Resource partitioning
... The comb jelly Mnemiopsis leidyi was introduced into the Black Sea via ballast water, with many negative consequences. These and other damaging invasions have made it clear that ecologists cannot ignore the role of large-scale processes of dispersal in determining species richness at the local sca ...
... The comb jelly Mnemiopsis leidyi was introduced into the Black Sea via ballast water, with many negative consequences. These and other damaging invasions have made it clear that ecologists cannot ignore the role of large-scale processes of dispersal in determining species richness at the local sca ...
Current Understanding of Aerial Insectivore Population Declines in
... Current state of understanding about Aerial Insectivore declines Whereas earlier attention at the 2009 Aerial Insectivore workshop focused on assessing the influence of specific causes such as predation, pesticides and acid rain, recommendations from the 2012 workshop centred largely around the need ...
... Current state of understanding about Aerial Insectivore declines Whereas earlier attention at the 2009 Aerial Insectivore workshop focused on assessing the influence of specific causes such as predation, pesticides and acid rain, recommendations from the 2012 workshop centred largely around the need ...
Mechanisms driving change: altered species interactions and
... that allow the cycling of carbon, oxygen and nitrogen. ‘Function’ also includes ecosystem services such as provision of food and material to humans, the regulation of climate, provision of clean water and fertile soils (see Hector & Wilby 2009). These are in turn influenced by the numerous interactio ...
... that allow the cycling of carbon, oxygen and nitrogen. ‘Function’ also includes ecosystem services such as provision of food and material to humans, the regulation of climate, provision of clean water and fertile soils (see Hector & Wilby 2009). These are in turn influenced by the numerous interactio ...
Fresh water - Norsk institutt for naturforskning
... the environmental conditions and the most important impact factors for Red Listed species in fresh water in Norway. Fresh water is here defined as streams, rivers, ponds, lakes and systems of these, and it covers both the open water bodies themselves and their beds. Around 5 % (17 000 km2) of the ar ...
... the environmental conditions and the most important impact factors for Red Listed species in fresh water in Norway. Fresh water is here defined as streams, rivers, ponds, lakes and systems of these, and it covers both the open water bodies themselves and their beds. Around 5 % (17 000 km2) of the ar ...
Background
... in community and habitat composition, and these are likely to have important, possibly unforeseen consequences for ecosystem functioning and, in turn, provision of some goods and services on which we depend. If species are to survive under changing conditions, then landscapes will need to be suitabl ...
... in community and habitat composition, and these are likely to have important, possibly unforeseen consequences for ecosystem functioning and, in turn, provision of some goods and services on which we depend. If species are to survive under changing conditions, then landscapes will need to be suitabl ...
DIVERSITY MEASURES
... and the climates to which they are best suited. This places a premium on plant dispersal into the newly suitable areas and, indeed, threatens extinction for many species if they fail to disperse. In practice, this often requires dispersing over or around large areas of anthropogenically modified lan ...
... and the climates to which they are best suited. This places a premium on plant dispersal into the newly suitable areas and, indeed, threatens extinction for many species if they fail to disperse. In practice, this often requires dispersing over or around large areas of anthropogenically modified lan ...
128 Scientific Name: Macrochelys temminckii (previously
... Analysis of trade data obtained from the FWS Office of Law Enforcement showed that live alligator snapping turtles have been exported in increasing numbers. In 2009, data indicates that approximately 41,000 live alligator snappers were exported from the United States, with 98 percent of these shipp ...
... Analysis of trade data obtained from the FWS Office of Law Enforcement showed that live alligator snapping turtles have been exported in increasing numbers. In 2009, data indicates that approximately 41,000 live alligator snappers were exported from the United States, with 98 percent of these shipp ...
Chipmunk, Peñasco least
... forests will be key components of chipmunk habitat restoration (Frey & Boykin 2007). These recovery actions would result in collateral benefits to other plants and animals that rely on the unique ecosystem of the Sacramento Mountains (and the contiguous White Mountains), some of which are already li ...
... forests will be key components of chipmunk habitat restoration (Frey & Boykin 2007). These recovery actions would result in collateral benefits to other plants and animals that rely on the unique ecosystem of the Sacramento Mountains (and the contiguous White Mountains), some of which are already li ...
