Dear all,

I would like to propose two new standard names for marine ecosystem components. 

(1)  mass_concentration_of_diazotrophs_expressed_as_carbon_in_sea_water
(2)  mass_concentration_of_zooplankton_expressed_as_carbon_in_sea_water

I both cases a standard name already exists, but expressed as 
„mole_concentration“ rather than „mass_concentration“. However for other 
ecosystem components like diatoms and flagellates a standard name 
mass_concentration_of_*_expressed_as_carbon_in_sea_water already exists. Hence 
I would like to suggest corresponding standard names in mass concentration for 
diazotrophs and zooplankton.   

Full standard name definition:
mass_concentration_of_diazotrophs_expressed_as_carbon_in_sea_water

'Mass concentration' means mass per unit volume and is used in the construction 
mass_concentration_of_X_in_Y, where X is a material constituent of Y. A 
chemical or biological species denoted by X may be described by a single term 
such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'.The phrase 
'expressed_as' is used in the construction A_expressed_as_B, where B is a 
chemical constituent of A. It means that the quantity indicated by the standard 
name is calculated solely with respect to the B contained in A, neglecting all 
other chemical constituents of A. In ocean modelling, diazotrophs are 
phytoplankton of the phylum cyanobacteria distinct from other phytoplankton 
groups in their ability to fix nitrogen gas in addition to nitrate and 
ammonium. Phytoplankton are autotrophic prokaryotic or eukaryotic organisms 
that live near the water surface where there is sufficient light to support 
photosynthesis.

mass_concentration_of_zooplankton_expressed_as_carbon_in_sea_water

'Mass concentration' means mass per unit volume and is used in the construction 
mass_concentration_of_X_in_Y, where X is a material constituent of Y. A 
chemical or biological species denoted by X may be described by a single term 
such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'.The phrase 
'expressed_as' is used in the construction A_expressed_as_B, where B is a 
chemical constituent of A. It means that the quantity indicated by the standard 
name is calculated solely with respect to the B contained in A, neglecting all 
other chemical constituents of A. Standard names also exist for the mole 
concentration of a number of components that make up the total zooplankton 
population, such as mesozooplankton, microzooplankton andmiscellaneous 
zooplankton.

Regards,
Ute


~~~~~~~~~~~~~~~~~~~~~~
Dr Ute Daewel
Helmholtz-Zentrum Geesthacht
Zentrum für Material- und Küstenforschung GmbH
Max-Planck-Str. 1
D-21502 Geesthacht
www.hzg.de
Tel.:++49-4152 87-2821

Helmholtz-Zentrum Geesthacht 
Zentrum für Material- und Küstenforschung GmbH 
Max-Planck-Straße 1 I 21502 Geesthacht I Deutschland/Germany 

Geschäftsführer/Board of Management: Prof. Dr. Wolfgang Kaysser, Dipl.-Ing. 
Michael Ganß 
Vorsitzender des Aufsichtsrates/Chairman of the Supervisory Board: 
Ministerialdirigent Dr. Herbert Zeisel 
Amtsgericht Lübeck HRB 285 GE (Register Court) 
Internet: http://www.hzg.de
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