![Resistance of wild Solanum accessions to aphids and other potato](http://s1.studyres.com/store/data/007764172_1-f7613dfb3f5cbdd5195d27f48cc44d37-300x300.png)
Resistance of wild Solanum accessions to aphids and other potato
... nasturtii (Hemiptera: Aphididae) may also occasionally cause serious damages and yield loss (Radcliffe 1982; Pelletier and Michaud 1995; Kaplan et al. 2008). Development of insecticide resistance (Boiteau et al. 1987; van Toor et al. 2008) and public awareness of possible health problems associated ...
... nasturtii (Hemiptera: Aphididae) may also occasionally cause serious damages and yield loss (Radcliffe 1982; Pelletier and Michaud 1995; Kaplan et al. 2008). Development of insecticide resistance (Boiteau et al. 1987; van Toor et al. 2008) and public awareness of possible health problems associated ...
Download Tech Report #129. Smith, C. W., J. Denslow, and S. Hight. Sept. 2002. Proceedings of a workshop on biological control of invasive plants in native Hawaiian ecosystems
... Hawai'i has many endemic species, a substantial percentage of which are at risk of extinction. The Hawaiian vascular plant flora includes about 1302 taxa (including subspecies and varieties) of which 1158 are endemic (Wagner et a/. 1990). Some 37% of these taxa are endangered or at risk of becoming ...
... Hawai'i has many endemic species, a substantial percentage of which are at risk of extinction. The Hawaiian vascular plant flora includes about 1302 taxa (including subspecies and varieties) of which 1158 are endemic (Wagner et a/. 1990). Some 37% of these taxa are endangered or at risk of becoming ...
Noxious Weeds in Washington State
... While many pieces of land have been set aside and protected from development and disturbance, noxious weeds are still a constant threat. Many of these invasive plants adapt to many different environments, and they readily invade our natural areas where they outcompete our native vegetation for space ...
... While many pieces of land have been set aside and protected from development and disturbance, noxious weeds are still a constant threat. Many of these invasive plants adapt to many different environments, and they readily invade our natural areas where they outcompete our native vegetation for space ...
Hemigrapsus sanguineus - Narragansett Bay National Estuarine
... “The Asian shore crab (Hemigrapsus sanguineus) was first discovered on the east coast of the U.S. in New Jersey in 1988. It is assumed that like many invasive species it was carried here in ballast water from an ocean-going vessel. Since 1988, this crab has become abundant along a large part of the ...
... “The Asian shore crab (Hemigrapsus sanguineus) was first discovered on the east coast of the U.S. in New Jersey in 1988. It is assumed that like many invasive species it was carried here in ballast water from an ocean-going vessel. Since 1988, this crab has become abundant along a large part of the ...
Representations of the ecological niche
... create interoperable software [2] [8] [41] [7] [35], for databases storing niche data (which do not exist yet) enabling search and retrieval of the niche of biological species, and to make it possible to reason about that information to generate new knowledge (alike the IKD [34] but then with a form ...
... create interoperable software [2] [8] [41] [7] [35], for databases storing niche data (which do not exist yet) enabling search and retrieval of the niche of biological species, and to make it possible to reason about that information to generate new knowledge (alike the IKD [34] but then with a form ...
Prey naivete´ in an introduced prey species: the wild rabbit in Australia
... The study was conducted at the Mallee Research Station, Walpeup (lat 3507#S, long 14201#E), north-western Victoria, Australia. The area is primarily a wheat-growing region interspersed with large patches of remnant mallee woodland, which is habitat to a range of endangered plants and wildlife; sma ...
... The study was conducted at the Mallee Research Station, Walpeup (lat 3507#S, long 14201#E), north-western Victoria, Australia. The area is primarily a wheat-growing region interspersed with large patches of remnant mallee woodland, which is habitat to a range of endangered plants and wildlife; sma ...
Vespa velutina: a new invasive predator of
... outside the nest. They could be either mated or not; the proportion of mated ones is still unknown. Depending on the species, vespid foundresses hibernate in the soil or tree crevices (Edwards 1980; Matsuura and Yamane 1990; Vetter and Visscher 1997) and V. velutina foundresses have been observed in ...
... outside the nest. They could be either mated or not; the proportion of mated ones is still unknown. Depending on the species, vespid foundresses hibernate in the soil or tree crevices (Edwards 1980; Matsuura and Yamane 1990; Vetter and Visscher 1997) and V. velutina foundresses have been observed in ...
Ecological niche of plant pathogens
... of critical factors for survival of both pathogen and host. A pragmatic approach to niche concept applied to pathogens is to consider them as an entity to be analyzed, the host - pathogen system in the environmental envelope and complex relationships build with other functional categories of organ ...
