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RESPONDENT
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Zakhar Borisov
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SITE NAME
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Molodo River, Yakutia, Russia
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| Contact details
(phone/fax//e-mail//address): |
| (411-2)44-56-98 // // Institute of biological problems of cryolitozone, Pr. Lenina, 41, Yakutsk, 677891, Russia
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PROJECT DETAILS |
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Start of survey:
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End
of survey: |
Team
size: |
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10.06
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15.09
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WEATHER
CONDITIONS
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Weather conditions: |
| Spring was early and phenological events occurred 2-3 weeks earlier than normal. Ice melted on water bodies in floodplan by 10 June, but not on large watershed lakes. Mass flowering of forbs in the river floodplain and on southern slopes started in mid June. Flowering of Pulsatilla flavescens was over by this time, and seeds started to drop in mass in plants of Solicaeae family. Summer was unusually warm, with prolonged period when temperatures reached +29-30øC.
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| Date of ice-break on
rivers: |
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| Date of final loss of
snow: |
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BIOTIC
CONDITIONS
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| Rodents abundance evaluation: |
high
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Breeding conditions:
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Rough-legged Buzzards nested in high numbers, and inhabited nests on rocks of river bank were spaced at 2-3 km. Other species of birds of prey and owls were not seen.
Bird reproduction was early. Broods of Willow Grouse appeared in mass in the last 5 days of June. Juveniles of Indian Tree Pipit and Dusky Trush were seen on 30 June, 5-7-day old chicks of Common Gull - on 2 July, hatching of chicks of Common Tern - on 3 July, independently feeding juveniles of Yellow and White wagtails - on 10 July, and brood of Raven - on 10 July. House Martin juveniles left nests in the end of July.
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Rodent dynamics:
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| Microtine numbers were high. In the first half of July abundance of Middendorf's and Tundra voles was 23 animal per 100 conus-nights, while abundance of Grey-sided and Ruddy voles and Wood Lemming was 0.5 per 100 trap-nights. In the second half of summer their numbers increased to 55.5 and 1.1 per 100 trap-nights, respectively. Numbers of hares were average, while Northern Pikas were very rare.
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Rodent species recorded:
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| Latin | Abundance |
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| Microtus oeconomus | abundant |
| Clethrionomys rufocannus | rare |
| Clethrionomys rutilus | rare |
| Microtus middendorffi | abundant |
| Myopus schisticolor | rare |
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Summary
of fauna studies: |
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