Abstract

The results of a comparative analysis of the terms and duration of phenological phases in the population of the little ground squirrel in the central part of the Yergenin Uplands in the years 1926–1932, 1972–1982, and 2000–2015 are presented. It is noted that in the years 1926–1932 all the main phenological life phases of populations of the little ground squirrel took place exclusively during the spring–summer period (March–August). It is proved that in the period 2000–2015, under the influence of modern climate warming, the emergence of the population of the small gopher out of hibernation began to be noted during the winter months (January–February) compared to 1926–1932. The beginning and end of the pregnancy period was recorded between the first ten-day period of February and the third ten-day period of March. Accordingly, preparation for hibernation (fattening) of adult animals began to occur also at an earlier date (March, April) and ended mainly in May. The first appearance of young of the little ground squirrel on the surface and their dispersal began to take place in April–May. The mass hibernation of young ground squirrels was recorded in late June–early July. At the same time, a tendency to increase was noted in comparison with the period 1926–1932 of the total duration of the hibernation period of young animals (July–January or February). A decrease in the intensity of fodder migrations of adult ground squirrels to lowering of the relief was also noted.

中文翻译：

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现代气候变暖对Yergenin高地地区的Spermophilus pygmaeus Pallas（1778，Rodentia，Mammalia）种群中基本物候阶段的影响

摘要

给出了对1926–1932年，1972–1982年和2000–2015年间Yergenin高地中部小地松鼠种群的物候期术语和持续时间的比较分析结果。值得注意的是，在1926年至1932年间，小松鼠种群的所有主要物候生命阶段都发生在春夏季（3月至8月）。事实证明，在2000–2015年期间，在现代气候变暖的影响下，与1926–1932年相比，冬季（1月至2月）开始注意到小地鼠的冬眠现象。在2月的第一个10天至3月的第三个10天之间记录了怀孕期的开始和结束。因此，成年动物的冬眠（脂肪化）准备工作也在较早的日期（3月，4月）开始进行，并且主要在5月结束。地面小松鼠的幼体首次出现并散布于4月至5月。6月下旬至7月上旬记录了幼小松鼠的大量冬眠。同时，与幼动物冬眠总时间（7月至1月或2月）的1926年至1932年相比，有增加的趋势。还注意到成年地松鼠的饲料迁移强度降低，从而减轻了救济。地面小松鼠的幼体首次出现并散布于4月至5月。6月下旬至7月上旬记录了幼小松鼠的大量冬眠。同时，与幼动物冬眠总时间（7月至1月或2月）的1926年至1932年相比，有增加的趋势。还注意到成年地松鼠的饲料迁移强度降低，从而减轻了救济。地面小松鼠的幼体首次出现并散布于4月至5月。6月下旬至7月上旬记录了幼小松鼠的大量冬眠。同时，与幼动物冬眠总时间（7月至1月或2月）的1926年至1932年相比，有增加的趋势。还注意到成年地松鼠的饲料迁移强度降低，从而减轻了救济。