Citation:

scimar.2005.69s2103

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Abstract:

The 78 bryozoan species collected by the German R/V "Polarstern" during the LAMPOS cruise in April 2002, encompassing the Scotia Arc archipelagos between Tierra del Fuego and the Antarctic Peninsula, were studied to discern the biogeographical patterns of the Magellan region of South America, the Scotia Arc archipelagos and the Antarctic. The resulting dendrogram shows three clusters: an isolated one with the three easternmost archipelagos and the other two linking some of the northern and southern Scotia Arc archipelagos with Tierra del Fuego. A more comprehensive analysis using all the species previously recorded from the Scotia Arc archipelagos and adjacent areas (214 spp.) produced a clearer zoogeographical pattern without isolated clusters of localities. The Antarctic Peninsula plus the Scotia Arc archipelagos form a large cluster distinct from the Magellan-Falkland Subantarctic area. A third analysis making use of 78 genera present in the study area plus Australia and New Zealand reinforces this pattern, showing two clusters: one uniting South America and the Australian-New Zealand realm and the other linking the Scotia Arc archipelagos with the Antarctic Peninsula. These results indicate that the Scotia Arc archipelagos represent merely a very narrow bridge connecting two different bryozoan faunas with only a few bryozoan species in common between the study areas.

Project(s):

Bentho-Pelagic Processes @ AWI (AWI_BPP)

Coverage:

Median Latitude: -58.543373 * Median Longitude: -49.514133 * South-bound Latitude: -61.400600 * West-bound Longitude: -62.022100 * North-bound Latitude: -53.396700 * East-bound Longitude: -26.464900

Date/Time Start: 2002-04-05T11:38:00 * Date/Time End: 2002-04-25T14:24:00

Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m

Event(s):

PS61/145-1 * Latitude: -54.022600 * Longitude: -62.022100 * Date/Time: 2002-04-05T11:38:00 * Elevation: -272.0 m * Location: South Atlantic Ocean * Campaign: (PS61 LAMPOS) * Basis: * Method/Device: Agassiz Trawl (AGT)

PS61/153-1 * Latitude Start: -54.520300 * Longitude Start: -56.148900 * Latitude End: -54.500600 * Longitude End: -56.138900 * Date/Time Start: 2002-04-06T18:39:00 * Date/Time End: 2002-04-06T18:59:00 * Elevation Start: -296.0 m * Elevation End: -277.0 m * Location: South Atlantic Ocean * Campaign: (PS61 LAMPOS) * Basis: * Method/Device: Bottom trawl (BT)

PS61/164-1 * Latitude Start: -53.396700 * Longitude Start: -42.700500 * Latitude End: -53.397000 * Longitude End: -42.707600 * Date/Time Start: 2002-04-09T16:30:00 * Date/Time End: 2002-04-09T16:44:00 * Elevation Start: -313.0 m * Elevation End: -322.0 m * Location: South Atlantic Ocean * Campaign: (PS61 LAMPOS) * Basis: * Method/Device: Agassiz Trawl (AGT)

Comment:

