Fig 1.
Seasonal dynamics of different phytoplankton and zooplankton groups (g WW m-3) in Lake Võrtsjärv during February 2010 to February 2011.
(a) Total BM—total phytoplankton biomass; Cyano—cyanobacteria; Bac—diatoms. (b) Chloro—chlorophytes (green algae); Crypto—cryptophytes; Col Cy—colonial cyanobacteria. (c) seasonal dynamics of phytoplankton edible for zooplankton (ed—edible). (d) To–Thermocyclops oithonoides;Ml–Mesocyclops leuckarti; Ck–Cyclops kolensis; T+M—Thermoc.+ Mesoc. copepodites; Cs–Chydorus sphaericus; B–Bosmina spp.; Dc–Daphnia cucullata; OC—Other Cladocerans; N—Nauplii; R—Rotifers. WW—wet weight.
Table 1.
Correlations between investigated water column pigments and phytoplankton groups in Lake Võrtsjärv (02.2010–02.2011).
Fig 2.
Seasonal dynamics of phytoplankton pigments (μg l-1) in Lake Võrtsjärv water column during February 2010 to February 2011.
(a) Chl a–chlorophyll a; Zea—zeaxanthin. (b) Fuco—fucoxanthin; Diadino—diadinoxanthin. (c) Cantha—canthaxanthin; Diato—diatoxanthin. (d) Chl b–chlorophyll b; Lut—lutein; Allo—alloxanthin.
Fig 3.
Percentage contribution of phytoplankton pigments in cyclopoid copepods’ guts.
(a) Cyclops kolensis. (b) Mesocyclops leuckarti. (c) Thermocyclops oithonoides. Abbreviations of phytoplankton pigments as in Fig 2.
Table 2.
Results of t-tests between proportions of the investigated phytoplankton pigments in phytoplanton (PP) and most abundant cyclopoid species (Cyclops kolensis and Mesocyclops leuckarti) in Lake Võrtsjärv (02.2010–02.2011).
Table 3.
Chesson’s selectivity index 〈 of investigated zooplankton (ZP) species for phytoplankton pigments within the period from 02. 2010 to 02. 2011 in Lake Võrtsjärv.
Fig 4.
Percentage contribution of phytoplankton pigments in cladoceran guts.
(a) Daphnia cucullata. (b) Bosmina spp. (c) Chydorus sphaericus. Abbreviations of phytoplankton pigments as in Fig 2.