standard 8 - characteristics and distribution of Earth`s ecosystems
... wide variety of wildlife, like desert bighorn sheep, mountain lions, desert tortoise, and over 200 species of birds. - Photo by Bob Wick, BLM ...
... wide variety of wildlife, like desert bighorn sheep, mountain lions, desert tortoise, and over 200 species of birds. - Photo by Bob Wick, BLM ...
The Bamboo Fire Cycle Hypothesis: A Comment - BioS
... bamboo clone) need only live long enough to grow large enough to ensure a major disturbance, or gap, upon death. Even if large gaps created by bamboo mortality are inviting to other pioneer species, the prolific bamboo seeding ensures successful bamboo recruitment into the site of the parental clone ...
... bamboo clone) need only live long enough to grow large enough to ensure a major disturbance, or gap, upon death. Even if large gaps created by bamboo mortality are inviting to other pioneer species, the prolific bamboo seeding ensures successful bamboo recruitment into the site of the parental clone ...
FIRE ANT PREDATION ON MONARCH LARVAE (NYMPHALIDAE
... On April 7, using the same stations employed by the pOint-centered quarter method to estimate host stem denSity, fire ant mound denSity was estimated to be 1011 mounds/ha. Occasionally stems of A oenotheroides were founel growing up through the mounds. Fire ant presence on A oenotheroides also was n ...
... On April 7, using the same stations employed by the pOint-centered quarter method to estimate host stem denSity, fire ant mound denSity was estimated to be 1011 mounds/ha. Occasionally stems of A oenotheroides were founel growing up through the mounds. Fire ant presence on A oenotheroides also was n ...
Ecological Succession Worksheet
... Because lichens and some mosses are among the first organisms to appear, they are called pioneer species. Pioneer species secrete acids that help break down rocks. As pioneer species die, their decaying organic materials mix with small pieces of rock. This is the first stage of soil development. Sma ...
... Because lichens and some mosses are among the first organisms to appear, they are called pioneer species. Pioneer species secrete acids that help break down rocks. As pioneer species die, their decaying organic materials mix with small pieces of rock. This is the first stage of soil development. Sma ...
Rim Fire Reforestation 19777 Greenley Road Sonora, CA 95370
... conifers by rodents and birds (e.g., Clarks nutcracker) (Vander Wall et al. 2005). Also, even long-distance dispersal of the larger-seeded pines, such as ponderosa, by birds is possible (Lesser and Jackson 2013). Sagio (1969) concluded that, “Rodent activities-especially those of C. lateralis --are ...
... conifers by rodents and birds (e.g., Clarks nutcracker) (Vander Wall et al. 2005). Also, even long-distance dispersal of the larger-seeded pines, such as ponderosa, by birds is possible (Lesser and Jackson 2013). Sagio (1969) concluded that, “Rodent activities-especially those of C. lateralis --are ...
Natural Disturbance and Environmental Assessments in
... represented generally by younger forests, shrublands and grasslands/wetlands that support grasses and sedges • Different disturbance types lower habitat suitability rankings within 100 to 200 m of the disturbance ...
... represented generally by younger forests, shrublands and grasslands/wetlands that support grasses and sedges • Different disturbance types lower habitat suitability rankings within 100 to 200 m of the disturbance ...
3.1 Recovery and Renewal
... sand dunes) Plants and plant-like species that are part of primary succession are often called pioneer species (lichens and grasses) ...
... sand dunes) Plants and plant-like species that are part of primary succession are often called pioneer species (lichens and grasses) ...
Our June 11, 2012 comment letter on the USFS land management
... Pg 201: “Most recently, the 1996 Highway 58 fire burned 99% of the unit. As such, nearly all the vegetation is even-aged chaparral. Without active management, this vegetation type tends to reduce wildlife habitat and biodiversity over time and may be at risk to burn in a future large fire event.” ...
... Pg 201: “Most recently, the 1996 Highway 58 fire burned 99% of the unit. As such, nearly all the vegetation is even-aged chaparral. Without active management, this vegetation type tends to reduce wildlife habitat and biodiversity over time and may be at risk to burn in a future large fire event.” ...
Managing Wildfire for Multiple Objectives
... management of the fire didn’t change, the administration of the fire didn’t change,” says Marks. “All that changed was management on the ground. We shifted from monitoring to actually taking actions to ...
... management of the fire didn’t change, the administration of the fire didn’t change,” says Marks. “All that changed was management on the ground. We shifted from monitoring to actually taking actions to ...
What is an Ecosystem? - Garden Earth Naturalist Homepage
... The Soil Department is responsible for maintaining a healthy balance in the soil portion of the ecosystem. Soil organisms break down waste materials from plants and animals, and maintaining the structure and nutritional quality of the soil. The Biodiversity Department is responsible for maintaining ...
