You can hide but you can’t run: apparent competition, predator responses and the decline of Arctic ground squirrels in boreal forests of the southwest Yukon by Jeffery R. Werner, Elizabeth A. Gillis, Rudy Boonstra, Charles J. Krebs

“…We used mark-recapture to estimate the population densities of both species over a 25-year period that covered two snowshoe hare cycles. …”
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Walkability Perceptions and Gender Differences in Urban Fringe New Towns: A Case Study of Shanghai by Wenjing Gong, Xiaoran Huang, Marcus White, Nano Langenheim

“…Urban fringe areas, characterized by relatively larger community sizes and lower population densities compared to central areas, may lead to variations in walkability as well as gender differences, such as safety perception. …”
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Assessing the Impact of Wildlife on Vegetation Cover Change, Northeast Namibia, Based on MODIS Satellite Imagery (2002–2021) by Augustine-Moses Gaavwase Gbagir, Colgar Sisamu Sikopo, Kenneth Kamwi Matengu, Alfred Colpaert

“…Our results revealed (i) widespread vegetation browning along elephant migration routes and within National Parks, (ii) Pearson correlation (<i>p</i>-value = 5.5 × 10⁻⁸) showed that vegetation browning areas do not sustain high population densities of elephants. Currently, the Zambezi has about 12,008 elephants while these numbers were 1468, 7950, and 5242 in 1989, 1994, and 2005, respectively, (iii) settlements and artificial barriers have a negative impact on wildlife movement, driving vegetation browning, and (iv) vegetation greening was found mostly within communal areas where intensive farming and cattle grazing is a common practice. …”
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Economic impacts of the urban ring : a spatial analysis by Lee, Waiduen V. (Waiduen Viviana), 1976-

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Evaluating methods for detecting and monitoring pangolin (Pholidata: Manidae) populations by Willcox, D, Nash, H, Trageser, S, Kim, H, Hywood, L, Connelly, E, Ichu Ichu, G, Kambale Nyumu, J, Mousset Moumbolou, C, Ingram, D, Challender, D

“…The behaviours, ecologies and morphologies of pangolins make them challenging to survey and monitor, and non-targeted wildlife surveys have not produced robust status assessments, especially where population densities are low because of overexploitation. …”

Spatial effects on the multiplicity of Plasmodium falciparum infections by Karl, S, White, M, Milne, G, Gurarie, D, Hay, S, Barry, A, Felger, I, Mueller, I

“…In the present study an individual-based mathematical malaria transmission model that incorporates multiple parasite clones, variable human exposure and duration of infection, limited mosquito flight distance and most importantly geographically heterogeneous human and mosquito population densities was used to illustrate the differences between homogeneous and heterogeneous transmission assumptions when aiming to predict surrogate indicators of transmission intensity such as population parasite prevalence or multiplicity of infection (MOI). …”

Ecology and sustainability of the marine ornamental trade in Puerto Rico by Ramos Alvarez, A

“…It is suggested that more species of fish could be added to the permitted species list, without damaging their population densities. From both ecological and market perspectives, MOF in Puerto Rico is a viable and sustainable small industry that could be expanded to benefit local people and international traders alike.…”

Sumatran mesocarnivores: small-medium sized wild felids of the Kerinci Seblat landscape by Haidir, IA

“…Specifically, this thesis has five main results: (i) revealed spatial and temporal interactions between clouded leopard, golden cat, and their respective prey through performing Bayesian two species occupancy modelling and temporal overlap analyses; (ii) estimated population densities of clouded leopard, in the context of human activities, by implementing Bayesian Spatially Explicit Capture Recapture (SECR) and identified and quantified illegal human activities detected by camera traps; (iii) estimated occupancy states as an indicator of clouded leopard and golden cat population dynamics from consecutive surveys in 2009-11 and 2014-16 and anthropogenic pressures from deforestation in the surrounding areas; and (iv) identified high priority areas within and outside protected area networks through estimating multi-species habitat use and least cost path and kernel density estimate analyses for defining core areas and corridor networks. …”

The natural management of tropical forests for timber and non-timber products by Laird, S

“…NTFPs may be harvested from areas with high population densities with well developed labour and trade patterns, or in areas that are sparsely populated. …”

Dietary niche constriction when invaders meet natives: evidence from freshwater decapods by Jackson, MC, Grey, J, Miller, K, Britton, JR, Donohue, I

“…We used a combination of field experiments and field surveys to examine the impacts of competition with a functionally similar native crab species on the population densities, growth rates and diet of the globally widespread invasive red swamp crayfish in an African river ecosystem. …”

An urban geography of the Roman world, 100 B.C. To A.D. 300 by Hanson, JW

“…To do so, it draws on a combination of textual sources and archaeological material to provide a new catalogue of cities, calculates new estimates of their areas and uses a range of population densities to estimate their populations, and brings together available information about their monumentality and civic status for the first time. …”

Larval surveillance and habitat characterization of dengue vectors in Tangkak, Johor, Malaysia by Ili Zawani Kamari, Nazri Che Dom, Mohd Yusmaidie Aziz, Farah Ayuni Shafie, Ahmad Razali Ishak

