Relationship between evenness and body size in species rich
... reveal a complex relationship between evenness and species richness [3,4]. Evenness tends to decline as richness increases [5], but this pattern varies across assemblages. Research on plant communities [6,7–9] led Wilsey & Stirling [10] to conclude that richness and evenness are influenced by differ ...
... reveal a complex relationship between evenness and species richness [3,4]. Evenness tends to decline as richness increases [5], but this pattern varies across assemblages. Research on plant communities [6,7–9] led Wilsey & Stirling [10] to conclude that richness and evenness are influenced by differ ...
ALOACEAE The Aloaceae is a medium
... Haw. (Smith 1993a) and A. vossii Reynolds (Willis & Willis 1995). Hilton-Taylor & Smith (1994) were the first to provide a comprehensive synopsis of the conservation status of southern African Aloe and its generic relatives. For example, they cite that, apart from illegal collecting activities, othe ...
... Haw. (Smith 1993a) and A. vossii Reynolds (Willis & Willis 1995). Hilton-Taylor & Smith (1994) were the first to provide a comprehensive synopsis of the conservation status of southern African Aloe and its generic relatives. For example, they cite that, apart from illegal collecting activities, othe ...
http://www.ca.blm.gov/pdfs/palmsprings_pdfs/pdfs_coachella/Glossary.pdf
... established population range to maintain a thriving natural ecological balance, based on available forage, water, and other resource needs or conflicts (relating to management of wild horses and burros). Aquifer: A water bearing unit of permeable rock or sediment that is capable of yielding water to ...
... established population range to maintain a thriving natural ecological balance, based on available forage, water, and other resource needs or conflicts (relating to management of wild horses and burros). Aquifer: A water bearing unit of permeable rock or sediment that is capable of yielding water to ...
and mimetic patterns on tropical Paciflc archipelagos
... plexippus was excluded from analysis because of likely anthropogenic introductions (see e.g. Scudder, 1875; Vane-Wright, 1993). For both intra- and interarchipelago analyses, simple log-log and stepwise linear regressions were used to determine the importance of aforementioned geographical features ...
... plexippus was excluded from analysis because of likely anthropogenic introductions (see e.g. Scudder, 1875; Vane-Wright, 1993). For both intra- and interarchipelago analyses, simple log-log and stepwise linear regressions were used to determine the importance of aforementioned geographical features ...
2.4.2 Zonation and Succession
... Stage 3 Competition: Microclimate continues to change as new species colonize. Larger plants increase cover and provide shelter, enabling K-selected species to become established. Temperature, sun and wind are less extreme. Earlier pioneer r-species are unable to compete with K species for space, nu ...
... Stage 3 Competition: Microclimate continues to change as new species colonize. Larger plants increase cover and provide shelter, enabling K-selected species to become established. Temperature, sun and wind are less extreme. Earlier pioneer r-species are unable to compete with K species for space, nu ...
Invasive Species
... The Department of Sustainability and Environment have published Guidelines and Procedures for Managing the Environmental Impacts of Weeds on Public Land in Victoria 2007 The Guidelines provide a decision-support system to enable public land managers to prioritise locations and resources for weed ma ...
... The Department of Sustainability and Environment have published Guidelines and Procedures for Managing the Environmental Impacts of Weeds on Public Land in Victoria 2007 The Guidelines provide a decision-support system to enable public land managers to prioritise locations and resources for weed ma ...
Gibraltar Rock Fauna - Dubbo Field Nats Home
... for habitat description having no trees with diameters over 40 centimetres. Around the footslopes up to six trees per hectare were estimated to contain hollows and two dead trees per hectare also contained hollows for potential wildlife utilisation. Hollow logs are common on the ground, especially a ...
... for habitat description having no trees with diameters over 40 centimetres. Around the footslopes up to six trees per hectare were estimated to contain hollows and two dead trees per hectare also contained hollows for potential wildlife utilisation. Hollow logs are common on the ground, especially a ...
Assembly history dictates ecosystem functioning
... comprehensive understanding of ecosystem functioning. Potential links between assembly history, community structure and ecosystem functioning are not necessarily straightforward. For example, even a small historical effect on community structure may result in large variation in ecosystem functioning ...
... comprehensive understanding of ecosystem functioning. Potential links between assembly history, community structure and ecosystem functioning are not necessarily straightforward. For example, even a small historical effect on community structure may result in large variation in ecosystem functioning ...
ppt
... - but since size is an important correlate to resource use, at some point a species will do better "off the optimum", rather than competing with lots of species on the optimum....this is not as great a size class, so species will move to new size class to avoid competition more rapidly...small size ...
