Ecosystem resistance to invasion and the role of
... The concept of ecological resistance includes both abiotic and biotic features of a recipient environment that influence the success of propagules of a species that has not previously occurred on a site. Despite broad interest in this topic by ecologists and land managers, we lack an understanding o ...
... The concept of ecological resistance includes both abiotic and biotic features of a recipient environment that influence the success of propagules of a species that has not previously occurred on a site. Despite broad interest in this topic by ecologists and land managers, we lack an understanding o ...
Thermal sensitivity of the freshwater crayfish, Euastacus spinifer
... species. At larger spatial scales temperature is among the most important of these given its direct effects on survival, reproductive success, dispersal and behaviour. At local scales processes such as competition have been shown to be quite important for population regulation of marine species. How ...
... species. At larger spatial scales temperature is among the most important of these given its direct effects on survival, reproductive success, dispersal and behaviour. At local scales processes such as competition have been shown to be quite important for population regulation of marine species. How ...
Species Fact Sheets
... information for family forest owners As a good land steward, it is important to be aware of plant and animal species of special concern that may occur on your lands , and how forest management activities may affect these species. The Washington State Implementation Committee (WA SIC) for the Sustain ...
... information for family forest owners As a good land steward, it is important to be aware of plant and animal species of special concern that may occur on your lands , and how forest management activities may affect these species. The Washington State Implementation Committee (WA SIC) for the Sustain ...
Chapter 5 review ES
... Question • A beehive depends on pollen from flowers to survive. Flowers depend on bees to pollinate them. Humans tend bee hives, offering the bees a place to live in exchange for some of their honey. The relationship among these three sets of organisms is… ...
... Question • A beehive depends on pollen from flowers to survive. Flowers depend on bees to pollinate them. Humans tend bee hives, offering the bees a place to live in exchange for some of their honey. The relationship among these three sets of organisms is… ...
Qualitative Insight Into Public Knowledge of, and
... (Hunter and Beal, in press). Gap Analysis is a recently developed tool designed to inform conservation policy, basically allowing geographic comparison of land management status and species distributions to identify “gaps” in biodiversity protection.7 Gap areas are those in which vulnerable species ...
... (Hunter and Beal, in press). Gap Analysis is a recently developed tool designed to inform conservation policy, basically allowing geographic comparison of land management status and species distributions to identify “gaps” in biodiversity protection.7 Gap areas are those in which vulnerable species ...
Biodiversity - University of London International Programmes
... Aims of the course.......................................................................................................... 2 Learning outcomes......................................................................................................... 2 The structure of the subject guide.............. ...
... Aims of the course.......................................................................................................... 2 Learning outcomes......................................................................................................... 2 The structure of the subject guide.............. ...
Where Is the World`s Biological Diversity Found?
... on limited sampling of insects and other arthropods, groups that are thought to contain the majority of the world’s species. Reasonable estimates of the number of insect species in tropical forests range from 5 million to 10 million, though some estimates have been as high as 30 million species (Gas ...
... on limited sampling of insects and other arthropods, groups that are thought to contain the majority of the world’s species. Reasonable estimates of the number of insect species in tropical forests range from 5 million to 10 million, though some estimates have been as high as 30 million species (Gas ...
Selection criteria for suites of landscape species as a basis for site
... considered this a more robust approach because it reduced inter-site and inter-taxon biases in home range estimates. The Ndoki selection team chose to maintain home range as a continuous variable, in part because home range estimates there varied over two orders of magnitude, rendering the potential ...
... considered this a more robust approach because it reduced inter-site and inter-taxon biases in home range estimates. The Ndoki selection team chose to maintain home range as a continuous variable, in part because home range estimates there varied over two orders of magnitude, rendering the potential ...
1 2 Within plant interspecific competition does not limit the highly
... important ecosystem functions provided by diverse ecological communities. Interspecific ...
... important ecosystem functions provided by diverse ecological communities. Interspecific ...
Redalyc.Phylogenetic position of Mexican jackrabbits within the
... spanning network to evaluate relationships among Mexican species. We found 5 main phylogenetic groups within Lepus, 4 of which corresponded to geographically well defined lineages. One group included L. americanus, 3 others corresponded to Mexican, African and European species, respectively. A fifth ...
