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1. Constant change of LBK settlement in the upper Danube region

Author:
Pechtl, Joachim
Source:
Quaternary international 2020
ISSN:
1040-6182
Subject:
population density,   etc   ; agricultural land; human settlements; Germany;     Show all 4 Subjects
Abstract:
... In general, the LBK is considered a very assertive cultural phenomenon characterized by rapid expansion and subsequent high population density in agriculturally favorable areas. On the one hand, for the first time larger and long-term populated places were created, on the other hand, a strong colonial tendency is obvious. A closer look at the settlement areas on the upper Danube in Bavaria and Bad ...
DOI:
10.1016/j.quaint.2020.04.016

2. Are bolder individuals more likely to choose heterospecific mates? A test in cyprinid fishes

Author:
Atsumi, Keisuke; Koizumi, Itsuro
Source:
Journal of ethology 2020 v.38 no.2 pp. 247-251
ISSN:
0289-0771
Subject:
population density,   etc   ; Cyprinidae; environmental factors; females; males; mating behavior; phenotype;     Show all 7 Subjects
Abstract:
... Mating between different species is ubiquitous in nature. While environmental conditions and population density have been shown to affect the occurrence of heterospecific matings, much less is known about the potential role of individual characteristics. Here, we examined the association between boldness and mate choice to con- and heterospecifics in a cyprinid fish (Pseudaspius sachalinensis) whi ...
DOI:
10.1007/s10164-020-00646-2

3. Meta-community selection favours reciprocal cooperation but depresses exploitation between competitors

Author:
Yan, Chuan; Zhang, Zhibin
Source:
Ecological complexity 2019 v.37 pp. 55-62
ISSN:
1476-945X
Subject:
population density,   etc   ; mutualism; selection pressure;     Show all 3 Subjects
Abstract:
... The evolution of cooperation and mutualism has mainly been explored through individual- and group-level processes. However, community-level processes could also impose selection pressure on species interactions. By using a dome-shaped nonmonotonic interaction (DS interaction) with cooperation at low-density and competition at high-density, we studied how cooperation and exploitation are selected a ...
DOI:
10.1016/j.ecocom.2018.11.001

4. Does urbanization drive economic growth decoupled from energy consumption in China’s logistics?

Author:
LIU, Bingquan; Su, Xuelin; Shi, Junxue; Hou, Rui
Source:
Journal of cleaner production 2020 v.257 pp. 120468
ISSN:
0959-6526
Subject:
population density,   etc   ; e-commerce; energy; issues and policy; models; pollution; urbanization; China;     Show all 8 Subjects
Abstract:
... Logistics has gradually become a major energy consumer in China along with urbanization and e-commerce. A better understanding of economic growth decoupled from energy consumption in logistics could relieve the pressure of energy supply and environmental pollution. A combined model based on the Tapio decoupling model, Kaya identity and Log-Mean Divisia Index was proposed to decompose the impact of ...
DOI:
10.1016/j.jclepro.2020.120468

5. Mapping ecosystem services bundles for analyzing spatial trade-offs in inner Mongolia, China

Author:
Dou, Huashun; Li, Xiaobing; Li, Shengkun; Dang, Dongliang; Li, Xiang; Lyu, Xin; Li, Mengyuan; Liu, Siyu
Source:
Journal of cleaner production 2020 v.256 pp. 120444
ISSN:
0959-6526
Subject:
population density,   etc   ; case studies; ecosystem services; semiarid zones; socioeconomic factors; soil properties; sustainable development; temperature; China;     Show all 9 Subjects
Abstract:
... Managing multiple ecosystem services (ESs) to facilitate synergy benefits is a crucial but challenging task for sustainable development, especially in arid and semi-arid regions. In this paper, the Inner Mongolia was used as a case study to systematically analyze the spatial trade-offs and synergies between 12 ESs consisting of 88 counties using the framework of ecosystem service bundle. We mapped ...
DOI:
10.1016/j.jclepro.2020.120444

6. Modeling the spatial variations in anthropogenic factors of soil heavy metal accumulation by geographically weighted logistic regression

