Individual-based food webs. Species identity, body size and sampling effects

Advances in Ecological Research

Volumn 43, Issue C, 2010, Pages 211-266

  Woodward, Guy ^a   Blanchard, Julia ^a   Lauridsen, Rasmus B ^a   Edwards, Francois K ^a   Jones, J Iwan ^a   Figueroa, David ^a   Warren, Philip H ^a   Petchey, Owen L ^a  

^a NONE

Author keywords

Allometry; Body size; Cannibalism; Complexity; Connectance; Energy flux; Feeding loops; Food chain; Foraging; Intraguild predation; Omnivory; Size spectra; Size structure; Trivariate relationships; Trophic level

Indexed keywords

EID: 78049447018     PISSN: 00652504     EISSN: None     Source Type: Book Series    
DOI: 10.1016/B978-0-12-385005-8.00006-X     Document Type: Book

References (136)

1. Allesina S., Alonso D., Pascual M. A general model for food web structure. Science 2008, 320:658-661.
2. Andersen K.H., Pedersen M. Damped trophic cascades driven by fishing in model marine ecosystems. Proc. R. Soc. B-Biol. Sci. 2010, 277:795-802.
3. Banašek-Richter C., Bersier L.F., Cattin M.F., Baltensperger R., Gabriel J.-P., Merz Y., et al. Complexity in quantitative food webs. Ecology 2009, 90:1470-1477.
4. Barnes C., Bethea D.M., Brodeur R.D., Spitz J., Ridoux V., Pusineri C., et al. Predator and prey body sizes in marine food webs. Ecology 2008, 89:881.
5. Beckerman A.P., Petchey O.L., Warren P.H. Foraging biology predicts food web complexity. Proc. Natl. Acad. Sci. USA 2006, 103:13745-13749.
6. Belgrano A., Allen A.P., Enquist B.J., Gillooly J.F. Allometric scaling of maximum population density: A common rule for marine phytoplankton and terrestrial plants. Ecol. Lett. 2002, 5:611-613.
7. Benke A.C., Wallace J.B. Trophic basis of production among riverine caddisflies: Implications for food web analysis. Ecology 1997, 78:1132-1145.
8. Benke A.C., Huryn A.D., et al. Length-mass relationships for freshwater macroinvertebrates in North America with particular reference to the southeastern United States. J. North Am. Benthol. Soc. 1999, 18:308-343.
9. Berlow E.A., Dunne J.A., Martinez N.D., Starke P.B., Williams R.J., Brose U. Simple prediction of interaction strengths in complex food webs. Proc. Natl. Acad. Sci. USA 2009, 106:187-191.
10. Bersier L.F., Sugihara G. Scale-invariant or scale dependent behavior of the link density property in food webs. Am. Nat. 1999, 153:676-682.
11. Blanchard J.L., Dulvy N.K., Jennings S., Ellis J.E., Pinnegar J.K., Tidd A., et al. Do climate and fishing influence size-based indicators of Celtic Sea fish community structure?. ICES J. Mar. Sci. 2005, 62:405-411.
12. Blanchard J.L., Jennings S., Law R., Castle M.D., McCloghrie P., Rochet M.J., et al. How does abundance scale with body size in coupled size-structured food webs?. J. Anim. Ecol. 2009, 78:270-280.
13. Brose U., Cushing L., Banasek-Richter C., Berlow E., Bersier L.F., Blanchard J., et al. Empirical consumer-resource body size ratios. Ecology 2005, 86:2545.
14. Brose U., Jonsson T., Berlow E.L., Warren P., Banasek-Richter C., Bersier L.-F., et al. Consumer-resource body-size relationships in natural food webs. Ecology 2006, 57:2411-2417.
15. Brown J.H., Gillooly J.F., Allen A.P., Savage V.M., West G.B. Toward a metabolic theory of ecology. Ecology 2004, 85:1771-1789.
16. Burgherr P., Meyer E.I. Regression analysis of linear body dimensions vs. dry mass in stream macroinvertebrates. Arch. Hydrobiol. 1997, 139:101-112.
17. Camerano L. Dell' equilibrio dei viventi mercé la reciproca distruzione. Atti della Reale Accademia delle Scienze di Torino 1880, 15:393-414.