... spanning network to evaluate relationships among Mexican species. We found 5 main phylogenetic groups within Lepus, 4 of which corresponded to geographically well defined lineages. One group included L. americanus, 3 others corresponded to Mexican, African and European species, respectively. A fifth ...
pest risk assessment - Department of Primary Industries, Parks
... South Australia under the National Parks and Wildlife Act 1972. It is not listed on the IUCN Red List of Threatened Species. The species is a ‘controlled animal’ under the Tasmanian Nature Conservation Act 2002. The Lace Monitor is not considered a pest species. They have not established feral popul ...
... South Australia under the National Parks and Wildlife Act 1972. It is not listed on the IUCN Red List of Threatened Species. The species is a ‘controlled animal’ under the Tasmanian Nature Conservation Act 2002. The Lace Monitor is not considered a pest species. They have not established feral popul ...
Latitudinal gradients in biotic niche breadth vary
... n ¼ 71; lake, n ¼ 47; marine, n ¼ 28; estuarine, n ¼ 18; terrestrial, n ¼ 31) according to their designation in previous aggregations of food webs (i.e. [35–37]). As the food webs in this dataset are derived from a variety of sources and were compiled over many decades, it is likely that they vary i ...
... n ¼ 71; lake, n ¼ 47; marine, n ¼ 28; estuarine, n ¼ 18; terrestrial, n ¼ 31) according to their designation in previous aggregations of food webs (i.e. [35–37]). As the food webs in this dataset are derived from a variety of sources and were compiled over many decades, it is likely that they vary i ...
Mutualism (biology) - Basic Knowledge 101
... Phagophiles feed (resource) on ectoparasites, thereby makes its nest in special cavities in Duroia hirsute. Plants providing anti-pest service, as in cleaning symbiosis. in the vicinity that belong to other species are killed with Elacatinus and Gobiosoma, genus of gobies, also feed on formic acid. ...
... Phagophiles feed (resource) on ectoparasites, thereby makes its nest in special cavities in Duroia hirsute. Plants providing anti-pest service, as in cleaning symbiosis. in the vicinity that belong to other species are killed with Elacatinus and Gobiosoma, genus of gobies, also feed on formic acid. ...
Ecology and evolution of negative and positive interactions in
... 2011). Biodiversity changes mediated by the interaction of exotic/invasive species with native species have been documented (Callaway and Aschehoug 2000), but how cactus regeneration and diversity are affected is only starting to be understood. Knowledge of the effects of invasive species on communi ...
... 2011). Biodiversity changes mediated by the interaction of exotic/invasive species with native species have been documented (Callaway and Aschehoug 2000), but how cactus regeneration and diversity are affected is only starting to be understood. Knowledge of the effects of invasive species on communi ...
File - Oxford Megafauna conference
... the largest number of dates for any extinct megafaunal species, allowing detailed mapping of range changes in the trajectory to extinction, although direct dates for North America outside Alaska/Yukon are few. Mammoths were widespread across northern Eurasia and Beringia for much of Greenland Stadia ...
... the largest number of dates for any extinct megafaunal species, allowing detailed mapping of range changes in the trajectory to extinction, although direct dates for North America outside Alaska/Yukon are few. Mammoths were widespread across northern Eurasia and Beringia for much of Greenland Stadia ...
Evaluating condition-specific and asymmetric competition in a
... competitive interactions is modulated by abiotic factors, has been proposed as a mechanism explaining how competition may shape community structure (Dunson and Travis 1991) and species distributions (Taniguchi and Nakano 2000) by resulting in the competitive exclusion of a subordinate species when i ...
... competitive interactions is modulated by abiotic factors, has been proposed as a mechanism explaining how competition may shape community structure (Dunson and Travis 1991) and species distributions (Taniguchi and Nakano 2000) by resulting in the competitive exclusion of a subordinate species when i ...
for saving species - Threatened Species Recovery Hub
... enacted too slowly or ineffectively. Others have occurred because the severe risk of extinction was not recognised.” Projects conducted under Theme 2, aim to determine which plant and animal species are most likely to become extinct in the next 10-20 years. The projects will then identify and priori ...
