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: The concept of energy applied to a woodland community Citation: Animal Populations in Relation to Their Food Resources, A. Watson, Ed. (Blackwell Scientific, Oxford, England, 1970), pp. 389-401. Year: 1970 # of species 22 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 1 -1 0 0 0 -1 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 2 0 -1 0 0 0 -1 0 -1 0 0 -1 0 -1 0 0 0 0 0 0 0 0 0 3 0 0 -1 0 0 -1 -1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 0 0 -1 0 0 0 0 -1 -1 0 0 0 0 0 -1 0 0 0 0 0 0 5 1 0 0 0 0 0 0 0 0 0 -1 -1 -1 0 0 0 0 0 0 0 0 0 6 0 1 1 0 0 0 0 0 0 0 -1 0 -1 -1 -1 0 0 0 0 0 -1 -1 7 0 0 1 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 8 0 1 1 0 0 0 0 0 0 0 0 0 -1 0 -1 0 0 0 0 0 0 0 9 0 0 0 1 0 0 0 0 0 0 0 0 0 0 -1 0 0 -1 0 0 0 -1 10 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 11 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 -1 -1 0 0 0 12 0 0 0 0 1 0 0 0 0 0 0 0 -1 0 0 0 -1 0 0 0 0 0 13 0 1 0 0 1 1 1 1 0 0 0 1 0 0 0 0 0 0 -1 0 0 0 14 0 0 0 0 0 1 0 0 0 0 0 0 0 0 -1 0 0 0 0 -1 0 0 15 0 0 0 0 0 1 0 1 1 0 0 0 0 1 0 1 0 0 0 0 -1 -1 16 0 0 0 1 0 0 0 0 0 1 0 0 0 0 -1 0 0 0 0 0 -1 0 17 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 19 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 20 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 21 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 22 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 Species# Species 1 herbs 2 trees and bushes 3 oak trees 4 total litter 5 insects 6 winter moth 7 Tartix 8 leaf feeders 9 earthworms 10 fungi 11 voles, mice 12 spiders 13 titmice 14 Cyzenis 15 Philanthus, Abax, Fernoia 16 soil insects, mites 17 parasites 18 owls 19 weasels 20 hyperparasites 21 shrews 22 moles