Biologist letter on red-legged frog habitat
... Many amphibian species are in decline globally. These losses have been much publicized and biologists are often asked for an explanation of their cause. Factors leading to a reduction in amphibian numbers are usually numerous, species specific, and many variables may interact synergistically (e.g., ...
... Many amphibian species are in decline globally. These losses have been much publicized and biologists are often asked for an explanation of their cause. Factors leading to a reduction in amphibian numbers are usually numerous, species specific, and many variables may interact synergistically (e.g., ...
Desertification in Mongolia
... other windbreaks. It is estimated that over the past 30 years about 35–50 tons of soil have been lost from each hectare of cultivated land due to wind erosion alone. Half of all cultivated land in Mongolia is considered to be degraded to some degree of erosion. The annual fluctuation and slow increa ...
... other windbreaks. It is estimated that over the past 30 years about 35–50 tons of soil have been lost from each hectare of cultivated land due to wind erosion alone. Half of all cultivated land in Mongolia is considered to be degraded to some degree of erosion. The annual fluctuation and slow increa ...
Ecological Components of Endangered Forests
... Threats to native forests are severe and growing. From the onset of the Industrial Revolution, forests have undergone dramatic and widespread changes. Over the past 50 years, humans have changed natural ecosystems (including forests) faster than in any other period in human history.19 Driving many o ...
... Threats to native forests are severe and growing. From the onset of the Industrial Revolution, forests have undergone dramatic and widespread changes. Over the past 50 years, humans have changed natural ecosystems (including forests) faster than in any other period in human history.19 Driving many o ...
Bio 101 Intro to Ecology
... In many biomes, even dominant plants depend on periodic disturbance Terrestrial Biomes Terrestrial biomes can be characterized by distribution, precipitation, temperature, plants, and animals Tundra Tundra covers expansive areas of the Arctic; alpine tundra exists on high mountaintops at all latitud ...
... In many biomes, even dominant plants depend on periodic disturbance Terrestrial Biomes Terrestrial biomes can be characterized by distribution, precipitation, temperature, plants, and animals Tundra Tundra covers expansive areas of the Arctic; alpine tundra exists on high mountaintops at all latitud ...
Cranesville Swamp Trails
... The lush forest and wetlands of Cranesville Swamp are home to more than 48 rare plants and animals, including Jacob’s ladder, southern water shrew, and mountain earth snake. In addition to over 100 species of common birds that can be seen in the skies overhead, Cranesville Swamp Preserve is also an ...
... The lush forest and wetlands of Cranesville Swamp are home to more than 48 rare plants and animals, including Jacob’s ladder, southern water shrew, and mountain earth snake. In addition to over 100 species of common birds that can be seen in the skies overhead, Cranesville Swamp Preserve is also an ...
Population, community and ecosystem effects of
... on the Americas and Australia/New Zealand (Fig. 1) with much more research attention required in Africa and Asia. Another critical gap in the knowledge on the effects of introduced vertebrate herbivores in wild systems, as demonstrated with the papers in this special feature, is the lack of informat ...
... on the Americas and Australia/New Zealand (Fig. 1) with much more research attention required in Africa and Asia. Another critical gap in the knowledge on the effects of introduced vertebrate herbivores in wild systems, as demonstrated with the papers in this special feature, is the lack of informat ...
Population, community and ecosystem effects of exotic herbivores: A
... on the Americas and Australia/New Zealand (Fig. 1) with much more research attention required in Africa and Asia. Another critical gap in the knowledge on the effects of introduced vertebrate herbivores in wild systems, as demonstrated with the papers in this special feature, is the lack of informat ...
... on the Americas and Australia/New Zealand (Fig. 1) with much more research attention required in Africa and Asia. Another critical gap in the knowledge on the effects of introduced vertebrate herbivores in wild systems, as demonstrated with the papers in this special feature, is the lack of informat ...
Briefing on mangroves2 - Ministry of Environment, Lands and
... Phone: (686) 28000/28593 Fax: (686) 28334 ...
... Phone: (686) 28000/28593 Fax: (686) 28334 ...
Biodiversity and the Functioning of Selected Terrestrial Ecosystems
... Agricultural ecosystems, comprising arable land and permanent pasture, are estimated to cover 38% of the land surface of the earth. They are, therefore, a major component of the biosphere and house a large portion of the earth’s biodiversity. However, the study of the functioning of agroecosystems, ...
... Agricultural ecosystems, comprising arable land and permanent pasture, are estimated to cover 38% of the land surface of the earth. They are, therefore, a major component of the biosphere and house a large portion of the earth’s biodiversity. However, the study of the functioning of agroecosystems, ...
