manu national park

Manu National Park

MATERIALS AND METHODS
S
TUDY SITE
.trips peru
This study was conducted in an 800
ha forest manu reserve embedded in an expanse of con-
tinuous primary forest greater than 10,000 ha in
size. tour This site is reserve no. 1501 (also known as
‘‘km 41’’) of the Biological Dynamics of Forest
Fragments Project (BDFFP), formerly known as
the Minimum Critical Size of Ecosystems Project
(Lovejoy & Bierregaard 1990) located
ca
90 km
north of the city of Manaus (2
8
30
9
S, 60
8
W) in the
Brazilian state of Amazonas. The area is covered by
primary
terra firme
forest classified as Tropical
Moist Forest by Holdridge (1967). Mean annual
temperature in Manaus is 26.7
8
C, with monthly
means fluctuating
ca
2
8
C. A thirty-year average for
annual precipitation in Manaus is 2186 mm (Love-
joy & Bierregaard 1990). A relatively drier season
occurs from June through October, with the driest
months (July, August, and September) usually re-
ceiving less than 100 mm of rain each (Lovejoy &
Bierregaard 1990); however, both annual precipi-
tation and the severity of the dry season may
change substantially from year to year. At reserve
no. 1501, annual precipitation was 2935 mm and
2245 mm during 1996 and 1997, respectively.
During the dry season (June–October), 35 and 10
percent of the annual precipitation were recorded
in 1996 and 1997, respectively.