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Table 1 Experimental design. Shown are the number of replicates, experimental duration, and the number of introduced individuals, and measurement timing of prey items in the experiments I and II

From: Habitat modification by invasive crayfish can facilitate its growth through enhanced food accessibility

Experiment I

Number of replicates

Number of crayfish

0

1

2

4

w/

macrophytes

2

4

4

4

w/o

macrophytes

–

2

2

2

Duration

91 days

Dragonfly larvae

Introducing 34 individuals at the beginning and counting survivors on the 21th day

Chironomid larvae

Introducing 30 individuals at the beginning and once a week and counting survivors at the end

Experiment II

Number of replicates

Artificial macrophyte density

No

Medium

High

w/ crayfish and dragonflies

4

4

4

w/o crayfish

w/ dragonflies

4

–

–

w/ crayfish

w/o dragonflies

4

–

–

Duration

28 days

Dragonfly larvae

Introducing 50 individuals at first and then 20 individuals once a week and counting survivors twice a week

Chironomid larvae

Introducing 30 individuals at the beginning and once a week and counting survivors at the end