Ecology: Population Dynamics and Factors Affecting Growth, Slides of Biology

Download Ecology: Population Dynamics and Factors Affecting Growth and more Slides Biology in PDF only on Docsity! Ecology Docsity.com Population Concept Factor affecting population growth Growth curve Survivorshio curves Age pyramids Docsity.com S-shaped Curve Po pu lat ion Time Lag Log Stationary Docsity.com J- shaped Curve (algae) Po pu lat ion Time Nutrient added Nutrient Used up Docsity.com Survivorship Curve Po pu lat ion Life span Fish, crab Most animal, plant Man, large animal Docsity.com Control of population • Legistration • Education • Medical method – Physical Barrier – Contraceptive pill – operation Docsity.com Ecosystem Concept Habitat Population Community Ecosystem Niche Biome Biosphere Docsity.com Habitat \] EP NACI WANN . {WANA MC Docsity.com Wie oe ¥ Ji, 800m Oy Wie , re Kk 7k ¥ Other Niche = Role of that organism Each organism has specific niche. No two organisms have same niche. Biome = abiotic + biotic factors + Climate Biosphere = all in the earth Docsity.com Fo od W eb Food Chain Docsity.com Water cycle Courtesy Erich Roeckner, Max Planck Institute for Meteorology Docsity.com Interdependence of organisms » Predation Competition Commensalism ~~ Mutualism ». Parasitism Docsity.com Predation 60 2000 1800 a ao 1600 a : w = 40} 1400 ¥ 3 1200 2 ‘S 30 1000°5 g 4800 @ 2 2 E 20 “6 2 3 10} 40 1\} 20 DiS ee J & 71955 1960 1965 1970 1975 1980 1985 1990 1995 wear rune Docsity.com number Mutualism symbionts Symbionts Time Docsity.com number Parasitism Host Parasite Time Docsity.com Succession Ecological succession is process by which communities in the ecosystem change with time. For forest succession: Lichen community Algae and mosses Herbs Shrubs Trees Docsity.com