... - but since size is an important correlate to resource use, at some point a species will do better "off the optimum", rather than competing with lots of species on the optimum....this is not as great a size class, so species will move to new size class to avoid competition more rapidly...small size ...
III. Filipponi Packard
... Filipponi Packard area has been divided into two areas, Filipponi Packard I and Filipponi Packard II, due to differences in the monitoring methods for these areas. Packard I refers to the area located at the upland northern side of the east fork of San Luis Obispo Creek; Packard II (downstream from ...
... Filipponi Packard area has been divided into two areas, Filipponi Packard I and Filipponi Packard II, due to differences in the monitoring methods for these areas. Packard I refers to the area located at the upland northern side of the east fork of San Luis Obispo Creek; Packard II (downstream from ...
abstracts - Santa Fe Institute
... on species distribution from answering three questions. (1) How does the distribution of species change across spatial scales? (2) Are there any general scaling relationships that may underlie the various forms of distribution? (3) Are there differences in the distribution between rare and common sp ...
... on species distribution from answering three questions. (1) How does the distribution of species change across spatial scales? (2) Are there any general scaling relationships that may underlie the various forms of distribution? (3) Are there differences in the distribution between rare and common sp ...
4 Impacts of significant invasive vertebrate pests
... production systems, changes in animal populations and production, spread of human and livestock disease, change in ecosystem structure, and species extinction (Hone 1994). At present, many invasive animals are listed under state and Commonwealth threatened species legislation as ‘key threatening pro ...
... production systems, changes in animal populations and production, spread of human and livestock disease, change in ecosystem structure, and species extinction (Hone 1994). At present, many invasive animals are listed under state and Commonwealth threatened species legislation as ‘key threatening pro ...
Interactions between two endangered butterflies and invasive, exotic
... when the grass flowers and begins to set seed (Wilson and Clark 2001). However, active season mowing would cooccur with Fender’s blue flight, oviposition, and pre-diapause larval feeding. Kincaid’s lupine plants are tall enough that setting most mechanical mowers to the highest off-the-ground mow de ...
... when the grass flowers and begins to set seed (Wilson and Clark 2001). However, active season mowing would cooccur with Fender’s blue flight, oviposition, and pre-diapause larval feeding. Kincaid’s lupine plants are tall enough that setting most mechanical mowers to the highest off-the-ground mow de ...
Trophic niches of thirteen damselfishes (Pomacentridae) at the
... 2005). Diverse topics on coral reef ecology related to the diet of some damselfishes have been investigated. For instance, the effects of herbivorous damselfishes on benthic communities are increasingly being studied (Hata and Kato 2002; Gobler et al. 2006; Ceccarelli 2007). Damselfishes have also s ...
... 2005). Diverse topics on coral reef ecology related to the diet of some damselfishes have been investigated. For instance, the effects of herbivorous damselfishes on benthic communities are increasingly being studied (Hata and Kato 2002; Gobler et al. 2006; Ceccarelli 2007). Damselfishes have also s ...
Using home-range data to optimise the control of invasive animals
... management scenarios with other invasive species where it is not necessary to strive to intersect 100% of the home ranges of the target animal in the management area. The simulation we have described can be used to determine the probability of parallel lines intersecting whatever proportion of home ...
... management scenarios with other invasive species where it is not necessary to strive to intersect 100% of the home ranges of the target animal in the management area. The simulation we have described can be used to determine the probability of parallel lines intersecting whatever proportion of home ...
Wildlife Management Concepts and Terms
... are somewhat similar. They both require early successional cover, share some food resources, obtain water from plants and require relatively little area when food and cover resources are abundant. However, habitat requirements for Eastern gray squirrel and mourning dove are dramatically different, a ...
... are somewhat similar. They both require early successional cover, share some food resources, obtain water from plants and require relatively little area when food and cover resources are abundant. However, habitat requirements for Eastern gray squirrel and mourning dove are dramatically different, a ...
Habitat filtering by landscape and local forest composition in native
... investigated coexistence patterns in New Zealand exotic and native birds along multiple-scale habitat gradients. We built a Bayesian hierarchical model, contrasting the abundance variations of 10 native and 11 exotic species in 501 point counts spread along landscape and local-scale gradients of for ...