Author:
Zhang, Chutian; Yang, Yong
Source:
The Science of the total environment 2020 v.717 pp. 137096
ISSN:
0048-9697
Subject:
population density,   etc   ; heavy metals; industry; kriging; lead; models; regression analysis; risk; soil; soil remediation;     Show all 10 Subjects
Abstract:
... Quantifying the impacts of associated factors on soil heavy metal (HM) accumulation and mapping the accumulation risks can provide valuable information for the soil remediation and protection. This study investigates the risk of soil HM accumulation and its relationships with human activities, which were expressed by weighted industry distance (WID), weighted road density (WRD), and population den ...
DOI:
10.1016/j.scitotenv.2020.137096

7. Spatial projections of solar PV installations at subnational level: Accuracy testing of regression models

Author:
Müller, Jonas; Trutnevyte, Evelina
Source:
Applied energy 2020 v.265 pp. 114747
ISSN:
0306-2619
Subject:
population density,   etc   ; data collection; electricity; electricity costs; infrastructure; models; planning; regression analysis; solar energy; Switzerland;     Show all 10 Subjects
Abstract:
... As the growth of solar photovoltaics (PV) accelerates, spatial PV projections at subnational level are necessary for planning grid infrastructure and addressing demand-supply balancing challenges, posed by this intermittent source of electricity. Although spatial models of weather-dependent PV productivity are common, few studies have focused on projections of PV installations. This study uses a c ...
DOI:
10.1016/j.apenergy.2020.114747

8. Chemically reactive membrane crystallisation reactor for CO2–NH3 absorption and ammonium bicarbonate crystallisation: Kinetics of heterogeneous crystal growth

Author:
Bavarella, S.; Brookes, A.; Moore, A.; Vale, P.; Di Profio, G.; Curcio, E.; Hart, P.; Pidou, M.; McAdam, E.J.
Source:
Journal of membrane science 2020 v.599 pp. 117682
ISSN:
0376-7388
Subject:
population density,   etc   ; absorption; ammonia; ammonium; ammonium bicarbonate; artificial membranes; carbon dioxide; carbonic acid; crystallization; pH;     Show all 10 Subjects
Abstract:
... The feasibility of gas-liquid hollow fibre membrane contactors for the chemical absorption of carbon dioxide (CO₂) into ammonia (NH₃), coupled with the crystallisation of ammonium bicarbonate has been demonstrated. In this study, the mechanism of chemically facilitated heterogeneous membrane crystallisation is described, and the solution chemistry required to initiate nucleation elucidated. Induct ...
DOI:
10.1016/j.memsci.2019.117682

9. Socioecology of a high-density brown hyaena population within an enclosed reserve

Author:
Edwards, Sarah; Noack, Jenny; Heyns, Louis; Rodenwoldt, Diethardt; Tarjan, L Max
Source:
Mammal research 2020 v.65 no.2 pp. 223-233
ISSN:
2199-2401
Subject:
population density,   etc   ; Hyaena; cameras; conservation areas; home range; spatial data; wildlife; Namibia;     Show all 8 Subjects
Abstract:
... Understanding the spatial ecology of wildlife is an essential prerequisite for making informed management decisions and is of particular importance for those species residing in enclosed reserves where space use may be influenced by restricted dispersal and high population densities. As the brown hyaena Parahyaena brunnea is a species likely to increasingly rely on enclosed protected areas for its ...
DOI:
10.1007/s13364-020-00477-z

10. Spatial and big data analytics of E-market transaction in China

Author:
Ye, Xinyue; Lian, Zeng; She, Bing; Kudva, Sonali
Source:
GeoJournal 2020 v.85 no.2 pp. 329-341
ISSN:
0343-2521
Subject:
population density,   etc   ; data analysis; economic development; industry; models; river deltas; rivers; China; Yangtze River;     Show all 9 Subjects
Abstract:
... This study uses a big data approach and gravity model to quantify the scope and sources of online transactions in urban China and explore the driving forces, based on data from the Taobao platform for online cellphone transactions from June to December in 2011. Comparison among Jing-Jin-Ji Region, Yangtze River Delta, and Pearl River Delta shows that a higher level of economic development correspo ...
DOI:
10.1007/s10708-018-09964-y

11. Distribution pattern and sequential sampling plan for chilli thrips, Scirtothrips dorsalis Hood (Thripidae: Thysanoptera)