Populations, Their changes and Their measurement IB syllabus: 2.1
... Constancy = the ability of a system or population to keep its numbers within limits imposed by resources Resilience = the ability of a system to bounce back after a disturbance Diversity vs. Stability Once thought that higher diversity = more stability for a community or ecosystem Recent studies by ...
... Constancy = the ability of a system or population to keep its numbers within limits imposed by resources Resilience = the ability of a system to bounce back after a disturbance Diversity vs. Stability Once thought that higher diversity = more stability for a community or ecosystem Recent studies by ...
Historical changes in northeastern US bee
... New York State Museum, and the Bohart Museum of Entomology (University of California, Davis). To focus the geographic extent of our study area, we used records ranging from 38° to 45° N latitude and −85° to −70° W longitude (Fig. S3). This region has the most extensive historical collections of bees ...
... New York State Museum, and the Bohart Museum of Entomology (University of California, Davis). To focus the geographic extent of our study area, we used records ranging from 38° to 45° N latitude and −85° to −70° W longitude (Fig. S3). This region has the most extensive historical collections of bees ...
Invasive Species Definition Clarification and Guidance White Paper
... meet the definition of invasive, societal benefits may greatly exceed any negative effects (for example crops and livestock raised for food). However, in some cases any positive effects are clearly overshadowed by negative effects, and this is the concept of causing harm. For example, water hyacinth ...
... meet the definition of invasive, societal benefits may greatly exceed any negative effects (for example crops and livestock raised for food). However, in some cases any positive effects are clearly overshadowed by negative effects, and this is the concept of causing harm. For example, water hyacinth ...
Alternative stable states and regional community structure
... recently vacated patch may be uninvasible if the previous occupant reduced resource levels below what is required for invasion by another species. Thus, species may alter the local environment in ways that favor later colonization by conspecifics. To consider the dynamics of such a system, we modified ...
... recently vacated patch may be uninvasible if the previous occupant reduced resource levels below what is required for invasion by another species. Thus, species may alter the local environment in ways that favor later colonization by conspecifics. To consider the dynamics of such a system, we modified ...
IBAs in Danger - Birdlife Australia
... such as Yellow Crazy Ants, which threaten many species on Christmas Island. ...
... such as Yellow Crazy Ants, which threaten many species on Christmas Island. ...
2006-05-10 – Dynamic and Succession of Ecosystems
... • Secondary succession: after forest fire ¾ Spores, seeds and vegetative organs may remain viable in the soil ¾ Influx of animals and plants through dispersal and migration from the surrounding area ¾ Succession does not begin with pioneer species but with species from intermediate seres ...
... • Secondary succession: after forest fire ¾ Spores, seeds and vegetative organs may remain viable in the soil ¾ Influx of animals and plants through dispersal and migration from the surrounding area ¾ Succession does not begin with pioneer species but with species from intermediate seres ...
Untitled
... the extent that much of the current interest in them is focused on damage they cause to native populations, communities, and ecosystems, it is somewhat misaimed and constitutes wasted conservation effort. Rather, according to this line of reasoning, our concern should be aimed at species that cause ...
... the extent that much of the current interest in them is focused on damage they cause to native populations, communities, and ecosystems, it is somewhat misaimed and constitutes wasted conservation effort. Rather, according to this line of reasoning, our concern should be aimed at species that cause ...
ICZN Amendment_E-publication-PressReleaseV4
... Born Digital, Born Free? Taxonomic publishing comes of the digital age International body responsible for animal scientific names passes landmark amendment legitimising electronic publication for the first time Following four years of highly charged debate, the rules for publication of scientific na ...
... Born Digital, Born Free? Taxonomic publishing comes of the digital age International body responsible for animal scientific names passes landmark amendment legitimising electronic publication for the first time Following four years of highly charged debate, the rules for publication of scientific na ...
Indigenous knowledge and the management of marine resources in
... picture. This study was concerned with the uncertain status of the indigenous knowledge that reflects many generations of experience and problem-solving by thousands of ethnic groups across the globe. • Very little of this knowledge has been recorded, yet it represents an immensely valuable data bas ...
... picture. This study was concerned with the uncertain status of the indigenous knowledge that reflects many generations of experience and problem-solving by thousands of ethnic groups across the globe. • Very little of this knowledge has been recorded, yet it represents an immensely valuable data bas ...
