Help with correct model formula for a repeated measures design

Hi there,
I will really appreciate some help denoting the proper formula to fit a GLM for the following repeated measures data:
I investigated temporal changes in abundance in four different taxa (TAXA: Fixed effect) from two different sites (SITES: Fixed effect) across the region. Six random transects (replicates) in each site were surveyed periodically for seven months (TIME: random within transect effect) and thus a partly nested design was employed.

The design is unbalanced. I have come up with the following formula:
Variable ~ Site + Taxa + (1|Time/Replicate)
is this correct?