St. Marks Food Web (Undirected)

Undirected unweighted simple graph derived from the St. Marks seagrass food web. Directed predation edges merged to undirected connections. Edge weights removed. Contains self-loops (cannibalistic taxa). Nodes represent species/taxa with heterogeneous trophic roles.

npx keepset fetch nr-eco-stmarks-undirected

Nodes: 54
Edges: 356
Size: 2.9 KiB

Fetch and preview this dataset on this page, or download the result as JSON. The command line fetches it without a browser.

Overview

Id	`nr-eco-stmarks-undirected`
Namespace	`networkrepository`
Aliases	`eco-stmarks-undirected`
Category	`graph/v1`
Kind	graph
Domain	Ecology
Tags	unweighted
Licence	Creative Commons Attribution-ShareAlike (version not stated)
Catalogue	`keepset` 1.33.0

Sources and provenance

#	URL	Status	Retrieved	Read by recipe	Pinned snapshot	SHA-256
0	https://nrvis.com/download/data/eco/eco-stmarks.zip	live	2026-04-20	yes	20210525040744raw	`1ebf44ed01d3`

Citations

Christian, R. R., Luczkovich, J. J. (1999). Organizing and understanding a winter's seagrass foodweb network through effective trophic levels. Ecological Modelling.

Recipe

Source	#0
Archive	zip
Member	ending `.edges`
Parser format	`"edge-list"`
Parser encoding	`"utf-8"`
Parser delimiter	`"detect"`
Parser skipLines	`0`
Parser commentPrefixes	`["#","%"]`
Parser sourceColumn	`0`
Parser targetColumn	`1`

Crosswalk

keepset/topology to graph/v1, as a crossmap crosswalk.

Rule	From	To	Direction
move	`meta`	`meta`	both
move	`nodes[].id`	`nodes[].id`	both
move	`edges[].source`	`edges[].source`	both
move	`edges[].target`	`edges[].target`	both

Expected counts

Edges	356
Nodes	54

Properties

Directed	no
Download bytes	2.9 KiB
Heterogeneous	yes
Multigraph	yes
Raw bytes	0 B
Self loops	yes
Weighted	yes