Species diversity patterns derived from species
... model; Cui and Lawson 1982). On the other hand, confirmation of an assumed ecological process, or one ...
... model; Cui and Lawson 1982). On the other hand, confirmation of an assumed ecological process, or one ...
UNIVERSIDAD AUT ´ONOMA DE MADRID FACULTAD DE
... related in the most important manner to other organic beings, we must see that the range of the inhabitants in any country by no means exclusively depends on insensibly changing physical conditions, but in large part on the presence of other species, on which it depends, or by which it is destroyed, ...
... related in the most important manner to other organic beings, we must see that the range of the inhabitants in any country by no means exclusively depends on insensibly changing physical conditions, but in large part on the presence of other species, on which it depends, or by which it is destroyed, ...
Cumbria Species and Habitats Statements
... Conservation Issues Overall, loss of suitable habitat has probably had the most significant effect upon Barn Owl populations. This includes the impacts of intensive agriculture, decrease in hedgerows, loss of nest and roost sites through barn conversions and the general decay of agricultural buildin ...
... Conservation Issues Overall, loss of suitable habitat has probably had the most significant effect upon Barn Owl populations. This includes the impacts of intensive agriculture, decrease in hedgerows, loss of nest and roost sites through barn conversions and the general decay of agricultural buildin ...
EN EN EXPLANATORY MEMORANDUM 1. CONTEXT OF THE
... animal husbandry, fisheries, aquaculture and forestry, suffering considerable economic damage as a result. Businesses linked to tourism and recreational activities, which rely on pristine landscapes, clean water bodies and healthy ecosystems, are often also affected. However, other small and micro e ...
... animal husbandry, fisheries, aquaculture and forestry, suffering considerable economic damage as a result. Businesses linked to tourism and recreational activities, which rely on pristine landscapes, clean water bodies and healthy ecosystems, are often also affected. However, other small and micro e ...
Bogs and Wetlands Factsheet
... By the Mesolithic period (8,000 BP) human activity appears to have started to change this landscape. Burning was used to clear the edges of woodland to encourage foraging animals like deer for hunting. This enabled small patches of blanket bog to expand into the heath and wet grassland. The tree lin ...
... By the Mesolithic period (8,000 BP) human activity appears to have started to change this landscape. Burning was used to clear the edges of woodland to encourage foraging animals like deer for hunting. This enabled small patches of blanket bog to expand into the heath and wet grassland. The tree lin ...
Chapter 43 - Leon M. Goldstein High School for the Sciences
... More than 50% of wetlands in the contiguous United States have been drained and converted to agricultural or other use ...
... More than 50% of wetlands in the contiguous United States have been drained and converted to agricultural or other use ...
Quantifying and interpreting functional diversity of natural communities
... specific traits rather than life forms determine productivity and other biogeochemical functions (e.g. Chapin 2003, Garnier et al. 2004, Quétier et al. 2006). For example, we can expect that diversity in the soil seed bank type will be more important for the community recovery after a disturbance (s ...
... specific traits rather than life forms determine productivity and other biogeochemical functions (e.g. Chapin 2003, Garnier et al. 2004, Quétier et al. 2006). For example, we can expect that diversity in the soil seed bank type will be more important for the community recovery after a disturbance (s ...
Ashton, P.M.S., and Larson, B.C. 1996. Germination and seedling
... Connell, 1989; Lorimer, 1989; Collins, 1990). These studies have been carried out in field conditions that monitored recruitment and growth of advance regeneration in situ with no control over microenvironment location or seedling age and size. This makes it difficult to measure differences in survi ...
... Connell, 1989; Lorimer, 1989; Collins, 1990). These studies have been carried out in field conditions that monitored recruitment and growth of advance regeneration in situ with no control over microenvironment location or seedling age and size. This makes it difficult to measure differences in survi ...
Sex Differences in Giraffe Feeding Ecology
... available a greater variety of food-plant species which vary in height. In such woodland habitats, females did feed at the heights of peak feeding rate. Two possible benefits might outweigh the cost females with young incur in reduced feeding rate. First, females with young may prefer more open habi ...
