Findings of research at Tumbi Wetlands

Date	Survey description	Description	Transect 1	Transect 2
30-10-2007	Preliminary survey before Crofton weed was removed	Total number of webs	25	14
		Number of web types	7	4
		Average number of webs	19.5
		Average number of web types	5.5
10-04-2008	Crofton weed was removed and replanting of transplanted tube stock commenced	Total number of webs	31	11
		Number of web types	6	5
		Average number of webs	21
		Average number of web types	5.5
17-10-2008	6 months after replanting of transplanted tube stock completed	Total number of webs	41	28
		Number of web types	8	6
		Average number of webs	34.5
		Average number of web types	7
10-04-2009	12 months after replanting of transplanted tube stock completed	Total number of webs	38	37
		Number of web types	7	11
		Average number of webs	37.5
		Average number of web types	9

No more surveys were made after October 2009 as the plant growth in the transect area is making parts inaccessible.

Look at the average numbers of both webs and web types;
From the graph you can see the average number of webs has increased markedly
but the average number of web types has not changed as much.
These results are consistent with the proposition that biodiversity increases as the plant community grows, after the removal of the Crofton weed.

Updated on ... April 10, 2009