Abstract—

In our previous article, a so-called “mortality pattern” was considered: the graphic ratio of the theoretical and real rate of decrease in the number of birds in the cohort considered by years. In this report, a numerical index of the population demographic status is derived based on the mortality pattern obtained from bird ringing data. This index is the mean deviation of the real mortality from the theoretical one calculated with a number of conditional restrictions and using additional coefficients. The degree of waterfowl population demographic status (the population size is stable, decreasing or growing) was estimated in two ways: using the numerical index derived and based on large-scale accounting and observations in nature. A good coincidence of both estimations was demonstrated for almost all waterfowl species. The numerical index of the population demographic status is proposed as one of the criteria for estimating the rational use of hunting species. This index allows us to make a conclusion about the possibility of hunting of various species of waterfowl birds or about the need for their protection (together with an indication of the required security measures). Based on calculations from bird ringing data, the harvest rate for those hunting species, the demographic status of which allows it, is substantiated. The harvest rate of waterfowl hunting species should not exceed one-third of the annual mortality rate for adult mature birds, no more than 67% for first year ducks, and no more than 45% for first year geese. Based on the method applied, it was possible to calculate the harvest rate for each hunting species of waterfowl, depending on the portion of yearlings in the population at the time of autumn surveys.

中文翻译：

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水禽资源的合理（可持续）利用：人口的人口状况和收成率

摘要-

在我们之前的文章中，考虑了一种所谓的“死亡率模式”：按年份计算的该组群中鸟类数量的理论和实际下降率的图形比率。在此报告中，根据从鸟铃数据获得的死亡率模式得出了人口人口统计状况的数字指标。该指数是实际死亡率与理论死亡率的平均偏差，该理论偏差是通过许多条件限制并使用其他系数计算得出的。水禽人口统计状况（人口规模稳定，减少或增长）的程度可通过两种方式估算：使用导出的数值指数，以及基于自然界的大规模核算和观察得出的数值指数。几乎所有水禽物种都证明了这两种估计的良好一致性。人口统计状况的数字指标被提议作为评估狩猎物种合理使用的标准之一。该指数使我们能够得出有关各种水禽鸟类被捕猎的可能性或其保护需求的结论（以及对所需安全措施的指示）。根据鸟类鸣响数据的计算，可以证实那些人口统计状况允许的狩猎物种的收获率。水禽狩猎物种的收获率应不超过成年成年鸟类年死亡率的三分之一，第一年鸭不超过67％，第一年鹅不超过45％。根据所应用的方法，可以计算出每种狩猎水禽的收获率，