Food Web Database

The food webs are based on published studies of various types of habitat. The original food web matrix is not a square matrix.  It contains m columns of predators and n rows of preys with a 1 at the intersection to indicate a direct feeding relation. We converted the original food web matrix into a community matrix and set a_ij = -1 and a_ji = 1 if species i feeds on species j. You can decide if a self-loop is added to each species or to the primary producer.

Web Number:
1 ,	2 ,	3 ,	4 ,	5 ,	6 ,	7 ,	8 ,	9 ,	10 ,	11 ,	12 ,	13 ,	14 ,	15 ,
16 ,	17 ,	18 ,	19 ,	20 ,	21 ,	22 ,	23 ,	24 ,	25 ,	26 ,	27 ,	28 ,	29 ,	30 ,
31 ,	32 ,	33 ,	34 ,	35 ,	36 ,	37 ,	38 ,	39 ,	40 ,	41 ,	42 ,	43 ,	44 ,	45 ,
46 ,	47 ,	48 ,	49 ,	50 ,	51 ,	52 ,	53 ,	54 ,	55 ,	56 ,	57 ,	58 ,	59 ,	60 ,
61 ,	62 ,	63 ,	64 ,	65 ,	66 ,	67 ,	68 ,	69 ,	70 ,	71 ,	72 ,	73 ,	74 ,	75 ,
76 ,	77 ,	78 ,	79 ,	80 ,	81 ,	82 ,	83 ,	84 ,	85 ,	86 ,	87 ,	88 ,	89 ,	90 ,
91 ,	92 ,	93 ,	94 ,	95 ,	96 ,	97 ,	98 ,	99 ,	100 ,	101 ,	102 ,	103 ,	104 ,	105 ,
106 ,	107 ,	108 ,	109 ,	110 ,	111 ,	112 ,	113 ,

Title: Biotic communities of the Aspen Parkland of central Canada Citation: Ecology, 11:356-442 (1930). Prior number: Cohen (1978) 1.3 Year: 1978 # of species 25 Add self-loop to only primary producers Add self-loop to all species Community Matrix:   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 0 0 0 1 1 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 3 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 -1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 5 -1 0 0 -1 0 0 0 1 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 -1 6 0 0 -1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 7 0 0 0 0 0 0 0 1 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 8 0 -1 0 0 -1 -1 -1 -1 0 -1 0 0 -1 0 -1 0 0 0 0 0 0 0 0 -1 0 9 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 1 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 11 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 12 0 0 0 0 0 0 1 0 0 1 0 0 1 1 1 0 0 1 0 0 1 0 0 0 0 13 0 0 0 0 0 0 0 1 -1 0 0 -1 0 0 0 0 0 0 0 1 0 0 0 0 0 14 0 0 0 0 0 0 0 0 0 0 0 -1 0 -1 0 0 0 0 0 0 0 0 0 0 0 15 0 0 0 0 0 0 0 1 0 0 0 -1 0 0 0 0 0 0 0 1 0 0 0 0 0 16 0 0 0 0 1 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 18 0 0 0 0 0 0 0 0 -1 0 0 -1 0 0 0 0 -1 0 0 1 0 0 0 0 0 19 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 20 0 -1 0 0 0 -1 0 0 0 0 0 0 -1 0 -1 0 0 -1 0 -1 -1 -1 0 0 0 21 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 1 0 0 0 0 0 22 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 -1 1 0 0 0 0 0 23 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 24 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 25 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 Species# Species 1 Baltimore oriole, chickadee, least flycatcher, warbling vireo, rosebreasted grossbeak, willow thrush 2 canker, fomes 3 hariy and downy woodpeckers 4 spiders ( mature forest) 5 insects (mature forest) 6 Dicera, Saperda 7 red squirrel 8 Populus, Cornus, Pryola, Aralia 9 goshawk 10 redbacked vole (Evolomys) 11 Cooper's and sharpshinned hawks 12 great horned owl 13 ruffed grouse 14 flicker 15 crow 16 house wren 17 ticks 18 showshoe rabbit 19 red-eyed vireo, yellow warbler, gold finch, catbird, brown thrasher, towhee, robin 20 Populus, Symphoricarpos, Corylus, Prunus, Amelanchier 21 redbacked vole, Franklin ground squirrel 22 insects (forest edge) 23 spiders (forest edge) 24 snails 25 frogs