Zobacz książki o podobnej tematyce

Więcej informacji o Arctic Shorebirds in North America

• Dane szczegółowe
• Opis
• Ulubione w innej kategorii

Za ten zakup dostaniesz 229 punkty

Opis

Each year shorebirds from North and South America migrate thousands of miles to spend the summer in the Arctic. There they feed in shoreline marshes and estuaries along some of the most productive and pristine coasts anywhere. With so much available food they are able to reproduce almost explosively; and as winter approaches, they retreat south along with their offspring, to return to the Arctic the following spring. This remarkable pattern of movement and activity has been the object of intensive study by an international team of ornithologists who have spent a decade counting, surveying, and observing these shorebirds. In this important synthetic work, they address multiple questions about these migratory bird populations. How many birds occupy Arctic ecosystems each summer? How long do visiting shorebirds linger before heading south? How fecund are these birds? Where exactly do they migrate and where exactly do they return? Are their populations growing or shrinking? The results of this study are crucial for better understanding how environmental policies will influence Arctic habitats as well as the far-ranging winter habitats used by migratory shorebirds.

Szczegóły książki

Kategoria Książki po angielsku Earth sciences, geography, environment, planning The environment

• Pełny tytuł: Arctic Shorebirds in North America
• Autor: Jonathan Bart
• Język: Angielski
• Oprawa: Twarda
• Liczba stron: 320
• EAN: 9780520273108
• ISBN: 0520273109
• ID: 01204118
• Wydawca: University of California Press
• Waga: 946 g
• Wymiary: 262 × 177 × 22 mm
• Data wydania: 01. September 2012

Ulubione w innej kategorii

---

---

---