Among individual variation exemplified by alternative colour morphs of the pygmy grasshopper Tetrix subulata (photograph by Anders Forsman).
by Anders Forsman and Lena Wennersten
A better understanding of the causes and consequences of the...
Modelled distribution of a unicorn whose dispersal was limited to Great Britain and Ireland. Illustration SNGT.
In 1990, Stuart H. Hurlbert analysed the “Spatial Distribution of...
A fifth-instar nymph of the blood-sucking bug Triatoma infestans placed inside the respirometry chamber (photograph by Diana Martinez Llaser).
by Gerardo J. de la Vega and Pablo E. Schilman
Several climate-based hypotheses have been proposed to...
Photo of common linnet (Linaria cannabina) photographed at Sallandse Heuvelrug, the Netherlands by J. Swiebe (waarneming.nl).
by Martijn Hammers
Some conservation programs are more successful than others, but we still have little understanding why...
Favourability models combining different factors in mainland Spain of four representative species: Chioglossa lusitanica, Iberolacerta cyreni, Pterocles orientalis, and Galemys pyrenaicus (favourability ranges from 0 to 1). Five alternative methodological...
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...
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...
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,...
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...
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...
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