Citation:

PANGAEA.884342

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Related to:

Cordeiro, T A; Montú, M (1991): Distribuição dos Siphonophorae: Calycophorae (CNIDARIA) em relação às massas de água ao largo dos estados do Paraná e de Santa Catarina, Brasil (28°S - 31°S). Nerítica, 6(1-2), 107-126

Hubold, Gerd (1980): Hidrography and plankton off Southern Brazil and Rio de La Plata, August-November 1977. Atlântica, 4, 1-22

Hubold, Gerd (1980): Second report on hidrography and plankton off Southern Brazil and Rio de La Plata, Autumn Cruise: April-June 1978. Atlântica, 4, 23-42

Hubold, Gerd (1982): Eggs and larvae of Engraulis anchoita Hubbs And Marini, 1935 in the Southwest Atlantic between 25°S and 40°S. Meeresforschung, 29, 208-218, https://doi.org/10.2312/meeresforschung_29_208-218

Hubold, Gerd; Ehrlich, M D (1981): Distribution of eggs and larvae of five Clupeoid fish species in the Southwest Atlantic between 25°S And 40°S. Meeresforschung, 29, 17-29, https://doi.org/10.2312/meeresforschung_29_17-29

Coverage:

Median Latitude: -33.760670 * Median Longitude: -50.894804 * South-bound Latitude: -40.450000 * West-bound Longitude: -57.390000 * North-bound Latitude: -28.000000 * East-bound Longitude: -44.900000

Date/Time Start: 1978-04-08T00:00:00 * Date/Time End: 1978-06-27T00:00:00

Minimum DEPTH, water: 10 m * Maximum DEPTH, water: 320 m

Event(s):

Conversut_2_4771 (22_4771) * Latitude: -38.180000 * Longitude: -57.390000 * Date/Time: 1978-04-08T00:00:00 * Elevation: -31.0 m * Campaign: * Basis: Almirante Saldanha * Method/Device: Hensen net (HNET)

Conversut_2_4772 (22_4772) * Latitude: -38.280000 * Longitude: -57.230000 * Date/Time: 1978-04-08T00:00:00 * Elevation: -50.0 m * Campaign: * Basis: Almirante Saldanha * Method/Device: Hensen net (HNET)

Conversut_2_4773 (22_4773) * Latitude: -38.570000 * Longitude: -56.630000 * Date/Time: 1978-04-08T00:00:00 * Elevation: -77.0 m * Campaign: * Basis: Almirante Saldanha * Method/Device: Hensen net (HNET)

Comment:

The Convergência Subtropical (CONVERSUT) cruise series was conducted by the Departamento de Hidrografia e Navegação (DHN) from the Brazilian Navy on board the Oceanographic Ship (NOc.) Almirante Saldanha. The project objective was to determine the western boundary of the South Atlantic Subtropical Convergence in different times of the year (Hubold, 1980a, 1980b, Cordeiro & Montu, 1991). The first cruise of the series (CONVERSUT_1) was carried out between August and November 1977, between Ilha do Mel (25°S) and Mar del Plata (Argentina, 40°S), resulting in 24 transects perpendicular to the coast and 200 oceanographic stations spaced about 30 nautical miles (~ 55 km) apart. Sampling ranged from the coastal region to the oceanic region, approximately 300 nautical miles away from the coast (Hubold, 1980a). Samples from the second cruise (CONVERSUT_2) were conducted between southern Santa Catarina Island (28°S) and southern region of Mar del Plata (Argentina, 48°30'S) from April to June 1978. Twenty-one transects were performed resulting in 180 oceanographic stations, covering an area that stretched up to 250 nautical miles (463 km) toward the ocean (Hubold, 1980b). The 153 stations on the third cruise of the series (CONVERSUT_3) were the result of 24 transects between Ilha do Mel (25°S) and Mar del Plata (Argentina, 40°S) during the period between January and April 1981 (Cordeiro & Montu, 1991).

Two sampling strategies were employed in the first two cruises, oblique and vertical trawls at each station, while in the third cruise only oblique trawls were performed. A conical plankton net (Hensen type) with 0.80 m of mouth diameter, 2.6 m of total length and 250 µm of mesh was used (Hubold, 1980a; Cordeiro & Montu, 1991). For technical reasons, in the second cruise, a Hensen-type network with 0.60 m diameter was used in the oblique trawls (Hubold, 1980b; Hubold, 1982). The oblique and vertical trawls were driven from 200 m depth to the surface, or from within 1-5 m from the bottom in shallow areas. The average velocity during the descent of the net in oblique trawls was 0.5 ms-1, reaching 2 ms-1 on the rise, while in vertical trawls velocity was 1 ms-1 (Hubold, 1982). Flowmeters were coupled in all nets to determine the volume of filtered water in each trawl. Samples were fixed and preserved in buffered formaldehyde solution diluted in sea water with a final approximate concentration of 4% (Hubold & Ehrlich, 1981). The filtered volume was calculated and used to standardize the abundance of fish eggs and larvae per 100 m3 of filtered water.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event		Muelbert, Jose H
2	Date/Time of event	Date/Time		Muelbert, Jose H
3	Latitude of event	Latitude		Muelbert, Jose H
4	Longitude of event	Longitude		Muelbert, Jose H
5	Depth, bathymetric	Bathy depth	m	Muelbert, Jose H
6	Distance	Distance	km	Muelbert, Jose H	from shore
7	Temperature, water	Temp	°C	Muelbert, Jose H	at surface
8	Salinity	Sal		Muelbert, Jose H	at surface, PSU
9	Volume	Vol	m³	Muelbert, Jose H	filtered
10	Zooplankton, biovolume	Zooplankton biovol	µm³/ml	Muelbert, Jose H
11	Fish eggs	Fish eggs	#	Muelbert, Jose H
12	Fish larvae	Fish larv	#	Muelbert, Jose H
13	Fish eggs	Fish eggs	#/m³	Muelbert, Jose H	abundance at station
14	Fish larvae	Fish larv	#/m³	Muelbert, Jose H	abundance at station
15	Order	Order		Muelbert, Jose H
16	Family	Family		Muelbert, Jose H
17	Species	Species		Muelbert, Jose H
18	Number of species	Spec No	#	Muelbert, Jose H	of fish eggs
19	Number of species	Spec No	#	Muelbert, Jose H	of fish larvae
20	Fish eggs	Fish eggs	#/m³	Muelbert, Jose H	per species or taxon
21	Fish larvae	Fish larv	#/m³	Muelbert, Jose H	per species or taxon
22	Flag	Flag		Muelbert, Jose H	1 = beginning of new station, 0 = same station as above
23	Method comment	Method comm		Muelbert, Jose H	haul type: VT = total vertical, OB = oblique trawl
24	DEPTH, water	Depth water	m	Muelbert, Jose H	Geocode – haul depth, = the actual depth of the haul (vertical, oblique or horizontal haul), OR the depth range in case of stratified hauls. E.g. the net went down to 250m and it was hauled to 100m depth, so haul depth is 150m (250-100)
25	Method comment	Method comm		Muelbert, Jose H	station type: PKT = plankton trawl station
26	Transect	Transect		Muelbert, Jose H
27	Device type	Device		Muelbert, Jose H	net

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

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10032 data points

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