Evolution of life histories: fixing the theory
... The cost function could range from linear (if we consider the direct costs, including parental care, there is no obvious reason to suggest either declining or increasing costs per offspring as litter size changes) to concave (if we also consider indirect costs, e.g. homeothermic stress, increasing ...
... The cost function could range from linear (if we consider the direct costs, including parental care, there is no obvious reason to suggest either declining or increasing costs per offspring as litter size changes) to concave (if we also consider indirect costs, e.g. homeothermic stress, increasing ...
Author`s personal copy
... emerald ash borer, including loss of timber and costs to remove trees from yards, parks, and city streets, range from the tens to the hundreds of millions of dollars for Minnesota alone, and the species has spread throughout the entire upper Midwest, meaning regional costs will be much higher. Intro ...
... emerald ash borer, including loss of timber and costs to remove trees from yards, parks, and city streets, range from the tens to the hundreds of millions of dollars for Minnesota alone, and the species has spread throughout the entire upper Midwest, meaning regional costs will be much higher. Intro ...
Omnibus Public Land Management Act of 2009—Summary
... members of federal agencies and departments, to review current scientific understanding of the impacts of climate change on freshwater resources and to develop strategies to improve this understanding. ...
... members of federal agencies and departments, to review current scientific understanding of the impacts of climate change on freshwater resources and to develop strategies to improve this understanding. ...
Development of Management Plans for the Conservation
... 6. Terrestrial ecological surveys were carried out by the consultants to determine the existing environmental conditions and to document the native and alien flora and fauna present at the study sites. The following were surveyed: habitat/vegetation types, flora (angiosperms and pteridophytes), vert ...
... 6. Terrestrial ecological surveys were carried out by the consultants to determine the existing environmental conditions and to document the native and alien flora and fauna present at the study sites. The following were surveyed: habitat/vegetation types, flora (angiosperms and pteridophytes), vert ...
Composition of Mix Species Foraging Flocks of Birds in Riverstan of
... Among these birds, Grey- headed Canary Flycatcher and Sri Lanka Scimitar Babbler contributed to form Riverstan flocks. The movement, especially vocalizations made other birds easy to follow them. Grey-headed Canary Flycatcher was the most prominent nuclear species at Riverstan and it formed 3- 10 bi ...
... Among these birds, Grey- headed Canary Flycatcher and Sri Lanka Scimitar Babbler contributed to form Riverstan flocks. The movement, especially vocalizations made other birds easy to follow them. Grey-headed Canary Flycatcher was the most prominent nuclear species at Riverstan and it formed 3- 10 bi ...
Landscapes and Their Ecological Components
... species. Each species recognizes the boundaries of the environment it inhabits, identifies those characteristics that favor its existence, and reacts to the environment on a speciesspecific scale. A landscape is therefore the sum of many species-specific systems that can be superimposed to a varying ...
... species. Each species recognizes the boundaries of the environment it inhabits, identifies those characteristics that favor its existence, and reacts to the environment on a speciesspecific scale. A landscape is therefore the sum of many species-specific systems that can be superimposed to a varying ...
Changes in nitrogen resorption traits of six temperate grassland
... (the terminal N concentration in senescent leaves, NRP) (Cote et al. 2002; Oleksyn et al. 2003; Richardson et al. 2005). It has been shown that there is no clear nutritional control on NRE, and NRE does not explain the distribution of growth-forms over habitats differing in soil N availability (Aert ...
... (the terminal N concentration in senescent leaves, NRP) (Cote et al. 2002; Oleksyn et al. 2003; Richardson et al. 2005). It has been shown that there is no clear nutritional control on NRE, and NRE does not explain the distribution of growth-forms over habitats differing in soil N availability (Aert ...
Notes towards Biodiversity Chapter 5
... Extinction events are relatively short (in terms of geological time) periods with greatly increased extinction rates (Leakey and Lewin 1995, Futuyma 1998, Futuyma 2005, Wikipedia Contributors 2006c). Extinction events form peaks on the graph shown. The definition of a mass extinction event depends ...
... Extinction events are relatively short (in terms of geological time) periods with greatly increased extinction rates (Leakey and Lewin 1995, Futuyma 1998, Futuyma 2005, Wikipedia Contributors 2006c). Extinction events form peaks on the graph shown. The definition of a mass extinction event depends ...
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.