... of critical factors for survival of both pathogen and host. A pragmatic approach to niche concept applied to pathogens is to consider them as an entity to be analyzed, the host - pathogen system in the environmental envelope and complex relationships build with other functional categories of organ ...
Arbuscular mycorrhizal fungal effects on plant competition and
... found that positive effects of AMF on plant diversity and productivity declined with increasing soil P availability. Additionally, different species of AMF may have distinct colonization strategies and functional roles in nutrient uptake and pathogen protection (Maherali & Klironomos 2007). Indeed, ...
... found that positive effects of AMF on plant diversity and productivity declined with increasing soil P availability. Additionally, different species of AMF may have distinct colonization strategies and functional roles in nutrient uptake and pathogen protection (Maherali & Klironomos 2007). Indeed, ...
Impact of pocket gopher disturbance on plant species diversity in a
... disturbance (Connell 1978; Sousa 1979). These ideas contrast with the long-held view of communities as equilibrium systems, with high species diversity resulting from resource subdivision reducing severe competitive interactions (MacArthur 1972; Schoener 1974). In addition to being an important sour ...
... disturbance (Connell 1978; Sousa 1979). These ideas contrast with the long-held view of communities as equilibrium systems, with high species diversity resulting from resource subdivision reducing severe competitive interactions (MacArthur 1972; Schoener 1974). In addition to being an important sour ...
Ecological Differentiation in a Hybridizing Cryptic Species Complex By Patrick William Turko
... listed D. mendotae as one of only three animals thought to have a hybrid origin. The anthropogenic reintroduction of European D. galeata to the Great Lakes region has promoted secondary contact and hybridization, although there appears to be little introgression (Ishida and Taylor 2007). These names ...
... listed D. mendotae as one of only three animals thought to have a hybrid origin. The anthropogenic reintroduction of European D. galeata to the Great Lakes region has promoted secondary contact and hybridization, although there appears to be little introgression (Ishida and Taylor 2007). These names ...
ppt檔案
... Fig. 9.24-25 (a) conditions for the stable coexistence of two competing species. (b) outcome of competition between two species that are both more strongly limited by interspecific competition than by intraspecific competition. The populations tend to diverge from the equilibrium point. Ecology 200 ...
... Fig. 9.24-25 (a) conditions for the stable coexistence of two competing species. (b) outcome of competition between two species that are both more strongly limited by interspecific competition than by intraspecific competition. The populations tend to diverge from the equilibrium point. Ecology 200 ...
Proceedings - World Lagomorph Society
... World Lagomorph Society and the IUCN Species Survival Commission Lagomorph Specialist Group that is held every four years for researchers on wild hares, rabbits, and pikas. The 5th World Lagomorph Conference is hosted by California State University, Stanislaus, where the College of Science and the E ...
... World Lagomorph Society and the IUCN Species Survival Commission Lagomorph Specialist Group that is held every four years for researchers on wild hares, rabbits, and pikas. The 5th World Lagomorph Conference is hosted by California State University, Stanislaus, where the College of Science and the E ...
Fulltext - ETH E
... Experiments that manipulated plant species richness in temperate grasslands have generally found that species richness increased plant productivity. It has often been suggested that this is due to complementary use of resources—such as nitrogen—by plant species. Complementarity, e.g., in space, chem ...
... Experiments that manipulated plant species richness in temperate grasslands have generally found that species richness increased plant productivity. It has often been suggested that this is due to complementary use of resources—such as nitrogen—by plant species. Complementarity, e.g., in space, chem ...
Published Version
... called for field experiments addressing this issue (e.g., Oliver et al. 2014, Zytynska and Weisser 2016). Aphids are a convenient and well-suited system for this purpose. Virtually all aphids possess the obligate endosymbiont Buchnera aphidicola, which provides them with essential amino acids (Dougl ...
... called for field experiments addressing this issue (e.g., Oliver et al. 2014, Zytynska and Weisser 2016). Aphids are a convenient and well-suited system for this purpose. Virtually all aphids possess the obligate endosymbiont Buchnera aphidicola, which provides them with essential amino acids (Dougl ...
RSPCA Australia Research Report
... Another important issue is how well studies conducted overseas, particularly in the US, apply to the Australian context. The native animal populations in the two countries differ markedly. Apart from the dingo, Australia has no large, free-ranging predators as does the US. Therefore, cats are rarely ...
... Another important issue is how well studies conducted overseas, particularly in the US, apply to the Australian context. The native animal populations in the two countries differ markedly. Apart from the dingo, Australia has no large, free-ranging predators as does the US. Therefore, cats are rarely ...
Feral Swine: Impacts of Invasive Species
... Feral swine can be particularly devastating to the livestock industry within the United States. Large, widely distributed populations of feral swine jeopardize ongoing efforts to control a number of livestock diseases such as pseudo-rabies and the considerable financial investments that support thos ...
