General

What determines Komodo dragon survival?

A Komodo dragon walks on the beach in Komodo National Park, Indonesia. (Photograph by Achmad Ariefiandy).

 

By Tim Jessop, Deni Purwandana, Achmad Ariefiandy and Claudio Ciofi.

 

Across islands, animals may experience marked local environmental...

There is strength in diversity!

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...

Modelling unicorns to improve our capacity to accurately model real species

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...

Geographical distribution, climatic variability and thermo-tolerance of Chagas disease vectors

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...

Do ecological contrasts explain the effectiveness of conservation management?

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...

How can different species distribution models be combined?

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...

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...

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