During 1932-8 the numbers of adult Thrips imaginis in roses were counted on 1773 days, giving a continuous record for the density of the population during ... J Davidson,HG Andrewartha - 《Journal of Animal Ecology》 被引量: 243发表: 1948年 Population abundance, natural history, and habitat...
We show that there is a complex relationship between patterns of population growth and density increase by state. The largest gains in density are in the states of the northeastern megalopolis, California, and Florida. Analysis of the 150 counties with the greatest increases...
* People are not distributed evenly but tend to live in areas that are warm, have fertile soil, and are accessible to oceans.[16] [17] * Macau—a country with less than one-sixth the area of Washington, DC—has the highest population density of all nations in the world at 57,777...
3, K Daïnou2,3,4, DK Kaviriri1,5, P Gillet2,3, J Loo6, J-L Doucet3 and OJ Hardy2 Owing to the reduction of population density and/or the environmental changes it induces, selective logging could affect the demography, reproductive biology and evolutionary potential of forest trees. ...
Changewithage.human:106/100-1:1-fewermale AgeDistribution-Numberofindividualsofeachageinapop.TellsHOWapopwillgrowFig.PopulationAgeStructureDiagrams HIT EnvironmentalScience ©WangXiuheng2008 繁殖前期，繁殖期，繁殖后期。增长型，稳定型，下降型种群。Pop.DensityandSpatialDistribution种群密度与空间分布 ...
Changes in population density in areas close to train and busway stations; The population density of “new” urban residential areas in each city (are cities sprawling at low density?); and Changes in the size of the urban residential footprint of cities.I...
(Supplementary Figs.12,13), namely inter-city flows are responsible for the highest share of inflows to core counties, and intra-city flows are responsible for the highest share of inflows to external counties. We also explored the role of population density in driving netflows between counties...
Population density based on the average of all months at nighttime (a) and daytime (b). These representations cover an approximate swath of 150 km (East–West) by 100 km (North–South), and each vertical bar corresponds to a 1 × 1 km grid cell. The height of bars is linear ...
Yet, the accompanying archaeological finds document far-reaching economic exchange with neighboring groups and a population density hitherto unparalleled. We thus conclude that endogamy in the early Neolithic village of Basta was not due to geographic isolation or a lack of exogamous mating partners ...
(GRUMP)50. GHS-SMOD is a raster grid at 1 km2with each cell classified as either a rural area, town and suburb, or city. This classification is achieved via cell clustering based on estimated population size, population density and built-up area density. The GRUMP dataset includes the ...