Characterizing demographic variation and contributions to population growth rate in a declining population
نویسندگان
چکیده
منابع مشابه
Characterizing demographic variation and contributions to population growth rate in a declining population.
1. Understanding how demographic variation translates into variation in population growth rate (λ) is central to understanding population dynamics. Such understanding ideally requires knowledge of the mean, variance and covariance among all demographic rates, allowing the potential and realized contribution of each rate to λ to be estimated. Such studies require integrated monitoring of all dem...
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Evaluating the relative importance of ecological drivers responsible for natural population fluctuations in size is challenging. Longitudinal studies where most individuals are monitored from birth to death and where environmental conditions are known provide a valuable resource to characterize complex ecological interactions. We used a recently developed approach to decompose the observed fluc...
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Recent theoretical studies have suggested that patterns of sequence divergence and relationships among alleles sampled from Populations are affected by population size and rates of growth. However, the degree of concordance between changes-to Populations and to the patterns of allelic relationships withinpopulations is not well understooL Threshold effects, time lags, or the effects of earlier ...
متن کاملSocio-demographic and Religious Factors Affecting Fertility Rate among Childbearing Women in Easter Iran: A Population-based Study
Background & aim: The reduction of fertility rate in the recent years in Iran may be due to the cultural and socioeconomic development in this country. The present study was conducted to investigate the relationship of fertility rate with demographic, socioeconomic, and religious factors among childbearing women in a city in Easter Iran. Methods: This cross-sectional study was conducted on 254 ...
متن کاملDemographic heterogeneity, cohort selection, and population growth.
Demographic heterogeneity--variation among individuals in survival and reproduction--is ubiquitous in natural populations. Structured population models address heterogeneity due to age, size, or major developmental stages. However, other important sources of demographic heterogeneity, such as genetic variation, spatial heterogeneity in the environment, maternal effects, and differential exposur...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2010
ISSN: 0021-8790
DOI: 10.1111/j.1365-2656.2010.01750.x