Results 21 to 30 of about 3,149,527 (289)

Pushed beyond the brink: Allee effects, environmental stochasticity, and extinction [PDF]

open access: yes, 2014
A demographic Allee effect occurs when individual fitness, at low densities, increases with population density. Coupled with environmental fluctuations in demographic rates, Allee effects can have subtle effects on population persistence and extinction ...
Roth, Gregory, Schreiber, Sebastian
core   +4 more sources

Tropical Climate Less Affects Covid19 Transmission than Population Density: Perspective of Indonesia

open access: yesJurnal Kesehatan Lingkungan, 2022
Introduction: Indonesia is ranked the 4th most populous country in the world. Since Covid19 is highly transmissible from human to human, Indonesia might suffer a long period of the Covid19 pandemic than other less-populous countries.
Anwar Rovik, Anggi Pratama, Ayu Rahayu
doaj   +1 more source

Quantifying whether different demographic models produce incongruent results on population dynamics of two long-term studied rodent species [PDF]

open access: yes, 2017
1. Population density (ind/ha) of long-term (>15 years) series of CMR populations, using distinct demographic models designed for both open and closed populations, were analysed for two sympatric species of rodents (Myodes glareolus and ...
Amori, Giovanni   +3 more
core   +2 more sources

The epochs of early-type galaxy formation as a function of environment [PDF]

open access: yes, 2004
The aim of this paper is to set constraints of the epochs of early-type galaxy formation through the 'archaeology' of the stellar populations in local galaxies.
Aragon-Salamanca A.   +33 more
core   +1 more source

Population size of Aegla longirostri Bond-Buckup and Buckup, 1994 (Crustacea, Decapoda, Anomura): comparison of methods with the mark-recapture technique in closed population

open access: yesNauplius, 2018
The aim of this study is to estimate the population size of Aegla longirostri Bond-Buckup and Buckup, 1994 in a subtropical low-order stream using the mark-recapture technique.
Joele S. Baumart   +3 more
doaj   +1 more source

Epidemiology of parasitic protozoan infections in Soay sheep (Ovis aries L.) on St Kilda [PDF]

open access: yes, 2006
The feral Soay sheep (Ovis aries L.) population on Hirta, St Kilda, is host to a diverse component parasite community, but previous parasitological studies of the population have only focussed on the metazoan species.
Craig, B. H.   +3 more
core   +2 more sources

Rural to Urban Population Density Scaling of Crime and Property Transactions in English and Welsh Parliamentary Constituencies [PDF]

open access: yes, 2016
Urban population scaling of resource use, creativity metrics, and human behaviors has been widely studied. These studies have not looked in detail at the full range of human environments which represent a continuum from the most rural to heavily urban ...
Hanley, QS, Lewis, D, Ribeiro, HV
core   +4 more sources

A Population Development and Density Analysis of the Neighborhoods of Polatlı (Ankara)

open access: yesAnkara Araştırmaları Dergisi
This study aims to analyze the relative development of the population of the District of Polatlı during the Republic Period. It also considers how change occurred in the neighborhood according to the spatial distribution of the population.
Bayram Tuncer, Tahir Tuncer
doaj   +1 more source

The Impact of Population Density and Economic Growth on Environmental Quality: Study in Indonesia

open access: yesJurnal Ekonomi & Studi Pembangunan, 2021
Sustainable economic growth is followed by an improvement in environmental quality. The purpose of this study is to identify the correlation between economic growth and population density on the environmental quality index (EQI) in Indonesia. In addition,
Abdulloh Nashiruddin Wafiq   +1 more
doaj   +1 more source

Limit theorems for multi-type general branching processes with population dependence [PDF]

open access: yes, 2019
A general multi-type population model is considered, where individuals live and reproduce according to their age and type, but also under the influence of the size and composition of the entire population.
Fan, Jie Yen   +3 more
core   +2 more sources

Home - About - Disclaimer - Privacy