El Yunque Caribbean National Forest
... animal species. That means they contain anywhere from 2 million to 20 million species. The rain forests, and the species that live in them, are being lost very rapidly. Each hour, about 3600 hectares (9000 acres) of rain forest are cleared. At the same time, six plant or animal species go extinct. O ...
... animal species. That means they contain anywhere from 2 million to 20 million species. The rain forests, and the species that live in them, are being lost very rapidly. Each hour, about 3600 hectares (9000 acres) of rain forest are cleared. At the same time, six plant or animal species go extinct. O ...
E Block Tundra, Temperate Grassland, Coniferous
... • Due to their thick fur, a polar bear would not be very happy in warmer climates. • Their primary sources of food are also tundra-based animals. • Due to ecological competition, in other biomes, a polar bear would likely have to compete with other top-level predators, a position which they are not ...
... • Due to their thick fur, a polar bear would not be very happy in warmer climates. • Their primary sources of food are also tundra-based animals. • Due to ecological competition, in other biomes, a polar bear would likely have to compete with other top-level predators, a position which they are not ...
Contributions of a global network of tree diversity
... trials consisted of monocultures or, less frequently, twospecies mixtures (Scherer-Lorenzen 2014). Presently, 300 years after von Carlowitźs proposition of sustainability and given recent advances in biodiversity science (e.g., Cardinale et al. 2012), we need to know which mixtures provide higher l ...
... trials consisted of monocultures or, less frequently, twospecies mixtures (Scherer-Lorenzen 2014). Presently, 300 years after von Carlowitźs proposition of sustainability and given recent advances in biodiversity science (e.g., Cardinale et al. 2012), we need to know which mixtures provide higher l ...
Species composition, Plant Community structure and Natural
... All trees, shrubs and herbs including vascular epiphytes were recorded from the systematically established quadrats along each transect. Species which were readily identifiable were recorded in the field. For species which were difficult to identify in the field, their local name were recorded, herb ...
... All trees, shrubs and herbs including vascular epiphytes were recorded from the systematically established quadrats along each transect. Species which were readily identifiable were recorded in the field. For species which were difficult to identify in the field, their local name were recorded, herb ...
FIRST DRAFT: Anderson 03/2001
... stabilize the loss of biodiversity within an ecoregion then it is critical that the occurrences exhibit (or develop) the characteristics to insure that they function as source-habitat for those species (Pulliam 1998). Source-sink population dynamics, because of their implication on the role of reser ...
... stabilize the loss of biodiversity within an ecoregion then it is critical that the occurrences exhibit (or develop) the characteristics to insure that they function as source-habitat for those species (Pulliam 1998). Source-sink population dynamics, because of their implication on the role of reser ...
Effects of Selective Logging on a Bird Community in the Brazilian
... Abstract. I evaluated the effects of selective logging upon a bird community in the Brazilian Atlantic forest. Two areas 500 m apart were selectedfor quantitative (point censuses)avian surveys: a non-fragmentedprimary forest (PF) and a selectively logged forest (LF). Six of eight quantitative measur ...
... Abstract. I evaluated the effects of selective logging upon a bird community in the Brazilian Atlantic forest. Two areas 500 m apart were selectedfor quantitative (point censuses)avian surveys: a non-fragmentedprimary forest (PF) and a selectively logged forest (LF). Six of eight quantitative measur ...
Progress Report - Rufford Small Grants
... in the study site. At each transect there were 11 point which was 200 m apart. These points were the data collection point for both the bird and habitat survey. The bird and habitat survey for the first season was conducted between October and December 2011. Approximately 150 bird species had been r ...
... in the study site. At each transect there were 11 point which was 200 m apart. These points were the data collection point for both the bird and habitat survey. The bird and habitat survey for the first season was conducted between October and December 2011. Approximately 150 bird species had been r ...
File
... the Carolinas’ Piedmont. Over the last century, these fields have passed through several stages and matured into oak forest. Changes will continue for years to come. ...
... the Carolinas’ Piedmont. Over the last century, these fields have passed through several stages and matured into oak forest. Changes will continue for years to come. ...
The Rain Forest—An Ecosystem In Trouble
... Rain forests provide scientific value. Scientists believe they have discovered only a small percentage of the plants that grow in the rain forests. Many of these plants have been used to make medicines. For example, specialized medicines used to treat a rare form of leukemia were created from plants ...
