Showing 4,801 - 4,820 results of 5,118 for search '"population density"', query time: 0.20s Refine Results
  1. 4801

    Shell-size variation of Notoacmea biradiata (Archaeogastropoda: Acmaeidae) as a response to gastropod density and height in shore in the Colombian Pacific coast by A Giraldo, C Gómez, E Rodríguez

    Published 2002-03-01
    “…Intertidal gastropod density was found to be the dominant factor in determining basal shell length (ANOVA, P < 0.001) and shell height (ANOVA P < 0.05) changes. Thus, at low population densities the shells are larger and taller. The height on the shore did not influence the shell-size of N. biradiata (ANOVA, P > 0.30). …”
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    Article
  2. 4802

    Agricultural Economic Development at the Rural-Urban Interface: Community Organization, Policy, and Agricultural Change by Jeff S. Sharp, Doug Jackson-Smith, Leah Smith

    Published 2016-07-01
    “…We also find that the counties with greater formal organizational development in support of agriculture are counties with larger populations, greater rural population densities, and larger numbers of farms compared to counties with less organizational development. …”
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    Article
  3. 4803

    Nocturnal Acidification: A Coordinating Cue in the <i>Euprymna scolopes</i>–<i>Vibrio fischeri</i> Symbiosis by Brian L. Pipes, Michele K. Nishiguchi

    Published 2022-03-01
    “…<i>V. fischeri</i> symbionts detect their population densities through a behavior termed quorum-sensing, where they secrete and detect concentrations of autoinducer molecules at high cell density when nocturnal production of bioluminescence begins. …”
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    Article
  4. 4804

    Road safety performance index: A tool for crash prediction by Lina Shbeeb

    Published 2022-12-01
    “…A checklist included 184 elements categorized into nine groups, a sample of 105 selected streets in two districts with different population densities and incomes in Amman. The road elements’ safety impact was rated by two groups (professionals and non-professionals). …”
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    Article
  5. 4805

    Efficacy of biological formulations against Neoglocianus maculaalba and Dasineura papaveris in Papaver somniferum by Pavel Kolařík, Jiří Rotrekl, Karla Kolaříková

    Published 2019-06-01
    “…Therefore, these biological insecticides are potentially useful for the effective control of N. maculaalba and D. papaveris population densities and reduction of damage they cause to breadseed poppy.…”
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    Article
  6. 4806

    Temporal Patterns in the Abundance of a Critically Endangered Marsupial Relates to Disturbance by Roads and Agriculture. by Georgina J Yeatman, Adrian F Wayne, Harriet R Mills, Jane Prince

    Published 2016-01-01
    “…The results of this study suggest that landscape disturbance is less important at peak population densities, but during times of environmental and population change, sites less dissected by roads and agriculture better support woylie populations. …”
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    Article
  7. 4807

    RELАTIONSHIP BETWEEN PОPULATION DENSITIES OF Globodera rostochiensis AND YIELD OF PОTATO CULTIVARS UNDER FIELD CONDITIONS IN BULGARIA by H. Samaliev, E. Nacheva, O. Baicheva

    Published 2016-05-01
    “…In 2010–2011, in field conditions (Smolyan potato growing region) microplots experiment have been carried out to determine the effect of population densities of Globodera rostochiensis pathotyp 3 (Ro3) on the growth and yield of two new Bulgarian potato (Solanium tuberosum L.) varieties Evridika and Orfei. …”
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    Article
  8. 4808

    Clustering Techniques for Secondary Substations Siting by Silvia Corigliano, Federico Rosato, Carla Ortiz Dominguez, Marco Merlo

    Published 2021-02-01
    “…K-means algorithm, hierarchical agglomerative clustering, and a method based on optimal weighted tree partitioning are adapted to the problem and run on two real case studies, with different population densities. The algorithms are compared in terms of different indicators useful to assess the feasibility of the solutions found. …”
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    Article
  9. 4809

    Distribution and management of non-native squirrels in Japan by Noriko Tamura, Masatoshi Yasuda

    Published 2023-01-01
    “…Because of the high population densities and significant damage caused by this species, removal measures have been implemented in at least 12 locations. …”
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    Article
  10. 4810

