Download Atlas of Plants and Animals in Baltic Amber by Wolfgang; Wichard, Wilfried Weitschat PDF

By Wolfgang; Wichard, Wilfried Weitschat

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Phragmites (Phragmites communis), also called common reed, threatened to evict native birds until the staff tackled the tedious chore of pulling it out by hand. Phragmites’ country of origin is unclear. It may actually be from the United States. Scientists have been able to find evidence that phragmites has been present in North American wetlands for 3,000 years, yet this plant has definitely been invading wetlands much more aggressively in recent years. Some scientists believe that the increased spread is due to phragmites’ breeding with similar European wetland plants, creating a hardier hybrid.

Although phragmites may be native, it is still considered an invasive plant. It spreads quickly by underground stems or rhizomes. Reaching nearly 10 feet (3 meters) in height, this invasive provides little value to wildlife. In addition, its dense growth inhibits light from reaching the ground and therefore prevents other plants from growing. Although phragmites is still present, manageable levels prevent the devastating effects of complete native vegetation loss. The plants in these wetlands provide a source of food and habitat for fish.

If they didn’t, plant species would be localized to one small section of the Earth. Possessing the ability to be transported around the globe presents the possibility of ending up in places never intended by nature. What makes some aquatic and Wetland Plants Invasive? 1 The predator-prey relationship keeps populations in control. Invasive species lack predators, and this enables them to keep expanding their populations. In this photograph, an insect (prey) rests on the jaw-like leaf of a Venus flytrap (predator).

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