Author:
Prasannakumar, N. R.; Prasad, B. S. Rajendra; Bhat, P. Shivarama
Source:
International journal of tropical insect science 2020 v.40 no.1 pp. 131-139
ISSN:
1742-7592
Subject:
population density,   etc   ; Scirtothrips dorsalis; developmental stages; sample size; sequential sampling; summer; variance;     Show all 7 Subjects
Abstract:
... Spatial distribution and sequential sampling plan for chilli thrips, Scirtothrips dorsalis Hood were analyzed through Taylor’s power law (TPL) and Iwao’s mean crowding regression (IMC) for rainy and summer seasons during 2016–17 on chilli crop. The results revealed that the mean number of thrips in the field was low (1.07 thrips/plant) at early crop growth stages (32 days after transplanting (DAT) ...
DOI:
10.1007/s42690-019-00062-1

12. Effects of exogenous lanthanum(III) exposure on the positive interaction between mutually beneficial populations

Author:
Huang, Jialing; Hu, Xianda; Wang, Lihong; Zhou, Qing; Huang, Xiaohua
Source:
Chemosphere 2020 v.242 pp. 125142
ISSN:
0045-6535
Subject:
population density,   etc   ; Glycine max; Triticum aestivum; lanthanum; nutrient content; risk; soybeans; wheat;     Show all 8 Subjects
Abstract:
... Rare earth elements (REEs) are widely used in various fields, and their accumulation has been reported to pose environmental risks. Most studies confirmed the damage of excessive REE exposure to individual plants; however, little attention has been given to their effects on plant populations. A positive interaction indicates a mutually beneficial relationship between two populations, which is bene ...
DOI:
10.1016/j.chemosphere.2019.125142

13. Is there a link between air pollution and impaired memory? Evidence on 34,000 english citizens

Author:
Powdthavee, Nattavudh; Oswald, Andrew J.
Source:
Ecological economics 2020 v.169 pp. 106485
ISSN:
0921-8009
Subject:
population density,   etc   ; air pollution; humans; memory; nitrogen dioxide; particulates; rats; social welfare; wind direction; England;     Show all 10 Subjects
Abstract:
... It is known that people feel less happy in areas with higher levels of nitrogen dioxide NO2 (MacKerron and Mourato, 2009). What else might air pollution do to human wellbeing? This paper uses data on a standardized word-recall test that was done in the year 2011 by 34,000 randomly sampled English citizens across 318 geographical areas. We find that human memory is worse in areas where NO2 and PM10 ...
DOI:
10.1016/j.ecolecon.2019.106485

14. Spatiotemporal disequilibrium and spillover effect of fine particulate matter across China

Author:
Xu, Lizhong; Zhong, Xuefen; Chen, Fang; Ye, Ruping; Zhang, Li'e; Wu, Xueling; Deng, Jiamin; Li, Jiabing; Chen, Fen
Source:
The Science of the total environment 2020 v.704 pp. 135422
ISSN:
0048-9697
Subject:
population density,   etc   ; air pollutants; air pollution; air pollution control; cities; monitoring; particulates; statistical analysis; winter; China;     Show all 10 Subjects
Abstract:
... Massive monitoring data requires effective statistical analysis methods. This paper aims to visualize the spatiotemporal characteristics and spillover effect of air pollutants. Ground-based PM₂.₅ data in 336 cities across China revealed a tough but improving situation. The PM₂.₅ average annual concentrations in 2016 and 2017 were 47 ± 18 µg/m³ and 44 ± 16 µg/m³ respectively, but a worse, or at lea ...
DOI:
10.1016/j.scitotenv.2019.135422

15. Optimization of recyclable MSW recycling network: A Chinese case of Shanghai

Author:
Lv, Jinya; Dong, Huijuan; Geng, Yong; Li, Haifeng
Source:
Waste management 2020 v.102 pp. 763-772
ISSN:
0956-053X
Subject:
population density,   etc   ; case studies; issues and policy; models; municipal solid waste; recycling; transportation; China;     Show all 8 Subjects
Abstract:
... The establishment of recycling network is critical to improve municipal solid waste (MSW) management. However, how to determine the best locations for the recycling stations and recycling centers remains to be solved. Under such a circumstance, this study aims to forecast the MSW generation and develop a cost-based location optimization model using p-median method so that the optimal scale and loc ...
DOI:
10.1016/j.wasman.2019.11.041

