Species Diversity of Browsing and Grazing Ungulates
... envisaged that a particular combination of different herbivore species could result in a higher primary production, and because of that a higher secondary production. Even if primary production remained constant, different combination of herbivores may use it more thoroughly, leaving less of it to d ...
... envisaged that a particular combination of different herbivore species could result in a higher primary production, and because of that a higher secondary production. Even if primary production remained constant, different combination of herbivores may use it more thoroughly, leaving less of it to d ...
"SPOTTED HYENAS: MISUNDERSTOOD INDICATORS OFF
... those inhabiting the Mara Conservancy, where the relatively pristine conditions allow animals to lead a life virtually free from stressful human activity. Given the increasing fragmentation of wildlife habitat in eastern Africa, there is a critical need to develop methods for monitoring the health o ...
... those inhabiting the Mara Conservancy, where the relatively pristine conditions allow animals to lead a life virtually free from stressful human activity. Given the increasing fragmentation of wildlife habitat in eastern Africa, there is a critical need to develop methods for monitoring the health o ...
biodiversity on farmland - Bio
... This booklet is produced for New Zealand farmers and other land owners to demonstrate how biodiversity can be enhanced to give multi-value benefits for production, conservation, recreation, historical, cultural, aesthetic and Maori needs. It is an outcome of the “Strategies to Enhance Biodiversity o ...
... This booklet is produced for New Zealand farmers and other land owners to demonstrate how biodiversity can be enhanced to give multi-value benefits for production, conservation, recreation, historical, cultural, aesthetic and Maori needs. It is an outcome of the “Strategies to Enhance Biodiversity o ...
Advisory Body Evaluation (IUCN)
... On the positive side, two key actions are expected soon that will set a much firmer basis for addressing the issues. First is the passage of the regulations which will clearly specify what limits are on fisheries, immigration, etc., and will allow more effective application of the Special Law. Secon ...
... On the positive side, two key actions are expected soon that will set a much firmer basis for addressing the issues. First is the passage of the regulations which will clearly specify what limits are on fisheries, immigration, etc., and will allow more effective application of the Special Law. Secon ...
Ecological Heterogeneity in the Effects of Grazing and Fire on
... recent years, the maintenance of appropriate disturbance regimes has also become recognized as a general principle in conservation biology (e.g., Meffe & Carroll 1997 ). Yet in a world of ever-increasing movement of propagules across former biotic boundaries, wildlands managers face a fundamental di ...
... recent years, the maintenance of appropriate disturbance regimes has also become recognized as a general principle in conservation biology (e.g., Meffe & Carroll 1997 ). Yet in a world of ever-increasing movement of propagules across former biotic boundaries, wildlands managers face a fundamental di ...
THE KAZAKH STEPPE Conserving the world`s largest dry
... Kazakhstan reveals lower levels of disturbance, where as much as 36% remain in a semi-natural or natural state. Although current levels of protection in this region are also very low, the steppes of Kazakhstan have the potential to offer significant opportunities for increased conservation and prote ...
... Kazakhstan reveals lower levels of disturbance, where as much as 36% remain in a semi-natural or natural state. Although current levels of protection in this region are also very low, the steppes of Kazakhstan have the potential to offer significant opportunities for increased conservation and prote ...
Everglades Snail Kite - Wildlife Ecology and Conservation
... Loss of food supply Photo Courtesy of Dr. Wiley Kitchens ...
... Loss of food supply Photo Courtesy of Dr. Wiley Kitchens ...
Do ectotherms partition thermal resources? We still do not know
... similar scenarios for other ectotherm communities. Plastic behavioral modifications to occupy different habitats in response to competition may alter the thermal environment a species experiences, but the strongest evidence for thermal resource partitioning would comprise the evolution of different ...
... similar scenarios for other ectotherm communities. Plastic behavioral modifications to occupy different habitats in response to competition may alter the thermal environment a species experiences, but the strongest evidence for thermal resource partitioning would comprise the evolution of different ...
The Amazon River as a dispersal barrier to passerine birds: effects
... interior, although sometimes occurring at forest edges, of any type of forest. Forest canopy species inhabited the middle to upper levels (rarely in understorey) of forest interior and forest edges of any type of forest. Open country species generally occurred outside of the forest such as at forest ...
