3.
The distribution and abundance of species in Darwin Harbour mangroves was found to vary in time (between years and seasons) and space (between mangrove assemblages). High consistency was observed from site to site, however, with a reasonably predictable suite of species occurring at particular tidal elevations.
4.
The microhabitats from which worms were sampled and the species composition of landward assemblages differed markedly from the seaward assemblages.
5.
The seasonal pattern of increased dry season diversity and abundance to seaward is reversed to landward, where it declined in response to desiccation.
6.
A different species and trophic composition between disturbed and undisturbed mangroves is also suggested by the data.
7.
Herbivores are the most abundant trophic group overall, but in disturbed habitats surface deposit feeders are relatively more common.