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trophich — trophiCH Swiss multi-trophic metaweb (2025)

Description

A metaweb of the trophic interactions among the terrestrial species of Switzerland (vertebrates, invertebrates and plants), "trophiCH", compiled by Reji Chacko et al. from the literature (over 700 sources: field studies, books, databases, expert knowledge). Nodes are taxa, mostly species, and a directed edge $(i, j)$ indicates that taxon $i$ consumes (preys on, feeds on, pollinates, parasitizes) taxon $j$. Interactions recorded in the literature at a coarser taxonomic level (e.g. a predator feeding on a genus or family) were assigned by the authors to the Swiss species of that taxon, and species without recorded diet were assigned the interactions of related species in some special cases.

There are three networks, from the files of the data set (version 1.0):

  • empirical: the interactions as recorded in the sources (442,624 interactions), between taxa of various ranks.
  • inferred: the empirical interactions together with those inferred by assigning the targets recorded at the genus or family level to their Swiss species (1,181,686 interactions).
  • final: the final metaweb, which also includes the inferences for the special cases (1,188,049 interactions).

Self-loops are cannibalism or feeding within the same taxon. A pair of taxa can be connected by more than one edge, with different life stages. Nodes are identified by their name and rank; only the taxa that take part in interactions are included (the authors' checklist has 24,167 taxa).

The networks have the following properties:

  • name: the name of the taxon (e.g. Abax parallelepipedus, or a feeding group).
  • rank: the taxonomic rank of the taxon (e.g. Species, Genus, Family; empty for some non-taxonomic nodes, e.g. detritus).
  • kingdom, phylum, class, order, family, genus: the taxonomy of the taxon, from the authors' checklist of Swiss taxa; empty if the taxon is not in the checklist.
  • habitat: the habitats where the taxon occurs (e.g. Forest; Grassland), from the checklist; empty if not known.
  • zone: the vertical zones where the taxon occurs (e.g. In ground; On ground or in leaf litter), from the checklist; empty if not known.
  • red_list: the Swiss Red List category of the taxon (e.g. LC, VU, NE for not evaluated), from the checklist; empty if not known.
  • interaction (edges): the type of interaction (Predation, Herbivory, Pollination, Parasitoidism, Parasitism, Kleptoparasitism; empty if not given).
  • source_life_stage, target_life_stage (edges): the life stages of the consumer and of the resource to which the interaction applies (e.g. Adult, Young, Young and Adult); empty if not specified.
  • citation (edges): the identifier of the source of the interaction in the authors' list of references.
  • inference (edges, inferred and final only): how the interaction was inferred (e.g. Target_Genus: from an interaction recorded with the genus of the target); empty for the empirical interactions.
Tags
Biological Food web Unweighted Multigraph Metadata
Citation
Upstream URL OK
https://doi.org/10.16904/envidat.467
Upstream license
CC BY 4.0, https://creativecommons.org/licenses/by/4.0/
Networks
Tip: click on a column header to sort the list, or hover over it for a description.
Column legend
$\left<k\right>$
Mean degree
$\sigma_k$
Standard deviation of the degrees
$\lambda_h$
Largest eigenvalue of the Hashimoto (non-backtracking) matrix
$\tau$
Random walk mixing time
$r$
Degree assortativity
$c$
Global clustering coefficient
$\oslash$
(Pseudo-) diameter
$S$
Relative size of the largest component
NPs
Node properties
EPs
Edge properties
Name Nodes Edges $\left<k\right>$ $\sigma_k$ $\lambda_h$ $\tau$ $r$ $c$ $\oslash$ $S$ Kind Mode NPs EPs gt GraphML GML csv
empirical 22,870 442,624 19.35 144.55 378.22 17.10 -0.30 0.04 9 1.00 Directed Unipartite name rank kingdom phylum class order family genus habitat zone red_list interaction source_life_stage target_life_stage citation 1.0 MiB 2.6 MiB 2.6 MiB 2.3 MiB
inferred 26,245 1,181,686 45.03 260.77 478.23 10.91 -0.27 0.03 9 1.00 Directed Unipartite name rank kingdom phylum class order family genus habitat zone red_list interaction source_life_stage target_life_stage citation inference 1.3 MiB 5.8 MiB 5.8 MiB 5.0 MiB
final 26,251 1,188,049 45.26 261.51 478.57 10.98 -0.27 0.03 9 1.00 Directed Unipartite name rank kingdom phylum class order family genus habitat zone red_list interaction source_life_stage target_life_stage citation inference 1.3 MiB 5.8 MiB 5.8 MiB 5.0 MiB
Ridiculograms*
* These are automatically generated force-directed visualizations, and can be quite meaningless for networks both big and small. They should not be taken seriously as sources of scientific insight. See here for a discussion.