... Rain forests provide scientific value. Scientists believe they have discovered only a small percentage of the plants that grow in the rain forests. Many of these plants have been used to make medicines. For example, specialized medicines used to treat a rare form of leukemia were created from plants ...
Forest 1
... composition). Each community type in a successional series is often named according to one or several dominant species (e.g., beech and maple trees). The first species to enter and occupy a site are termed pioneer species. Each community in the successional series is termed a seral stage, and the en ...
... composition). Each community type in a successional series is often named according to one or several dominant species (e.g., beech and maple trees). The first species to enter and occupy a site are termed pioneer species. Each community in the successional series is termed a seral stage, and the en ...
... Predictions derived from use of the Gompertz growth curve must be treated cautiously, not only due to the limitation of the use of maximum values, which would be affected by environmental conditions at the location where measured, but also the result of various other factors such as climatic change, ...
Minnesota`s Tallgrass Aspen Parkland Biome
... followed by bushes such as raspberry. Species that do well in full sun such as boxelder, ash, and cherry are the first trees to recolonize the area. As these trees mature, they shade the forest floor, making it difficult for their own young to grow. Shade-loving species such as maple and basswood fi ...
... followed by bushes such as raspberry. Species that do well in full sun such as boxelder, ash, and cherry are the first trees to recolonize the area. As these trees mature, they shade the forest floor, making it difficult for their own young to grow. Shade-loving species such as maple and basswood fi ...
Conservation on an Island Biodiversity Hotspot
... assigned permits to collect specimens in a sustainable manner from the area. Recently, a team of scientists was sent to the island to research a plant found nowhere else that shows potential as a new malaria treatment. If the treatment is successful, it could save millions of lives. The research ins ...
... assigned permits to collect specimens in a sustainable manner from the area. Recently, a team of scientists was sent to the island to research a plant found nowhere else that shows potential as a new malaria treatment. If the treatment is successful, it could save millions of lives. The research ins ...
Rain Forests: Floristics
... tropics - after the separation of continental masses corresponding to South America, Africa, India and Australia, about 100 million years ago - generally have few genera and species, probably because there was not enough time for greater diversification. Such families are also restricted to certain ...
... tropics - after the separation of continental masses corresponding to South America, Africa, India and Australia, about 100 million years ago - generally have few genera and species, probably because there was not enough time for greater diversification. Such families are also restricted to certain ...
Biodiversity in young versus old forest Johanna Lundström
... The purpose of this introductory essay is to form a foundation for my PhD-study which will focus on how to make optimal selections of forest reserves; more specifically on how to find the most cost efficient distribution of forest ages to achieve the highest biodiversity value. The importance of you ...
... The purpose of this introductory essay is to form a foundation for my PhD-study which will focus on how to make optimal selections of forest reserves; more specifically on how to find the most cost efficient distribution of forest ages to achieve the highest biodiversity value. The importance of you ...
Agroforestry Note: Forest Grazing, Silvopasture, and Turning
... environmental stress on animals. Livestock managers may choose to utilize woodlots or forests as loafing lots for animals that simply need some place to be for a short while. They may also choose to turn livestock into the woods for short durations to help control invasive plants. These areas can so ...
... environmental stress on animals. Livestock managers may choose to utilize woodlots or forests as loafing lots for animals that simply need some place to be for a short while. They may also choose to turn livestock into the woods for short durations to help control invasive plants. These areas can so ...
The Role of Forests in the Preservation of Biodiversity
... steadily converted to other uses, or is so badly disrupted by harvesting activities that it will become scrub or semi-desert. In some parts of the tropics, it is estimated that forests are being destroyed at a rate as high as 2% per year. Hence, the role played by forests in preserving biodiversity ...
... steadily converted to other uses, or is so badly disrupted by harvesting activities that it will become scrub or semi-desert. In some parts of the tropics, it is estimated that forests are being destroyed at a rate as high as 2% per year. Hence, the role played by forests in preserving biodiversity ...
plant community composition in relation to soil physico
... were used as environmental variables are shown in Fig. 2. The first and the second axes explained 59.8 and 80.6%, respectively of the cumulative variation on the correlations between species and environmental data. Total canonical Eigen value was 0.807 and the corresponding axes were ...