... available a greater variety of food-plant species which vary in height. In such woodland habitats, females did feed at the heights of peak feeding rate. Two possible benefits might outweigh the cost females with young incur in reduced feeding rate. First, females with young may prefer more open habi ...
Biodiversity and ecosystem services: does species diversity
... The attitude towards nature in society is changing. From areas that need to be protected from human activities to a position of nature in the centre of society, where ecosystems provide services for society representing the utility factor of nature: our natural capital. Examples of this changing pos ...
... The attitude towards nature in society is changing. From areas that need to be protected from human activities to a position of nature in the centre of society, where ecosystems provide services for society representing the utility factor of nature: our natural capital. Examples of this changing pos ...
Species, concepts of. In Levin, S.A.
... kind of evolution, ‘‘speciation,’’ which produces a result qualitatively different from within-population evolution, although it may of course involve the same processes. In ecology, the species is a group of individuals within which variation can often be ignored for the purposes of studying local ...
... kind of evolution, ‘‘speciation,’’ which produces a result qualitatively different from within-population evolution, although it may of course involve the same processes. In ecology, the species is a group of individuals within which variation can often be ignored for the purposes of studying local ...
Nearshore fish assemblages associated with introduced predatory
... constructed using chi‐square distance. Chi‐square distance was chosen over other resemblance measures (such as Jaccard or Copyright # 2011 John Wiley & Sons, Ltd and Her Majesty the Queen in Right of Canada. ...
... constructed using chi‐square distance. Chi‐square distance was chosen over other resemblance measures (such as Jaccard or Copyright # 2011 John Wiley & Sons, Ltd and Her Majesty the Queen in Right of Canada. ...
View contents and download Changing Seabird Management in Hawai‘i
... serious challenges to both seabirds and their ecosystems. Black, Polynesian and Norway Rats (Rattus rattus, R. exulans and R. norvegicus) and House Mice (Mus musculus) were inadvertently introduced to the islands as a result of human activity and shipwrecks. The Polynesian Rat arrived with the Polyn ...
... serious challenges to both seabirds and their ecosystems. Black, Polynesian and Norway Rats (Rattus rattus, R. exulans and R. norvegicus) and House Mice (Mus musculus) were inadvertently introduced to the islands as a result of human activity and shipwrecks. The Polynesian Rat arrived with the Polyn ...
Villy Cristensen: Using ecosystem modeling for fisheries
... Our empirical knowledge is limited • Habitat and environmental changes (including those caused by fishing) and intensive fishery removals are creating novel situations, which we can only handle with difficulty: – We do not to understand the ‘mechanics’ of ecological response well enough to be able ...
... Our empirical knowledge is limited • Habitat and environmental changes (including those caused by fishing) and intensive fishery removals are creating novel situations, which we can only handle with difficulty: – We do not to understand the ‘mechanics’ of ecological response well enough to be able ...
Least-Cost Input Mixtures of Water and Nitrogen for Photosynthesis
... higher in lower-humidity (higher VPD) habitats. The first axis in interpreting photosynthesis as a twoinput production process is water use, as represented by gs. In “The Relative Costs of Water and Nitrogen in Different Habitats,” this will be extended for understanding production in different humi ...
... higher in lower-humidity (higher VPD) habitats. The first axis in interpreting photosynthesis as a twoinput production process is water use, as represented by gs. In “The Relative Costs of Water and Nitrogen in Different Habitats,” this will be extended for understanding production in different humi ...
Scaling environmental change through the community
... Predicting ecosystem responses to global change is a major challenge in ecology. A critical step in that challenge is to understand how changing environmental conditions influence processes across levels of ecological organization. While direct scaling from individual to ecosystem dynamics can lead ...
... Predicting ecosystem responses to global change is a major challenge in ecology. A critical step in that challenge is to understand how changing environmental conditions influence processes across levels of ecological organization. While direct scaling from individual to ecosystem dynamics can lead ...
Guidlines For Offshore Marine Protected Areas In Canada Oceans
... degradation of natural resources. As a result, throughout the world some land is set aside to conserve and protect wildlife and wildlife habitat. Other lands are set aside so as not to forfeit resource development options in the future. Still other lands are allocated for the purpose of recreation, ...
