Farmers’ climate change perception, impacts and adaptation strategies in response to drought in the Northwest area of Bangladesh by J.M. Adeeb Salman Chowdhury, Md. Abdul Khalek, Md. Kamruzzaman

“…Drought in this area are not only experienced through high rainfall variability accompanied with high temperature, but also shortage of groundwater, lack of canal and river dragging, high population density, deforestation, etc. accelerate drought severity in this region (Habiba et al., 2012). …”
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Minimizing Investment Risk of Integrated Rail and Transit-Oriented-Development Projects over Years in a Linear Monocentric City by Ding Liu, Xi Jiang, Lingyun Meng, Ying-En (Ethan) Ge

“…It is found that underestimation exists for rail and TOD projects without consideration of the correlation of spatial and temporal population densities. TOD projects can greatly improve the return on investment of the rail operator. …”
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Application of fluid dynamics in modeling the spatial spread of infectious diseases with low mortality rate: A study using MUSCL scheme by Nnaji Daniel Ugochukwu, Kiogora Phineas Roy, Onah Ifeanyi Sunday, Mung’atu Joseph, Aguegboh Nnaemeka Stanley

“…By treating susceptible, infected, and treated population densities as fluids governed by a system of partial differential equations, the study simulates the epidemic’s spatial dynamics. …”
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Nonlinear stochastic Markov processes and modeling uncertainty in populations by H.Thomas Banks, Shuhua Hu

“…We consider an alternative approach to the use of nonlinear stochastic Markov processes (which have a Fokker-Planck or Forward Kolmogorov representation for density) in modeling uncertainty in populations.These alternate formulations, which involve imposing probabilistic structures on a family of deterministic dynamical systems, are shown to yield pointwise equivalent population densities. Moreover, these alternate formulations lead to fast efficient calculations in inverse problems as well as in forward simulations. …”
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Sod-Based Peanut/Cotton Rotation-Soil Health Part 1: Root Depth, Earthworms and Soil Water Infiltration by Tawainga W. Katsvairo, David L. Wright, James J. Marois, D. Hartzog, P. J. Wiatrak, Jimmy R. Rich

“…Rich, reports on the importance of perennial grasses on soil health and focuses on root growth, earthworm population densities and soil water infiltration. Published by the UF Department of Agronomy, July 2006. …”
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Sod-Based Peanut/Cotton Rotation-Soil Health Part 1: Root Depth, Earthworms and Soil Water Infiltration by Tawainga W. Katsvairo, David L. Wright, James J. Marois, D. Hartzog, P. J. Wiatrak, Jimmy R. Rich

“…Rich, reports on the importance of perennial grasses on soil health and focuses on root growth, earthworm population densities and soil water infiltration. Published by the UF Department of Agronomy, July 2006. …”
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Florida Bromeliad Weevil (no official common name), Metamasius mosieri Barber (Insecta: Coleoptera: Curculionidae: Dryophthorinae) by Barbra Larson, J. Howard Frank, Olan Ray Creel

“… The Florida bromeliad weevil is an occasional and minor pest on ornamental bromeliads and occurs at very low population densities in its natural habitat. It should not be confused with the Mexican bromeliad weevil, Metamasius callizona, which is currently attacking five species of native bromeliads in 16 counties and will likely destroy populations of six additional species of already-threatened or endangered bromeliads if not brought under control. …”
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Florida Bromeliad Weevil (no official common name), Metamasius mosieri Barber (Insecta: Coleoptera: Curculionidae: Dryophthorinae) by Barbra Larson, J. Howard Frank, Olan Ray Creel

“… The Florida bromeliad weevil is an occasional and minor pest on ornamental bromeliads and occurs at very low population densities in its natural habitat. It should not be confused with the Mexican bromeliad weevil, Metamasius callizona, which is currently attacking five species of native bromeliads in 16 counties and will likely destroy populations of six additional species of already-threatened or endangered bromeliads if not brought under control. …”
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2019–2020 Florida Citrus Production Guide: Nematodes by Larry W. Duncan, Joe W. Noling, Renato N. Inserra

“… Integrated pest management (IPM) for nematodes requires (1) determining whether pathogenic nematodes are present within the grove; (2) determining whether population densities of some nematodes are high enough to cause economic loss; and (3) selecting a profitable management option. …”
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2018–2019 Florida Citrus Production Guide: Nematodes by Larry W. Duncan, Joseph W. Noling, Renato N. Inserra

