Data used for caclulation of beta diversity of predators in: Diversified cropping strengthens herbivore regulation by providing seasonal resource continuity to predators 

We studied the beta diveristy of carabid predator communities in the same field, and compared them among subsequent time steps in the season. In 2020. we sampled 19 arable fields, and calculated the beta diveristy of predator communities between first and second, as well as second and thrid sampling session. First sampling session corresponds to tillering, second sampling session to heading, and thrid sampling session to ripening of the crop. Overall beta diveristy was further decomposed into turnover and richness components.


The data in the 'Data_submission_BetaDiv_community.csv' file contains information on the assessed beta diveristy of predators between subsequent time steps, comparing predator communities between session one and two ('1_2') or two and three (2_3). For further information, and exact calculation of beta diversity components, see methods in the publication Heinen et al. (2024) 'Diversified cropping strengthens herbivore regulation by providing seasonal resource continuity to predators'. Journal of Applied Ecology.


field:		ID for each of the 19 fields

betaALL_1_2:	Overall beta diveristy of predator communities between session 1 and session 2

betaALL_2_3:	Overall beta diversity of predatorcommunities between session 2 and 3

beta_rich_1_2:	Richness component of predator communities beta diveristy between session 1 and 2

beta_rich_2_3:	Richness component of predator communities beta diveristy between session 2 and 3

beta_turn_1_2:	Turnover component of predator communities beta diveristy between session 1 and 2

beta_turn_2_3:	Turnover component of predator communities beta diveristy between session 2 and 3


treatment:	Three treatments. 'FminRa'= fields treated with mineral fertiliser and annual crop rotations; 'ForgRa'= fields treated with organic fertiliser and annual crop rotations; 'ForgRl'= fields treated with organic fertiliser and three years of ley in the crop rotation.