FOR201H1 Lecture Notes - Lecture 6: Evapotranspiration, Primary Production, General Idea
Document Summary
For210h1: lecture 6 - ecological interactions in the rainforest, tropical flowering and. Orchids and figs are classic examples of 1:1 plant-pollinator relationships. Many bee species are specialized to pollinate orchids. There"s an old generalisation that rainforests are defined by specialists. There tend to be more diffused interactions. Specialists are rare in conjunction with extreme biotic pressures. Nontropical regions tend to have more specialists. Outcrossing: is the introduction of unrelated genetic material into a breeding line. Outcrossing is thought to be critical to maintain high genetic diversity in face of biological enemies. Aspen is the most widespread tree in north america. Clonal reproduction is common in temperate and boreal forests. Importance of biotic interactions are expected to select against clonal reproduction in tropics. Almost all tropical plants require some form of pollination. Large pale flowers that open at night. Varied as they"re the most important pollinators, often colorful, bilaterally symmetrical like orchids. Long, tubular, high nectar, open at night.