Habitat (which is Latin for "it inhabits") is the place where a particular
... Every organism has a unique habitat that provides for its needs. Animals and plants that live in a particular area and share the resources form a community. Within a community, organisms all have a unique niche, or role they fill to keep the community healthy. There are lots of different habitat typ ...
... Every organism has a unique habitat that provides for its needs. Animals and plants that live in a particular area and share the resources form a community. Within a community, organisms all have a unique niche, or role they fill to keep the community healthy. There are lots of different habitat typ ...
deflected succession
... Climax Community • A stable group of plants and animals that is the end result of the succession process • The climax community produced is controlled by the climate. • eg water present all year – generally woodland • distinct wet and dry seasons – grassland • wet and acidic – blanket bog • Does no ...
... Climax Community • A stable group of plants and animals that is the end result of the succession process • The climax community produced is controlled by the climate. • eg water present all year – generally woodland • distinct wet and dry seasons – grassland • wet and acidic – blanket bog • Does no ...
Ecological Succession
... disturbance such as a fire, tornado, etc...and the soil remains intact, the area begins to return to its natural community. Because these habitats previously supported life, secondary succession, unlike primary succession, begins on substrates that already bear soil. In addition, the soil contains a ...
... disturbance such as a fire, tornado, etc...and the soil remains intact, the area begins to return to its natural community. Because these habitats previously supported life, secondary succession, unlike primary succession, begins on substrates that already bear soil. In addition, the soil contains a ...
plant functional markers capture ecosystem properties during
... The main aim of this study is to test the biomass ratio hypothesis for some components of carbon and nitrogen cycles in ecosystems: primary productivity, decomposition of leaf litter, and soil carbon and nitrogen stocks. The species traits selected therefore pertain to the processing of these resour ...
... The main aim of this study is to test the biomass ratio hypothesis for some components of carbon and nitrogen cycles in ecosystems: primary productivity, decomposition of leaf litter, and soil carbon and nitrogen stocks. The species traits selected therefore pertain to the processing of these resour ...
Biotic and abiotic factors interact in complex ways in communities
... What is the difference between abiotic factors and biotic factors? What are the interactions between the levels of biological communities? What is the difference between an organism’s habitat and its niche? ...
... What is the difference between abiotic factors and biotic factors? What are the interactions between the levels of biological communities? What is the difference between an organism’s habitat and its niche? ...
Biodiversity: Patterns, Processes, Loss and Value
... regions, and incompletely sampled habitats (e.g. tropical forest canopies) continually yield “new” species. In fact, the rate of collection of these organisms greatly outpaces the ability of specialists to name, describe, and catalog them (approximately 15,000/ year, Stork 1997). In addition, there ...
... regions, and incompletely sampled habitats (e.g. tropical forest canopies) continually yield “new” species. In fact, the rate of collection of these organisms greatly outpaces the ability of specialists to name, describe, and catalog them (approximately 15,000/ year, Stork 1997). In addition, there ...
Decomposition of Leaf Litter in a U.S. Saltmarsh is Driven by
... to the sampling effect, the probability of including a particularly well-performing species will increase with species richness. Hence, performance at the community level will equal that of the best performing single species. The selection effect (Loreau and Hector 2001) or dominance effect (Fox 200 ...
... to the sampling effect, the probability of including a particularly well-performing species will increase with species richness. Hence, performance at the community level will equal that of the best performing single species. The selection effect (Loreau and Hector 2001) or dominance effect (Fox 200 ...
CF Kimberly-Clark
... West Fraser tries to improve its public image and mask its destructive logging practices by obtaining certification from the Canadian Standards Association (CSA). Whilst this certification body may sound good on paper it receives a majority of their funding from forest industry associations.18 In ad ...
... West Fraser tries to improve its public image and mask its destructive logging practices by obtaining certification from the Canadian Standards Association (CSA). Whilst this certification body may sound good on paper it receives a majority of their funding from forest industry associations.18 In ad ...
In Retrospect: The book that began invasion ecology
... that can control invaders, whereas simpler food webs are more vulnerable to population explosions. As evidence, he pointed to the disproportionate numbers of invaders in environments such as remote islands and boreal forests, and those on cultivated land and in other environments that have been dras ...
... that can control invaders, whereas simpler food webs are more vulnerable to population explosions. As evidence, he pointed to the disproportionate numbers of invaders in environments such as remote islands and boreal forests, and those on cultivated land and in other environments that have been dras ...