16. Do housing prices promote total factor productivity? Evidence from spatial panel data models in explaining the mediating role of population density

Author:
Zhou, Qian; Shao, Qinglong; Zhang, Xiaoling; Chen, Jie
Source:
Land use policy 2020 v.91 pp. 104410
ISSN:
0264-8377
Subject:
population density,   etc   ; cities; economic development; issues and policy; models; people; prices; purchasing; residential housing; urban areas;     Show all 10 Subjects
Abstract:
... The issue of what to promote in total factor productivity (TFP) in urban areas has been widely discussed in academia and housing prices and population density are confirmed to be two of the most essential driving factors. However, research into the interaction of housing prices and population density with TFP has been neglected, with no previous studies taking spatial factors into consideration, w ...
DOI:
10.1016/j.landusepol.2019.104410

17. Prediction of spatial distribution of invasive alien pests in two-dimensional systems based on a discrete time model

Author:
Gao, Jian; Gu, Changgui; Yang, Huijie; Weng, Tongfeng
Source:
Ecological engineering 2020 v.143 pp. 105673
ISSN:
0925-8574
Subject:
population density,   etc   ; introduced species; invasive species; models; prediction; quantitative analysis; uncertainty;     Show all 7 Subjects
Abstract:
... Preventing and managing the invasion of alien species poses significant challenges. In this article, we studied the population density of invasive alien pests based on a discrete time model, and found a new type of pattern and a new type of pattern formation mechanism. This new pattern is caused by the uncertainty of two states in the system (caused by chaos), which is different from the Turing in ...
DOI:
10.1016/j.ecoleng.2019.105673

18. A people-based density perspective on physical/virtual world spaces in the microcosmic city

Author:
Plane, David A.; Mu, Wangshu
Source:
Land use policy 2020 pp. 104462
ISSN:
0264-8377
Subject:
population density,   etc   ; automobiles; bicycling; cities; land policy; land use; planning; urban development; walking;     Show all 9 Subjects
Abstract:
... Electronic and cyber-based methods of conducting transactions have reduced the role of propinquity across a large spectrum of civic activities. Simultaneously, however, technological advances affecting many realms of commerce and culture have increased the necessity and desire for face-to-face contact. Ceding substantial portions of our time to the virtual realm has, curiously, enhanced the import ...
DOI:
10.1016/j.landusepol.2020.104462

19. Challenges in sample processing within radiocarbon dating and their impact in 14C-dates-as-data studies

Author:
Becerra-Valdivia, Lorena; Leal-Cervantes, Rodrigo; Wood, Rachel; Higham, Thomas
Source:
Journal of archaeological science 2020 v.113 pp. 105043
ISSN:
0305-4403
Subject:
population density,   etc   ; archaeology; carbon radioisotopes; human population; radiocarbon dating; statistical analysis;     Show all 6 Subjects
Abstract:
... For decades, researchers have employed sets of radiocarbon dates to reconstruct trends in ancient human populations. The overarching assumption in this analysis is that the frequency of dates is proportional to the magnitude of past human activity. Thus, the distribution of summed or otherwise summarized dates is used to extrapolate population density and mobility patterns. There are, however, a n ...
DOI:
10.1016/j.jas.2019.105043

20. Genetic variability and transgenerational regulation of investment in sex in the monogonont rotifer Brachionus plicatilis

Author:
Seudre, Océane; Vanhoenacker, Eloïse; Mauger, Stéphane; Coudret, Jérôme; Roze, Denis
Source:
Journal of evolutionary biology 2020 v.33 no.1 pp. 112-120
ISSN:
1010-061X
Subject:
population density,   etc   ; Aphidoidea; Brachionus plicatilis; Cladocera; clones; diapause; eggs; epigenetics; genetic variation; hatching; progeny; sexual reproduction;     Show all 12 Subjects
Abstract:
... In cyclical parthenogens such as aphids, cladocerans and rotifers, the coupling between sexual reproduction and the production of resting stages (diapausing eggs) imposes strong constraints on the timing of sex. Whereas induction of sex is generally triggered by environmental cues, the response to such cues may vary across individuals according to genetic and nongenetic factors. In this study, we ...
DOI:
10.1111/jeb.13554