“… Integrated pest management (IPM) for nematodes requires: 1) determining whether pathogenic nematodes are present within the grove; 2) determining whether population densities of some nematodes are high enough to cause economic loss; and 3) selecting a profitable management option. …”
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2019–2020 Florida Citrus Production Guide: Nematodes by Larry W. Duncan, Joe W. Noling, Renato N. Inserra

“… Integrated pest management (IPM) for nematodes requires (1) determining whether pathogenic nematodes are present within the grove; (2) determining whether population densities of some nematodes are high enough to cause economic loss; and (3) selecting a profitable management option. …”
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2018–2019 Florida Citrus Production Guide: Nematodes by Larry W. Duncan, Joseph W. Noling, Renato N. Inserra

“… Integrated pest management (IPM) for nematodes requires: 1) determining whether pathogenic nematodes are present within the grove; 2) determining whether population densities of some nematodes are high enough to cause economic loss; and 3) selecting a profitable management option. …”
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Delayed population models with Allee effects and exploitation by Eduardo Liz, Alfonso Ruiz-Herrera

“…Using a delay-differential equation modeling the evolution of a single-species population subject to constant effort harvesting, we show that the interplay between harvest strength and Allee effects leads not only to collapses due to overexploitation; large delays can interact with Allee effects to produce extinction at population densities that would survive for smaller time delays.In case of bistability, our estimations on the basins of attraction of the two coexisting attractors improve some recent results in this direction. …”
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Perennial flower strips in agricultural landscapes strongly promote earthworm populations by Anna Vaupel, Zita Bednar-Konski, Matías Olivera, Nadine Herwig, Bernd Hommel, Lukas Beule

“…Here, we studied the effects of perennial flower strips on earthworm communities at 46 sites with paired croplands and perennial flower strips. Earthworm population densities in flower strips were on average 231% greater than in adjacent croplands. …”
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Relationship between Anti-European Brown Hare Syndrome Serological Titers and Brown Hare (Lepus europaeus Pallas) Densities by Gisella Paci, Antonio Lavazza, Marco Ferretti, Francesco Santilli, Marco Bagliacca

“…Results showed that EBHSV seropositive hares from areas with high and medium population densities had higher antibody titers than those coming from low-density areas and that adults showed lower values than young animals. …”
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Mycobacterium bovis: A Model Pathogen at the Interface of Livestock, Wildlife, and Humans by Mitchell V. Palmer, Tyler C. Thacker, W. Ray Waters, Christian Gortázar, Leigh A. L. Corner

“…Establishment of these reservoirs is the result of factors such as spillover from livestock, translocation of wildlife, supplemental feeding of wildlife, and wildlife population densities beyond normal habitat carrying capacities. …”
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Comparative abundance and diversity of populations of the Pseudomonas syringae and Soft Rot Pectobacteriaceae species complexes throughout the Durance River catchment from its Fren... by Morris, C.E., Lacroix, C., Chandeysson, C., Guilbaud, C., Monteil, C., Piry, S., Rochelle Newall, E., Fiorini, S., Van Gijsegem, F., Barny, M.A., Berge, O.

“…Among 168 samples collected at 21 sites in fall, winter, spring and summer of 2016 and 2017, Psy strains were detected at all sampling sites and in 156 of the samples at population densities up to 105 bacteria L-1. In contrast, SRP strains were detected in 98 of the samples, mostly from the southern part of the river, at population densities that did not exceed 3 ´ 104 bacteria L-1. …”
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Response of equilibrium states to spatial environmental heterogeneity in advective systems by Roger M. Nisbet, Kurt E. Anderson, Edward McCauley, Mark A. Lewis

“…Much ecological research involves identifying connections between abiotic forcing and population densities or distributions. We present theory that describes this relationship for populations in media with strong unidirectional flow (e.g., aquatic organisms in streams and rivers). …”
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Adoption of National Identity in Metropolises: A Study in Istanbul by Ece Doruk, Seda Mengü

“…Considering development levels, socio-economic status, population densities of different districts, a research field will be formed with random sampling method. …”
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Bifurcation and controller design in a 3D delayed predator-prey model by Jinting Lin, Changjin Xu, Yiya Xu, Yingyan Zhao, Yicheng Pang, Zixin Liu, Jianwei Shen

“…The outcomes of this paper are groundbreaking and can provide critical guidance for the control and regulation of predator and prey population densities.…”
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