18. Cattin M.-F., Bersier L.-F., Banašek-Richter C., Baltensperger R., Gabriel J.-P. Phylogenetic constraints and adaptation explain food-web structure. Nature 2004, 427:835-839.
19. Clark J.S., Bjornstad C.N. Population time series: Process variability, observation errors, missing values, lags, and hidden states. Ecology 2004, 85:3140-3150.
20. Closs G.P., Lake P.S. Spatial and temporal variation in the structure of an intermittent-stream food-web. Ecol. Monogr. 1994, 64:1-21.
21. Cohen J.E. Food Webs and Niche Space 1978, Princeton (now) University Press, Princeton, New Jersey, USA.
22. Cohen J.E., Newman C.M. A stochastic theory of community food webs. I. Models and aggregated data. Proc. R. Soc. Lond. B 1985, 224:421-448.
23. Cohen J.E., Briand F., Newman C.M. Community Food Webs: Data and Theory 1990, Springer-Verlag, New York, USA.
24. Cohen J.E., Beaver R.A., Cousins S.H., DeAngelis D.L., Goldwasser L., Heong K.L., et al. Improving food webs. Ecology 1993, 74:252-258.
25. Cohen J.E., Jonsson T., Carpenter S.R. Ecological community description using the food web, species abundance, and body size. Proc. Natl. Acad. Sci. USA 2003, 100:1781-1786.
26. Cohen J.E., Jonsson T., Muller C.B., Godfray H.C.J., Savage V.M. Body sizes of hosts and parasitoids in individual feeding relationships. Proc. Natl. Acad. Sci. USA 2005, 102:684-689.
27. Csardi G., Nepusz T. The igraph software package for complex network research. InterJournal 1695.
28. Cyr H., Curtis J.M. Zooplankton community size structure and taxonomic composition affects size-selective grazing in natural communities. Oecologia 1999, 118:306-315.
29. Damuth J. Interspecific allometry of population density in mammals and other animals: The independence of body mass and population energy-use. Biol. J. Linn. Soc. 1987, 31:193-246.
30. De Roos A.M., Schellekens T., Van Kooten T., van de Wolfshaar K.E., Claessen D., Persson L. Simplifying a physiologically structured population model to a stage-structured biomass model. Theor. Popul. Biol. 2008, 73:47-62.
31. De Roos A.M., Leonardsson K., Persson L., Mittelbach G.G. Ontogenetic niche shifts and flexible behavior in size-structured populations. Ecol. Monogr. 2002, 72:271-292.
32. de Ruiter P.C., Neutel A.M., Moore J.C. Energetics, patterns of interaction strengths, and stability in real ecosystems. Science 1995, 269:1257-1260.
33. Dunne J. The network structure of food webs. Ecological Networks: Linking Structure to Dynamics in Food Webs 2005, 27-86. Oxford University Press, New York. M. Dunne (Ed.).
34. Dunne J.A., Williams R.J., Martinez N.D. Food-web structure and network theory: The role of connectance and size. Proc. Natl. Acad. Sci. USA 2002, 99:12917-12922.
35. Dunne J.A., Williams R.J., Martinez N.D., Wood R.A., Erwin D.E. Compilation and network analyses of Cambrian food webs. PLoS Biol. 2008, 6:693-708.
36. Edwards F.K., Lauridsen R.B., Duerdoth C.R., Jones J.I. Dry and ash-free dry mass to length relationships of bullhead (Cottus gobio L.). Fundam. Appl. Limnol. 2008, 172:315-316.
37. Edwards F.K., Lauridsen R.B., Armand L., Vincent H.M., Jones J.I. The relationship between length, mass and preservation time for three species of freshwater leeches (Hirudinea). Fundam. Appl. Limnol. 2009, 173:321-327.
38. Edwards F.K., Lauridsen R.B., et al. Re-introduction of Atlantic salmon, Salmo salar L. to the Tadnoll Brook, Dorset. Proc. Dorset Nat. Hist. Archaeol. Soc. 2009, 130:1-8.
39. Elton C.S. Animal Ecology 1927, Sedgewick and Jackson, London.
40. Emlen J.M. The role of time and energy in food preference. Am. Nat. 1966, 100:611-617.
41. Emmerson M., Raffaelli D. Predator-prey body size, interaction strength and the stability of a real food web. J. Anim. Ecol. 2004, 73:399-409.