... interior, although sometimes occurring at forest edges, of any type of forest. Forest canopy species inhabited the middle to upper levels (rarely in understorey) of forest interior and forest edges of any type of forest. Open country species generally occurred outside of the forest such as at forest ...
WB_A_53-56
... Lesson Summary Primary and Secondary Succession The series of predictable changes that occurs in a community over time is called ecological succession. Over the course of succession, the number of different species usually increases. Primary succession begins in areas with no remnants of an older co ...
... Lesson Summary Primary and Secondary Succession The series of predictable changes that occurs in a community over time is called ecological succession. Over the course of succession, the number of different species usually increases. Primary succession begins in areas with no remnants of an older co ...
468-HBRC54 - Envirolink
... prey, such that a decline in prey may lead to a subsequent decline in predator numbers, leading in turn to a reduction in predation pressure on the primary prey, which may allow a recovery of prey numbers. This dynamic link does not occur between predators and a secondary prey which, if rare as a re ...
... prey, such that a decline in prey may lead to a subsequent decline in predator numbers, leading in turn to a reduction in predation pressure on the primary prey, which may allow a recovery of prey numbers. This dynamic link does not occur between predators and a secondary prey which, if rare as a re ...
The Importance of Pacific Salmon Pacific salmon are keystone
... The Importance of Pacific Salmon Pacific salmon are keystone species, which means they are essential components of their ecosystem. Their absence would result in devastating effects to other plants and wildlife species, just as the removal of a keystone from a masonry arch results in its collapse. T ...
... The Importance of Pacific Salmon Pacific salmon are keystone species, which means they are essential components of their ecosystem. Their absence would result in devastating effects to other plants and wildlife species, just as the removal of a keystone from a masonry arch results in its collapse. T ...
DRAFT BA Y-DELTA OVERSIGHT
... existence of natives. He states that, for the most part, native fishes have endured despite numerous more or less indiscriminate intentional introductions that have dominated the Delta's fish fauna for more than a century. In addition, he comments that the present declines of both native and introdu ...
... existence of natives. He states that, for the most part, native fishes have endured despite numerous more or less indiscriminate intentional introductions that have dominated the Delta's fish fauna for more than a century. In addition, he comments that the present declines of both native and introdu ...
Diversity Increases Indirect Interactions
... have strong theoretical support. For example, models indicate that nontransitive interactions among groups of competitors are a form of indirect facilitation that can promote or sustain coexistence among competitors (Laird and Schamp 2006; Allesina and Levine 2011). Nontransitive interactions may al ...
... have strong theoretical support. For example, models indicate that nontransitive interactions among groups of competitors are a form of indirect facilitation that can promote or sustain coexistence among competitors (Laird and Schamp 2006; Allesina and Levine 2011). Nontransitive interactions may al ...
Why Are There So Many of Us
... humans have culture, which permits the transmission of knowledge from one generation to others, sometimes over spans of thousands of years and thousands of generations. Human culture gives us the capacity to adapt to inhospitable circumstances and environments in ways not available to other species. ...
... humans have culture, which permits the transmission of knowledge from one generation to others, sometimes over spans of thousands of years and thousands of generations. Human culture gives us the capacity to adapt to inhospitable circumstances and environments in ways not available to other species. ...
Table of Contents - Cheetah Conservation Fund
... phenomenon. But, the current rate of extinction is something new. Today the total number of species lost each year may be nearly 40,000. This rate of extinction is far greater today than at any other time in the last 65 million years. The four most common causes of extinction created through human i ...
... phenomenon. But, the current rate of extinction is something new. Today the total number of species lost each year may be nearly 40,000. This rate of extinction is far greater today than at any other time in the last 65 million years. The four most common causes of extinction created through human i ...
disturbance moderates biodiversity–ecosystem
... of ecology for much of the past decade. Growing interest in the ecosystem-level consequences of biodiversity has been driven, in part, by our need to understand how species loss and homogenization of the world’s biota might alter ecological processes thought to sustain the Earth’s ecosystems. Resear ...
... of ecology for much of the past decade. Growing interest in the ecosystem-level consequences of biodiversity has been driven, in part, by our need to understand how species loss and homogenization of the world’s biota might alter ecological processes thought to sustain the Earth’s ecosystems. Resear ...
Effect of Parity on Productivity and Sustainability of
... bottom up forces, where the populations are resource limited by the lowestlevel species. An example of bottom up control occurs in aquatic ecosystems in temperate climate zones. The phytoplankton in the water grow rapidly during the spring when sunlight increases and the water is nutrient rich from ...
