Brown trout (Salmo trutta) removal by rotenone alters zooplankton and phytoplankton community composition in a shallow mesotrophic reservoir

Figures & data

Table 1 Zooplankton taxa observed in the Upper Karori Reservoir (22 November 2010 to 23 April 2012).

Cladocera:
Alona sp.	Daphnia galeata
Bosmina meridionalis	Graptoleberis testudinaria
Ceriodaphnia dubia	Ilyocryptus sordidus
Chydorus sp.	Leydigia australis
Copepoda:
Acanthocyclops robustus	Boeckella minuta
Copepod nauplii
Rotifera:
Ascomorphella volvocicola	Polyarthra dolichoptera
Asplanchna brightwelli	Pompholyx complanata
Bdelloids	Synchaeta oblonga
Brachionus calyciflorus	Synchaeta pectinata
Filinia longiseta	Testudinella patina
Filinia novaezealandiae	Trichocerca brachyura
Filinia terminalis	Trichocerca pusilla
Keratella cochlearis	Trichocerca similis
Keratella procurva	Trichocerca teniour
Lecane lunaris	Tripleuchlanis plicata
Ostracods (unidentified)

Figure 1 Seasonal dynamics of total crustacean and total rotifer abundances in Upper Karori Reservoir. The vertical dashed lines indicate timings of, left to right, trout removal and estimated entry of galaxiid larvae into the reservoir.

Figure 2 Multidimensional scaling plots representing changes in zooplankton species composition in Upper Karori Reservoir. A, Sample dates are superimposed with symbols indicating dates before and after trout removal; B, the likely timing of galaxiid entry.

Figure 3 Multidimensional scaling plots representing changes in phytoplankton species composition in Upper Karori Reservoir. A, Sample dates are superimposed with symbols indicating dates before and after trout removal; B, the likely timing of galaxiid entry.

Table 2 Phytoplankton taxa observed in the Upper Karori Reservoir (9 November 2010 to 23 April 2012).

Bacillariophyceae:	Navicula sp.
Aulacoseira sp.	Nitzschia sp.
Asterionella sp.	Melosira sp.
Epithemia sp.	Rhoicospheria sp.
Fragilaria sp.	Synedra sp.
Chlorophyta:	Oocystis sp.
Closterium sp.	Unknown single cell Chlorophyta
Eudorina sp.	Volvox sp.
Oedogonium sp.	Staurastrum sp.
Euglenophyta:	Trachelomonas sp.
Cryptophyta:	Cryptomonas sp.
Chrysophyta:	Mallonmonas akrokomos
Cyanobacteria:	Anabaena planktonica
Anabaena circinalis	Pseudanabaena sp.
Dinoflagellates:	Rhodomonas sp.