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Showing 1 to 20 of 96 for “"range expansion"”.
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Load balancing using cell range expansion in LTE advanced heterogeneous networks
… the effects of transmit power disparity, cell range expansion is used instead of the conventional strategy. The focus of our work is on load balancing using cell range expansion (CRE) and network utility optimization techniques to ensure fair sharing of load in a macro and pico cell LTE …
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Modelling Allee effects in a transgenic mosquito population during range expansion
… and Zika. As mosquito populations expand their range into new areas, they may undergo mate-finding Allee effects such that their ability to successfully reproduce becomes difficult at low population densities. With new technology, creating target specific gene modification may now be a viable …
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Population Increase and Range Expansion of Three Psittacids in Florida and California
… of parrots found in CBC circles per year (range expansion) statistically significant linearly increased in both Florida and the United States, but range expansion in California was not significant over time.</p> <p>The reasons for these increases in number of birds might be attributed to …
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Environmental drivers of gulf coast tick range expansion in the United States
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms
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Population oscillations, synchronization, and range expansion in a bacterial cross-protection mutualism
… rescue. In addition, we explore the spatial expansion of the bacterial mutualism when subject to discrete space (a patchy environment) and discrete time (periodic growth cycles). Theoretical predictions suggest that range expansion of populations with an Allee effect (when average individual …
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Mating Habits, Dispersal and Postglacial Range Expansion of Nigronia Serricornis (Say) (Megaloptera: Corydalidae)
… diversity and the effects of post-glacial range expansion (PGRE). Haplotype diversity was significantly negatively correlated with latitude (R2 = 0.475, p = 0.002), as seen in other species experiencing PGRE in eastern North America. The 68 unique COI haplotypes recovered were distributed …
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Evolution at the edge: how hibernation, heat waves, and hybridization impact a range expansion
… which are happening on similar time scales. Range expansions, or expansions of a population's geographic distribution, were once considered strictly ecological processes of populations interacting with other populations and the environment, unaffected by evolution. However, modern theory …
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Environmental factors affecting the range expansion of Ixodes scapularis, the blacklegged tick, (Acari:Ixodidae) in Illinois
Tick-borne pathogens are zoonoses whose transmission ecology involves complex interactions among the environment, competent reservoir or reproductive hosts, ticks acting as vectors, humans and their companion animals. Ixodes scapularis (Acari:Ixodidae) Say, 1821, the blacklegged tick, is an …
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Home Range, Home Range Expansion, Dispersal, and Mortality of Juvenile Red Foxes in Southeastern South Dakota
… of dispersal for juvenile males was 59.5 km (range 10.0 - 239.0 km). Mean dispersal distance for juvenile females was 37.6 km (range 18.0 - 54.8 km). Home ranges were determined from 919 locations of 9 red foxes. Mean home range size for adults was 1193 ha (sd ± 438.4 ha), 195 ha (sd ± 29.6 …
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Predicting Spotted Knapweed (Centaurea maculosa) Range Expansion Near Missoula Montana Using Localized Climate and Elevation Data
… to a variety of habitats, including pastureland, rangeland, hay land, open forests, road sides, and ditches. In 2003 this plant species dominated more than five million acres in Montana, half of the total infestation of noxious weeds in the state. This project demonstrates the utility of using …
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Predicting Spotted Knapweed (Centaurea maculosa) Range Expansion Near Missoula Montana Using Localized Climate and Elevation Data
… to a variety of habitats, including pastureland, rangeland, hay land, open forests, road sides, and ditches. In 2003 this plant species dominated more than five million acres in Montana, half of the total infestation of noxious weeds in the state. This project demonstrates the utility of using …
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An Investigation of the Factors that Facilitate and Inhibit the Range Expansion of an Invasive Plant
… and where these factors interact to set species range limits. Filling the existing knowledge gaps is imperative for the accurate predictions of how species will respond to global change, and particularly for invasive species, many of which are expected to benefit from global change. Here, I …
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Range expansion in the invasive Round goby (Neogobius melanostomus): behavioural and gene transcriptional components of a successful invader
Range expansion of an invasive species can be influenced by intrinsic mechanisms such as behaviours described as being highly flexible and/or of specific behavioural types that are associated with dispersal ability. In addition, related gene transcription can also be influential in invasion …
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Invasion Genetics of the Blue Catfish (Ictalurus Furcatus) Range Expansion into Large River Ecosystems of the Chesapeake Bay Watershed
… Bay watershed were considerably more inbred (F ranged from 0.03 - 0.27) than four native populations (all F = 0.03) and they exhibited 12% lower allelic diversity than native populations, showing evidence consistent with a founder effect. Lack of evidence for significant bottlenecks combined …
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The Role of Artificial Structures in Facilitating Range Expansion of the Introduced Barnacle Megabalanus Coccopoma in the Southeastern U.S.A.
… the role of artificial structures in the range expansion of <em>M. coccopoma</em>, I collected demographic information on existing populations, monitored temperature and salinity both on and offshore, and assessed genetic diversity and structure at 8 research sites ranging from the …
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Genomic evidence of long-term asexuality at the northern range limit of wetland plant, Decodon verticillatus (Lythraceae)
… sexual to asexual reproduction at geographic range edges, but the impact of asexual reproduction on range expansion is largely unknown. If asexuality allows genotypes well-adapted to range edge conditions to persist long-term without recombination, this may allow plant species to expand beyond …
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Impacts of climate driven range changes on the genetics and morphology of butterflies
… genetic diversity at expanding and contracting range margins, the relative importance of genes versus environment on adaptations to dispersal and local adaptation to temperature during range expansion. Loss of genetic diversity during range expansion in Pararge aegeria was confirmed using …
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Factors affecting the dispersal of the invasive ladybirds Coccinella septempunctata and Harmonia axyridis
… hypothesis that increased dispersal ability at range expansion boundaries will be selected for. No significant difference in flight time was found between native and invasive H. axyridis populations. An explanation may be the trade off between dispersal ability and fecundity at range expansion …
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Genetic Relationships Of Wild Pigs (sus Scrofa) In The United States: Geographic Origins And Genotypic Distribution Of The Species With Implications For Management
… pigs have drastically expanded their invasive range and are now present in 44 U.S. states. Though historic records provide insights regarding original introduction histories in areas where pigs are long-established, little is known regarding sources for new populations. To develop a better …
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