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The term pioneer species is also used to refer to the first species, usually plants, to return to an area after disturbance as part of the process of secondary succession. Disturbances may include floods, tornadoes, forest fires, deforestation, or clearing by other means. [18] Pioneer species tend to be fast-growing, shade-intolerant, and tend ...
Primary succession is the beginning step of ecological succession where species known as pioneer species colonize an uninhabited site, which usually occurs in an environment devoid of vegetation and other organisms. In contrast, secondary succession occurs on substrates that previously supported vegetation before an ecological disturbance. This ...
McKay Creek National Wildlife Refuge, dam and reservoir are named for Dr. William C. McKay, an early pioneer in the Pendleton, Oregon, area. McKay settled near the mouth of McKay Creek in about 1851. The location was known to natives as Houtama. McKay died in 1893. [3]
The stages of primary succession include pioneer species such as microorganisms, [29] plants (lichens and mosses), grasses, smaller shrubs, and trees. Small animals move into the area when enough suitable habitat has been established. When it is a fully functioning ecosystem, it has reached the climax community stage. [30]
These, in essence, were the pioneer species. Once these began to die it provided organic matter to the lake bed sediment and therefore increased fertility and reduced depth. As a result, this allowed deeper rooted species to develop such as reed, bulrush and reedmace. At this point there is a growing floating raft of thick organic matter within ...
Crump Lake provides a unique habitat for plants and animals. The main cliff face of Hart Mountain ends near the north end of the lake, providing a rim rock habitat in that area. The area along the lake's eastern shore is typical high desert scrubland dominated by big sagebrush. The areas to the south and west of the lake are mostly mashes ...
The Snake River fine-spotted cutthroat trout (Oncorhynchus clarki sp.) is one of three subspecies of cutthroat trout found in Yellowstone. As its name suggests, this species is found in the Snake River drainages of the park. Some fisheries scientists consider the Snake River subspecies the same as the Yellowstone subspecies.
In the aftermath of a forest fire, pioneer organisms are among the first to colonize the area; visible at the right are pioneer plants which have begun growing in an area charred by fire. A pioneer organism, also called a disaster taxon, is an organism that colonizes a previously empty area first, or one that repopulates vacant niches after a ...