Ecological Archives M078-026-A4

Catrin Westphal, Riccardo Bommarco, Gabriel Carré, Ellen Lamborn, Nicolas Morison, Theodora Petanidou, Simon G. Potts, Stuart P. M. Roberts, Hajnalka Szentgyörgyi, Thomas Tscheulin, Bernard E. Vaissière, Michal Woyciechowski, Jacobus C. Biesmeijer, William E. Kunin, Josef Settele, and Ingolf Steffan-Dewenter. 2008. Measuring bee diversity in different European habitats and biogeographical regions. Ecological Monographs 78:653–671.

Appendix D. Results of additional linear mixed-effects models testing for differences in the numbers of collected individuals and estimated species richness (ACE values) between the methods (observation plots, standardized transect walks, and pan traps) and habitat types.

TABLE D1. Results of the mixed-effects model testing for differences in the numbers of collected individuals between methods (observation plots, standardized transects, pan traps) and habitat types (N = 96). Country was included as random effect.


Source of variation

df

F

P

Method

2, 86

35.61

< 0.0001

Habitat type

1, 86

0.0007

ns

Method × habitat type

2, 86

7.19

0.0013

 

FigD1
 

   FIG. D1. Differences in the numbers of collected individuals between (a) the observation plots (OP), standardized transect walks (ST), and pan traps (PT), and (b) the agricultural and semi-natural habitats. (c) Interaction between the factors method and habitat type with respect to the numbers of collected individuals (mean ± SE; for statistical details see Table D1).


 

TABLE D2. Results of the mixed-effects model testing for differences in the estimated species richness (ACE values) between methods (observation plots, standardized transects, pan traps) and habitat types (N = 96). Country was included as random effect.


Source of variation

df

F

P

Method

2, 86

63.02

< 0.0001

Habitat type

1, 86

27.40

< 0.0001

Method × habitat type

2, 86

2.61

0.0794

 

FigD2
 

   FIG. D2. Differences in the estimated species richness (ACE) between (a) the observation plots (OP), standardized transect walks (ST), and pan traps (PT), and (b) the agricultural and semi-natural habitats. (c) Interaction between the factors method and habitat type with respect to the estimated numbers of bee species (mean ± SE; for statistical details see Table D2).


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