Daniel H. Janzen

Herbivores and the Number of Tree Species in Tropical Forests

A high number of tree species, low density of adults of each species, and long distances between conspecific adults are characteristic of many low-land tropical forest habitats....

Tropical Blackwater Rivers, Animals, and Mast Fruiting by the Dipterocarpaceae

Escape in Space by Sterculia Apetala Seeds from the Bug Dysdercus Fasciatus in a Costa Rican Deciduous Forest

When a seed of the large tree Sterculia apetala falls to the ground beneath the parent tree in a Costa Rican tropical deciduous forest, it is typically found and fed upon within...

Association of a Rainforest Palm and Seed‐Eating Beetles in Puerto Rico

The scolytid beetle Cocotrypes carpophagus may attack as many as 100% of the seeds of the common Puerto Rican rainforest palm Euterpe globosa by the end of the fruiting season w...

Neotropical Anachronisms: The Fruits the Gomphotheres Ate

Frugivory by extinct horses, gomphotheres, ground sloths, and other Pleistocene megafauna offers a key to understanding certain plant reproductive traits in Central American low...

DNA barcodes reveal cryptic host-specificity within the presumed polyphagous members of a genus of parasitoid flies (Diptera: Tachinidae)

Insect parasitoids are a major component of global biodiversity and affect the population dynamics of their hosts. However, identification of insect parasitoids is often difficu...

Setting up tropical biodiversity for conservation through non‐damaging use: participation by parataxonomists

Summary A parataxonomist is a resident, field‐based, biodiversity inventory specialist who is largely on‐the‐job trained out of the rural work force and makes a career of provid...