TABLE 1. Location and water depth of the surface samples and sediment cores (in bold). Surface samples were taken with box and grab corer (BG, KG) and from top of sediment cores recovered with vibrocorer (VC*). All cores were drilled with vibrocorer (VC).
|
No. |
Location |
Date |
Latitude |
Longitude |
Depth [m] |
Gear |
|
326-1 |
Alboran Platform |
16.08.2006 |
35°52.450´N |
3°05.150´W |
102 |
BG |
|
327-1 |
Alboran Platform |
16.08.2006 |
35°53.890´N |
3°05.950´W |
115 |
BG |
|
328-1 |
Alboran Platform |
16.08.2006 |
35°55.130´N |
3°03.311´W |
69 |
BG |
|
329-1 |
Alboran Platform |
16.08.2006 |
35°55.200´N |
3°02.820´W |
60 |
BG |
|
330-1 |
Alboran Platform |
16.08.2006 |
35°56.200´N |
3°00.690´W |
63 |
BG |
|
331-1 |
Alboran Platform |
16.08.2006 |
35°59.300´N |
2°59.500´W |
86 |
BG |
|
332-2 |
Alboran Platform |
16.08.2006 |
35°59.510´N |
2°57.210´W |
83 |
BG |
|
333-1 |
Alboran Platform |
16.08.2006 |
36°00,655´N |
2°49,732´W |
161 |
BG |
|
334-1 |
Alboran Platform |
16.08.2006 |
35°57.500´N |
2°56.020´W |
97 |
BG |
|
335-1 |
Alboran Platform |
16.08.2006 |
35°58.035´N |
2°59.890´W |
73 |
BG |
|
336-1 |
Alboran Platform |
16.08.2006 |
35°54.450´N |
3°05.535´W |
91 |
BG |
|
341-2 |
Alboran Platform |
17.08.2006 |
35°55.103´N |
3°02.194´W |
53 |
VC* |
|
342-1 |
Alboran Platform |
17.08.2006 |
35°56.400´N |
3°00.213´W |
64 |
VC* |
|
342-1 |
Alboran Platform |
17.08.2006 |
35°56.400´N |
3°00.213´W |
64 |
VC |
|
343-2 |
Alboran Platform |
17.08.2006 |
35°55.588´N |
3°01.915´W |
38 |
VC* |
|
351-1 |
Oran Bight |
19.08.2006 |
35°48.490´N |
0°34.000´W |
70 |
BG |
|
352-1 |
Oran Bight |
19.08.2006 |
35°47.500´N |
0°33.810´W |
48 |
KG |
|
353-1 |
Oran Bight |
19.08.2006 |
35°47.230´N |
0°37.650´W |
73 |
BG |
|
354-1 |
Oran Bight |
19.08.2006 |
35°45.872´N |
0°40.232´W |
84 |
BG |
|
355-1 |
Oran Bight |
19.08.2006 |
35°50.696´N |
0°35.306´W |
127 |
BG |
|
356-1 |
Oran Bight |
19.08.2006 |
35°50.207´N |
0°35.000´W |
118 |
BG |
|
357-1 |
Oran Bight |
19.08.2006 |
35°51.204´N |
0°33.092´W |
100 |
BG |
|
357-2 |
Oran Bight |
19.08.2006 |
35°51.198´N |
0°33.092´W |
100 |
KG |
|
358-1 |
Oran Bight |
20.08.2006 |
35°50.802´N |
0°32.700´W |
85 |
BG |
|
359-1 |
Oran Bight |
20.08.2006 |
35°50.200´N |
0°32.000´W |
78 |
BG |
|
360-1 |
Oran Bight |
20.08.2006 |
35.49.890´N |
0°31.600´W |
83 |
BG |
|
361-1 |
Oran Bight |
20.08.2006 |
35°49.990´N |
0°30.510´W |
67 |
BG |
|
362-1 |
Oran Bight |
20.08.2006 |
35°50.895´N |
0°29.496´W |
20 |
KG |
|
363-1 |
Oran Bight |
20.08.2006 |
35°52.110´N |
0°30.500´W |
97 |
BG |
|
364-1 |
Oran Bight |
20.08.2006 |