... Feral swine can be particularly devastating to the livestock industry within the United States. Large, widely distributed populations of feral swine jeopardize ongoing efforts to control a number of livestock diseases such as pseudo-rabies and the considerable financial investments that support thos ...
Non-random patterns of host use by the different parasite species
... Combes, 1995). These alterations, like those caused by C. australis (Thomas & Poulin, 1998), could also facilitate the predation of oystercatchers on infected cockles. If this is the case in the New Zealand system, then both parasite species would benefit by seeking out one another. The copepod P. s ...
... Combes, 1995). These alterations, like those caused by C. australis (Thomas & Poulin, 1998), could also facilitate the predation of oystercatchers on infected cockles. If this is the case in the New Zealand system, then both parasite species would benefit by seeking out one another. The copepod P. s ...
Caulerpa - Oregon State University
... competition and habitat modification. Caulerpa competes with other species for space and light, grows rapidly, and emits toxins into the water column. These characteristics result in the displacement of native communities and the creation of dense, uniform mats that persist throughout the year. Cons ...
... competition and habitat modification. Caulerpa competes with other species for space and light, grows rapidly, and emits toxins into the water column. These characteristics result in the displacement of native communities and the creation of dense, uniform mats that persist throughout the year. Cons ...
The assembly and disassembly of ecological networks in a changing world
... are correlated in non-trivial ways. Biodiversity loss leads to a decoupling of the correlations previously observed between stability measures. This leads to highly unpredictable dynamics of ecological communities after major disturbances. (3) When focusing on biological invasions I find that food w ...
... are correlated in non-trivial ways. Biodiversity loss leads to a decoupling of the correlations previously observed between stability measures. This leads to highly unpredictable dynamics of ecological communities after major disturbances. (3) When focusing on biological invasions I find that food w ...
article - Aquatic Invasions
... 2003; Bulleri et al. 2005). The anthropogenic removal of natural shoreline in estuaries, and its replacement with artificial surfaces such as seawalls and pilings and the modification of indigenous assemblages has been shown to create windows of opportunity for NIS to colonise habitat that might hav ...
... 2003; Bulleri et al. 2005). The anthropogenic removal of natural shoreline in estuaries, and its replacement with artificial surfaces such as seawalls and pilings and the modification of indigenous assemblages has been shown to create windows of opportunity for NIS to colonise habitat that might hav ...
Longitudinal monitoring of parasites in individual wild primates
... Due to the limited number of samples, the factors affecting the dynamics in individual mouse lemurs are difficult to analyze. It appears that sex and age do not have an effect on either parasite load or variation in parasite dynamics. Nevertheless, body condition appears to bear a consequence with t ...
... Due to the limited number of samples, the factors affecting the dynamics in individual mouse lemurs are difficult to analyze. It appears that sex and age do not have an effect on either parasite load or variation in parasite dynamics. Nevertheless, body condition appears to bear a consequence with t ...
Refuges, Biological Disturbance, and Rocky Subtidal Community Structure in New... Author(s): Jon D. Witman
... that the Modiolus community exhibited less change in species composition, dominance, and diversity than communities outside the mussel beds. Such comparisons indicate that Modiolus beds afford protection from severe grazing disturbance for infaunal invertebrates. Long-term photographic monitoring of ...
... that the Modiolus community exhibited less change in species composition, dominance, and diversity than communities outside the mussel beds. Such comparisons indicate that Modiolus beds afford protection from severe grazing disturbance for infaunal invertebrates. Long-term photographic monitoring of ...
Long-term Effects of Shifts in Grazing Pressure on
... and important livestock in the agriculture in terms of utilization of uncultivated land for meat production. The northern boreal- and alpine zone is used as grazing area during summer (Austrheim et al., 2008b), and sheep are among the most influential herbivores in these ecosystems. Livestock grazin ...
... and important livestock in the agriculture in terms of utilization of uncultivated land for meat production. The northern boreal- and alpine zone is used as grazing area during summer (Austrheim et al., 2008b), and sheep are among the most influential herbivores in these ecosystems. Livestock grazin ...
Native frog (Leiopelma spp.) recovery plan
... (Green et al. 1993). Such findings suggest that at least some conservation measures for L. hochstetteri might be best framed population by population rather than at the species level (Green 1994), even though much cytogenetic variation may occur within populations (B. Waldman, pers. comm.). Subfoss ...
... (Green et al. 1993). Such findings suggest that at least some conservation measures for L. hochstetteri might be best framed population by population rather than at the species level (Green 1994), even though much cytogenetic variation may occur within populations (B. Waldman, pers. comm.). Subfoss ...
Introduced species
![](https://commons.wikimedia.org/wiki/Special:FilePath/Melilotus_alba_bgiu.jpg?width=300)
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.