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Stressful climate reduces species richness, but not the diversity of tree strategies

Figure 1. Shifts in tree strategies along precipitation and temperature gradient in western USA. From left to right: Saguaro cacti (Carnegiea gigantea) in Arizona desert; cottonwoods (Populus fremontii) in Escalante (Utah);  redwoods (Sequoia...

What drives treeline elevation on islands?

Global distribution of oceanic island treelines (red), continental island treelines (blue) vs mainland treelines (grey). While the mainland treelines are characterized by a subtropical double-hump, island treelines produce a single hump in the tropics and are substantially...

Climate change and the lasting legacy of old vegetation plots

Figure 1. The eastern flank of Mont St-Joseph, in Parc national du Mont Mégantic, Québec. This photo was taken in spring, while deciduous trees (mostly sugar maple) were just leafing out (light green at low elevation). The dark green at high elevation is boreal forest,...

Herbivore damage increases avian and ant predation of caterpillars on trees along a complete elevational forest gradient in Papua New Guinea

Figure 1. Mt Wilhelm (4509 m a.s.l.; the highest peak of Papua New Guinea) hosts one the most complete and largely undisturbed forest elevational gradient in tropics. Here I took photograph of the upper part of the gradient, from 2000 m to the summit of Mt Wilhelm with its...

Using basic plant traits to predict ungulate seed dispersal potential

Poacae species germinating from roe deer dung in the wild. Photo by Christophe Baltzinger.

 

By Christophe Baltzinger and Aurélie Albert

Zoochory is a fundamental plant-animal interaction but, today, habitat fragmentation is decreasing gene flow...