“…In addition, the knowledge on breeding habitat of Aedes species is crucial to provide better understanding of their population densities and distribution. The larval surveillance method was conducted in ten outbreak areas in Tangkak District, Johore, Malaysia. …”
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Biology of Macrolophus caliginosus (Heteroptera: Miridae) predator of Trialeurodes vaporium (Homoptera: Aleyrodidae) by Zaini, Mohd Rasdi, Ismail, Fauziah, Wan Abdul Kadir, Wan Mohamad, Syed Abdul Rashid, Syed Abdul Rahman, Md Rawi, Che Salmah, Jusoff, Kamaruzaman

“…The objective of the programme was to keep the predator population densities high enough in order to maintain T. vaporariorum and other insect pest populations below the economic threshold. …”
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Cost-effectveness of integrated pest management compared with insecticidal spraying against the German cockroach in apartment buildings. by Shahraki, Gholam Hossein, Mohd Noor, Hafidzi, Shahar, Mohd Khadri, Rafinejad, Javad, Ibrahim, Yusof

“…Sticky traps were used as tools for monitoring cockroach population densities. The IPM approach reduced (943%) the rate of insecticide application compared to the conventional spray. …”

Epidemiology trend with particular spatio-temporal distribution of DIR in Malaysia by Jamil, Nur Izzah, Che Him, Norziha, Mohd Hamdan, Siti Fatimah Az-Zahra, Rusiman, Mohd Saifullah

“…Among highest incidence rates were located at four districts; Petaling, Hulu Langat, Klang and Gombak where surrounding federal territory of Kuala Lumpur in the center of the region is on of main interest from high population densities and conclusion has been made that high DIR is strongly increase the risk of dengue incidence in that state.…”
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The Quorum Sensing Auto-Inducer 2 (AI-2) Stimulates Nitrogen Fixation and Favors Ethanol Production over Biomass Accumulation in <i>Zymomonas mobilis</i> by Valquíria Campos Alencar, Juliana de Fátima dos Santos Silva, Renata Ozelami Vilas Boas, Vinícius Manganaro Farnézio, Yara N. L. F. de Maria, David Aciole Barbosa, Alex Tramontin Almeida, Emanuel Maltempi de Souza, Marcelo Müller-Santos, Daniela L. Jabes, Fabiano B. Menegidio, Regina Costa de Oliveira, Tiago Rodrigues, Ivarne Luis dos Santos Tersariol, Adrian R. Walmsley, Luiz R. Nunes

“…Autoinducer 2 (or AI-2) is one of the molecules used by bacteria to trigger the Quorum Sensing (QS) response, which activates expression of genes involved in a series of alternative mechanisms, when cells reach high population densities (including bioluminescence, motility, biofilm formation, stress resistance, and production of public goods, or pathogenicity factors, among others). …”
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Eco-Virological Preliminary Study of Potentially Emerging Pathogens in Hedgehogs (<i>Erinaceus europaeus</i>) Recovered at a Wildlife Treatment and Rehabilitation Center in Norther... by Mauro Delogu, Claudia Cotti, Davide Lelli, Enrica Sozzi, Tiziana Trogu, Antonio Lavazza, Giacomo Garuti, Maria Rita Castrucci, Gabriele Vaccari, Maria Alessandra De Marco, Ana Moreno

“…Western European hedgehogs&#8217; ecological and feeding habits, along with their high population densities, notable synanthropic attitudes, frequent contacts with sympatric wild and domestic species, including humans, implicate the possible involvement of <i>E. europaeus</i> in the ecology of potentially emerging viruses, such as coronaviruses, influenza A and influenza D viruses, canine distemper virus, pestiviruses and Aujeszky&#8217;s disease virus. …”
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Spatiotemporal Effect of Land Use on Water Quality in a Peri-Urban Watershed in a Brazilian Metropolitan Region: An Approach Considering GEP-Based Artificial Intelligence by Adriano Bressane, Anna Isabel Silva Loureiro, Raissa Caroline Gomes, Admilson Irio Ribeiro, Regina Marcia Longo, Rogério Galante Negri

“…The suppression of natural spaces due to urban sprawl and increases in built and agricultural environments has affected water resource quality, especially in areas with high population densities. Considering the advances in the Brazilian environmental legal framework, the present study aimed to verify whether land use has still affected water quality through a case study of a peri-urban watershed in a Brazilian metropolitan region. …”
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Unexpected residual habitats raise hope for the survival of the fan mussel Pinna nobilis along the Occitan coast (Northwest Mediterranean Sea) by C Peyran, T Morage, E Nebot-Colomer, G Iwankow, S Planes

“…Line transects were deployed to count and measure individuals to estimate density, abundance, and size distribution. Population densities were variable, ranging from 0.6 ± 0.2 (SE) to 70.8 ± 7.6 ind. 100 m-2, representing one of the highest densities reported in the Mediterranean Sea. …”
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Effect of yeast and mineral fertilisers on the level attack of the solenopsis mealybug and productivity okra plants by Moustafa M.S. Bakry, Yani Maharani, R.O.H. Allam

“…The results indicated that the addition of 286 kg N∙ha –1, 143 kg P∙ha –1 and yeast to okra plants led to a maximum increase in the population densities of pest, and this caused a decrease in the vegetative stage of okra that would affect the final yield as compared to the other treatments throughout the two seasons. …”
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