File
... lizards caused a widespread decline in their population. What is a consequence of this event? ...
... lizards caused a widespread decline in their population. What is a consequence of this event? ...
Option G: Ecology and conservation
... Ecosystems have a lifecycle that usually ends with a natural “disaster” such as a forest fire. The result is a clear fertile area for plants to colonize with different abiotic and biotic factors then the preceding forest. ...
... Ecosystems have a lifecycle that usually ends with a natural “disaster” such as a forest fire. The result is a clear fertile area for plants to colonize with different abiotic and biotic factors then the preceding forest. ...
Simulated effects of prescribed burning on the population dynamics
... Pyxidanthera brevifolia across Fort Bragg Military Reservation ...
... Pyxidanthera brevifolia across Fort Bragg Military Reservation ...
File - Environmental Sciences
... 1. Krataku was most famous for its eruption in 1883. 2. Anak Krakatoa is the only island formed, back in 1926. 3. There were hardly any humans left, and there were some insects stuck underground. 4. The type of succession, which occurred, was primary succession. 5. The pioneer species were pocket go ...
... 1. Krataku was most famous for its eruption in 1883. 2. Anak Krakatoa is the only island formed, back in 1926. 3. There were hardly any humans left, and there were some insects stuck underground. 4. The type of succession, which occurred, was primary succession. 5. The pioneer species were pocket go ...
Fire in Forest Ecosystems of the Inland West
... understory vegetation, which is important to wildlife and biodiversity, and helps maintain or provide opportunities for some niche-dependent species. Natural fire regimes also provide a stimulus for the reproductive cycle for many plants while preparing suitable seedbeds for new seedlings. The Inlan ...
... understory vegetation, which is important to wildlife and biodiversity, and helps maintain or provide opportunities for some niche-dependent species. Natural fire regimes also provide a stimulus for the reproductive cycle for many plants while preparing suitable seedbeds for new seedlings. The Inlan ...
doc
... leasing more land), decreased gains (selling cows at lower prices), or both. Economic survival often depends on the capacity of ranchers to buffer against economic losses in drought years, either through personal savings or governmental support policies. Poorer ranchers are more likely to risk overg ...
... leasing more land), decreased gains (selling cows at lower prices), or both. Economic survival often depends on the capacity of ranchers to buffer against economic losses in drought years, either through personal savings or governmental support policies. Poorer ranchers are more likely to risk overg ...
Ecological succession Primary succession Secondary succession
... ! Disturbances prevent communities from reaching a state of equilibrium in species diversity or composition ...
... ! Disturbances prevent communities from reaching a state of equilibrium in species diversity or composition ...
Slide 1
... systems over longer time periods (assuming uninterrupted restoration efforts), would we see the recovery of these systems to a former, desired state? How do we proceed in restoration in light of this? • How are the presence of alternative dynamic regimes determined and how can we filter out confound ...
... systems over longer time periods (assuming uninterrupted restoration efforts), would we see the recovery of these systems to a former, desired state? How do we proceed in restoration in light of this? • How are the presence of alternative dynamic regimes determined and how can we filter out confound ...
Lecture 30
... topic of heated debate, from the bars in park border towns to the US Congress. n By September snow dampened the fires that the US’s largest fire-fighting effort could not. n Hence the joke: n ...
... topic of heated debate, from the bars in park border towns to the US Congress. n By September snow dampened the fires that the US’s largest fire-fighting effort could not. n Hence the joke: n ...
Fire and Wildlife
... Mechanisms of post-fire population change • Population response to fire regulated by: – Availability of food resources – Changes in cover – Movement of populations in/out of burned/unburned areas (migration, ...
... Mechanisms of post-fire population change • Population response to fire regulated by: – Availability of food resources – Changes in cover – Movement of populations in/out of burned/unburned areas (migration, ...
Effects of Fire in Grasslands
... Effects of Fire in Grasslands Although most people say that following fires, regrowth is more common than succession succession, some species changes can occur, depending on: 1. Fire intensity • Increases with litter or mulch buildup 2. Season of fire • Fires cooler in spring, hotter in summer or fa ...
... Effects of Fire in Grasslands Although most people say that following fires, regrowth is more common than succession succession, some species changes can occur, depending on: 1. Fire intensity • Increases with litter or mulch buildup 2. Season of fire • Fires cooler in spring, hotter in summer or fa ...
Printer-friendly version
... Fire is a normal, natural process in many of British Columbia’s ecosystems. Many species of birds, insects, plants and animals depend on fire for its regenerative properties. Fires help control insects and diseases in forests, and lead to forest succession (younger forests replacing older forests) t ...
... Fire is a normal, natural process in many of British Columbia’s ecosystems. Many species of birds, insects, plants and animals depend on fire for its regenerative properties. Fires help control insects and diseases in forests, and lead to forest succession (younger forests replacing older forests) t ...
Disturbance
... Wildlife Management • Salvage cutting may reduce the suitability of burnedforest habitat by removing the most important element-standing: fire-killed trees needed for foraging and nesting (ecological legacies) • Prescribed burning becoming more accepted as a tool to reduce fuel loads ...
