ecodagЮг России: экология, развитиеSouth of Russia: ecology, development1992-10982413-0958State Institute of Applied Ecology of the Republic of Dagestan10.18470/1992-1098-2025-3-7ecodag-3520Research ArticleЗООЛОГИЯZOOLOGYОценка плотности куропаток (Lagopus spp.) как основного пищевого ресурса кречета (Falco rusticolus) в осенний период на ЯмалеAssessment of ptarmigan (Lagopus spp.) density as the main prey for gyrfalcon (Falco rusticolus) in autumn on the Yamal Peninsulahttps://orcid.org/0000-0002-6692-4375СоколоваН. А.SokolovaN. A.

Наталья А. Соколова, кандидат биологических наук, старший научный сотрудник 

629404, г. Лабытнанги, ул. Зеленая горка, 21. Тел. +79224591097

Natalia A. Sokolova, PhD 

21 Zelenaya Gorka St, Labytnangi, 629404. Tel. +79224591097

nasokolova@yandex.ruФуфачевИ. А.FufachevI. A.

Иван А. Фуфачев 

Лабытнанги 

Ivan A. Fufachev 

Labytnangi 

https://orcid.org/0000-0002-1521-3856СоколовА. А.SokolovA. A.

Александр А. Соколов 

Лабытнанги 

Aleksandr A. Sokolov 

Labytnangi 

Арктический научно‐исследовательский стационар Института экологии растений и животных УрО РАНArctic Research Station of the Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences2025201120252038292Copyright © Соколова Н.А., Фуфачев И.А., Соколов А.А., 20252025Соколова Н.А., Фуфачев И.А., Соколов А.А.Sokolova N.A., Fufachev I.A., Sokolov A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ecodag.elpub.ru/ugro/article/view/3520

Цель: оценить плотность населения куропаток (Lagopus spp.),необходимую для успешного массового размножения кречетов (Falco rusticolus) на новых северных территориях его гнездового ареала на полуострове Ямал.Авиаучеты куропаток с борта вертолета Ми‐8 в октябре на маршруте г. Лабытнанги – мыс Тиутей‐Сале. Маршрут протяженностью 560 км охватил три биоклиматические подзоны тундры. Всего учтено 17 407 куропаток.Плотность встреченных куропаток колебалась от 3,60 до 55,17 птиц на 1 км2 в разных подзонах тундр полуострова. Усредненные значения трех авиаучетов показали сходные значения для подзоны типичных и арктических тундр: 34,04±7,37 и 33,53±11,17 особей/км2 соответственно. В кустарниковой тундре плотность была в четыре раза меньше и составила 8,45±2,69 особей/км2.Высокая плотность куропаток, зарегистрированная к северу от подзоны кустарниковых тундр, может являться залогом успешного регулярного гнездования кречетов в этих районах. По нашим оценкам, выявленное высокое обилие куропатки на среднем и северном Ямале достаточно для успешного гнездования здесь нескольких десятков пар кречетов.

Aim. To assess the population density of ptarmigans (Lagopus spp.) necessary for the successful breeding of Gyrfalcons (Falco rusticolus) in the new northern expansion of its breeding range on the Yamal Peninsula.Aerial surveys of ptarmigan were conducted from an Mi‐8 helicopter in October along the route from the town of Labytnangi – Cape Tiuitei‐Sale. The 560 km long route covers three bioclimatic tundra subzones. A total of 17,407 ptarmigans were counted.The density of ptarmigan encountered ranged from 3.60 to 55.17 birds per km² in different tundra subzones of the peninsula. The averaged numbers from three aerial surveys showed similar densities for typical and arctic tundra subzones: 34.04 ± 7.37 and 33.53 ± 11.17 individuals/km², respectively. In the shrub tundra, the density was four times lower – 8.45 ± 2.69 individuals/km².The high ptarmigan density recorded north of the shrub tundra subzone may ensure successful, regular nesting of Gyrfalcons in these areas. According to our estimates, the revealed high abundance of ptarmigans in central and northern Yamal is sufficient for the successful nesting of several dozen pairs of Gyrfalcons.

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