Citation:

j.dsr.2013.01.011

Name: (Table 1) 100 m integrated temperature, chlorophyll a content and protist biomass during Leg 7 of Galathea 3 cruise (2006)
Creator: Sigrún Huld Jónasdóttir
Published: 2013
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

We present a study on the protozooplankton >5 µm and copepods larger than 50 µm at a series of contrasting stations across the Southern Indian Ocean (SIO). Numerically, over 80% of the copepod community across the transect was less than 650 µm in size, dominated by nauplii, and smaller copepods, while 80% of the biomass (as mg C/m**3) was larger than 1300 µm in body length. Predation by the carnivorous copepod Corycaeus sp. was estimated to be able to remove up to 2% /d of the copepods <1000 µm in size. By the help of grazing models we estimated that primary producers were mainly grazed upon by ciliates and heterotrophic dinoflagellates (40-80% /d combined) in temperate waters but appendicularians became increasingly important in the tropical waters grazing about 40% of the biomass per day. Despite their high abundance and biomass, copepods contributed less than 20% of the grazing at most stations. Secondary production was low (carbon specific egg production <0.14 /d) but typical for food limited oligotrophic oceans.

Project(s):

International Polar Year (2007-2008) (IPY)

Coverage:

Median Latitude: -31.501333 * Median Longitude: 79.069119 * South-bound Latitude: -39.559830 * West-bound Longitude: 31.714000 * North-bound Latitude: -19.746000 * East-bound Longitude: 114.857170

Date/Time Start: 2006-10-21T00:00:00 * Date/Time End: 2006-11-04T00:00:00

Event(s):

Galathea_3/7-1 * Latitude: -38.482670 * Longitude: 31.714000 * Date/Time: 2006-10-21T00:00:00 * Location: Indian Ocean * Campaign: * Basis: HDMS Vaedderen * Method/Device: Multiple investigations (MULT)

Galathea_3/7-8 * Latitude: -39.559830 * Longitude: 42.743830 * Date/Time: 2006-10-23T00:00:00 * Location: Indian Ocean * Campaign: * Basis: HDMS Vaedderen * Method/Device: Multiple investigations (MULT)

Galathea_3/7-15 * Latitude: -37.260330 * Longitude: 72.506330 * Date/Time: 2006-10-27T00:00:00 * Location: Indian Ocean * Campaign: * Basis: HDMS Vaedderen * Method/Device: Multiple investigations (MULT)

Comment:

Heterotrophic protists include ciliates >5 µm and copepods. 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	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	DATE/TIME	Date/Time			Geocode
5	Depth, top/min	Depth top	m	Jónasdóttir, Sigrún Huld
6	Depth, bottom/max	Depth bot	m	Jónasdóttir, Sigrún Huld
7	Temperature, water	Temp	°C	Jónasdóttir, Sigrún Huld
8	Temperature, water, standard deviation	Temp std dev	±	Jónasdóttir, Sigrún Huld
9	Chlorophyll a, areal concentration	Chl a conc	mg/m²	Jónasdóttir, Sigrún Huld
10	Chlorophyll a, standard deviation	Chl a std dev	±	Jónasdóttir, Sigrún Huld
11	Protista, biomass as carbon	Protista C	mg/m²	Jónasdóttir, Sigrún Huld	autotroph
12	Standard deviation	Std dev	±	Jónasdóttir, Sigrún Huld	autotrophic protist biomass
13	Protista, biomass as carbon	Protista C	mg/m²	Jónasdóttir, Sigrún Huld	heterotroph
14	Standard deviation	Std dev	±	Jónasdóttir, Sigrún Huld	heterotrophic protist biomass
15	Copepoda, biomass as carbon, integrated	Copepoda C	mg/m²	Jónasdóttir, Sigrún Huld

License:

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

Size:

77 data points

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