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: Paarjarven energiatalous Citation: Luonnon Tutkija 78:181-190 (1974). Year: 1974 # of species 21 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 1 -1 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 2 0 -1 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 -1 0 -1 -1 -1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 4 0 1 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 1 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 6 0 0 1 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 7 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 8 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 -1 0 0 9 1 0 0 1 0 0 0 0 0 0 0 -1 -1 -1 -1 -1 0 0 0 -1 0 10 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 11 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 12 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 -1 0 0 0 0 0 13 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 -1 -1 0 0 14 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 15 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 -1 0 16 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 -1 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 -1 0 18 0 0 0 0 0 0 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0 19 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 20 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 -1 21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 Species# Species 1 phytoplankton 2 allochthonous organic matter 3 bottom organic matter 4 bacteria, protozoa, fungi 5 Turbellaria, Halacaridae, Tartigrada, Copepoda (Diacyclops, Bryocamptus), Cladocera ( Alona, Ilyocryptus), Chironomidae ( mesocricotopus, Micropsectra), Cyntheridea 6 Nematoda (Ironus, Tobrilus), Oligochaeta (Psammoryctes, Tubifex, Peloscolex, Stylodrilus) 7 Pisidium 8 Pallasea 9 daphnia, Bosmina, Polyarthra, Conochilus, Eudiaptomus, Synchaeta 10 Chironomidae (Procladius, Pentaneurini, Protanypus) 11 Acanthocyclops, Paracladopelma, Monodiamesa 12 Asplanchna, Heterocope, Thermocyclops, Leptodora 13 Gammaracanthus 14 Choaborus 15 Mysis 16 Coregonus albula 17 young smelt 18 ruff 19 burbot 20 smelt 21 walleye