... enacted too slowly or ineffectively. Others have occurred because the severe risk of extinction was not recognised.” Projects conducted under Theme 2, aim to determine which plant and animal species are most likely to become extinct in the next 10-20 years. The projects will then identify and priori ...
Vermicology I - Annelid Resources at annelida.net
... cultured in sterile soil to which soil fungi and bacteria were added, specimens failed to ...
... cultured in sterile soil to which soil fungi and bacteria were added, specimens failed to ...
Threats from Climate Change to Terrestrial Vertebrate
... Exposure of biodiversity hotspots to significant climate change, and particularly to novel climate conditions [13] will further undermine conservation efforts, potentially leading to high vulnerability for many of the species they host [14]. Therefore the identification of areas with high species ri ...
... Exposure of biodiversity hotspots to significant climate change, and particularly to novel climate conditions [13] will further undermine conservation efforts, potentially leading to high vulnerability for many of the species they host [14]. Therefore the identification of areas with high species ri ...
Species Dynamics During Early Secondary Forest Succession
... many shade-tolerant species (Holmgren & Poorter, in press). Unlike shade-tolerant taxa, few pioneers have narrowly localized or disjunctive areas, and generally occur at much higher densities (Richards et al. 1996, Holmgren et al. 2004). Hence, we expect that species richness and evenness of recruit ...
... many shade-tolerant species (Holmgren & Poorter, in press). Unlike shade-tolerant taxa, few pioneers have narrowly localized or disjunctive areas, and generally occur at much higher densities (Richards et al. 1996, Holmgren et al. 2004). Hence, we expect that species richness and evenness of recruit ...
Changes in the flora of Thoreau`s Concord
... having three or more populations in Concord, and ‘‘uncommon’’ as those having only one or two populations in Concord. We further subdivided the ‘‘uncommon’’ category into species that are rare (occur in only one place) or infrequent (occur in two places). Species are also listed as very rare if we c ...
... having three or more populations in Concord, and ‘‘uncommon’’ as those having only one or two populations in Concord. We further subdivided the ‘‘uncommon’’ category into species that are rare (occur in only one place) or infrequent (occur in two places). Species are also listed as very rare if we c ...
A complex adaptive systems approach
... functional groups would mean a higher degree of complementarity (higher range of different resources being used), and a higher number of species within functional groups would mean a higher probability for sampling effects, i.e., more efficient use of the resources that are essential for this functi ...
... functional groups would mean a higher degree of complementarity (higher range of different resources being used), and a higher number of species within functional groups would mean a higher probability for sampling effects, i.e., more efficient use of the resources that are essential for this functi ...
Biotic Resources - City of Pasadena
... continual disruption of the urban environment such as increased nitrogen deposition, air pollution, and ornamental planting. Closer to the mountains, the habitat begins to diversify and birchleaf mountain mahogany (Cercocarpus betuloides), California sagebrush (Artemisia californica), coast live oak ...
... continual disruption of the urban environment such as increased nitrogen deposition, air pollution, and ornamental planting. Closer to the mountains, the habitat begins to diversify and birchleaf mountain mahogany (Cercocarpus betuloides), California sagebrush (Artemisia californica), coast live oak ...
Macrotis lagotis, Bilby
... An updated recovery plan is in preparation. Implementation is ongoing. The national Bilby recovery team meets irregularly (every 3-4 years) as part of national arid zone threatened fauna forums. Predator control is limited to semi-captive, fenced subpopulations, except for small-scale predator contr ...
... An updated recovery plan is in preparation. Implementation is ongoing. The national Bilby recovery team meets irregularly (every 3-4 years) as part of national arid zone threatened fauna forums. Predator control is limited to semi-captive, fenced subpopulations, except for small-scale predator contr ...
The Ecological Niches of Poisonous Plants in Range Communities
... established in the physiologic systems of plants, their interactions with insects and rodents that consumed the seeds, seedlings, or herbage of the plant may have given them adaptive value. Evolution of resistance to poisons of plants by the herbivores probably has led to the proliferation of specie ...
... established in the physiologic systems of plants, their interactions with insects and rodents that consumed the seeds, seedlings, or herbage of the plant may have given them adaptive value. Evolution of resistance to poisons of plants by the herbivores probably has led to the proliferation of specie ...
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.