... degradation of natural resources. As a result, throughout the world some land is set aside to conserve and protect wildlife and wildlife habitat. Other lands are set aside so as not to forfeit resource development options in the future. Still other lands are allocated for the purpose of recreation, ...
Crassostrea gigas, Pacific oyster - GB non
... oysters have started to form reefs consisting of dense layers which can alter the natural state of the ecosystem, posing a potential threat to native species and altering habitats, some of which are protected under European law. In the Wadden Sea it has been suggested that these reefs could cause ma ...
... oysters have started to form reefs consisting of dense layers which can alter the natural state of the ecosystem, posing a potential threat to native species and altering habitats, some of which are protected under European law. In the Wadden Sea it has been suggested that these reefs could cause ma ...
Allee Effects, Immigration, and the Evolution of Species` Niches
... population is most likely to establish when the immigration from the source to sink is at an intermediate rate (Gomulkiewicz et al. 1999). If immigration is very low, evolution in the sink population is hampered by a low rate of sampling of the genetic diversity of the source. If immigration is too ...
... population is most likely to establish when the immigration from the source to sink is at an intermediate rate (Gomulkiewicz et al. 1999). If immigration is very low, evolution in the sink population is hampered by a low rate of sampling of the genetic diversity of the source. If immigration is too ...
Allee Effects, Immigration, and the Evolution of Species
... population is most likely to establish when the immigration from the source to sink is at an intermediate rate (Gomulkiewicz et al. 1999). If immigration is very low, evolution in the sink population is hampered by a low rate of sampling of the genetic diversity of the source. If immigration is too ...
... population is most likely to establish when the immigration from the source to sink is at an intermediate rate (Gomulkiewicz et al. 1999). If immigration is very low, evolution in the sink population is hampered by a low rate of sampling of the genetic diversity of the source. If immigration is too ...
View plan for Kahuku Training Area
... to have allelopathic activity like many other members of the Myrtaceae. Herbicide Ballistic Technology™ with James Leary has been tested on a handful of plants. If aerial control techniques become available, consider targeting this species across landscape. Macaranga mappa is naturalized in Kahuku. ...
... to have allelopathic activity like many other members of the Myrtaceae. Herbicide Ballistic Technology™ with James Leary has been tested on a handful of plants. If aerial control techniques become available, consider targeting this species across landscape. Macaranga mappa is naturalized in Kahuku. ...
Nest predation in New Zealand songbirds: Exotic predators
... 1. Introduction Predation is an important ecological factor with strong implications for conservation. For example, predation was the major cause of nest failure in dozens of bird species in Europe and North America (O’Connor, 1991; Martin, 1993; Côté and Sutherland, 1995). Moreover, the loss of at ...
... 1. Introduction Predation is an important ecological factor with strong implications for conservation. For example, predation was the major cause of nest failure in dozens of bird species in Europe and North America (O’Connor, 1991; Martin, 1993; Côté and Sutherland, 1995). Moreover, the loss of at ...
Summary
... in response to fluctuating availability of critical resources such as of food and shelter, population density, environmental factors and social interactions (Wootton 1990). If resources are limiting in exploited populations, fishing would lead to reduced population size and, as a result, to increase ...
... in response to fluctuating availability of critical resources such as of food and shelter, population density, environmental factors and social interactions (Wootton 1990). If resources are limiting in exploited populations, fishing would lead to reduced population size and, as a result, to increase ...
Nesting Activity and Conservation Status of the
... The factors that are known to cause decline in sea turtle ...
... The factors that are known to cause decline in sea turtle ...
TU National Piscicide Policy
... only tool available for native fish conservation in situations where other methods are impractical or where there are mixed populations of native and non-native species. In smaller ecosystems, electrofishing is the dominant physical control method. Complete removal of non-native trout has been repo ...
... only tool available for native fish conservation in situations where other methods are impractical or where there are mixed populations of native and non-native species. In smaller ecosystems, electrofishing is the dominant physical control method. Complete removal of non-native trout has been repo ...
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.