Many species of epiphytes are more abundant in the lower canopy, where they are protected from the drying effects of direct sunlight. Higher up, in the crowns of trees, where humidity varies very sharply throughout the day, drought—resistant epiphytes and another group of canopy plants, semi-epiphytes, are more common. Semi-epiphytes begin their life cycle as epiphytes — they germinate from seeds trapped in the cracks of the bark and in the forks of the branches. Later, they release aerial roots that grow all the way to the ground, thus obtaining a permanent source of moisture. The abundance of nutrients that semilyphites absorb from the soil makes it possible for them to reach much larger sizes than epiphytes, and the total weight of foliage and a bundle of roots of one plant is sometimes so great that the branch supporting it breaks.
Some plants of this group from the genera Clusia and Ficus, such as the so-called strangler ficus, cause other harm to their host trees: their roots, like snakes, wrap around the trunk and form anastomoses, i.e. in places merge with each other into a strong shell, inside which the tree eventually dies and rots. By this time, the roots of the parasite become strong enough to support it as an independent tree, which as a result occupies the space in the canopy that was freed from its former host. It is generally accepted that strangling plants kill the victim tree by squeezing its tissues. However, scientists have recently suggested that these species are more likely to successfully compete with their hosts for light and develop foliage so powerfully that it completely obscures the phorophyte tree, which leads to its death.
The last group of plants characteristic of the arboreal canopy of the rain forest are climbing species; these include herbaceous lianas, such as philodendron, whose stems contain little lignified material, and woody lianas. These species germinate on the forest floor and then grow upwards. As in the case of semi-epiphytes and "mats" of epiphytes, tree branches sometimes break from their weight. There are cases when whole trees fell down and "windows" formed in the forest canopy.
Such windows play an important role in the life of the forest. Many tree species can develop only in conditions of good lighting, and their renewal occurs only due to accidental violations of the canopy closure. By contributing to the formation of windows, plants that settle on trees indirectly participate in maintaining the diversity of tropical forest flora. Play at Cocoa casino and explore games.
Some plants of this group from the genera Clusia and Ficus, such as the so-called strangler ficus, cause other harm to their host trees: their roots, like snakes, wrap around the trunk and form anastomoses, i.e. in places merge with each other into a strong shell, inside which the tree eventually dies and rots. By this time, the roots of the parasite become strong enough to support it as an independent tree, which as a result occupies the space in the canopy that was freed from its former host. It is generally accepted that strangling plants kill the victim tree by squeezing its tissues. However, scientists have recently suggested that these species are more likely to successfully compete with their hosts for light and develop foliage so powerfully that it completely obscures the phorophyte tree, which leads to its death.
The last group of plants characteristic of the arboreal canopy of the rain forest are climbing species; these include herbaceous lianas, such as philodendron, whose stems contain little lignified material, and woody lianas. These species germinate on the forest floor and then grow upwards. As in the case of semi-epiphytes and "mats" of epiphytes, tree branches sometimes break from their weight. There are cases when whole trees fell down and "windows" formed in the forest canopy.
Such windows play an important role in the life of the forest. Many tree species can develop only in conditions of good lighting, and their renewal occurs only due to accidental violations of the canopy closure. By contributing to the formation of windows, plants that settle on trees indirectly participate in maintaining the diversity of tropical forest flora. Play at Cocoa casino and explore games.