... bottom up forces, where the populations are resource limited by the lowestlevel species. An example of bottom up control occurs in aquatic ecosystems in temperate climate zones. The phytoplankton in the water grow rapidly during the spring when sunlight increases and the water is nutrient rich from ...
14. MEGAPODES IN NORTHERN AUSTRALIA: A SUMMARY OF RECENT RESEARCH
... The Orange-footed Scrubfowl has by far the largest distribution of all megapodes, being found in a multitude of islands from the Lesser Sunda Islands near Bali in Indonesia, across northern Australia and most of southern New Guinea to the Trobrian Islands off the eastern tip of Papua (Jones et al. 1 ...
... The Orange-footed Scrubfowl has by far the largest distribution of all megapodes, being found in a multitude of islands from the Lesser Sunda Islands near Bali in Indonesia, across northern Australia and most of southern New Guinea to the Trobrian Islands off the eastern tip of Papua (Jones et al. 1 ...
TOWARD A STRATEGY FOR THE CONSERVATION AND
... Here, and in other grassland regions, levels of protection often range from 1% to 3% (Table 1). The level of communication and international cooperation within the conservation community that is so often evident in other biomes such as tropical rainforests, mountains, or coral reefs has been missing ...
... Here, and in other grassland regions, levels of protection often range from 1% to 3% (Table 1). The level of communication and international cooperation within the conservation community that is so often evident in other biomes such as tropical rainforests, mountains, or coral reefs has been missing ...
Conditional outcomes in mutualistic interactions
... Compositae) naturally infested with ants and hosts from which ants had been excluded. In 1985 and 1987, ant exclusion resulted in a 54-68% decrease in the mean number of membracids per plant. However, no effect of ants was detected in 1986. The difference was not the result of ant abundance, which w ...
... Compositae) naturally infested with ants and hosts from which ants had been excluded. In 1985 and 1987, ant exclusion resulted in a 54-68% decrease in the mean number of membracids per plant. However, no effect of ants was detected in 1986. The difference was not the result of ant abundance, which w ...
Past and Present Aquatic Habitats and Fish Populations of the
... the Mississippi watershed responded to glacial expansions and contractions and sea level fluctuations, some of which inundated large parts of the LMAV. These climatic pulses generally occurred over millennia, during which time species were able to respond to change. ...
... the Mississippi watershed responded to glacial expansions and contractions and sea level fluctuations, some of which inundated large parts of the LMAV. These climatic pulses generally occurred over millennia, during which time species were able to respond to change. ...
Monitoring Ecosystem Change in Carolinian Forests and Oak
... Arboreal lichens (tree trunk dwelling lichens) are particularly good biomonitors, due to their sensitivity to environmental stress, especially air pollution, eutrophication, and climate change (Asta et al. 2002; Richardson, 1992). By tracking the composition of lichen communities over time (i.e. the ...
... Arboreal lichens (tree trunk dwelling lichens) are particularly good biomonitors, due to their sensitivity to environmental stress, especially air pollution, eutrophication, and climate change (Asta et al. 2002; Richardson, 1992). By tracking the composition of lichen communities over time (i.e. the ...
Streaked horned lark habitat selection and restoration, by Scott F
... Burns that occur more than 4 times in 17 years lower acorn production, but underburning 1 to 4 times in the same period increases production. The most productive sites were found along rivers in Klickitat County. Oregon white oak release study at Ft. Lewis, by Warren Devine and Constance Harrington ...
... Burns that occur more than 4 times in 17 years lower acorn production, but underburning 1 to 4 times in the same period increases production. The most productive sites were found along rivers in Klickitat County. Oregon white oak release study at Ft. Lewis, by Warren Devine and Constance Harrington ...
Ecology and conservation of avian insectivores
... Corlett and Primack, 2011), which can be frugivorous or insectivorous. Ant-swarm attendance, however, is not reported from Australasian rainforests. Most understory insectivores can also be placed into several broad groups based on foraging tactic (e.g., sallying species, arboreal gleaners, or terre ...
... Corlett and Primack, 2011), which can be frugivorous or insectivorous. Ant-swarm attendance, however, is not reported from Australasian rainforests. Most understory insectivores can also be placed into several broad groups based on foraging tactic (e.g., sallying species, arboreal gleaners, or terre ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.