TABLE
2.4. Fatty acids as biochemical markers of trophic relationships
in freshwater ecosystems.
Lower trophic level
Bacterioplankton
Symbiotic cyanobacteria
Symbiotic bacteria
Intestinal bacteria
Diatoms
Periphytic diatoms
Periphytic green algae
Heterozostera tasmanica
(seagrass)
Angiosperm detritus
Aquatic
insects
Freshwater fish
Freshwater fish
Upper trophic level
Cryptomonas ovata,
C. marsonii
Azalia caroliniana
(aquatic fern)
Castor canadensis
(beaver)
Fundulus heteroclitus
(Cyprinodont)
Aquatic insects (Diptera
and
Trichoptera)
Stoneroller minnows (Campostoma
anomalum)
Stoneroller minnows (Campostoma
anomalum)
Zooplankton (isopodes) and sea garfish
(Hyporhamphus melanochir)
Macrobrachioum boore/Ii
(decapod)
Atlantic salmon (Salmo salar)
Harbour seal (Phoca vitulilla),
ringed
seal (Phoca hispida)
River dolphin (/nia geoffrensis)
Fatty acid marker
15:0, 17:0, isoI7:0, anteisol7:0
12: 1, 14: 1<05
.:l1l-transI8:1, cis-9, trans-1l-18:2
Cyc1opropanoid 17:0, 19:0
20:5<03
20:5<03
18:3<03
18:1<09, 18:2<06, 18:3<03, 16:3<03,
.:l3-trans-16: 1
18:1<09, 18:2<06
20:4<06
18:2<06, 18:3<03, 20:4<06
18:2<06
Reference
Rieman,
1985; Desvilettes et ai., 1994
Caudales et ai., 1992
Kakelii et ai., 1996
Cosper et aI., 1984
Hanson et ai., 1985
Napolitano et ai., 1996
Napolitano et ai., 1996
Nichols et ai., 1986
Gonzalez-Baro et ai., 1988
Ackman and Takeuchi, 1986; Bell et ai.,
1994
Smith et ai., 1996; Kakelii et aI., 1993,
1995
Ackman et ai., 1971