Difference between revisions of "ECOSYSTEM"
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− | <p class=MsoNormal>[[Image:Ecosystem- FP-PIC.jpg| | + | <p class=MsoNormal>[[Image:Ecosystem- FP-PIC.jpg|450px|left]]</p> |
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2016 | 2016 | ||
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR04_Mueller.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR04_Mueller.pdf Linkages between controlled floods, eddy sandbar dynamics, and riparian vegetation along the Colorado River in Marble Canyon, Arizona, USA] |
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR05_Sankey.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR05_Sankey.pdf Riparian vegetation monitoring with remote sensing] |
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR06_Bulletts.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR06_Bulletts.pdf Southern Paiute Consortium Vegetation and Cultural Resource Monitoring Program] |
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR08_Fairley.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR08_Fairley.pdf Historical Changes to Culturally-Important Riparian Plants along the Colorado River: A Progress Report on Project 12] |
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR09_Ralston.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR09_Ralston.pdf Report of Riparian Vegetation Workshop, June 23-25, 2015 in Flagstaff, AZ] |
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR10_Stevens.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR10_Stevens.pdf The Biogeographic Significance of a Large, Deep Canyon: Grand Canyon, Southwestern USA] |
− | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR11_Anderson.pdf | + | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/16jan26/documents/AR11_Anderson.pdf Ecosystem Monitoring in Glen Canyon National Recreation Area] |
2015 | 2015 | ||
− | *[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/15feb25/Attach_12.pdf | + | *[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/15feb25/Attach_12.pdf The Stakeholder's Perspective - The National Parks Conservation Association] |
− | *[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/15feb25/Attach_11.pdf | + | *[http://www.usbr.gov/uc/rm/amp/amwg/mtgs/15feb25/Attach_11.pdf Lower Colorado River Multi-Species Conservation Program Update] |
− | *[https://drive.google.com/file/d/0BwY-Z2c3NTUGTi1pSkhCWGJjWkk/view?usp=drive_web | + | *[https://drive.google.com/file/d/0BwY-Z2c3NTUGTi1pSkhCWGJjWkk/view?usp=drive_web Collaborative Riparian Restoration in Glen Canyon NRA at Leopard Frog Marsh] |
− | * | + | *[[Media:USGS State of the CR ecosystem in the Grand Canyon- c1282.PDF | USGS State of the Colorado River Ecosystem in the Grand Canyon- c1282]] |
+ | |||
+ | 2014 | ||
+ | *[http://www.usbr.gov/uc/rm/amp/twg/mtgs/14oct28/Attach_04.pdf Report on Ten Years of Implementing the Lower Colorado Multi-Species Conservation Program (MSCP)] | ||
2012 | 2012 |
Revision as of 16:11, 23 June 2016
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An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system. These biotic and abiotic components are regarded as linked together through nutrient cycles and energy flows. As ecosystems are defined by the network of interactions among organisms, and between organisms and their environment, they can be of any size but usually encompass specific, limited spaces (although some scientists say that the entire planet is an ecosystem). Ecosystems are controlled both by external and internal factors. External factors such as climate, the parent material that forms the soil, and topography control the overall structure of an ecosystem and the way things work within it, but are not themselves influenced by the ecosystem. Other external factors include time and potential biota. Ecosystems are dynamic entities—invariably, they are subject to periodic disturbances and are in the process of recovering from some past disturbance. Ecosystems in similar environments that are located in different parts of the world can have very different characteristics simply because they contain different species. The introduction of non-native species can cause substantial shifts in ecosystem function. Internal factors not only control ecosystem processes but are also controlled by them and are often subject to feedback loops. While the resource inputs are generally controlled by external processes like climate and parent material, the availability of these resources within the ecosystem is controlled by internal factors like decomposition, root competition or shading. Other internal factors include disturbance, succession and the types of species present. Biodiversity affects ecosystem function, as do the processes of disturbance and succession. Ecosystems provide a variety of goods and services upon which people depend; the principles of ecosystem management suggest that rather than managing individual species, natural resources should be managed at the level of the ecosystem itself. Classifying ecosystems into ecologically homogeneous units is an important step towards effective ecosystem management, but there is no single, agreed-upon way to do this. |
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