... investigated coexistence patterns in New Zealand exotic and native birds along multiple-scale habitat gradients. We built a Bayesian hierarchical model, contrasting the abundance variations of 10 native and 11 exotic species in 501 point counts spread along landscape and local-scale gradients of for ...
Invasive Animals Cooperative Research Centre
... discuss advances and potential new directions in feral cat management. The workshop, funded by the Australian Government Department of the Environment, coincides with the Minister for the Environment recently releasing for comment the draft ‘Threat abatement plan for predation by feral cats’, which ...
... discuss advances and potential new directions in feral cat management. The workshop, funded by the Australian Government Department of the Environment, coincides with the Minister for the Environment recently releasing for comment the draft ‘Threat abatement plan for predation by feral cats’, which ...
Press Release (ENG): Mohamed bin Zayed Species Conservation
... The student-work will help the MBZ Fund launch a global campaign to raise awareness of dugong and seagrass and to help conserve them throughout their range. Seagrass ecosystems are regarded as important as coral reef systems because they are critical to the success of coastal fisheries. Seagrass als ...
... The student-work will help the MBZ Fund launch a global campaign to raise awareness of dugong and seagrass and to help conserve them throughout their range. Seagrass ecosystems are regarded as important as coral reef systems because they are critical to the success of coastal fisheries. Seagrass als ...
1 BIOL B242 Evolutionary Genetics: Coevolution What is
... Ø Protective coverings such as shells or hard bony plates Ø Defensive weapons, such as stings or horns Ø Defensive coloration (see mimicry lecture) Ø Unpalatability and nastiness ...
... Ø Protective coverings such as shells or hard bony plates Ø Defensive weapons, such as stings or horns Ø Defensive coloration (see mimicry lecture) Ø Unpalatability and nastiness ...
Southeastern Arizona Monitoring Program
... the sheet, writing as largely and legibly as possible. 3. In all, at least five different pictures need to be taken. Pictures need to taken in the direction the transect runs and in each of the four cardinal directions. a. The use of a compass is a good way to ensure that you are taking the photogra ...
... the sheet, writing as largely and legibly as possible. 3. In all, at least five different pictures need to be taken. Pictures need to taken in the direction the transect runs and in each of the four cardinal directions. a. The use of a compass is a good way to ensure that you are taking the photogra ...
Dispersal in Marine Organisms without a Pelagic Larval Phase
... (down to 10 mm in length) than were the two other species of Caulerpa found in Hawaii. A management plan that involved breaking the alga into fragments would be doomed to increase the species abundance and range, instead of controlling it. C. taxifolia has all the characteristics of a good invader, ...
... (down to 10 mm in length) than were the two other species of Caulerpa found in Hawaii. A management plan that involved breaking the alga into fragments would be doomed to increase the species abundance and range, instead of controlling it. C. taxifolia has all the characteristics of a good invader, ...
Effect of Some Environmental Factors on Plant Species Diversity in
... the availability of seed sources in the surrounding areas, species evenness is more likely to be affected by the abiotic and biotic properties of local habitats (Triin Reitalu et al., 2009). Several other studies have concluded that species evenness may show a stronger association (than species rich ...
... the availability of seed sources in the surrounding areas, species evenness is more likely to be affected by the abiotic and biotic properties of local habitats (Triin Reitalu et al., 2009). Several other studies have concluded that species evenness may show a stronger association (than species rich ...
Distributions of Communities in time
... associations) had enough of the characters of organisms to be considered as quasi-organism, in the same way that human societies are habitually so considered. The comparison with an organism is not merely a loose analogy but is firmly based. For Clements the plant community is an organism, and he wh ...
... associations) had enough of the characters of organisms to be considered as quasi-organism, in the same way that human societies are habitually so considered. The comparison with an organism is not merely a loose analogy but is firmly based. For Clements the plant community is an organism, and he wh ...
Resource partitioning
... To explain how diatom species coexist in nature, he proposed the resource ratio hypothesis—species coexist by using resources in different proportions. Two diatom species were grown in media with different SiO2:PO4 ratios. Tillman found that Cyclotella dominated only when the ratio was low, Aste ...
... To explain how diatom species coexist in nature, he proposed the resource ratio hypothesis—species coexist by using resources in different proportions. Two diatom species were grown in media with different SiO2:PO4 ratios. Tillman found that Cyclotella dominated only when the ratio was low, Aste ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.