Results 21 to 30 of about 2,986,773 (268)
Remote Sensing, 2022 Burrowing mammals such as European sousliks are widespread and contribute significantly to soil ecosystem services. However, they have declined across their range and the non-invasive estimation of their actual population size has remained a challenge ...
Csongor I. Gedeon +6 more
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Calculation of the effective population size and estimating of total population size using mitochondrial DNA sequencing in Hamedan, Qazvin and Zanjan provinces [PDF]
مجله بیوتکنولوژی کشاورزی, 2015 Although wolves have the ability to live in different habitat types, in recent years their population has been drastically reduced in most parts of the country and in some areas has become extinct.
Marziyeh Asadi Aqbelaghi +4 more
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Endangered birds of old growth forests in the Pirin National Park, SW Bulgaria: habitat preferrences, distribution and population sizes in 2001-2019 [PDF]
Tichodroma, 2021 Actual status, distribution, numbers and threats for four forest bird species – Tengmalm’s Owl (Aegolius funereus), Pygmy Owl (Glaucidium passerinum), Three-toed Woodpecker (Picoides tridactylus), and Capercaillie (Tetrao urogallus) were studied in the ...
Petar SHURULINKOV +8 more
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Effective population size [PDF]
Current Biology, 2002 What is it? An aid to calculation in population genetics, introduced by Sewall Wright. The rate of change of the genetic make-up of a population by genetic drift – fluctuations in allele frequencies caused by random sampling – is inversely related to the effective population size, Ne. Ne is measured with reference to an ideal ‘Wright–Fisher’ population.
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Mutation and population size [PDF]
Heredity, 1973 A combination of ecological and genetic models makes it possible to predict the effects of mutation on population size. Although all disadvantageous mutants produce the same genetic load (as conventionally defined) different types of mutants may have different effects upon the numerical equilibrium.
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Climate and local abundance in freshwater fishes [PDF]
Royal Society Open Science, 2016 Identifying factors regulating variation in numbers of individuals among populations across a species' distribution is a fundamental goal in ecology. A common prediction, often referred to as the abundant-centre hypothesis, suggests that abundance is ...
Jason H. Knouft, Melissa M. Anthony
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POPULATION SIZE AND SURVIVAL RATES OF WILD TURKEY GOBBLERS IN CENTRAL MISSISSIPPI
Wildlife Society Bulletin, 1995 : Knowledge of wild turkey (Meleagris gallopavo) population size and survival rates is needed to monitor trends and to evaluate management progress. To accomplish this, long‐term data sets are essential.
John R. Lint +3 more
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Theory and practice of population policies in the Soviet Union
Статистика и экономика, 2017 The aim of the research, presented in the paper is the analysis for the formation and development of the basic theory of population policies in the scientific school of Professor Dmitry I.Valentey (Lomonosov Moscow State University).
V. V. Elizarov
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Population ecology of the spectacled caiman (Caiman crocodilus) in the Apaporis River middle basin
Ecosphere, 2021 Population ecology studies on spectacled caimans (Caiman crocodilus) in Colombia have been few and far between with many covering short periods and defining population parameters based on relative indices (i.e., individuals/km).
Sergio A. Balaguera‐Reina +2 more
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Effective Population Size of Korean Populations [PDF]
Genomics & Informatics, 2014 Recently, new methods have been developed for estimating the current and recent changes in effective population sizes. Based on the methods, the effective population sizes of Korean populations were estimated using data from the Korean Association Resource (KARE) project. The overall changes in the population sizes of the total populations were similar
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