... were used as environmental variables are shown in Fig. 2. The first and the second axes explained 59.8 and 80.6%, respectively of the cumulative variation on the correlations between species and environmental data. Total canonical Eigen value was 0.807 and the corresponding axes were ...
2b_52_tropical lowland rainforest birds.PMD
... 2 larger remnants showed that the abundance of some bird species seemed to be affected by factors such as food abundance and vegetation structure. However, bird diversity in these 2 remnants was poor and different from other larger forests within Southeast Asia. We recommend that existing forest rem ...
... 2 larger remnants showed that the abundance of some bird species seemed to be affected by factors such as food abundance and vegetation structure. However, bird diversity in these 2 remnants was poor and different from other larger forests within Southeast Asia. We recommend that existing forest rem ...
Apalachicola National Forest Longleaf Groundcover Planting FY12 Update for Survival
... FY12 Update for Survival ...
... FY12 Update for Survival ...
Cryptic genetic bottlenecks during restoration of an endangered
... wildings for a number of commercial species (Shorea parvifolia, S. leprosula, S. acuminata, S. bracteolata, S. roxburgii and Hopea odorata) have been established (Ahmad 2006). Vegetative propagation has a number of practical and economic advantages over sexual propagation. It saves time and can prod ...
... wildings for a number of commercial species (Shorea parvifolia, S. leprosula, S. acuminata, S. bracteolata, S. roxburgii and Hopea odorata) have been established (Ahmad 2006). Vegetative propagation has a number of practical and economic advantages over sexual propagation. It saves time and can prod ...
Stella J.M. Cousins - College of Natural Resources
... of American Foresters Joint World Congress. Salt Lake City, UT. October 6-11, 2014. Cousins, S. Pines under pressure: how Sierra Nevada forests respond to ozone and drought. Presentation. International Union of Forest Research Organizations World Congress. Salt Lake City, UT. October ...
... of American Foresters Joint World Congress. Salt Lake City, UT. October 6-11, 2014. Cousins, S. Pines under pressure: how Sierra Nevada forests respond to ozone and drought. Presentation. International Union of Forest Research Organizations World Congress. Salt Lake City, UT. October ...
Great Lakes Worm Watch Our Mission is to
... after earthworm invasion Before earthworm invasion (left), the forest floor, composed of slowly decomposing leaves & twigs, can be very thick. Plants have most of their roots in the forest floor because nutrient cycling occurs there. After earthworm invasion (right), the forest floor can be rapidly ...
... after earthworm invasion Before earthworm invasion (left), the forest floor, composed of slowly decomposing leaves & twigs, can be very thick. Plants have most of their roots in the forest floor because nutrient cycling occurs there. After earthworm invasion (right), the forest floor can be rapidly ...
Worksheet - Rudds Classroom
... Primary succession occurs _____________ on freshly exposed rock or places where _______ the organisms and soil have been removed or destroyed • However, most disturbances are _________ that drastic Secondary succession – occurs where a disturbance eliminates most _______________________ but does ___ ...
... Primary succession occurs _____________ on freshly exposed rock or places where _______ the organisms and soil have been removed or destroyed • However, most disturbances are _________ that drastic Secondary succession – occurs where a disturbance eliminates most _______________________ but does ___ ...
MS Wildlife Glossary
... ecological succession The changes, over time, in the structure and function of an ecosystem. When no previous vegetation exists on a site, the process is called primary succession. When a site supported vegetation previously but was disturbed, the process is called secondary succession. ...
... ecological succession The changes, over time, in the structure and function of an ecosystem. When no previous vegetation exists on a site, the process is called primary succession. When a site supported vegetation previously but was disturbed, the process is called secondary succession. ...
Old-growth forest
An old-growth forest (also termed primary forest, virgin forest, primeval forest, late seral forest, or in Britain, ancient woodland) is a forest that has attained great age without significant disturbance and thereby exhibits unique ecological features and might be classified as a climax community. Old-growth features include diverse tree-related structures that provide diverse wildlife habitat that increases the bio-diversity of the forested ecosystem. The concept of diverse tree structure includes multi-layered canopies and canopy gaps, greatly varying tree heights and diameters, and diverse tree species and classes and sizes of woody debris.Old-growth forests are economically valuable, and logging of these forests has been a point of contention between the logging industry and environmentalists.