42. Emmerson M.C., Montoya J.M., Woodward G. Body size, interaction strength and food web dynamics. Dynamic Food Webs: Multispecies Assemblages, Ecosystem Development and Environmental Change 2005, 167-178. Academic Press, New York. P. de Ruiter, V. Wolters, J.C. Moore (Eds.).
43. Figueroa D. Food Web Dynamics: New Patterns from Southern South America and North Wales UK, and the Role of Basal Species Structuring Food Webs 2007, PhD, University of London, London.
44. Ganihar S.R. Biomass estimates of terrestrial arthropods based on body length. J. Biosci. 1997, 22:219-224.
45. Gillooly J., Brown J.H., West G.B., Savage V.M., Charnov E.L. Effects of size and temperature on metabolic rate. Science 2001, 293:2248-2251.
46. Goldwasser L., Roughgarden J. Sampling effects and the estimation of food-web properties. Ecology 1997, 78:41-54.
47. Gonzalez J.M., Basaguren A., et al. Size-mass relationships of stream invertebrates in a northern Spain stream. Hydrobiologia 2002, 489:131-137.
48. Hall S.J., Raffaelli D.G. Food webs-theory and reality. Adv. Ecol. Res. 1993, 24:187-239.
49. Hardy A.C. The Herring in Relation to its Animate Environment, Part 1 1924, Ministry of Agriculture and Fisheries. Fishery Investigations series 2, 7, 3 UK.
50. Hildrew A.G. Sustained research on stream communities: A model system and the comparative approach. Adv. Ecol. Res. 2009, 41:175-312.
51. Hildrew A.G., Townsend C.R. Predators and prey in a patchy environment: A freshwater study. J. Anim. Ecol. 1982, 51:797-815.
52. Hutchinson G.E. Homage to Santa Rosalia or why are there so many kinds of animals?. Am. Nat. 1959, 93:145-159.
53. Ings T.C., Montoya J.M., Bascompte J., Bluthgen N., Brown L., Dormann C.F., et al. Ecological networks-Beyond food webs. J. Anim. Ecol. 2009, 78:253-269.
54. Jennings S.J., Brander K. Predicting the effects of climate change on marine communities and the consequences for fisheries. J. Mar. Syst. 2010, 79:418-426.
55. Jennings S., Warr K.J., Mackinson S. Use of size-based production and stable isotope analyses to predict trophic transfer efficiencies and predator-prey body mass ratios in food webs. Mar. Ecol. Prog. Ser. 2002, 240:11-20.
56. Jonsson T., Cohen J.E., Carpenter S.R. Food webs, body size, and species abundance in ecological community description. Adv. Ecol. Res. 2005, 36:1-84.
57. Kerr S.R., Dickie L.M. The Biomass Spectrum: A Predator-Prey Theory of Aquatic Production 2001, Columbia University Press, New York, 320 pp.
58. Lafferty K.D., Dobson A.P., Kuris A.M. Parasites dominate food web links. Proc. Natl. Acad. Sci. USA 2006, 103:11211-11216.
59. Layer K., Hildrew A.G., Monteith D., Woodward G. Long-term variation in the littoral food web of an acidified mountain lake. Glob. Change Biol. 2010, 16(11):133-299. 3143.
60. Layer K., Riede J.O., Hildrew A.G., Woodward G. Food web structure and stability in 20 streams across a wide pH gradient. Adv. Ecol. Res. 2010, 42:265-299.
61. MacArthur R. Fluctuations of animal populations and a measure of community stability. Ecology 1955, 36:533-536.
62. MacArthur R.H., Pianka E.R. On optimal use of a patchy environment. Am. Nat. 1966, 100:603-609.
63. Martinez N.D. Artifacts of attributes? Effects of resolution on the Little Rock lake food web. Ecol. Monogr. 1991, 61:367-392.
64. Martinez N.D., Hawkins B.A., Dawah H.A., Feifarek B.P. Effects of sampling effort on characterization of food-web structure. Ecology 1999, 80:1044-1055.
65. May R.M. Will a large complex system be stable?. Nature 1972, 238:413-414.
66. May R.M. Stability and complexity in model ecosystems 1973, Princeton Univ. Press, Princeton.
67. McCann K.S. The diversity-stability debate. Nature 2000, 405:228-233.
68. McCann K., Hastings A., Huxel G.R. Weak trophic interactions and the balance of nature. Nature 1998, 395:794-798.
69. McLaughlin O.B., Jonsson T., Emmerson M.C. Temporal variability in predator-prey relationships of a forest floor food web. Adv. Ecol. Res. 2010, 42:171-264.
