R

Rana pipiens, 239 Reaction wood, 17

Reconfiguration, flexible organisms and, 64

Reference network, hydraulic conductance, 89

Reproductive isolation, 303

Resistance, definition of, 107

Resource polymorphisms, 309

Rhingia campestris, 188

Rhodnius prolixus, 195

Ring-porous angiosperms, 92

Root(s)

anchorage, 10

difficulty of investigating, 11 efficiency, root architecture and, 12 nutrient uptake and, 21 fine, 11

growth, control of, 21 reinforcement, 10

system architecture, modifications in, 13 tensile strength, 10 topology, 12 Rosa, 45, 54 Rosa canina, 48 Roscoea purpurea, 125 Ruminant(s)

body mass of, 116

digestion, properties determining, 105 harvesting apparatus, 102 jaw configuration, 102 tooth wear, 113 Rumination, 102

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