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 27 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 26 27 1 -1 0 0 0 0 -1 -1 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 -1 0 0 0 -1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 4 0 0 0 -1 0 0 -1 -1 -1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 6 1 1 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 7 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 -1 -1 -1 0 -1 0 0 0 -1 -1 0 0 9 0 0 0 1 0 0 0 0 0 0 0 0 0 0 -1 0 -1 0 -1 -1 0 0 0 0 0 0 0 10 0 0 0 1 0 0 0 0 0 0 0 0 0 0 -1 0 -1 0 -1 -1 0 0 -1 -1 -1 0 0 11 0 0 0 1 0 0 0 0 0 0 0 0 0 0 -1 0 -1 -1 -1 0 0 0 0 -1 -1 -1 0 12 0 0 0 1 0 0 0 0 0 0 0 0 0 0 -1 0 -1 -1 -1 -1 0 0 0 0 0 -1 0 13 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 0 -1 -1 0 14 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 -1 -1 -1 -1 -1 0 15 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 -1 -1 -1 0 0 16 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 -1 -1 0 0 17 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 19 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 -1 0 20 0 0 0 0 0 0 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 -1 -1 -1 -1 -1 0 22 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 23 0 0 0 0 1 0 0 0 0 1 0 0 0 1 1 1 0 0 0 0 1 0 0 0 0 0 -1 24 0 0 0 0 0 0 0 1 0 1 1 0 0 1 1 1 0 0 0 0 1 0 0 0 0 0 -1 25 0 0 0 0 0 0 0 1 0 1 1 0 1 1 1 1 0 0 0 0 1 0 0 0 0 0 -1 26 0 0 1 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 0 1 0 0 0 0 0 -1 27 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 Species# Species 1 phytoplankton 2 allochthonous organic matter 3 Potamogeton, Lobelia, Isoetes, Sparganium 4 bottom organice matter, benthic macroalgae 5 terrestrial adult insects 6 bacterioplankton 7 Anodonta 8 Copepoda( Attheyella, Paracyclops, Paracamptus..), Ostracoda (Candona, darwinula, Cyclocypris, Cyprodopsis) 9 Nematoda (Ironus, Tobrilus), Oligochaeta ( Limnodrilus, Psammoryctes, Peloscolex, Lumbriculidae, Naididae) 10 Asellus, Pallasea, Cladocera (Eurycercus, Alona, Alonella) 11 Chironomidae (Microtendipes, Tanytarsus, Pseudochironomus, Limnochironomus) 12 Ephemeroptera (Caenis, Ephemera, Cloeon,..) 13 Trichoptera ( Athripsodes, Oxyethira), Mollusca (Psidium, Lymnaea Valvata, Gyraulus, Sphaerium) 14 Sida, Eurycercus, Bosmina, diaphanosoma, Rotatoria 15 Acanthocyclops, Macrocyclops, Demicryptochironomus, Monodiameda 16 Chironomidae (Procladius, Cryptochironomus, Leptochironomus, Ablabesmyia) 17 Hiudinea (Erpobdella, Helobdella) 18 Mermithidae 19 Trichoptera (Cyrnus, Oecetis, Molanna) 20 Turbellaria 21 Asplanchna, Polyphemus 22 Coregonus lavaretus 23 salakka 24 Perca fluviatilis 25 ruff ( Gymnocephalus cernus) 26 Rutilus rutilus 27 pike, adult yellow perch (Perca)