Adams, D.C., Gurevitch, J. & Rosenberg, M. (1997). Resampling tests for metaanalysis
of ecological data. Ecology, 78, 1277–1283.
Aviron, S., Herzog, F., Klaus, I., Sch€upbach, B. & Jeanneret, P. (2011). Effects
of wildflower strip quality, quantity, and connectivity on butterfly diversity in a
Swiss arable landscape. Restor. Ecol., 19, 500–508.
Balvanera, P., Pfisterer, A.B., Buchmann, N., He, J., Nakashizuka, T., Raffaelli,
D. et al. (2006). Quantifying the evidence for biodiversity effects on ecosystem
functioning and services. Ecol. Lett., 9, 1146–1156.
Bancroft, B.A., Baker, N.J. & Blaustein, A.R. (2007). Effects of UVB radiation
on marine and freshwater organisms: a synthesis through meta-analysis. Ecol.
Lett., 10, 332–345.
Bat�ary, P., B�aldi, A., S�arospataki, M., Kohler, F., Verhulst, J., Knop, E. et al.
(2010). Effect of conservation management on bees and insect-pollinated
grassland plant communities in three European countries. Agric. Ecosyst.
Environ., 136, 35–39.
Bat�ary, P., B�aldi, A., Kleijn, D. & Tscharntke, T. (2011). Landscape-moderated
biodiversity effects of agri-environment management: a meta-analysis. Proc. R.
Soc. B, 278, 1894–1902.
Benton, T.G., Vickery, J.A. & Wilson, J.D. (2003). Farmland biodiversity: is
habitat heterogeneity the key? Trends Ecol. Evol., 18, 182–188.
Biesmeijer, J.C., Roberts, S.P.M., Reemer, M., Ohlem€uller, R., Edwards, M.,
Peeters, T. et al. (2006). Parallel declines in pollinators and insect-pollinated
plants in Britain and the Netherlands. Science, 313, 351–354.
Bignal, E.M. & McCracken, D.I. (1996). Low-intensity farming systems in the
conservation of the countryside. J. Appl. Ecol., 33, 413–424.
Billeter, R., Liira, J., Bailey, D., Bugter, R., Arens, P., Augenstein, I. et al. (2008).
Indicators for biodiversity in agricultural landscapes: a pan-European study.
J. Appl. Ecol., 45, 141–150.
Blomqvist, M.M., Tamis, W.L.M. & De Snoo, G.R. (2009). No improvement of
plant biodiversity in ditch banks after a decade of agri-environment schemes.
Basic Appl. Ecol., 10, 368–378.
Bommarco, R., Biesmeijer, J.C., Meyer, B., Potts, S.G., P€oyry, J., Roberts, S.P.M.
et al. (2010). Dispersal capacity and diet breadth modify the response of wild
bees to habitat loss. Proc. R. Soc. B, 277, 2075–2082.
Carvell, C., Osborne, J.L., Bourke, A.F.G., Freeman, S.N., Pywell, R.F. & Heard,
M.S. (2011). Bumble bee species’ responses to a targeted conservation
measure depend on landscape context and habitat quality. Ecol. Appl., 21,
1760–1771.
Concepci�on, E.D., D�ıaz, M., Kleijn, D., B�aldi, A., Bat�ary, P., Clough, Y. et al.
(2012). Interactive effects of landscape context constrain the effectiveness of
local agri-environmental management. J. Appl. Ecol., 49, 695–705.
EEA (2010). Assessing biodiversity in Europe: the 2010 report. EEA report No
5/2010. European Environment Agency, Copenhagen.
Ekroos, J., Heli€ol€a, J. & Kuussaari, M. (2010). Homogenization of lepidopteran
communities in intensively cultivated agricultural landscapes. J. Appl. Ecol., 47,
459–467.
Gabriel, D. & Tscharntke, T. (2007). Insect pollinated plants benefit from
organic farming. Agric. Ecosyst. Environ., 118, 43–48.
Gabriel, D., Sait, S.M., Kunin, W.E. & Benton, T.G. (2013). Food production
vs. biodiversity: comparing organic and conventional agriculture. J. Appl. Ecol.,
50, 355–364.
Gurevitch, J. & Hedges, L.V. (1999). Statistical issues in ecological meta-analyses.
Ecology, 80, 1142–1149.
Haaland, C., Naisbit, R.E. & Bersier, L. (2011). Sown wildflower strips for insect
conservation: a review. Insect Conserv. Divers, 4, 60–80.
Herzog, F., Steiner, B., Bailey, D., Baudry, J., Billeter, R., Buk�acek, R. et al.
(2006). Assessing the intensity of temperate European agriculture at the
landscape scale. Eur. J. Agron., 24, 165–181.
Kells, A.R., Holland, J.M. & Goulson, D. (2001). The value of uncropped field
margins for foraging bumblebees. J. Insect Conserv., 5, 283–291.
Kleijn, D. & Sutherland, W.J. (2003). How effective are agri-environment
schemes in maintaining and conserving biodiversity? J. Appl. Ecol., 40, 947–969.
Kleijn, D., Baquero, R.A., Clough, Y., D�ıaz, M., De Esteban, J., Fern�andez, F.
et al. (2006). Mixed biodiversity benefits of agri-environment schemes in five
European countries. Ecol. Lett., 9, 243–254.
Kleijn, D., Kohler, F., B�aldi, A., Bat�ary, P., Concepci�on, E.D., Clough, Y. et al.
