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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 ...
Fossil shark spines found in Michigan are usually the remains of ctenacanths and cladodonts. Bradyodont shark teeth have also been discovered in Michigan, however, it's also possible that these teeth were shed by animals more closely related to holocephalans than true sharks. [6] Tabulate and tetra- corals disappeared from Michigan during the ...
In July 1903, the taxidermist Norman Asa Wood was presented with a specimen by a student at the University of Michigan, and promptly travelled to the area it was killed, where he found the first nest ever recorded for the species near the banks of the Au Sable River. He also found a second nest; both nests had chicks and one held a single ...
This list of the prehistoric life of Michigan contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Michigan. Precambrian [ edit ]
A Petoskey stone is a rock and a fossil, often pebble-shaped, that is composed of a fossilized rugose coral, Hexagonaria percarinata. [1] Such stones were formed as a result of glaciation, in which sheets of ice plucked stones from the bedrock, grinding off their rough edges and depositing them in the northwestern (and some in the northeastern) portion of Michigan's lower peninsula.
Threatened Lake Michigan: [64] Several times a year, visitors and a ranger at the Dorothy Buell Memorial Visitor Center can explore some of the greatest threats facing Lake Michigan. From 1:00 to 2:00 pm, visitors learn about the spiny water flea, round goby and zebra mussel, their impacts on Lake Michigan and how to thwart invasive species.
This list of the Paleozoic life of Michigan contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Michigan and are between 538.8 and 252.17 million years of age.
Beachgrass is a dominant species on foredunes, and is sometimes the only plant found there, but is unable to grow farther inland on stabilized dunes and soil. One reason for this that has been extensively studied by Wim van der Putten and his colleagues is based on the susceptibility of Ammophila species to soil pathogens such as nematodes.