70. Meyer E. The relationship between body length parameters and dry mass in running water invertebrates. Arch. Hydrobiol. 1989, 117:191-203.
71. Montoya J.M., Pimm S.L., Solé R.V. Ecological networks and their fragility. Nature 2006, 442:259-264.
72. Montoya J.M., Woodward G., Emmerson M.C., Sole R.C. Indirect effects propagate disturbances in real food webs. Ecology 2009, 90:2426-2433.
73. Naeem S. Expanding scales in biodiversity-based research: challenges and solutions for marine systems. Mar. Ecol. Prog. Ser. 2006, 311:273-283.
74. Neutel A.-M., Heesterbeek J.A.P., de Ruiter P.C. Stability in real food webs: Weak links in long loops. Science 2002, 296:1120-1123.
75. Neutel A.M., Heesterbeek J.A.P., van de Koppel J., Hoenderboom G., Vos A., Kaldeway C., et al. Reconciling complexity with stability in naturally assembling food webs. Nature 2007, 449:599-602.
76. O'Gorman E.J., Emmerson M.C. Perturbations to trophic interactions and the stability of complex food webs. Proc. Natl. Acad. Sci. USA 2009, 106:13393-13398.
77. O'Gorman E.J., Emmerson M.C. Manipulating interaction strengths and the consequences for trivariate patterns in a marine food web. Adv. Ecol. Res. 2010, 42:301-419.
78. Olesen J.M., Dupont Y.L., O'Gorman E.J., Ings T.C., Layer K., Melián C.J., et al. From Broadstone to Zackenberg: Space, time and hierarchies in ecological networks. Adv. Ecol. Res. 2010, 42:1-69.
79. Otto S.B., Rall B.C., Brose U. Allometric degree distributions facilitate food-web stability. Nature 2007, 450:1226-1229.
80. Paine R.T. Food webs-Road maps of interactions or grist for theoretical development. Ecology 1988, 69:1648-1654.
81. Paine R.T. Food-web analysis through field measurement of per capita interaction strength. Nature 1992, 355:73-75.
82. Perkins D.M., McKie B.G., Malmqvist B., Gilmour S.G., Reiss J., Woodward G. Environmental warming and biodiversity-ecosystem functioning in freshwater microcosms: partitioning the effects of species identity, richness and metabolism. Adv. Ecol. Res. 2010, 43:177-209.
83. Persson L., Leonardsson K., de Roos A.M., Gyllenberg M., Christensen B. Ontogenetic scaling of foraging rates and the dynamics of a size-structured consumer-resource model. Theor. Popul. Biol. 1998, 54:270-293.
84. Petchey O.L., Belgrano A. Body-size distributions and size-spectra: universal indicators of ecological status?. Biol. Lett. 2010, 6:434-437.
85. Petchey O.L., Beckerman A.P., Warren P.H. Size, foraging, and food web structure. Proc. Natl. Acad. Sci. USA 2008, 105:4191-4196.
86. Petchey O.L., Downing A.L., Mittelbach G.G., Persson L., Steiner C.F., Warren P.H., Woodward G. Species loss and the structure and functioning of multitrophic aquatic ecosystems. Oikos 2004, 104:467-478.
87. Peters R.H. The Ecological Implications of Body Size 1983, 24-44. Cambridge University Press, Cambridge, UK. E. Beck, H.J.B. Birks, E.F. Connor (Eds.).
88. Pimm S.L. Food web design and the effects of species deletion. Oikos 1980, 35:139-149.
89. Pimm S.L. Food Webs 1982, The University of Chicago Press, Chicago.
90. Pinnegar J.K., Trenkel V.M., Tidd A.N., Dawson W.A., Du Buit M.H. Does diet in Celtic Sea fishes reflect prey availability?. J. Fish Biol. 2003, 63:197-212.
91. Polis G.A. Complex trophic interactions in deserts: An emprirical critique of food web theory. Am. Nat. 1991, 138:123-155.
92. Polis G.A. Stability is woven by complex webs. Nature 1998, 395:744-745.
93. Pope J.G., Shepherd J.G., Webb J. Successful surf-riding on size spectra: The secret of survival in the sea. Phil. Trans. Roy. Soc. B. 1994, 343:41-49.