35°52.900´N |
0°30.800´W |
121 |
BG |
|
365-1 |
Oran Bight |
20.08.2006 |
35°53.900´N |
0°31.297´W |
130 |
BG |
|
367-1 |
Oran Bight |
20.08.2006 |
35°48.000´N |
0°33.700´W |
63 |
VC |
|
373-1 |
Oran Bight |
20.08.2006 |
35.49.664´N |
0°34.673´W |
90 |
BG |
|
374-1 |
Oran Bight |
20.08.2006 |
35°50.005´N |
0°34.886´W |
100 |
BG |
|
375-1 |
Oran Bight |
20.08.2006 |
35.51.105´N |
0°35.526´W |
115 |
BG |
|
377-1 |
Mallorca Shelf |
24.08.2006 |
39°18.879´N |
2°47.827´E |
47 |
BG |
|
378-1 |
Mallorca Shelf |
24.08.2006 |
39°21.192´N |
2°47.810´E |
40 |
BG |
|
379-1 |
Mallorca Shelf |
24.08.2006 |
39°19.601´N |
2°46.208´E |
48 |
BG |
|
380-1 |
Mallorca Shelf |
24.08.2006 |
39°18.098´N |
2°44.702´E |
56 |
BG |
|
381-1 |
Mallorca Shelf |
24.08.2006 |
39°17.005´N |
2°43.300´E |
67 |
BG |
|
382-1 |
Mallorca Shelf |
24.08.2006 |
39°16.101´N |
2°42.196´E |
74 |
BG |
|
384-1 |
Mallorca Shelf |
24.08.2006 |
39°18.095´N |
2°49.013´E |
61 |
BG |
|
387-1 |
Mallorca Shelf |
24.08.2006 |
39°15.503´N |
2°41.498´E |
80 |
BG |
|
388-1 |
Mallorca Shelf |
24.08.2006 |
39°15.214´N |
2°41.089´E |
94 |
BG |
|
390-1 |
Mallorca Shelf |
24.08.2006 |
39°14.830´N |
2°40.532´E |
116 |
BG |
|
391-1 |
Mallorca Shelf |
24.08.2006 |
39°13.610´N |
2°39.090´E |
163 |
BG |
|
393-1 |
Mallorca Shelf |
25.08.2006 |
39°10.601´N |
2°40.398´E |
235 |
KG |
|
401-1 |
Mallorca Shelf |
25.08.2006 |
39°17.101´N |
2°48.305´E |
74 |
VC |
|
403-1 |
Mallorca Shelf |
25.08.2006 |
39°14.798´N |
2.45.524´E |
94 |
BG |
|
404-1 |
Mallorca Shelf |
25.08.2006 |
39°13.970´N |
2°44.496´E |
105 |
BG |
TABLE 2. Recent abundance and water depth distribution and fossil abundance of the described species. Species have been classified, depending on their abundance on the total recent and fossil assemblages in percent in the three investigated areas, into the following categories: (o) = extremely rare; o = very rare (<1%); oo = rare (1-5%); ooo = frequent (5-10%), oooo = abundant (10-25%) and ooooo = dominant (>25%). The distribution of fossil species that are abundant in at least 1/3 of the core samples have been listed into the following time intervals: late Holocene (<3500 cal. years BP), middle Holocene (3500 - 6500 cal. years BP), early Holocene (6500 - 11 700 cal. years BP) and the late glacial period (>11 700 cal. years BP). The distribution of fossil species that are extremely rare and only occur in a few core samples is not given here except for those that have been only found in the fossil assemblages (* summarized to Ammonia spp., ** summarized to Asterigerinata mamilla s.l.) (in PDF only).
