Population growth dynamics and their implications for fish welfare in mixed-size cohorts of Cyprinus Carpio var koi grown in a commercial-scale aquaponics system

2021 ◽  
Author(s):  
Danielle M. Maitland ◽  
Joe Baker ◽  
Greg Chambers ◽  
Neil W. Ross ◽  
Stefanie M. Colombo
Keyword(s):  
Population Growth ◽  
Cyprinus Carpio ◽  
Growth Dynamics ◽  
Fish Welfare ◽  
Commercial Scale

scholarly journals The dynamics of population by settlements in the Guba-Khachmaz economic-geographical region

2020 ◽  
Vol 3 ◽  
pp. 143-151
Author(s):  
Tural Bayramov ◽  
Keyword(s):  
Population Growth ◽  
Rural Population ◽  
Growth Dynamics ◽  
Living Standards ◽  
Geographical Region ◽  
Employment Rate ◽  
Social Survey ◽  
Rural And Urban ◽  
The Social ◽  
Dynamics Of Population

The article shows and analyzes the population growth dynamics in the Guba-Khachmaz economic-geographical region, the economic region’s urban and rural population. Its share of the population of Azerbaijan for the years 1990-2015 are shown in the tables and also analyzed. The population for rural and urban sectors and the indicators of rate are shown in the map for 2016-2017 years. Also, as a result of the social survey conducted in the region, the living standards of the population as well as the employment rate in the settlements were studied, and ways to mitigate problems were identified.

Climatic change and Chinese population growth dynamics over the last millennium

2007 ◽  
Vol 88 (2) ◽  
pp. 131-156 ◽  
Author(s):  
Harry F. Lee ◽  
Lincoln Fok ◽  
David D. Zhang
Keyword(s):  
Population Growth ◽  
Climatic Change ◽  
Chinese Population ◽  
Growth Dynamics ◽  
Last Millennium

scholarly journals Partial exclusion of spawning Cyprinus carpio to improve coastal marsh habitat may come at the cost of increased carp population growth

2018 ◽  
Vol 385 ◽  
pp. 58-64
Author(s):  
Amanda Caskenette ◽  
Eva C. Enders ◽  
Doug Watkinson ◽  
Dale Wrubleski
Keyword(s):  
Population Growth ◽  
Cyprinus Carpio ◽  
Coastal Marsh ◽  
Marsh Habitat ◽  
Partial Exclusion ◽  
The Cost

Correlating single cell motility with population growth dynamics for flagellated bacteria

2007 ◽  
Vol 97 (6) ◽  
pp. 1644-1649 ◽  
Author(s):  
Sucheta Arora ◽  
Vidya Bhat ◽  
Aditya Mittal
Keyword(s):  
Population Growth ◽  
Cell Motility ◽  
Single Cell ◽  
Growth Dynamics

scholarly journals Temperature, aridity thresholds, and population growth dynamics in China over the last millennium

2009 ◽  
Vol 39 ◽  
pp. 131-147 ◽  
Author(s):  
HF Lee ◽  
DD Zhang ◽  
L Fok
Keyword(s):  
Population Growth ◽  
Growth Dynamics ◽  
Last Millennium

scholarly journals A Compact Macromodel of World System Evolution

2005 ◽  
pp. 79-93 ◽  
Author(s):  
Andrey Korotayev
Keyword(s):  
Population Growth ◽  
Growth Models ◽  
World System ◽  
Growth Dynamics ◽  
Modern World ◽  
World Population ◽  
World Population Growth ◽  
The World ◽  
The 1960S ◽  
The One

The fact that up to the 1960s world population growth had been characterized by a hyperbolic trend was discovered quite some time ago. A number of mathematical models describing this trend have already been proposed. Some of these models are rather compact but do not account for the mechanisms of this trend; others account for this trend in a very convincing way, but are rather complex. In fact, the general shape of world population growth dynamics could be accounted for with strikingly simple models like the one which we would like to propose ourselves: dN/dt = a (bK – N) N (1); dK/dt = cNK (2), where N is the world population, K is the level of technology/knowledge, bKcorresponds to the number of people (N), which the earth can support with the given level of technology (K). Empirical tests performed by us suggest that the proposed set of two differential equations account for 96.2– 99.78% of all the variation in demographicmacrodynamics of the world in the last 12,000 years. We believe that the patterns observed in pre-modern world population growth are not coincidental at all. In fact, they reflect population dynamics of quite a real entity, the world system. Note that the presence of a more or less well integrated world system comprising most of the world population is a necessary precondition, without which the correlation between the world population numbers generated by hyperbolic growth models and the observed ones would not be especially high. In fact, our findings could be regarded as a striking illustration of the fact well known in complexity studies — that chaotic dynamics at the microlevel can generate a highly deterministic macrolevel behavior. Against this background it is hardly surprising to find that the simplest regularities accounting for extremely high proportions of all the macrovariation can be found just for the largest possible social system — the world system.

scholarly journals The evolution of host resistance and parasite infectivity is highest in seasonal resource environments that oscillate at intermediate amplitudes

2020 ◽  
Vol 287 (1927) ◽  
pp. 20200787 ◽  
Author(s):  
Charlotte Ferris ◽  
Rosanna Wright ◽  
Michael A. Brockhurst ◽  
Alex Best
Keyword(s):  
Mathematical Model ◽  
Population Growth ◽  
Mathematical Modelling ◽  
Growth Rates ◽  
Host Resistance ◽  
Experimental Evolution ◽  
Growth Dynamics ◽  
Temporal Heterogeneity ◽  
Host Growth ◽  
Host Parasite

Seasonal environments vary in their amplitude of oscillation but the effects of this temporal heterogeneity for host–parasite coevolution are poorly understood. Here, we combined mathematical modelling and experimental evolution of a coevolving bacteria–phage interaction to show that the intensity of host–parasite coevolution peaked in environments that oscillate in their resource supply with intermediate amplitude. Our experimentally parameterized mathematical model explains that this pattern is primarily driven by the ecological effects of resource oscillations on host growth rates. Our findings suggest that in host–parasite systems where the host's but not the parasite's population growth dynamics are subject to seasonal forcing, the intensity of coevolution will peak at intermediate amplitudes but be constrained at extreme amplitudes of environmental oscillation.

Population Growth Dynamics of Carbon Nanotubes

ACS Nano ◽  
2011 ◽  
Vol 5 (11) ◽  
pp. 8974-8989 ◽  
Author(s):  
Mostafa Bedewy ◽  
Eric R. Meshot ◽  
Michael J. Reinker ◽  
A. John Hart
Keyword(s):  
Carbon Nanotubes ◽  
Population Growth ◽  
Growth Dynamics
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