Essentials of Ecology

I6 INDEX Nile perch in Lake Victoria, 249, 253, 272 Nitrogen cycle, 68 –70, 69f Nitrogen fi xation, 68 Nitrogen-fi xing bacteria ...

INDEX I7 Royal Society for Protection of Birds, 262 r-selected species, 112, 112 f Runoff, 176 Sacramento Valley, 266b Safi na, ...

I8 INDEX Threshold level, 46 Throughputs (fl ows), in systems, 44 Tides, 168 Tilman, David, 91 Timber and wood trade, 220, 228b, ...