94. Prentice E.F., Flagg T.A., McCutcheon S. Feasibility of using implantable passive integrated transponder (PIT) tags in salmonids. American Fisheries Society Symposium, Vol. 7, 1990, 317-322. N.C. Parker, A.E. Giorgi, R.C. Heidinger, D.B. Jester, E.D. Prince, G.A. Winans (Eds.).
95. Raffaelli D. Food webs, body size and the curse of the latin binomial. From Energetics to Ecosystems: The Dynamics and Structure of Ecological Systems 2007, 53-64. Springer, Netherlands. N. Rooney, K.S. McCann, D.L.G. Noakes (Eds.).
96. Reiss J., Bridle J.R., Montoya J.M., Woodward G. Emerging horizons in biodiversity and ecosystem functioning research. Trends Ecol. Evol. 2009, 24:505-514.
97. Reiss J., Bailey R.A., Cássio F., Woodward G., Pascoal C. Assessing the contribution of micro-organisms and macrofauna to biodiversity-ecosystem functioning relationships in freshwater microcosms. Adv. Ecol. Res. 2010, 43:151-176.
98. Reuman D.C., Cohen J.E. Estimating relative energy fluxes using the food web, species abundance, and body size. Adv. Ecol. Res. 2005, 36:137-182. Elsevier Academic Press Inc, San Diego.
99. Reuman D.C., Mulder C., Raffaelli D., Cohen J.E. Three allometric relations of population density to body mass: Theoretical integration and empirical tests in 149 food webs. Ecol. Lett. 2008, 11:1216-1228.
100. Reuman D.C., Mulder C., Banašek-Richter C., Cattin Blandenier M.-F., Breure A.M., Den Hollander H.A., et al. Allometry of body size and abundance in 166 food webs. Adv. Ecol. Res. 2009, 41:1-44.
101. Reuman D.C., Cohen J.E., Mulder C. Human and environmental factors influence soil food webs' abundance-mass allometry and structure. Adv. Ecol. Res. 2009, 41:45-85.
102. Riede J.O., Rall B.C., Banasek-Richter C., Navarrete S.A., Wieters E.A., Brose U. Scaling of food-web properties with diversity and complexity across ecosystems. Adv. Ecol. Res. 2010, 42:139-170.
103. Rohr R.P., Scherer H., Kehrli P., Mazza C., Bersier L.-F. Modeling food webs: Exploring unexplained structure using latent traits. Am. Nat. 2010, 176:170-177.
104. Rooney N., McCann K., Gellner G., Moore J.C. Structural asymmetry and the stability of diverse food webs. Nature 2006, 442:265-269.
105. Sabo J.L., Bastow J.L., et al. Length-mass relationships for adult aquatic and terrestrial invertebrates in a California watershed. J. North Am. Benthol. Soc. 2002, 21:336-343.
106. Schmid-Araya J.M., Hildrew A.G., Robertson A., Schmid P.E., Winterbottom J. The importance of meiofauna in food webs: Evidence from an acid stream. Ecology 2002, 83:1271-1285.
107. Schmid-Araya J.M., Schmid P.E., Robertson A., Winterbottom J.H., Gjerløv C., Hildrew A.G. Connectance in stream food webs. J. Anim. Ecol. 2002, 71:1062.
108. Seber G.A.F., LeCren E.D. Estimating population parameters from catches large to the relative population. J. Anim. Ecol. 1967, 36:631-643.
109. Smock L.A. Relationships between body size and biomass of aquatic insects. Freshw. Biol. 1980, 10:375-383.
110. Stang M., Klinkhamer P.G.L., van der Meijden E. Size constraints and flower abundance determine the number of interactions in a plant-flower visitor web. Oikos 2006, 112:111-121.
111. Stang M., Klinkhamer P.G.L., Waser N.M., Stang I., van der Mejden E. Size-specific interaction patterns and size matching in a plant-pollinator interaction web. Ann. Bot. Lond. 2009, 103:1459-1469.
112. Stenseth N.C., Rouyer T. Ecology: Destabilized fish stocks. Nature 2008, 452:825-826.
113. Stouffer D.B. Scaling from individuals to networks in food webs. Funct. Ecol. 2010, 24(1):44-51.
114. Stouffer D.B., Camacho J., Amaral L.A.N. A robust measure of food web intervality. Proc. Natl. Acad. Sci. USA 2006, 103:19015-19020.
