89
increase the value of the sedimentary pigment record as a tool in paleoceanography (Leavitt
and Brown, 1988; Ziillig, 1989). Organic geochemical, as well as taxonomic and food web
o
10
20
30
retention time (min.)
Figure 15. Appearance of a fucoxanthin derivative during copepod grazing.
studies, may further benefit from the analysis of the composition of other compounds, such
as sterols and fatty acids (Nichols et al., 1987), which may be more taxon- specific than
pigments.
Absorption of light by detrital pigments
Models rooted in physiology to obtain vertical profiles of primary production normally make
use of empirical relationships between photosynthesis, quantum yield, and photosynthetically
Précédent

- 98/415

Suivant