Broadstone {econullnetr}

Part of the highly-resolved food web from Broadstone Stream, UK

Description

Part of the highly-resolved macroinvertebrate food web from Broadstone Stream in south-east England (see Woodward et al., 2005 for full details of the web). This data frame contains data collected in August 1996, with 19 macroinvertebrate taxa. Predation was determined via visual gut contents analysis, with identification of hard parts allowing counts of the number of individual prey organisms each individual predator consumed. There are three accompanying data sets:

1. Broadstone.prey Gives the total abundance of each prey taxon from 30 Surber samples collected at the same time as the interaction data.

2. Broadstone.fl Specifies 'forbidden' links which are not allowed in the null model.

3. Broadstone.nodes The abundance and mean body mass for each taxon in the food web in a format for use alongside a generate_null_model object with the cheddar package (Hudson et al., 2013). Body size is taken from cheddar's 'BroadstoneStream' data set.

Usage

Broadstone

Format

A data frame with 319 rows and 20 columns. Each row represents the gut contents of an individual predator. There are 20 columns in total, with the first column (Predator) indicating the predator taxon (seven taxa in total) and the remaining 19 columns indicating the number of individuals eaten of each of the 19 potential prey taxa.

Source

Woodward, G., Speirs, D.C. & Hildrew, A.G. (2005) Quantification and resolution of a complex, size-structured food web. Advances in Ecological Research, 36, 84–135.