| Chinook Risk of Extinction | |
|
Data format: SDE Table File or table name: sos.DBO.risk_chin Theme keywords: Risk of Extinction, Stock Status |
|
|
Abstract:
In our database, there are three main variables that describe stock status: percent of stocks at low risk of extinction, percent of stocks at moderate risk, and percent at high risk. It is difficult to present these three variables on a two-dimentional surface, such as a web map. For display purposes, we have assigned a relative level of risk to each ecoregion based on a variety of factors. A relative risk was assigned to each stock by whichever percentage(low, moderate, high) contained a plurality.
If the risk was split equally between two sequential gradations, (i.e. percent low and percent moderate risk were equal), other factors, such as total number of species extinct in that ecoregion, and estimated abundance, were taken into account.
We encourage you to explore the background data to get a better sense of the health of these stocks. |
|
Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
In our database, there are three main variables that describe stock status: percent of stocks at low risk of extinction, percent of stocks at moderate risk, and percent at high risk. It is difficult to present these three variables on a two-dimentional surface, such as a web map. For display purposes, we have assigned a relative level of risk to each ecoregion based on a variety of factors. A relative risk was assigned to each stock by whichever percentage(low, moderate, high) contained a plurality. If the risk was split equally between two sequential gradations, (i.e. percent low and percent moderate risk were equal), other factors, such as total number of species extinct in that ecoregion, and estimated abundance, were taken into account. We encourage you to explore the background data to get a better sense of the health of these stocks.
This dataset was developed to represent the data and analysis for risk of extinction that appear in the Atlas of Pacific Salmon: The First Map-Based Status Assessment of Salmon in the North Pacific. (2005) This information was developed explicitly for the two dimensional web interface.
Ground Condition
State of the Salmon makes no express or implied warrantees with respect to the character, fitness, or accuracy of the information presented, or their appropriateness for any users purposes.
Internal feature number.
ESRI
721 NW 9th Avenue, Suite 280
Although substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy cannot be guaranteed. All data are made available "as is". The State of the Salmon Consortium, Ecotrust, and Wild Salmon Center shall not be liable for any damages resulting from use or interpretation of data sets.