	0.897	3.64	65.42	0.48						0.545	10.801	0.073
PS55/099-1	80.9167	2.4950	-1077	0.005	0.304	3.912	8.97	132.66	0.52	10657	280000	42857	350000	711429	0.839	14.587	0.058
PS55/099-1	80.9167	2.4950	-1077	0.015	0.114	3.418	10.48	106.86	0.39	3329	172857	8571	182857	151429	0.056	0.912	0.053
PS55/099-1	80.9167	2.4950	-1077	0.025	0.131	3.272	9.24	72.45	0.41	5414	307143	18571	331429	211429	0.606	9.712	0.051
PS55/099-1	80.9167	2.4950	-1077	0.035	0.266	3.667	12.52	104.77	0.41						1.030	16.268	0.050
PS55/099-1	80.9167	2.4950	-1077	0.045	0.586	3.456	11.20	67.50	0.44						1.086	17.565	0.052
PS55/100-1	80.4950	2.9517	-1534	0.005	0.201	3.073	4.35	79.21	0.27	3543	178571	10000	194286	160000	1.076	15.197	0.041
PS55/100-1	80.4950	2.9517	-1534	0.015	0.112	3.071	5.25	70.92	0.21	4786	177143	2857	187143	291429	0.024	0.412	0.056
PS55/100-1	80.4950	2.9517	-1534	0.025	0.096	3.029	4.90	75.36	0.19	1143	45714	1429	50000	65714	0.089	1.339	0.046
PS55/100-1	80.4950	2.9517	-1534	0.035	0.085	2.222	2.92	71.81	0.36						0.415	7.481	0.062
PS55/100-1	80.4950	2.9517	-1534	0.045	0.034	1.653	3.15	47.08	0.61	924	16190		16190	76190	0.769	13.994	0.063
PS55/157-1	79.8683	5.9983	-1013	0.005	0.622	4.313	3.53	91.59	2.01	13643	462857	88571	580000	782857	0.969	17.675	0.063
PS55/157-1	79.8683	5.9983	-1013	0.015	0.353	5.418	2.15	55.09	1.44	9343	374286	61429	461429	474286	0.066	1.148	0.059
PS55/157-1	79.8683	5.9983	-1013	0.025	0.347	4.469	2.83	35.13	2.41	4357	201429	7143	217143	220000	0.806	12.489	0.048
PS55/157-1	79.8683	5.9983	-1013	0.035	0.183	3.935	1.62	45.37	3.92						0.559	9.436	0.056
PS55/157-1	79.8683	5.9983	-1013	0.045	0.159	3.718	3.61	12.96	3.20						0.638	10.162	0.050