For my final year thesis I require data on the average body mass of terrestrial predators and their prey. I have come across many papers which have used such data sets however, the data is not provided or I cant access it.
Thank you in advance for any help.
please see the link below it may be helpful
https://data.mendeley.com/datasets
I've read some papers that appear to have cherry picked representative animal sizes. It's not an easy question since some populations are heavily exploited and current mean sizes are not what would have been seen in a natural ecosystem. Additionally, you have variability in average size for species with large geographic ranges (e.g. Bergman's rule). My suggestion is to pull what you can from literature and to use a range of sizes. Depending on the nature of your research this might be a good application for some simple Monte Carlo work.
Not sure about other taxa, but for mammals, you can use PanTHERIA:
https://ecologicaldata.org/wiki/pantheria
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