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Resto eco Mid-term
Practice for the Restoration Ecology Mid-Term examination at fleming college
| Question | Answer |
|---|---|
| Boundaries are defined by: | Humans not nature |
| All systems interact with: | One another |
| _________________ is a practice; the process of implementing restoration plans. | ecosystem restoration |
| _________________ is the science; how we put the process into practice. | Restoration Ecology |
| Predicted future state Monitor ecosystem to see if restoration plan follow certain trajectories Miniature/report progress | Trajectories |
| Reliable/intact ecosystem whose composition has all species that were ever there 100% integrity is not possible since there is little chance of finding an ecosystem with all of its original species | Ecological integrity |
| The ecosystem functions optimal Ecosystem can still function without all components Rely on ecosystem resistance and resilience | Ecosystem health |
| The ability of an ecosystem to maintain structural function in the face of stress | Ecosystem resistence |
| An ecosystems rate of recovery after stress has occurred | Ecosystem resilience |
| Not restoration; not sustainability requires input of energy and nutrients into the system | Production system |
| Snapshot; state of system at a given time | Ecosystem state |
| Things that occur that bring about the current state of an ecosystem | Processes |
| What are the two components of natural heritage strategy? | Natural heritage system and restoration/management strategy |
| What are the three components of natural heritage system? | Core reserve/nodes, corridors and buffer zones |
| Large spaces of intact areas | Core reserves/nodes |
| Small landscape/natural spaces that connect core reserves to one another | Corridor |
| Best natural habitat; source of plant/animal species Serve as models for restoration, help you recreate what is found in reserves in a restoration plan Maintain maintenance of ecosystem function in surrounding landscape | The function of core reserves/nodes |
| Minimize negative impacts from activities close to reserve/nodes | A buffer zone |
| Shelter for species subject to edge predation Insulates vegetation from elements Stabilizes/filters sediments, runoff and toxins | Buffer zone function |
| What are the three degrees of impairment? | Degraded, damaged and destroyed |
| Slightly impaired | Degraded |
| Medium impirment | Damaged |
| Highly impaired ecosystem | Destroyed |
| A little bit of disturbance every once in a while | Incremental disturbance |
| Sudden, single event | An acute disturbance |
| Constantly over a long period of time | Chronic disturbance |
| Reduced specialist and increased generalists Colonization by invasive species Simplified community structure Change in micro climate Changes in frequency distribution of plant life forms Loss of beneficial soil properties | First six of the eight indicators of ecological consequences of impairment |
| Reduced capacity for mineral/nutrient retention Altered moisture regime | Last two of the eight indicators of ecological consequences of impairment |
| K strategist | Specialists - can tolerate stress in an ecosystem |
| r strategists | Generalists - cannot tolerate much disturbance |
| Degredation that causes a state to become progressively dire, although true desert conditions are not obtained | desertification |
| Processes by which soil in the root zone become progressively more salty through the evaporation of irrigation water or another cause generally related to land use | Salinization |
| Developed under the joint influences of natural processes and human-imposed organization | Cultural Ecosystems |
| Heat generated by fire significant to kill unwanted species | Lethal temperature |
| Fire moves slowly enough to kill unwanted species | Residence Time |
| Re establish burning regimes Fuel reduction Cultural systems maintenance by fire change | The role of fire in restoration |
| Contain and assemblage of species representive of reference model Contain primarily indigenous species All functional groups present Physical environment suitable for sustaining reproduction populations | The first four ecological attributes |
| Normal function without any signs of dysfunction Restored system is integrated witht he landscape Surrounding landscape is not a threat to integrity or health of system Ecosystem is resilient to expected sources of stress | Numbers 5 - 8 of ecological attributes |
| Ecosystem can be self sustaining and dynamic | Number 9 of ecological attributs |
| Species composition determines structure and function Composition should resemble reference model Plant community is key Not all species must be present when complete | Species composition |
| Must be able to support the biota | Physical environment |
Created by:
Karubin
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