TABLE 3. Summary of Principal Component Analysis (PCA) in Q-Mode of the dead assemblages in the surface samples from the Alboran Platform, Oran Bight and Mallorca Shelf. Given are the dominant species and the most important associated species with their scores. Further, the explained variance for the principal components (PCs) is listed.
|
Alboran Platform |
|||
|
PC-axis |
Variance [%] |
Species |
Score |
|
1 |
56.8 |
Cassidulina obtusa |
3.44 |
|
|
|
Globocassidulina subglobulosa |
2.96 |
|
|
|
Gavelinopsis praegeri |
1.65 |
|
2 |
16.8 |
Asterigerinata mamilla s.l. |
4.47 |
|
|
|
Elphidium complanatum |
1.91 |
|
|
|
Lobatula lobatula |
1.59 |
|
3 |
8.4 |
Elphidium complanatum |
3.28 |
|
|
|
Cibicides refulgens |
3.18 |
|
|
|
Cibicidoides pseudoungerianus |
1.36 |
|
4 |
7.7 |
Cibicidoides pseudungerianus |
4.71 |
|
|
|
Cassidulina obtusa |
1.48 |
|
|
|
Asterigerinata mamilla s.l. |
1.26 |
|
Oran Bight |
|||
|
PC-axis |
Variance [%] |
Species |
Score |
|
1 |
42.2 |
Globocassidulina subglobulosa |
5.03 |
|
|
|
Cassidulina obtusa |
2.03 |
|
|
|
Spiroplectinella sagittula |
1.42 |
|
2 |
15.1 |
Cassidulina laevigata s.l. |
5.59 |
|
|
|
Globocassidulina oblonga |
2.39 |
|
3 |
11.1 |
Gaudryina rudis |
3.36 |
|
|
|
Lobatula lobatula |
2.52 |
|
|
|
Eponides concameratus |
2.20 |
|
4 |
8.0 |
Asterigerinata mamilla s.l. |
5.26 |
|
|
|
Rosalina macropora |
1.89 |
|
|
|
Discorbinella bertheloti |
1.64 |
|
5 |
5.8 |
Lobatula lobatula |
4.37 |
|
|
|
Neoconorbina terquemi |
2.31 |
|
|
|
Cibicidoides pseudoungerianus |
1.96 |
|
Mallorca Shelf |
|||
|
PC-axis |
Variance [%] |
Species |
Score |
|
1 |
35.1 |
Neoconorbina terquemi |
5.18 |
|
|
|
Asterigerinata mamilla s.l. |
3.71 |
|
|
|
Lobatula lobatula |
1.45 |
|
2 |
25.9 |
Cassidulina laevigata s.l. |
5.72 |
|
|
|
Bulimina elongata |
2.10 |
|
|
|
Hyalinea balthica |
1.45 |
|
3 |
14.2 |
Spiroplectinella sagittula |
5.34 |
|
|
|
Asterigerinata mamilla s.l. |
1.66 |
|
|
|
Lobatula lobatula |
1.54 |
|
4 |
7.9 |
Gavelinopsis praegeri |
5.23 |
|
|
|
Globocassidulina subglobulosa |
1.91 |
|
|
|
Cassidulina obtusa |
1.86 |
|
5 |
7.4 |
Lobatula lobatula |
4.62 |
|
|
|
Textularia calva |
1.71 |
|
|
|
Gaudyrina rudis |
1.38 |
TABLE 4. Statistical output of the Redundancy Analysis (RDA) applied on the dead fauna in the surface samples. For the analysis, binary “dummy” variables for Alboran Platform, Oran Bight and Mallorca Shelf were used as covariables (see Milker et al., 2009).
