Primary Succession :Case study in Acadia National
... lichens and mosses begin growing on the new land. • Secondary Succession- changes following a disaster occurs in a place where an ecosystem was already established. Occurs more rapidly than primary succession. ...
... lichens and mosses begin growing on the new land. • Secondary Succession- changes following a disaster occurs in a place where an ecosystem was already established. Occurs more rapidly than primary succession. ...
How Changes Occur Naturally in Ecosystems
... Ecological succession refers to changes that take place over time in the types of organisms that live in an area. There are two types of ecological succession: 1. Primary succession: Primary succession occurs in areas where no soil exists, such as following glaciation or a lava flow. Wind and rain c ...
... Ecological succession refers to changes that take place over time in the types of organisms that live in an area. There are two types of ecological succession: 1. Primary succession: Primary succession occurs in areas where no soil exists, such as following glaciation or a lava flow. Wind and rain c ...
Goulden
... • Probability of event – landscape issue that accounts for the frac;on of landscape that is vulnerable (spa;al probability) and the likelihood of an ...
... • Probability of event – landscape issue that accounts for the frac;on of landscape that is vulnerable (spa;al probability) and the likelihood of an ...
17 Ecosystem change and resiliency
... likely to recover from a major disturbance. The level of resilience depends on several important factors, one of which is the native biodiversity within and surrounding the disturbed area. Because different species occupy different habitats and perform different roles within an ecosystem, the more s ...
... likely to recover from a major disturbance. The level of resilience depends on several important factors, one of which is the native biodiversity within and surrounding the disturbed area. Because different species occupy different habitats and perform different roles within an ecosystem, the more s ...
Ecological Succession
... a manmade fire or clearcutting. Soil is already present so plants can grow quite quickly (opposite of primary succession). ...
... a manmade fire or clearcutting. Soil is already present so plants can grow quite quickly (opposite of primary succession). ...
Ecological Succession
... • Ecological succession is the sequence of community and ecosystem changes (colonized by a variety of species, gradually replaced by other species) after a disturbance: volcanic eruption or a glacier, strip away all the vegetation. • Primary succession occurs where no soil exists (lifeless area) whe ...
... • Ecological succession is the sequence of community and ecosystem changes (colonized by a variety of species, gradually replaced by other species) after a disturbance: volcanic eruption or a glacier, strip away all the vegetation. • Primary succession occurs where no soil exists (lifeless area) whe ...
Ecological Succession Worksheet
... As the water level fell, land was exposed. Many small lakes or ponds were left behind where there were depressions in the land. Below are illustrations and descriptions of four ponds as they exist today. Use the illustrations and descriptions to answer the questions about the ponds. ...
... As the water level fell, land was exposed. Many small lakes or ponds were left behind where there were depressions in the land. Below are illustrations and descriptions of four ponds as they exist today. Use the illustrations and descriptions to answer the questions about the ponds. ...
Fire as an evolutionary pressure shaping plant traits
... seed coat structures per se might have originated in response to any number of factors, their precise organization into a heat-shock-dependent seed is an adaptation to fire in some situations. Germination triggered by combustion chemicals Smoke-induced germination is a trait that on the surface woul ...
... seed coat structures per se might have originated in response to any number of factors, their precise organization into a heat-shock-dependent seed is an adaptation to fire in some situations. Germination triggered by combustion chemicals Smoke-induced germination is a trait that on the surface woul ...
Restoration of Forest Health in two National Parks on the Island of
... Abundant supply of preferred forage species. ...
... Abundant supply of preferred forage species. ...
Missouri`s Least Wanted Wetland Species
... • Foliar application: (aquatic glyphosate, imazapyr) • Fire: use in IPM regime to remove thatch • Mowing/cutting: use in IPM • Hand pulling: not recommended ...
... • Foliar application: (aquatic glyphosate, imazapyr) • Fire: use in IPM regime to remove thatch • Mowing/cutting: use in IPM • Hand pulling: not recommended ...
Beth Schultz (Word - 22 KB) - Department of the Environment
... disastrous effect on many species of flora and fauna and the habitat structure.2 They deplete soil nutrients, which do not have enough time between burns to recover. They remove the protective humus that retains moisture in the soil and keeps soil temperatures down. They deplete some species of fung ...
... disastrous effect on many species of flora and fauna and the habitat structure.2 They deplete soil nutrients, which do not have enough time between burns to recover. They remove the protective humus that retains moisture in the soil and keeps soil temperatures down. They deplete some species of fung ...
Keeleyetal Adaptations
... [1] linking of serotiny to infertile soils follows Stephen D. Hopper’s [17] contention that low fertility soils, such as those widespread in Western Australia and South Africa, are derived from ancient Cretaceous substrates. Hopper argues that this ancient association with infertile soils is the pri ...
... [1] linking of serotiny to infertile soils follows Stephen D. Hopper’s [17] contention that low fertility soils, such as those widespread in Western Australia and South Africa, are derived from ancient Cretaceous substrates. Hopper argues that this ancient association with infertile soils is the pri ...
TEN ACTION PLAN-2008-2012
... The blue gums in the area are known to be utilized for their foraging resource by swift parrots Lathamus discolor. Blue gum is the prime foraging tree for the swift parrot Black gums provide secondary foraging resource which is understood to be significant in years where blue gums fail to flower or ...
