Nutrient Cycles - Lecture Notes PDF

1 2 3 4 5 6 7 Began in a farmer’s cornfield After 8 years: 424m cone Two nearby towns obliterated All vegetation in surrounding area destroyed, mostly by falling ash Forests grew rapidly on ash deposits By 1970: eight conifer species established...

1 2 3 4 5 6 7 Began in a farmer’s cornfield After 8 years: 424m cone Two nearby towns obliterated All vegetation in surrounding area destroyed, mostly by falling ash Forests grew rapidly on ash deposits By 1970: eight conifer species established 8 9 The island of Java, in Indonesia, is the world’s most populous island with nearly 150,000,000 people 10% of the world’s population lives within 100 kilometres of an active volcano. 10 11 12 13 14 15 16 17 18 19 20 21 22 Legumes are one of the largest plant families – over 16,000 species Include herbaceous plants and trees 23 24 25 RGR = g new growth / g existing tissue / unit time Similar to r in models of population growth 26 RGR = g new growth / g existing tissue / unit time 27 28 29 30 31 32 33 34 Lesser snow goose 35 Allochthonous: introduced from outside, i.e., from a different environment, habitat, or geographical area. Fertilizer inputs in wintering areas  increased numbers  increased pressure on vegetation in breeding areas (e.g. La Perouse Bay) 36 37 38 Salinization: lack of vegetation cover  evaporation  salt deposits on surface 39 40 Answer: c) 41 42 Answer: d) 43 44