Ecological Archives E088-040-A1

**Ross M. Thompson, Martin Hemberg, Brian M. Starzomski, and Jonathan B. Shurin. 2007. Trophic levels and trophic tangles: the prevalence of omnivory in real food webs. Ecology 88:612–617.**

Appendix A. Food webs included in the analysis.

TABLE A1. Food webs included in the analysis. Ecosystem type, location, web size (number of taxa; S), number of basal taxa and sources for the webs are shown.

Site	Ecosystem	Location	Total S	Basal S	Source
Aire Stream	stream	Great Britain	60	7	1
Akatore Creek A	stream	New Zealand	85	44	2
Akatore Creek B	stream	New Zealand	58	30	2
Berwick	stream	New Zealand	79	37	2
Blackrock Stream	stream	New Zealand	87	50	2
Broad Stream	stream	New Zealand	95	54	2
Broadstone Stream	stream	Great Britain	25	4	3
Canton Stream	stream	New Zealand	109	57	2
Coweeta Stream 1	stream	USA	58	28	4
Coweeta Stream 17	stream	USA	71	38	4
Crocodile Creek	stream	Malawi	33	5	1
Deep Creek	stream	USA	32	17	1
Dempsters Creek	stream	New Zealand	107	50	2
Duffin Creek	stream	Canada	45	32	5
German Creek	stream	New Zealand	86	50	2
Healy Creek	stream	New Zealand	96	47	2
Kye Burn	stream	New Zealand	98	58	2
Lerderberg River	stream	Australia	45	9	6
Little Kye Burn	stream	New Zealand	78	42	2
Martins Stream	stream	USA	105	48	4
Mimihau Stream	stream	New Zealand	69	33	2
Narrowdale Stream	stream	New Zealand	71	28	2
North Col Stream	stream	New Zealand	78	25	2
Powder Creek	stream	New Zealand	78	32	2
Stony Creek	stream	New Zealand	113	64	2
Sutton Stream	stream	New Zealand	91	69	2
Troy Stream	stream	USA	78	41	4
Wisp Creek	stream	New Zealand	49	15	2
Lake Malawi	lake	Malawi	33	5	1
Lake Nyasa 1	lake	Malawi	31	3	1
Lake Nyasa 2	lake	Malawi	37	5	1
Little Rock Lake	lake	USA	200	82	9
Ovre Heimdalsvatn	lake	Denmark	27	9	1
Skipwith Pond	lake	Great Britain	37	3	10
Broom	terrestrial	Great Britain	154	1	11
Coachella desert	terrestrial	USA	30	3	12
Dung arthropod	terrestrial	Mexico	46	19	13
El Verde rainforest	terrestrial	Mexico	156	28	14
Oak gall	terrestrial	Great Britain	62	1	1
Oak log	terrestrial	USA	47	2	1
Pine log	terrestrial	USA	36	1	1
St Martins Island	terrestrial	Caribbean	44	6	16
Saltmeadow	terrestrial	New Zealand	45	7	1
Sandy beach	terrestrial	Peru	46	7	1
Shortgrass prairie	terrestrial	USA	134	98	1
Soil	terrestrial	Netherlands	18	2	17
Sonoran desert	terrestrial	USA	48	9	1
Trelean Wood	terrestrial	USA	30	6	1
California kelp bed	marine	USA	21	4	1
California tidal flat	marine	USA	24	2	1
Cape Ann	marine	USA	25	4	1
Chesapeake Bay	marine	USA	33	5	18
Company Bay	marine	New Zealand	66	4	19
Monterey Bay	marine	USA	37	5	1
Small reef	marine	USA	46	3	1
Oceanic shelf	marine	USA	29	2	1
St Marks seagrass	marine	USA	48	6	20
Ythan Estuary 96	marine	Great Britain	134	5	21

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