Area: 843.012,28 hectares- Perimeter: 809,04 Km Climate: hot and
humid tropical, with one to two month dry season. temp: 24°year
average pluv: 1.750 to 2.000 mm total /year Altitude: 200-600 m.
Geomorphology: Hilly and mountainous with large alluvial plains
and some low tabular plateau's. Separating the two basins of Rio
Ucayali (Peru) and Jurua (Brazil), the Park shelters main
sources of Jurua 's left margin affluent. It is structured in
four main hill massifs (Serras da Jaquirana, do Moa, do Jurua-
Mirim & do Rio Branco), separated by flat plains and valleys of
the corresponding affluent of the Jurna basin. Margins of the
lower section of the Jurua and Moa rivers are regularly to
permanently !éinundated, having lots of lakes, igapo's and
igarapé's. Higher up, are found some tabular well drained area's
(250 m). Higher still, the landscape is mostly made of hills of
up to 300 m with poorly marked valleys. The four sierra's
culminate up to 600 m, with asymmetric limestone crests dividing
the basins. Rapid ecolo