РЕЗУЛЬТАТЫ ИНСТРУМЕНТАЛЬНОГО АВИАУЧЁТА ЛЕДОВЫХ ФОРМ ТЮЛЕНЕЙ НА ЛЬДАХ ОХОТСКОГО МОРЯ В МАЕ 2013 Г.

• Main Authors: Черноок, Владимир, Грачёв, Алексей, Васильев, Александр, Труханова, Ирина, Бурканов, Владимир, Соловьёв, Борис
• Format: Text
• Language: unknown
• Published: Федеральное государственное унитарное предприятие «Тихоокеанский научно-исследовательский рыбохозяйственный центр» 2014
• Subjects: ОХОТСКОЕ МОРЕ,АВИАУЧЁТ,ТЮЛЕНИ,ЛАХТАК,АКИБА,КРЫЛАТКА,ЛАРГА,ЛЁД,ТЕПЛОВАЯ СЪЁМКА,ФОТОСЪЁМКА,ЧИСЛЕННОСТЬ,РАСПРЕДЕЛЕНИЕ,OKHOTSK SEA,AERIAL SURVEY,ICE-ASSOCIATED SEALS,BEARDED SEAL,SPOTTED SEAL,RIBBON SEAL,RINGED SEAL,INFRARED SURVEY,PHOTO SYSTEM,SEALS ABUNDANCE,SEALS DISTRIBUTION; Okhotsk; Pacific; bearded seal; okhotsk sea; ringed seal
• Online Access: http://cyberleninka.ru/article/n/rezultaty-instrumentalnogo-aviauchyota-ledovyh-form-tyuleney-na-ldah-ohotskogo-morya-v-mae-2013-g; http://cyberleninka.ru/article_covers/15664676.png

Выполнена оценка современного состояния ледовых форм тюленей на основе использования современных инструментальных методов авиасъёмки. Авиаучёт тюленей проведен надо льдами Охотского моря в период с 1 по 9 мая 2013 г. с использованием тепловой и фотосъёмки с самолёта-лаборатории Ан-38 «Восток». После полётов произведён подсчёт количества животных в полосе обзора авиасъёмочной аппаратуры на учётных галсах. Получены данные о численности и распределении ледовых форм тюленей (лахтак, ларга, крылатка, акиба) на льдах Охотского моря. Populations of ice-associated seals in the Okhotsk Sea are assessed using modern instrumental aerial technique. The aerial survey was conducted over a part of the ice-covered area of the Sea on May 1-9, 2013 by means of thermal scan and visual digital photography from the aircraft-laboratory An-38 «Vostok». The ice covered area of the Okhotsk Sea in the time of survey was estimated as 242,000 km 2, and 2,993 km 2 of it was covered by survey transects with total length 5,617 km. The number of animals on all transects within the equipment swath was counted. Four seal species were identified: bearded, spotted, ribbon, and ringed seals, and their number and distribution were determined. The infra-red scanner recorded 5,730 seals on the ice and 4,360 these animals were photographed including 844 ringed seals, 453 bearded, 721 spotted, 1,805 ribbon, 435 pups non-identified to the species, and 102 non-identified to species adult seals. These assessments were extrapolated over the whole ice-covered area of the Okhotsk Sea using a linear model framework, and the following estimations of the species total abundance were presented (95 % confidence intervals in brackets): 88,253 (64,120-130,320) ringed seals, 39,743 (27,868-60,026) bearded seals, 181,179 (118,392-316,995) ribbon seals, and 84,356 (55,172-113,540) spotted seals. A database on all recorded seals with their «portrait-photos» and accompanying information is created on materials of the aerial survey. The developed instrumental technology can be used as a basis for wider aerial surveys of ice-associated seals in the North Pacific.