    SOME ECOLOGICAL ASPECTS OF TWO WHITEFLY SPECIES INFESTING ARABIAN JASMINE SHRUBS IN EGYPT (HEMIPTERA: STERNORRHYNCHA: ALEYRODI by A. Helmi

    Published 2005-09-01
    “…Each factor gave variable effects for both species while the combined effects of these nine factors were responsible as a group for about 74.2% and 95.5% of the changes in nymphal population densities of D. kirkaldyi and A. jasmini, respectively.…”
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    Article
  11. 4811

    Extinction risk modeling predicts range-wide differences of climate change impact on Karner blue butterfly (Lycaeides melissa samuelis). by Yudi Li, David Wilson, Ralph Grundel, Steven Campbell, Joseph Knight, Jim Perry, Jessica J Hellmann

    Published 2023-01-01
    “…We instead created mixed density-dependent and -independent (hereafter "endo-exogenous") models for Kbbs based on long-term count data of five isolated populations in the upper Midwest, United States during two flight periods (May to June and July to August) to understand how the growth rates were related to previous population densities and abiotic environmental conditions, including various macro- and micro-climatic variables. …”
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    Article
  12. 4812

    Escape from parasitism by the invasive alien ladybird, Harmonia axyridis by Comont, R, Purse, B, Phillips, W, Kunin, W, Hanson, M, Lewis, O, Harrington, R, Shortall, C, Rondoni, G, Roy, H

    Published 2014
    “…Alien species are often reported to perform better than functionally similar species native to the invaded range, resulting in high population densities, and a tendency to become invasive. …”
    Journal article
  13. 4813

    A non-local cross-diffusion model of population dynamics II: Exact, approximate, and numerical traveling waves in single- and multi-species populations by Krause, AL, Van Gorder, RA

    Published 2020
    “…We study traveling waves in a non-local cross-diffusion-type model, where organisms move along gradients in population densities. Such models are valuable for understanding waves of migration and invasion and how directed motion can impact such scenarios. …”
    Journal article
  14. 4814

    Insular nestling growth and its relationship to parental care effort in Silvereyes, Zosterops lateralis by Sandvig, EM, Coulson, T, Robertson, BC, Feeney, WE, Clegg, SM

    Published 2022
    “…Islands pose an interesting system to explore growth rate dynamics, because the characteristic insular features of high population densities and depauperate predator diversity translate into a potentially food limited environment with low predation risk. …”
    Journal article
  15. 4815

    Performance evaluation of wireless multicarrier modem with DQPSK modulation for HF communications by Ahmad, Abdull Zubi

    Published 2005
    “…The communications infrastructure for rural populations poses several problems which includes the generally long distances involved over which communication takes place as well as the low population densities which are also sparsely distributed. …”
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    Thesis
  16. 4816

    Comparison of gastropod mollusc (Apogastropoda: Hydrobiidae) habitats in two crater lakes in Nicaragua by Jeffrey K McCrary, Henry Madsen, Liza González, Inti Luna, Lorenzo J López

    Published 2008-03-01
    “…Snail population densities in Chara were lower at 20 m than more shallow depths in both lakes. …”
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    Article
  17. 4817
  18. 4818

    Synchaeta jollyae (Shiel & Koste) (Rotifera, Synchaetidae): an overlooked species or a newcomer in Neotropical freshwaters? by Natalia F. Negreiros, Renata M. dos Santos, Laira Lúcia Damasceno de Oliveira, Maria J. dos Santos-Wisniewski, Odete Rocha

    Published 2012-06-01
    “…Mann-Whitney test confirmed the significant difference between the population densities in periods of high and low temperatures, with populations reaching higher densities at lower temperatures. …”
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    Article
  19. 4819

    Reduced gene flow and bottleneck in the threatened giant armadillo (Priodontes maximus): implications for its conservation by Nayra T. Rodrigues, Bruno H. Saranholi, Alexandre R. Inforzato, Leandro Silveira, Arnaud Leonard Jean Desbiez, Pedro M. Galetti Jr

    Published 2024-02-01
    “…The giant armadillo Priodontes maximus is a large South American mammal threatened species, showing nocturnal, solitary and fossorial behavior, occurring at low population densities, and its population dynamics are still poorly known. …”
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    Article
  20. 4820