... Wildlife Management • Salvage cutting may reduce the suitability of burnedforest habitat by removing the most important element-standing: fire-killed trees needed for foraging and nesting (ecological legacies) • Prescribed burning becoming more accepted as a tool to reduce fuel loads ...
Community Dynamics
... Fire is a spectacular, and sometimes scary process, but ecologically this is very often essential to the functioning of the system. It is almost never a “disaster” from an ecological perspective ...
... Fire is a spectacular, and sometimes scary process, but ecologically this is very often essential to the functioning of the system. It is almost never a “disaster” from an ecological perspective ...
3.2 Balance and Change in Ecosystems
... Succession allows ecosystems to recover from disturbances and keeps them in balance over long periods of time. Some human disturbances can not be repaired by natural ecological succession, sometimes humans need to take action to help restore the area. Humans can plant trees in deforested and mining ...
... Succession allows ecosystems to recover from disturbances and keeps them in balance over long periods of time. Some human disturbances can not be repaired by natural ecological succession, sometimes humans need to take action to help restore the area. Humans can plant trees in deforested and mining ...
AP Environmental Science notes
... 3. nearer island have more species 4. research supports these theoretical projections ...
... 3. nearer island have more species 4. research supports these theoretical projections ...
Fire in Restoration Ecology
... Veblen, T.T. 2003. Key issues in fire regime research for fuels management and ecological restoration. Pages 259-276 in: P. Omi and L. Joyce (technical eds). Fire, Fuel Treatments and Ecological Restoration: Conference proceedings; 2002 16-18 April; Fort Collins, CO: U.S. Department of Agriculture, ...
... Veblen, T.T. 2003. Key issues in fire regime research for fuels management and ecological restoration. Pages 259-276 in: P. Omi and L. Joyce (technical eds). Fire, Fuel Treatments and Ecological Restoration: Conference proceedings; 2002 16-18 April; Fort Collins, CO: U.S. Department of Agriculture, ...
Invasive Species
... Native to the drier areas of Eurasia and Africa Sprouts rapidly after a fire Increases fire frequency hogs the light, water and nutrients, allowing little to go native plants near it ...
... Native to the drier areas of Eurasia and Africa Sprouts rapidly after a fire Increases fire frequency hogs the light, water and nutrients, allowing little to go native plants near it ...
Invasive Plants and Fire Regimes
... Tunison et al. – Fire Effects on Other Ecosystems • Coastal Lowlands: Increase in native pili grass; native shrub species able to establish by resprouting • Rainforest: Rapid recovery of native vegetation • Montane Mesic Forest: Shift in native species; no increase in alien cover ...
... Tunison et al. – Fire Effects on Other Ecosystems • Coastal Lowlands: Increase in native pili grass; native shrub species able to establish by resprouting • Rainforest: Rapid recovery of native vegetation • Montane Mesic Forest: Shift in native species; no increase in alien cover ...
Response of Four Lake Wales Ridge Sandhill species to
... Restoration of endemic-rich but long-unburned sandhills on the Lake Wales Ridge (LWR) of peninsular Florida poses a considerable challenge to land managers and plant conservationists. Decades of fire suppression have led to the development of an extensive oakdominated subcanopy and a concomitant los ...
... Restoration of endemic-rich but long-unburned sandhills on the Lake Wales Ridge (LWR) of peninsular Florida poses a considerable challenge to land managers and plant conservationists. Decades of fire suppression have led to the development of an extensive oakdominated subcanopy and a concomitant los ...
Fire ecology
Fire ecology is concerned with the processes linking the natural incidence of fire in an ecosystem and the ecological effects of this fire. Many ecosystems, particularly prairie, savanna, chaparral and coniferous forests, have evolved with fire as a necessary contributor to habitat vitality and renewal. Many plant species in naturally fire-affected environments require fire to germinate, establish, or to reproduce. Wildfire suppression not only eliminates these species, but also the animals that depend upon them. Finally, fire suppression can lead to the build-up of flammable debris and the creation of less frequent but much larger and more destructive wildfires.Campaigns in the United States have historically molded public opinion to believe that wildfires are always harmful to nature. This view is based on the outdated belief that ecosystems progress toward an equilibrium and that any disturbance, such as fire, disrupts the harmony of nature. More recent ecological research has shown, however, that fire is an integral component in the function and biodiversity of many natural habitats, and that the organisms within these communities have adapted to withstand, and even to exploit, natural wildfire. More generally, fire is now regarded as a 'natural disturbance', similar to flooding, wind-storms, and landslides, that has driven the evolution of species and controls the characteristics of ecosystems. The map below right shows how each ecosystem type in the United States has a characteristic frequency of fire, ranging from once every 10 years to once every 500 years. Natural disturbances can be described by key factors such as frequency, intensity and area. The map also shows intensity, since some fires are understory fires (light burns that affect mostly understory plants) while others are stand replacement fires (intense fires that tend to kill the adult trees as well.)Fire suppression, in combination with other human-caused environmental changes, has resulted in unforeseen consequences for natural ecosystems. Some uncharacteristically large wildfires in the United States have been caused as a consequence of years of fire suppression and the continuing expansion of people into fire-adapted ecosystems. Land managers are faced with tough questions regarding where to restore a natural fire regime.