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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. “Biological Flora of the British Isles,” 146 “The Biology of Weeds,” 11, 146 Biotic forces, general, 2, 5-8, 11, 21, 54-66, 78- 94 (passim) see also Biological control; Competition; Demographics; Genetics; Evolution; Natural enemies host availability, 5, 7, 53, 54, 55-59, 76, 99, 102, 123, 128 host distribution, 5, 55-59, 122, 128, 129, 131 host specificity, 5, 7, 12, 36, 76, 80, 92, 129, 147-148 vectors, 5, 20, 54, 62, 65-66, 76, 148 Brazil, 110 Brazilian pepper tree, 101 Bromus tectorum, 88-89, 102, 103, 107 Buffelgrass, 104 C Cactoblastis cactorum, 108 Canada, 51, 53, 90, 114-115, 117, 136-137 Canadian Journal of Plant Science, 11, 146 Centaurea solstitialis, 102 Cheatgrass, 88-89, 102, 103, 107 Chestnut blight fungus, 1, 14, 61, 101, 102, 105-106, 110 Chile, 113 China, 4, 37-38, 34-36, 37-38, 39, 57-58 Climate and weather, 5, 21, 41, 52-53, 54, 75- 76, 112 matching, 8, 113-115, 128, 129, 131, 134, 136, 138-139 Coccinella septempunctata, 108 Community structure, 13, 48-50, 59, 93-94, 101-102, 106-109, 110, 147 biodiversity, 6-7, 59, 85-89, 94, 100, 102- 103; see also Competition Competition, 5, 6, 7, 16, 41, 62-66, 76, 86-89, 94, 96, 103, 126 exploitation, 62-63 individual effects, 98 interference, 62 isolated habitat, 96 models, 97 Compsilura concinnata, 108 Computer applications see also Databases; Internet climate simulations, 8, 113-115 Cordgrass, 98 Cost factors damage by/control of invasive species, 1, 2, 15, 95 field studies, 125 Cronartium ribicola, 53-54 Crypohonectria parasitica, see Chestnut blight fungus Cryptococcus fagisuga, 106, 148 D see also Internet Federal noxious weed and seed lists, 28, 144, 149-150 Port Information Network, 4, 10, 32-37, 39, 143-144 U.S. Geological Survey, 146 Demographics, general, 4, 12, 44, 52, 74, 75, 78-79, 82, 97-98, 122, 124, 149 see also Dispersal; Reproductive factors; Spatial distribution extinction, 42, 44-45, 73-74, 84, 100, 149 founder populations, 41, 45, 50, 51, 53, 67, 72, 73-75 (passim), 89, 122, 149 individual effects, 98 minimum viable population, 42, 43, 82 Department of Agriculture, 2, 126, 143, 145- 151 see also Animal and Plant Health Inspection Service Desert ecosystems, see Arid ecosystems Dispersal, 6, 12, 19, 21, 59, 80-85, 93-94, 97, 116, 123, 129, 131, 147-148 fruit and fruiting, 6, 7, 68-69, 93-94, 97 genetic factors, 100 gradients, 81 models of, 83-84
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