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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 aij
= -1 and aji = 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.
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| Title: |
Role of allochthonous detritus in the trophic structure of a woodland springbrook community |
| Citation: |
Ecology 48:139-149 (1967). Prior number: Cohen (1978) 18 |
| Year: |
1978 |
| # of species |
13 |
Community Matrix:
| | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | | 6 | -1 | 0 | 0 | -1 | -1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | | 7 | 0 | 0 | -1 | -1 | -1 | -1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | | 8 | -1 | 0 | -1 | -1 | -1 | -1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | | 9 | 0 | -1 | -1 | 0 | 0 | -1 | -1 | 0 | 0 | 0 | 0 | 1 | 1 | | 10 | 0 | -1 | -1 | -1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | | 11 | 0 | -1 | -1 | 0 | -1 | -1 | -1 | 0 | 0 | 0 | 0 | 1 | 1 | | 12 | 0 | -1 | 0 | 0 | 0 | -1 | -1 | -1 | -1 | -1 | -1 | -1 | 0 | | 13 | 0 | 0 | 0 | 0 | 0 | 0 | -1 | -1 | -1 | -1 | -1 | 0 | -1 |
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| Species# | Species |
| 1 | Phagocata |
| 2 | Decapoda- Orconectes, Cambarus |
| 3 | Plecoptera- Isoperia, Isogenus |
| 4 | Megaloptera- Nigronia, Sialis |
| 5 | Pisces- Rhinichthys, Semotilus |
| 6 | Gammarus |
| 7 | Trichoptera-Diplectrona, Rhyacophila |
| 8 | Asellus |
| 9 | Ephemeroptera- Baetis, Centroptilum, Epeorus, Paraleptophlebia, Pseudocloeon |
| 10 | Trichoptera- Neophylax, Glossosoma |
| 11 | Diptera- Tendipedidae, Simulium |
| 12 | detritus |
| 13 | diatoms |
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