Abbreviations of zoarial forms in last line (not_given): A = adeoniform (6.4%), RE = reteporiform (5.1%), BU = buguliform (10.25%), Cel = celleporiform (3.85%), F = flustriform (15.4%), CE = cellariiform(12.6%), V = vinculariiform (6.4%), E = eschariform (5.1%), I = encrusting (32%), CA = catenicelliform (2.6%)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	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	Acanthophragma polaris	A. polaris		Moyano G, Hugo I	?
7	Adelascopora jeqolqa	A. jeqolqa		Moyano G, Hugo I
8	Adelascopora secunda	A. secunda		Moyano G, Hugo I
9	Amastigia sp.	Amastigia sp.		Moyano G, Hugo I
10	Antarcticaetos bubeccata	A. bubeccata		Moyano G, Hugo I
11	Aspidostoma coronatum	A. coronatum		Moyano G, Hugo I
12	Aulopocella brachyrhyncha	A. brachyrhyncha		Moyano G, Hugo I
13	Austroflustra australis	A. australis		Moyano G, Hugo I
14	Austroflustra gerlachi	A. gerlachi		Moyano G, Hugo I
15	Austroflustra vulgaris	A. vulgaris		Moyano G, Hugo I
16	Beania challengeri	B. challengeri		Moyano G, Hugo I
17	Beania erecta	B. erecta		Moyano G, Hugo I
18	Beania magellanica	B. magellanica		Moyano G, Hugo I
19	Bostrychopora dentata	B. dentata		Moyano G, Hugo I
20	Caberea darwini	C. darwini		Moyano G, Hugo I
21	Carbasea curva	C. curva		Moyano G, Hugo I
22	Carbasea ovoidea	C. ovoidea		Moyano G, Hugo I
23	Camptoplites giganteus	C. giganteus		Moyano G, Hugo I
24	Camptoplites tricornis	C. tricornis		Moyano G, Hugo I
25	Cellaria incula	C. incula		Moyano G, Hugo I
26	Cellaria malvinensis	C. malvinensis		Moyano G, Hugo I
27	Cellaria tenuis	C. tenuis		Moyano G, Hugo I
28	Cellaria variabilis	C. variabilis		Moyano G, Hugo I	?
29	Cellarinella sp.	Cellarinella sp.		Moyano G, Hugo I
30	Cellarinella watersi	C. watersi		Moyano G, Hugo I
31	Chaperiopsis sp.	Chaperiopsis sp.		Moyano G, Hugo I
32	Chartella notialis	C. notialis		Moyano G, Hugo I
33	Cornucopina polymorpha	C. polymorpha		Moyano G, Hugo I
34	Cornucopina sp.	Cornucopina sp.		Moyano G, Hugo I
35	Crisidia delicatissima	C. delicatissima		Moyano G, Hugo I
36	Dakariella concinna	D. concinna		Moyano G, Hugo I
37	Disporella octoradiata	D. octoradiata		Moyano G, Hugo I
38	Escharella sp.	Escharella sp.		Moyano G, Hugo I
39	Exochella sp.	Exochella sp.		Moyano G, Hugo I
40	Fenestrulina rugula	F. rugula		Moyano G, Hugo I
41	Flustrapora magellanica	F. magellanica		Moyano G, Hugo I
42	Foveolaria terrifica	F. terrifica		Moyano G, Hugo I
43	Himantozoum antarcticumx	H. antarcticumx		Moyano G, Hugo I
44	Homera sp.	Homera sp.		Moyano G, Hugo I
45	Hippothoa flagellum	H. flagellum		Moyano G, Hugo I
46	Ichthyaria oculata	I. oculata		Moyano G, Hugo I
47	Isoschizoporella secunda	I. secunda		Moyano G, Hugo I
48	Melicerita blancoae	M. blancoae		Moyano G, Hugo I
49	Melicerita obliqua	M. obliqua		Moyano G, Hugo I
50	Menipea sp.	Menipea sp.		Moyano G, Hugo I
51	Micropora brevisima	M. brevisima		Moyano G, Hugo I
52	Microporella hyadesi	M. hyadesi		Moyano G, Hugo I
53	Nematoflustra flagellata	N. flagellata		Moyano G, Hugo I
54	Nevianipora sp.	Nevianipora sp.		Moyano G, Hugo I
55	Notoplites drygalskii	N. drygalskii		Moyano G, Hugo I
56	Notoplites sp.	Notoplites sp.		Moyano G, Hugo I
57	Ogivalia elegans	O. elegans		Moyano G, Hugo I
58	Orthoporidroides erectus	O. erectus		Moyano G, Hugo I
59	Osthimosia bicomis	O. bicomis		Moyano G, Hugo I
60	Osthimosia sp.	Osthimosia sp.		Moyano G, Hugo I	sp. 1
61	Osthimosia sp.	Osthimosia sp.		Moyano G, Hugo I	sp. 2
62	Paracellaria cellarioides	P. cellarioides		Moyano G, Hugo I
63	Parafigularia sp.	Parafigularia sp.		Moyano G, Hugo I	sp. n.
64	Platychelina planulata	P. planulata		Moyano G, Hugo I
65	Reteporella erugata	R. erugata		Moyano G, Hugo I
66	Reteporella frigida	R. frigida		Moyano G, Hugo I
67	Reteporella hippocrepis	R. hippocrepis		Moyano G, Hugo I
68	Reteporella magellensis	R. magellensis		Moyano G, Hugo I
69	Schizoporella sp.	Schizoporella sp.		Moyano G, Hugo I	?
70	Securiflustra bifoliata	s. bifoliata		Moyano G, Hugo I
71	Smittina antarctica	S. antarctica		Moyano G, Hugo I
72	Smittina monacha	S. monacha		Moyano G, Hugo I	?
73	Smittina sp.	Smittina sp.		Moyano G, Hugo I	sp. n.
74	Smittinella sp.	Smittinella sp.		Moyano G, Hugo I
75	Smittoidea pugiuncula	S. pugiuncula		Moyano G, Hugo I
76	Smittoidea conspicua	s. conspicua		Moyano G, Hugo I
77	Systenopora contractu	S. contractu		Moyano G, Hugo I
78	Talivittaticella frigida	T. frigida		Moyano G, Hugo I
79	Toretocheilum turbinatum	T. turbinatum		Moyano G, Hugo I
80	Tricelktria sp.	Tricelktria sp.		Moyano G, Hugo I
81	Trilochites biformatus	T. biformatus		Moyano G, Hugo I
82	Trilochites phylactelloides	T. phylactelloides		Moyano G, Hugo I
83	Flustridae sp.	Flustridae sp.		Moyano G, Hugo I	n. gen. n. sp.

License:

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

Size:

188 data points

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