Food Webs


Below are the four food webs constructed during the project. Each rectangle represents a single species (or in the case of the largest black rectangle, a species complex of generalist Scotorythra that were indistinguishable as early-instar larvae). Black species are native to Kaua`i, blue species were intentionally introduced, and red species were believed to be adventive (unintentionally introduced). The width of each horizontal bar represents the relative proportion of that particular species within that trophic level. In generalist species, the width of the arrow connecting to the species in a lower trophic level indicates the relative proportion of that host in the species’ diet.

Click for a larger image with plant and parasitoid species names. The numerical codes for the moth species are available here.

A multivariate analysis on these webs showed no statistical differences, i.e. the data were consistent over space and time.

 

Food Web for Alakai Swamp plot 1, 1999

1999, Plot 1

Food Web for Alakai Swamp plot 2, 1999

1999, Plot 2

 

Food Web for Alakai Swamp plot 1, 2000

2000, Plot 1

Food Web for Alakai Swamp plot 2, 2000

2000, Plot 2