Difference between revisions of "Steelhead"
(New page: ==Steelhead Life History== [[Image:2salmonhistory.jpeg|thumb|270px|right|Life cycle of Salmon and Steelhead <ref name="UCDavis">[http://sns.ucdavis.edu/index.php/salmon_and_steelhead_life...) |
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Steelhead (''Oncorhynchus mykiss'') in the Monterey Bay Region are listed as "Threatened" under the Endangered Species Act (ESA) and occupy many rivers and streams flowing into the Monterey Bay. ''O. mykiss'' are distinct among salmonid species because the are both facultativly anadromous and iteroparous. Anadromous fish are those that spend most of their life in the ocean and spawn in freshwater. Iteroparous fish are that can reproduce multiple times in their life. ''O. mykiss'' also have populations which reside in freshwater and are called rainbow trout. <ref name="Satt"> Satterthwaite WH, Beaks MP, Collins EM, Swank DR, Merz JE, Titus RG, Sogard SM, Mangel M. 2009. Steelhead life history on California's Central Coast: insights from a state-dependent model. Transactions of the American Fisheries Society 138:532-548. </ref>. The photo to the right represents the life cycle of salmon and steelhead. | Steelhead (''Oncorhynchus mykiss'') in the Monterey Bay Region are listed as "Threatened" under the Endangered Species Act (ESA) and occupy many rivers and streams flowing into the Monterey Bay. ''O. mykiss'' are distinct among salmonid species because the are both facultativly anadromous and iteroparous. Anadromous fish are those that spend most of their life in the ocean and spawn in freshwater. Iteroparous fish are that can reproduce multiple times in their life. ''O. mykiss'' also have populations which reside in freshwater and are called rainbow trout. <ref name="Satt"> Satterthwaite WH, Beaks MP, Collins EM, Swank DR, Merz JE, Titus RG, Sogard SM, Mangel M. 2009. Steelhead life history on California's Central Coast: insights from a state-dependent model. Transactions of the American Fisheries Society 138:532-548. </ref>. The photo to the right represents the life cycle of salmon and steelhead. | ||
| + | ==Critical Habitat== | ||
| + | |||
| + | A "critical habitat" must be designated for species listed under the ESA. A critical habitat is an area that is essential habitat for the existence of a species. Areas designated as critical habitat are subjected to increased regulations to limit degradation of the health of the environment. This helps to ensure that the species listed under the ESA is not heavily impacted by changes made within their habitat. <ref>U.S. Fish & Wildlife Service. Critical Habitat; what is it? http://www.fs.fed.us/r9/wildlife/tes/docs/esa_references/critical_habitat.pdf </ref> | ||
== Disclaimer == | == Disclaimer == | ||
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students. | This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of [[CSUMB]], its staff, or students. | ||
Revision as of 11:30, 11 April 2012
Steelhead Life History
Steelhead (Oncorhynchus mykiss) in the Monterey Bay Region are listed as "Threatened" under the Endangered Species Act (ESA) and occupy many rivers and streams flowing into the Monterey Bay. O. mykiss are distinct among salmonid species because the are both facultativly anadromous and iteroparous. Anadromous fish are those that spend most of their life in the ocean and spawn in freshwater. Iteroparous fish are that can reproduce multiple times in their life. O. mykiss also have populations which reside in freshwater and are called rainbow trout. [2]. The photo to the right represents the life cycle of salmon and steelhead.
Critical Habitat
A "critical habitat" must be designated for species listed under the ESA. A critical habitat is an area that is essential habitat for the existence of a species. Areas designated as critical habitat are subjected to increased regulations to limit degradation of the health of the environment. This helps to ensure that the species listed under the ESA is not heavily impacted by changes made within their habitat. [3]
Disclaimer
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of CSUMB, its staff, or students.
Cite error: <ref> tags exist, but no <references/> tag was found
