forum zespołu muzyki folk Portfolk
Zapraszamy do dyskusji... TO SCOTLAND!!!
FAQ
Szukaj
Użytkownicy
Grupy
Galerie
Rejestracja
Profil
Zaloguj się, by sprawdzić wiadomości
Zaloguj
Forum forum zespołu muzyki folk Portfolk Strona Główna
->
Co o nas myślisz?
Napisz odpowiedź
Użytkownik
Temat
Treść wiadomości
Emotikony
Więcej Ikon
Kolor:
Domyślny
Ciemnoczerwony
Czerwony
Pomarańćzowy
Brązowy
Żółty
Zielony
Oliwkowy
Błękitny
Niebieski
Ciemnoniebieski
Purpurowy
Fioletowy
Biały
Czarny
Rozmiar:
Minimalny
Mały
Normalny
Duży
Ogromny
Zamknij Tagi
Opcje
HTML:
NIE
BBCode
:
TAK
Uśmieszki:
TAK
Wyłącz BBCode w tym poście
Wyłącz Uśmieszki w tym poście
Kod potwierdzający: *
Wszystkie czasy w strefie EET (Europa)
Skocz do:
Wybierz forum
KATEGORIE
----------------
Koncerty
Doradź nam coś.
Co o nas myślisz?
O wszystkim i o niczym
Przegląd tematu
Autor
Wiadomość
cheapbag214s
Wysłany: Pią 7:15, 29 Lis 2013
Temat postu: the researchers said.At the end of 2011
Wolves keep elk numbers down, grizzly bears' favorite food up
CORVALLIS, Ore.,[url=http://www.christianslouboutinsales.com]Christian Louboutin Men[/url], July 29 () -- The return of wolves to Yellowstone is helping the national park's grizzly bears by restoring one of the staples of their diet -- berries, experts say.The level of berries consumed by Yellowstone grizzlies is significantly higher now that shrubs are starting to recover following the re-introduction of wolves, which have reduced over-browsing by elk herds, scientists at the Oregon State University reported Monday.Berries are important to help bears put on fat before going into hibernation,[url=http://www.christianelouboutinoutlet.com]Christian Louboutin Discount[/url], they said."Wild fruit is typically an important part of grizzly bear diet, especially in late summer when they are trying to gain weight as rapidly as possible before winter hibernation," Oregon State forest ecosystems Professor William Ripple said. "Berries are one part of a diverse food source that aids bear survival and reproduction, and at certain times of the year can be more than half their diet in many places in North America."When wolves were removed from Yellowstone early in the 1900s, increased browsing by elk herds caused the demise of many food plants, including many berry-producing shrubs.Re-introducing wolves has helped reduce elk numbers in Yellowstone and allowed tree and shrub recovery, the researchers said.At the end of 2011, there were at least 98 wolves in 10 packs in Yellowstone's 3,468 square miles, they said.In 2012, bear numbers were estimated at more than 600.The park's website states about 10,000 to 20,000 elk from six or seven herds spend their summers in Yellowstone. The number dwindles to fewer than 5,000 during the winter.
fora.pl
- załóż własne forum dyskusyjne za darmo
Powered by
phpBB
© 2001 phpBB Group
Chronicles phpBB2 theme by
Jakob Persson
(
http://www.eddingschronicles.com
). Stone textures by
Patty Herford
.
Regulamin