|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
Wader migration system in East Asia and Australasiaстатья
- Авторы: Parish D., Lane B., Sagar P., Tomkovich P.
- Сборник: Wader Study Group Bull. 49, Supplement
- Год издания: 1987
- Первая страница: 4
- Последняя страница: 14
- Аннотация: The East Asian/Australasian Flyway extends from breeding grounds in East Siberia, China and Alaska, south to wintering areas in South-east Asia and Australasia. There are 77 migratory wader species in this flyway of which 75 migrate from northern breeding grounds to southern wintering grounds. The first site counts were made in the 1940's in New Zealand. Major co-ordinated counts started in the 1970's and 1980's in Japan, Australia and South-east Asia. The main techniques used in the region are aerial, boat and ground surveys, regular counts and marking. Other techniques include observations by radar, and of breeding and feeding ecology. Southwards migration is from late June to November. Northwards migration is from late February to late May. Migration strategies include arc-routing, overflying, and trans-Pacific flights. The main non-breeding grounds for Tringa sandpipers are in South-east Asia, and for Calidris sandpipers are in Australia. Non-breeding habitats in the tropics are mangrove/mudflat areas and partly flooded rice fields. In the temperate zone, coastal lagoons and large bays are used. Northward and southward migration routes of many species appear to differ, but insufficient data are yet available to plot precise routes. Majpr gaps include the location of the breeding and non-breedina areas of some species, and the migration routes between. The most important work to be carried out in the next decade will be to continue to locate major sites, to make detailed studies on endangered species, ringing, and to continue regular counts to monitor population levels.
- Добавил в систему: Томкович Павел Станиславович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Parish_et_al_WSGB_1987.pdf | 1,6 МБ | 31 октября 2013 [TomkovichPS] |