Female Stictia heros in Costa Rica nested in a large (1500 wasps) aggregation as well as in scattered, small (<20) clusters. They individually provisioned unicellular nests progressively with a variety of flies. Burrows ...

Modem pollcn rain data from a suite of sites in lowland South and Central America are analysed by means of detrended correspondence analysis (DCA) and two-way indicator species analvsis (TWINSPAN). and are shown to have ...

En Costa Rica existen alrededor de 350 humedales documentados, dentro de los cuales se encuentran muestras representativas de humedales continentales, marino-costeros e insulares. El alto número y variedad de estos ecosistemas, ...

We compared the rate of pollen deposition, the likelihood of fruit production, the number of seeds per fruit, the outcrossing rate, and the progeny vigor of the tropical dry forest tree Enterolobium cyclocarpum for individuals ...

We report on a Upper Cretaceous (Campanian-Maastrichtian) limestone sample collected by P. Denyer and a group of students during a field trip of the course Geología de Campo II, of the Escuela Centroamericana de Geología ...

The Pacific face of Costa Rica and western Panama has been extensively studied because of the wide occurrence of oceanic assemblages. In Northern Costa Rica, the Santa Elena Nappe made by ultramafic and mafic associations ...

We present a new integrated interpretation of the geochemistry and geotectonic significance of the Santa Elena Peninsula, which is divided in three units: 1) an overthrust allocthonous unit of ultramafic and mafic rocks, ...

Male orchid bees collect volatiles, from bothfloral and non-floral sources, that they expose as phero-mone analogues (perfumes) during courtship display. Thechemical profile of these perfumes, which includes terpenesand ...