Progress with Assessment of Data-Limited Stocks
... sensitive, by designating them as protected areas. In such areas, it should be possible to restrict or to prohibit fishing activities. When deciding which areas to designate, particular attention should be paid to those in which there is clear evidence of heavy concentrations of fish below minimum c ...
... sensitive, by designating them as protected areas. In such areas, it should be possible to restrict or to prohibit fishing activities. When deciding which areas to designate, particular attention should be paid to those in which there is clear evidence of heavy concentrations of fish below minimum c ...
FORESTRY 215 - FOREST ECOLOGY SYLLABUS SPRING 2017
... By the end of the course, students should be able to read the lay of the land in relation to how productive and diverse different locations are likely to be, what disturbances and other abiotic factors are likely to be important, what stages of succession and forest development are present, and how ...
... By the end of the course, students should be able to read the lay of the land in relation to how productive and diverse different locations are likely to be, what disturbances and other abiotic factors are likely to be important, what stages of succession and forest development are present, and how ...
Slide 1
... From D’Antonio et al. (2000) Series of 14 study sites (#’s) from eastern coastal lowlands to seasonal submontane zone on Big Island, Hawaii Lowlands: warm tropical zone with 1500-2000 mm yr-1, but dry summers; elevation from sea level to 400 m Submontane: several °C cooler, but similar amount and se ...
... From D’Antonio et al. (2000) Series of 14 study sites (#’s) from eastern coastal lowlands to seasonal submontane zone on Big Island, Hawaii Lowlands: warm tropical zone with 1500-2000 mm yr-1, but dry summers; elevation from sea level to 400 m Submontane: several °C cooler, but similar amount and se ...
BIO 150
... 12. What is the significance of the (i) Arctic circle, (ii) summer solstice (June 21) and (iii) the spring and fall equinox (Mar 21, Sept 21)? 13. Why is it colder at the poles than the equator? 14. Biomes provide a striking example of a match between organisms and their environment on a broad geogr ...
... 12. What is the significance of the (i) Arctic circle, (ii) summer solstice (June 21) and (iii) the spring and fall equinox (Mar 21, Sept 21)? 13. Why is it colder at the poles than the equator? 14. Biomes provide a striking example of a match between organisms and their environment on a broad geogr ...
Habitat Modelling, by Guillem Chust - EURO
... Atlantic Ocean indicate that zooplankton exhibit distribution range shifts in response to global warming that are among the fastest and largest of any marine or terrestrial group (Beaugrand et al., 2002 Science). • Warming of the North Atlantic basin (35º to 65º) at all latitudes in 1960-2004: ...
... Atlantic Ocean indicate that zooplankton exhibit distribution range shifts in response to global warming that are among the fastest and largest of any marine or terrestrial group (Beaugrand et al., 2002 Science). • Warming of the North Atlantic basin (35º to 65º) at all latitudes in 1960-2004: ...
Life histories
... But small size can allow early stages to do things that are impossible for adult stages. Organisms have various mechanisms to protect the small life stages. ...
... But small size can allow early stages to do things that are impossible for adult stages. Organisms have various mechanisms to protect the small life stages. ...
Black cockatoos - WWF
... Cockatoos are similar to parrots in many ways including having a curved beak and what’s known as a zygodactyl foot, which means two toes face forward and two face backwards. However, cockatoos do have unique features that parrots don’t have such as a gall bladder and a moveable crest on top of their ...
... Cockatoos are similar to parrots in many ways including having a curved beak and what’s known as a zygodactyl foot, which means two toes face forward and two face backwards. However, cockatoos do have unique features that parrots don’t have such as a gall bladder and a moveable crest on top of their ...
Biological Dynamics of Forest Fragments Project
The Biological Dynamics of Forest Fragments Project, originally called the Minimum Critical Size of Ecosystems Project is a large-scale ecological experiment looking at the effects of habitat fragmentation on tropical rainforest; it is one of the most expensive biology experiments ever run. The experiment, which was established in 1979 is located near Manaus, in the Brazilian Amazon. The project is jointly managed by the Smithsonian Institution and INPA, the Brazilian Institute for Research in the Amazon.The project was initiated in 1979 by Thomas Lovejoy to investigate the SLOSS debate. Initially named the Minimum Critical Size of Ecosystems Project, the project created forest fragments of sizes 1 hectare (2 acres), 10 hectares (25 acres), and 100 hectares (247 acres). Data were collected prior to the creation of the fragments and studies of the effects of fragmentation now exceed 25 years.As of October 2010 562 publications and 143 graduate dissertations and theses had emerged from the project.