|
|
Axis 1 |
Axis 2 |
Axis 3 |
Axis 4 |
Captured variance (%) |
F value |
p value |
|
eigenvalues |
0.141 |
0.042 |
0.011 |
0.009 |
|
|
|
|
species-environment correlations |
0.778 |
0.619 |
0.595 |
0.553 |
|
|
|
|
cumulative percentage variance |
|
|
|
|
|
|
|
|
of species data |
19.0 |
24.7 |
26.2 |
27.4 |
|
|
|
|
of species-environment relation |
67.1 |
87.2 |
92.4 |
96.7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Correlation |
|
|
|
|
|
|
|
|
water depth |
0.8071 |
-0.2602 |
0.1625 |
0.0757 |
12.9 |
6.25 |
<0.0002 |
|
salinity |
-0.7063 |
-0.1551 |
-0.0939 |
0.0479 |
9.9 |
4.62 |
<0.0002 |
|
>1000 µm |
-0.4778 |
-0.6811 |
0.3586 |
-0.3236 |
7.3 |
3.33 |
<0.0058 |
|
chlorophyll a |
-0.5153 |
0.4498 |
0.6924 |
-0.0721 |
6.9 |
3.13 |
<0.0058 |
|
<63 µm |
0.4628 |
0.3682 |
-0.4030 |
-0.4219 |
5.4 |
2.39 |
<0.0276 |
|
temperature |
-0.2025 |
0.4289 |
0.2573 |
-0.6046 |
2.5 |
1.10 |
<0.3348 |
TABLE 5. Summary of Principal Component Analysis (PCA) in Q-Mode of the fossil assemblages in the sediment cores from the Alboran Platform, Oran Bight and Mallorca Shelf. Given are the dominant species and the most important associated species with their scores. Further, the explained variance for the principal components (PCs) is listed.
|
Core 342-1 (Alboran Platform) |
|||
|
PC Axis |
Variance [%] |
Species |
Score |
|
1 |
37.8 |
Asterigerinata mamilla |
5.894 |
|
|
|
Elphidium complanatum |
5.732 |
|
|
|
Spirillina vivipara |
2.389 |
|
|
|
Brizalina difformis |
1.372 |
|
2 |
33.7 |
Lobatula lobatula |
7.448 |
|
|
|
Elphidium sp. 1 |
4.296 |
|
|
|
Elphidium complanatum forma tyrrhenianum |
1.883 |
|
|
|
Elphidium aculeatum |
1.243 |
|
3 |
14.0 |
Cibicidoides pseudoungerianus |
6.409 |
|
|
|
Globocassidulina subglobosa |
2.724 |
|
|
|
Globocassidulina obtusa |
2.434 |
|
|
|
Lobatula lobatula |
2.331 |
|
Core 367-1 (Oran Bight) |
|||
|
PC Axis |
Variance [%] |
Species |
Score |
|
1 |
50.9 |
Asterigerinata mamilla |
4.740 |
|
|
|
Lobatula lobatula |
3.895 |
|
|
|
Quinqueloculina stelligera |
1.944 |
|
|
|
Rosalina macropora |
1.792 |
|
2 |
44.9 |
Asterigerinata mamilla |
5.085 |
|
|
|
Globocassidulina subglobosa |
2.874 |
|
|
|
Discorbinella bertheloti |
2.826 |
|
|
|
Elphidium complanatum |
2.096 |
|
Core 401-1 (Mallorca Shelf) |
|||
|
PC Axis |
Variance [%] |
Species |
Score |
|
1 |
33.6 |
Neoconorbina terquemi |
9.783 |
|
|
|
Tretomphalus sp. 1 |
2.406 |
|
2 |
34.1 |
Tretomphalus concinnus |
7.798 |
|
|
|
Sigmoilinita costata |
2.564 |
|
|
|
Spirorbina sp. 1 |
2.412 |
|
|
|
Quinqueloculina stelligera |
2.369 |
|
3 |
17.5 |
Cassidulina laevigata s.l. |
9.227 |
|
|
|
Tretomphalus sp. 1 |
2.374 |
|
|
|
Reussella spinulosa |
1.642 |
|
|
|
Spirillina vivipara |
1.033 |
Palaeontologia
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