115. Tanabe K., Namba T. Omnivory creates chaos in simple food web models. Ecology 2005, 86:3411-3414.
116. Townsend C.R., Hildrew A.G. Predation strategy and resource utilization by Plectrocnemia conspersa (Curtis) (Trichoptera: Polycentropodidae). Proceedings of the 2nd International Symposium on Trichoptera 1977, Junk, The Hague.
117. Townsend C.R., Hildrew A.G. Resource partitioning by two freshwater invertebrate predators with contrasting foraging strategies. J. Anim. Ecol. 1979, 48:909-920.
118. Tylianakis J.M., Tscharntke T., Lewis O.T. Habitat modification alters the structure of tropical host-parasitoid food webs. Nature 2007, 445:202-205.
119. van Veen F.J.F., Muller C.B., Pell J.K., Godfray H.C.J. Food web structure of three guilds of natural enemies: Predators, parasitoids and pathogens of aphids. J. Anim. Ecol. 2008, 77:191-200.
120. Vandermeer J. Omnivory and the stability of food webs. J. Theor. Biol. 2006, 238:497-504.
121. Warnes S., Jones B.W. Species Distributions from English Celtic Sea Groundfish Surveys, 1984 to 1991 1995, MAFF Directorate of Fisheries Research, Lowestoft, Report 98.
122. Warren P.H. Spatial and temporal variation in the structure of a freshwater food web. Oikos 1989, 55:299-311.
123. Warren P.H. Structural constraints on food web assembly. Aspects of the Genesis and Maintenance of Biological Diversity 1996, 142-161. Oxford University Press, Oxford, U.K. M.E. Hochberg, J. Clobert, R. Barbault (Eds.).
124. Williams R.J., Martinez N.D. Simple rules yield complex food webs. Nature 2000, 404:180-183.
125. Woodward G. Biodiversity, ecosystem functioning and food webs in fresh waters: Assembling the jigsaw puzzle. Freshw. Biol. 2009, 54:2171-2187.
126. Woodward G., Hildrew A.G. Invasion of a stream food web by a new top predator. J. Anim. Ecol. 2001, 70:273-288.
127. Woodward G., Hildrew A.G. Differential vulnerability of prey to an invading top predator: Integrating field surveys and laboratory experiments. Ecol. Entomol. 2002, 27:732-744.
128. Woodward G., Hildrew A.G. Body-size determinants of niche overlap and intraguild predation within a complex food web. J. Anim. Ecol. 2002, 71:1063-1074.
129. Woodward G., Warren P.H. Body size and predatory interactions in freshwaters: Scaling from individuals to communities. Body size: The Structure and Function of Aquatic Ecosystems 2007, 98-117. Cambridge University Press. A.G. Hildrew, D. Raffaelli, R. Edmonds-Brown (Eds.).
130. Woodward G., Speirs D.C., Hildrew A.G. Quantification and resolution of a complex, size-structured food web. Adv. Ecol. Res. 2005, 36:85-135.
131. Woodward G., Ebenman B., Emmerson M., Montoya J.M., Olesen J.M., Valido A., et al. Body-size in ecological networks. Trends Ecol. Evol. 2005, 20:402-409.
132. Woodward G., Papantoniou G., Edwards F., Lauridsen R.B. Trophic trickles and cascades in a complex food web: Impacts of a keystone predator on stream community structure and ecosystem processes. Oikos 2008, 117:683-692.
133. Woodward G., Benstead J.P., Beveridge O.S., Blanchard J., Brey T., Brown L., et al. Ecological networks in a changing climate. Adv. Ecol. Res. 2010, 42:71-138.
134. Yodzis P., Innes S. Body size and consumer-resource dynamics. Am. Nat. 1992, 139:1151-1175.
135. Yvon-Durocher G., Montoya J.M., Emmerson M.C., Woodward G. Macroecological patterns and niche structure in a new marine food web. Cent. Eur. J. Biol. 2008, 3:91-103.
136. Yvon-Durocher G., Reiss J., Blanchard J., Ebenman B., Perkins D.M., Reuman D.C., et al. Across ecosystem comparisons of size structure: Methods, approaches, and prospects. Oikos 2010, (in press).