... The Soil Department is responsible for maintaining a healthy balance in the soil portion of the ecosystem. Soil organisms break down waste materials from plants and animals, and maintaining the structure and nutritional quality of the soil. The Biodiversity Department is responsible for maintaining ...
chapt13_lecture
... Move in dense herds eating everything including weeds Trampling and intense eating provide an opening for pioneer species. Buffalo chips fertilize the soil. Dig out wallows in which they take dust baths and this disturbs surface, allowing primary succession After grazing, they move on and do not ret ...
... Move in dense herds eating everything including weeds Trampling and intense eating provide an opening for pioneer species. Buffalo chips fertilize the soil. Dig out wallows in which they take dust baths and this disturbs surface, allowing primary succession After grazing, they move on and do not ret ...
![ECOLOGICAL SUCCESSION1[1].](http://s1.studyres.com/store/data/008524495_1-c8fb3a40ac5c8577e5da87ca8508e181-300x300.png)
ECOLOGICAL SUCCESSION1[1].
... • The simple plants die, adding more organic material (nutrients to the soil) • The soil layer thickens, and grasses, wildflowers, and other plants begin to take over ...
... • The simple plants die, adding more organic material (nutrients to the soil) • The soil layer thickens, and grasses, wildflowers, and other plants begin to take over ...
Ecological Succession What is Ecological Succession?
... • The simple plants die, adding more organic material (nutrients to the soil) • The soil layer thickens, and grasses, wildflowers, and other plants begin to take over ...
... • The simple plants die, adding more organic material (nutrients to the soil) • The soil layer thickens, and grasses, wildflowers, and other plants begin to take over ...
Appropriate Actions for Woodland Management
... 2a. Most precipitation falls during summer. The oldest trees (possibly >150 years) are older and usually taller than those found in Grasslands – PJ Savanna or Juniper Savanna 2b. Season of greatest precipitation can vary. Old trees are very rare and found on microsites that historically would have a ...
... 2a. Most precipitation falls during summer. The oldest trees (possibly >150 years) are older and usually taller than those found in Grasslands – PJ Savanna or Juniper Savanna 2b. Season of greatest precipitation can vary. Old trees are very rare and found on microsites that historically would have a ...
the exerpt from the 2010 Action Plan
... heath 1–1.5 m high. Near Waychinicup R. and in the Fitzgerald R. National Park, the main habitat is closed heath 0.5–1 m high, sometimes with scattered patches of mallee eucalypts, though more open heaths may be used if there are enough patches of dense shrubs in the area (McNee 1986). Territory siz ...
... heath 1–1.5 m high. Near Waychinicup R. and in the Fitzgerald R. National Park, the main habitat is closed heath 0.5–1 m high, sometimes with scattered patches of mallee eucalypts, though more open heaths may be used if there are enough patches of dense shrubs in the area (McNee 1986). Territory siz ...
3MB - University of Idaho
... When was the last surface fire that scarred this tree? What was the average number of years between fires that scarred this tree? This is from Long Valley near Flagstaff, Arizona, an area where fires were once VERY frequent ...
... When was the last surface fire that scarred this tree? What was the average number of years between fires that scarred this tree? This is from Long Valley near Flagstaff, Arizona, an area where fires were once VERY frequent ...
Ecological Succession How Ecosystems Change
... 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. ...
Historical Range of Variability Revisited
... 3. Hypotheses about the drivers and mechanisms of contemporary and future ecological change can be developed and tested with historical ecological data (Swetnam et al. 1999, Keane et al. 2009). ...
... 3. Hypotheses about the drivers and mechanisms of contemporary and future ecological change can be developed and tested with historical ecological data (Swetnam et al. 1999, Keane et al. 2009). ...
Document
... made adaptable by monitoring and research based on our best understanding of the ecological interactions and processes necessary to sustain ecosystem composition, structure, and function.” Ecological Society of America, 1996 ...
... made adaptable by monitoring and research based on our best understanding of the ecological interactions and processes necessary to sustain ecosystem composition, structure, and function.” Ecological Society of America, 1996 ...
Recommended Fire Regimes - South East Queensland Fire and
... Good preparation and planning before undertaking a burn will increase the likelihood of successful outcomes. By preparing a Fire Management Plan (FMP) you will be best placed to meet the ecological requirements of the vegetation communities, whilst achieving your burn objectives and protecting life ...
... Good preparation and planning before undertaking a burn will increase the likelihood of successful outcomes. By preparing a Fire Management Plan (FMP) you will be best placed to meet the ecological requirements of the vegetation communities, whilst achieving your burn objectives and protecting life ...
Ecological consequences of alternative fuel reduction treatments in seasonally dry forests:
... The effects of these treatments were measured on a wide variety of response variables, including the structure and composition of trees and understory vegetation, fuel beds and coarse woody debris, soils, bark beetle activity, and small mammal and avian species abundance. For a complete description ...
... The effects of these treatments were measured on a wide variety of response variables, including the structure and composition of trees and understory vegetation, fuel beds and coarse woody debris, soils, bark beetle activity, and small mammal and avian species abundance. For a complete description ...
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.