(2009). On the relationship between farmland biodiversity and land-use
intensity in Europe. Proc. R. Soc. B, 276, 903–909.
Kleijn, D., Rundl€of, M., Scheper, J., Smith, H.G. & Tscharntke, T. (2011). Does
conservation on farmland contribute to halt biodiversity decline? Trends Ecol.
Evol., 26, 474–481.
Klein, A., Vaissi�ere, B.E., Cane, J.H., Steffan-Dewenter, I., Cunningham, S.A.,
Kremen, C. et al. (2007). Importance of pollinators in changing landscapes for
world crops. Proc. R. Soc. B, 274, 303–313.
Kohler, F., Verhulst, J., Knop, E., Herzog, F. & Kleijn, D. (2007). Indirect
effects of grassland extensification schemes on pollinators in two contrasting
European countries. Biol. Conserv., 135, 302–307.
Lajeunesse, M.J. (2011). On the meta-analysis of response ratios for studies with
correlated and multi-group designs. Ecology, 92, 2049–2055.
Le F�eon, V., Schermann-Legionnet, A., Delettre, Y., Aviron, S., Billeter, R.,
Bugter, R. et al. (2010). Intensification of agriculture, landscape composition
and wild bee communities: a large scale study in four European countries.
Agric. Ecosyst. Environ., 137, 143–150.
Marini, L., Quaranta, M., Fontana, P., Biesmeijer, J.C. & Bommarco, R. (2012).
Landscape context and elevation affect pollinator communities in intensive
apple orchards. Basic Appl. Ecol., 13, 681–689.
McAuley, L., Pham, B., Tugwell, P. & Moher, D. (2000). Does the inclusion of
grey literature influence estimates of intervention effectiveness reported in
meta-analyses? Lancet, 356, 1228–1231.
M€uller, A., Diener, S., Schnyder, S., Stutz, K., Sedivy, C. & Dorn, S. (2006).
Quantitative pollen requirements of solitary bees: implications for bee
conservation and the evolution of bee-flower relationships. Biol. Conserv., 130,
604–615.
Myers, J.A. & Harms, K.E. (2009). Seed arrival, ecological filters, and plant
species richness: a meta-analysis. Ecol. Lett., 12, 1250–1260.
Ollerton, J., Winfree, R. & Tarrant, S. (2011). How many flowering plants are
pollinated by animals? Oikos, 120, 321–326.
Potts, S.G., Roberts, S.P.M., Dean, R., Marris, G., Brown, M.A., Jones, R. et al.
(2010). Declines of managed honey bees and beekeepers in Europe. J. Apic.
Res., 49, 15–22.
Pywell, R.F., Warman, E.A., Carvell, C., Sparks, T.H., Dicks, L.V., Bennett, D.
et al. (2005). Providing foraging resources for bumblebees in intensively
farmed landscapes. Biol. Conserv., 121, 479–494.
Rosenberg, M.S., Adams, D.C. & Gurevitch, J. (2000). MetaWin. Statistical Software
for Meta-Analysis, Version 2. Sinauer Ass. Inc., Sunderland, MA.
Rosenthal, R. (1979). The ‘file drawer problem’ and tolerance for null results.
Psychol. Bull., 86, 638–641.
Roulston, T.H. & Goodell, K. (2011). The role of resources and risks in
regulating wild bee populations. Annu. Rev. Entomol., 56, 293–312.
Rundl€of, M. & Bommarco, R. (2011). STEP Deliverable 4.2: Report on the Uptake of
Mitigation Strategies Counteracting Pollinator Loss Across Europe. Swedish University
of Agricultural Sciences, Uppsala.
Tryjanowski, O., Hartel, T., B�aldi, A., Szyma�nski, P., Tobolka, M., Herzon, I.
et al. (2011). Conservation of farmland birds faces different challenges in
Western and Central-Eastern Europe. Acta Ornithol., 46, 1–12.
Tscharntke, T., Klein, A.M., Kruess, A., Steffan-Dewenter, I. & Thies, C. (2005).
Landscape perspectives on agricultural intensification and biodiversity:
ecosystem service management. Ecol. Lett., 8, 857–874.
Tscharntke, T., Tylianakis, J.M., Rand, T.A., Didham, R.K., Fahrig, L., Bat�ary, P.
et al. (2012). Landscape moderation of biodiversity patterns and processes:
eight hypotheses. Biol. Rev., 87, 661–685.
Van Kleunen, M., Weber, E. & Fischer, M. (2010). A meta-analysis of trait
differences between invasive and non-invasive plant species. Ecol. Lett., 13,
235–245.
Van Swaay, C., Warren, M. & Lo€ıs, G. (2006). Biotope use and trends of
European butterflies. J. Insect Conserv., 10, 189–209.
V�asquez, D.P., Morris, W.F. & Jordano, P. (2005). Interaction frequency as a
surrogate for the total effect of animal mutualists on plants. Ecol. Lett., 8,
1088–1094.
Veddeler, D., Klein, A. & Tscharntke, T. (2006). Contrasting responses of bee
communities to coffee flowering at different spatial scales. Oikos, 112, 594–
601.
Wang, M.C. & Bushman, B.J. (1998). Using the normal quantile plot to explore
meta-analytic data sets. Psychol. Methods, 3, 46–54.
Wilkinson, N.I., Wilson, J.D. & Anderson, G.Q.A. (2012). Agri-environment
management for corncrake Crex crex delivers higher species richness and
abundance across other taxonomic groups. Agric. Ecosyst. Environ., 155, 27–
34.