Frangoulis, Constantin; Christou, Epaminondas (2015): Faecal pellet production of copepoda collected in water depth up to 100 meters in the eastern Mediterranean Sea in March and April 2008 during SES_GR1 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.853573
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Abstract:
The SES_UNLUATA_GR1-Mesozooplankton faecal pellet production rates dataset is based on samples taken during March and April 2008 in the Northern Libyan Sea, Southern Aegean Sea and in the North-Eastern Aegean Sea. Mesozooplankton is collected by vertical tows within the 0-100 m layer or within the Black sea water body mass layer in the case of the NE Aegean, using a WP-2 200 µm net equipped with a large non-filtering cod-end (10 l). Macrozooplankton organisms are removed using a 2000 µm net. A few unsorted animals (approximately 100) are placed inside several glass beaker of 250 ml filled with GF/F or 0.2 µm Nucleopore filtered seawater and with a 100 µm net placed 1 cm above the beaker bottom. Beakers are then placed in an incubator at natural light and maintaining the in situ temperature. After 1 hour pellets are separated from animals and placed in separated flasks and preserved with formalin. Pellets and are counted and measured using an inverted microscope. Animals are scanned and counted using an image analysis system.
Carbon- Specific faecal pellet production is calculated from a) faecal pellet production, b) individual carbon: Animals are scanned and their body area is measured using an image analysis system. Body volume is then calculated as an ellipsoid using the major and minor axis of an ellipse of same area as the body. Individual carbon is calculated from a carbon- total body volume of organisms (relationship obtained for the Mediterranean Sea by Alcaraz et al. (2003) divided by the total number of individuals scanned and c) faecal pellet carbon: Faecal pellet length and width is measured using an inverted microscope. Faecal pellet volume is calculated from length and width assuming cylindrical shape. Conversion of faecal pellet volume to carbon is done using values obtained in the Mediterranean from: a) faecal pellet density 1,29 g cm**3 (or pg µm**3) from Komar et al. (1981); b) faecal pellet DW/WW=0,23 from Elder and Fowler (1977) and c) faecal pellet C%DW=25,5 Marty et al. (1994).
Further details:
Alcaraz, Miguel; Saiz, Enric; Calbet, Albert; Broglio, Elisabetta (2003): Estimating zooplankton biomass through image analysis. Marine Biology, 143(2), 307-315, https://doi.org/10.1007/s00227-003-1094-8
Fowler, Scott W (1977): Trace elements in zooplankton particulate products. Nature, 269(5623), 51-53, https://doi.org/10.1038/269051a0
Komar, Paul D; Morse, Alan P; Small, Lawrence F; Fowler, Scott W (1981): An analysis of sinking rates of natural copepod and euphausiid fecal pellets. Limnology and Oceanography, 26(1), 172-180, https://doi.org/10.4319/lo.1981.26.1.0172
Marty, Jean-Claude; Nicolas, E; Miquel, Juan Carlos; Fowler, Scott W (1994): Particulate fluxes of organic compounds and their relationship to zooplankton fecal pellets in the northwestern Mediterranean Sea. Marine Chemistry, 46(4), 387-405, https://doi.org/10.1016/0304-4203(94)90034-5
Project(s):
Funding:
Sixth Framework Programme (FP6), grant/award no. 36949: Southern European Seas: Assessing and Modelling Ecosystem Changes
Coverage:
Median Latitude: 36.968110 * Median Longitude: 25.502000 * South-bound Latitude: 34.563500 * West-bound Longitude: 25.238830 * North-bound Latitude: 40.267330 * East-bound Longitude: 25.999170
Date/Time Start: 2008-03-30T09:55:00 * Date/Time End: 2008-04-04T10:20:00
Minimum DEPTH, water: 50 m * Maximum DEPTH, water: 50 m
Event(s):
SES_GR1-0A01c_WP4 (0A01c) * Latitude: 40.267330 * Longitude: 25.238830 * Date/Time: 2008-04-04T10:20:00 * Location: Mediterranean Sea * Campaign: SES_GR1 * Basis: Aegaeo * Method/Device: WP-2 towed closing plankton net (WP2) * Comment: The net was checked after every tow for any damage. All nets closed properly.
SES_GR1-0A10c_WP3 (0A10c) * Latitude: 36.073500 * Longitude: 25.268000 * Date/Time: 2008-04-02T10:25:00 * Location: Mediterranean Sea * Campaign: SES_GR1 * Basis: Aegaeo * Method/Device: WP-2 towed closing plankton net (WP2) * Comment: The net was checked after every tow for any damage. All nets closed properly.
SES_GR1-000L2a_WP2 (000L2a) * Latitude: 34.563500 * Longitude: 25.999170 * Date/Time: 2008-03-30T09:55:00 * Location: Mediterranean Sea * Campaign: SES_GR1 * Basis: Aegaeo * Method/Device: WP-2 towed closing plankton net (WP2) * Comment: The net was checked after every tow for any damage. All nets closed properly.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Frangoulis, Constantin | |||
| 2 | Optional event label | Event 2 | Frangoulis, Constantin | |||
| 3 | Date/Time of event | Date/Time | Frangoulis, Constantin | |||
| 4 | Latitude of event | Latitude | Frangoulis, Constantin | |||
| 5 | Longitude of event | Longitude | Frangoulis, Constantin | |||
| 6 | Depth, top/min | Depth top | m | Frangoulis, Constantin | ||
| 7 | Depth, bottom/max | Depth bot | m | Frangoulis, Constantin | ||
| 8 | DEPTH, water | Depth water | m | Frangoulis, Constantin | Geocode | |
| 9 | Fecal pellet production rate per individual | Fecal pel pro/ind | #/#/h | Frangoulis, Constantin | Measured/Determined | of copepoda |
| 10 | Fecal pellet production as carbon | Fecal pel pro C | mg/g/h | Frangoulis, Constantin | Computed/Converted | of copepoda |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12 data points