Ministry of natural resources of the Russian federation

       Polistovsky National Nature Reserve

 
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October 9 - Nature calendar: autumn in Polistovsky

Nature calendar: autumn in Polistovsky

осень в Полистовском заповеднике, фото: Ольга Кудрина 

This year's meteorological autumn began in Polistovsky Reserve only in the middle of September, rather lagging behind the calendar. Since еру 13th of September, maximum air temperatures haven't exceed +20°C, and average daily temperatures were consistently below +15°C. Since the 23rd of September, minimum temperatures've fallen below +10°C and autumn has fully come.

клюква, осень в Полистовском заповеднике, фото: Ольга Кудрина 

Summer this year was unusually warm and sunny, it lasted 123 days: from mid-May to mid-September. The maximum air temperature was noted on the 3rd of August, when thermometers warmed to +31.1°C. Short periods of cooling, not exceeding five days, occurred only three times over the summer: in early June the air temperature dropped to 0.8° at night, in early July - to 7.8°, and in late August - to 7.2°. The rest of the time, the air was warmed up to 20, and often even to 25 degrees Celsius daily.

осень в Полистовском заповеднике, фото: Андриан Колотилин 

The first autumn frosts did not take long to occur and happened soon after the onset of meteorological autumn. According to the weather station of Polistovsky Reserve, the air temperature dropped to -1.1°C on the 29th of September, and exactly a week later, at night on the 5th of October, it became cold again to -1.6°C. But even after the onset of autumn, warm days were still returning to Polistovsky; at the end of September the air warmed up to +26°C.

брусника, осень в Полистовском заповеднике, фото: Ольга Кудрина 

Phenological autumn also came to the Reserve in September.The last white storks left the protected area near the 20th of August. By the end of the month, lingonberries began fruiting, and in September, cranberries became ripe, and mushrooms appeared in the forests and in on the bog. From mid-September the color of the foliage began to change noticeably, and by October the bog and surrounding forests were filled with bright shades of red and yellow.

осень в Полистовском заповеднике, фото: Ольга Кудрина 

October brought a noticeable cooling in Polistovsky, but so far late flowers can be found in the Reserve: the yellow iris (Iris pseudacorus) and the Andromeda prostrate shrub (Andromeda polifolia) re-bloomed. Since October, the autumn flight of the anseriformes and charadriiformes began in the Reserve, and now in the sky you can watch the flocks flying to the south.

ирис ложноаировый, осень в Полистовском заповеднике, фото: Ольга Кудрина 

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