Canadian boreal woodlands and forests cover approximately 3.09× 106 km2, located within
a larger boreal zone characterized by cool summers and long cold winters. Warming since …

Biotic interactions are believed to play a role in the origin and maintenance of species
diversity, and multiple hypotheses link the latitudinal diversity gradient to a presumed …

Many insect species are under threat from the anthropogenic drivers of global change.
There have been numerous well‐documented examples of insect population declines and …

Paleobotanists have long used models based on leaf size and shape to reconstruct
paleoclimate. However, most models incorporate a single variable or use traits that are not …

Abstract Numerous 40Ar/39Ar experiments on sanidine and biotite from 22 ash beds and 3
volcaniclastic sand beds from the Greater Green River, Piceance Creek, and Uinta Basins of …

The use of the functional feeding group–damage type system for analyzing arthropod and
pathogen interactions with plants has transformed our understanding of herbivory in fossil …

The sizes and shapes (physiognomy) of fossil leaves are widely applied as proxies for
paleoclimatic and paleoecological variables. However, significant improvements to leaf …

Evidence for a major extinction of insect herbivores is provided by presence–absence data
for 51 plant–insect associations on 13,441 fossil plant specimens, spanning the Cretaceous …

Tropical South America has the highest plant diversity of any region today, but this richness
is usually characterized as a geologically recent development (Neogene or Pleistocene) …

From humans to hermit crabs to deep water plankton, all living things compete for locally
limiting resources. This universal truth unites three bodies of thought--economics, evolution …