... The blue gums in the area are known to be utilized for their foraging resource by swift parrots Lathamus discolor. Blue gum is the prime foraging tree for the swift parrot Black gums provide secondary foraging resource which is understood to be significant in years where blue gums fail to flower or ...
Rare Plants and Rare Plant communities in Alberta Face an
... the loss of many formerly healthy rare limber pine and whitebark pine vegetation communities. The barren bedrock created by intense heat presents an inhospitable environment for plant propagules. Recovery from site degradation in such communities may take decades. The area lying between Highway 11 a ...
... the loss of many formerly healthy rare limber pine and whitebark pine vegetation communities. The barren bedrock created by intense heat presents an inhospitable environment for plant propagules. Recovery from site degradation in such communities may take decades. The area lying between Highway 11 a ...
Wildlife Habitat Management
... a. Habitat: A closed canopy forest with minimum 10 inch DBH. The best stands are 50-60 years old. They should provide optimal mast production. Hollow trees for wintering dens are also optimal. ...
... a. Habitat: A closed canopy forest with minimum 10 inch DBH. The best stands are 50-60 years old. They should provide optimal mast production. Hollow trees for wintering dens are also optimal. ...
Principles of ecosystem management
... often too harsh for trees. This treeless landscape, called tundra, is characterized by a very short growing season, harsh winters, and the potential for frost any month of the year. • The arctic tundra is a biome of low productivity, low diversity, and low resilience. Only the upper layer of soil th ...
... often too harsh for trees. This treeless landscape, called tundra, is characterized by a very short growing season, harsh winters, and the potential for frost any month of the year. • The arctic tundra is a biome of low productivity, low diversity, and low resilience. Only the upper layer of soil th ...
Glossary
... that are often hundreds, sometimes thousands of years old. Examples include forests of Douglas fir, western hemlock, giant sequoia, and coastal redwoods in the western United States. Compare second-growth forest, tree plantation. ...
... that are often hundreds, sometimes thousands of years old. Examples include forests of Douglas fir, western hemlock, giant sequoia, and coastal redwoods in the western United States. Compare second-growth forest, tree plantation. ...
View or download discussion, management considerations and literature cited
... were able to survive severe scorching by sprouting from the base of damaged stems. The results were consistent with Sophora chrysophylla survivorship (60%) and Dodonaea viscosa survivorship (3-50%) reported in natural wildfires of comparable burn severity (Tunison et al. 1994, 1995). Dodonaea viscos ...
... were able to survive severe scorching by sprouting from the base of damaged stems. The results were consistent with Sophora chrysophylla survivorship (60%) and Dodonaea viscosa survivorship (3-50%) reported in natural wildfires of comparable burn severity (Tunison et al. 1994, 1995). Dodonaea viscos ...
Forest Fires
... fires on the basis of their intensity. The occurrence and intensity of fire in a forest depends on the topography, weather (precipitation and humidity, temperature and winds) and the forest type. These factors are popularly known as the fire environment in the USA. A long dry season will provide a ...
... fires on the basis of their intensity. The occurrence and intensity of fire in a forest depends on the topography, weather (precipitation and humidity, temperature and winds) and the forest type. These factors are popularly known as the fire environment in the USA. A long dry season will provide a ...
Background Tejon Ranch is a 270,000 acre private property situated
... situated at the intersection of the Sierra Nevada, Mojave Desert, Coastal Range, and San Joaquin Valley bioregions. The Ranch’s size, location, and lack of fragmentation present an opportunity to protect a diverse array of species and habitats within a single reserve. Under a 2008 land use agreement ...
... situated at the intersection of the Sierra Nevada, Mojave Desert, Coastal Range, and San Joaquin Valley bioregions. The Ranch’s size, location, and lack of fragmentation present an opportunity to protect a diverse array of species and habitats within a single reserve. Under a 2008 land use agreement ...
Forest Fires 3 -4 - Indian Academy of Sciences
... fires on the basis of their intensity. The occurrence and intensity of fire in a forest depends on the topography, weather (precipitation and humidity, temperature and winds) and the forest type. These factors are popularly known as the 'fire environment' in the USA. A long dry season will provide a ...
... fires on the basis of their intensity. The occurrence and intensity of fire in a forest depends on the topography, weather (precipitation and humidity, temperature and winds) and the forest type. These factors are popularly known as the 'fire environment' in the USA. A long dry season will provide a ...
Chapter 5.3
... Secondary Succession: occurs on a surface where an ecosystem has previously existed ◦ More common ◦ Can occur in ecosystems that have been disturbed or disrupted by humans, animals, or natural disasters ...
... Secondary Succession: occurs on a surface where an ecosystem has previously existed ◦ More common ◦ Can occur in ecosystems that have been disturbed or disrupted by humans, animals, or natural disasters ...
Part I: Ecological Succession
... cause an entire landscape to change. These changes affect all of the living components of that landscape as well. Sometimes, these changes are caused by human activity. When there is a major change in an ecosystem, there is a process that occurs to re-establish the species in that area. This gradual ...
... cause an entire landscape to change. These changes affect all of the living components of that landscape as well. Sometimes, these changes are caused by human activity. When there is a major change in an ecosystem, there is a process that occurs to re-establish the species in that area. This gradual ...
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.