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Plant-bird interactions respond stronger to fragmentation at high than at low elevations

At 1000 m a.s.l., a paradise tanager (Tangara chilensis) consumes fruits of Myrsine coriacea.

 

By Marta Quitián, Vinicio Santillán, Carlos Iván Espinosa, Jürgen Homeier, Katrin Böhning-Gaese, Matthias Schleuning and...

Of Beta-diversity and its decrease with increasing elevation

Credits - Valerio Giacomini (1958) La Flora - Conosci L'italia, Touring Club Italiano. Milano 

By: Francesco Maria Sabatini

It's a fact. Biodiversity is not uniformly distributed over the Earth's surface. Some regions are lush with a rich...

Dispersal and alternative breeding site fidelity strategies in in the great crested newt

By: Mathieu Denoel

We aimed at examining whether distinct breeding site fidelity strategies may coexist at the intra-population level and how breeding resource characteristics and individual phenotype may affect these strategies in pond-breeding...

Climate change may drive cave spiders to extinction

By: Marco Isaia, Stefano Mammola and Sara Goodacre

Despite the impact of global climate change being documented on a broad
range of biotas, the effects of altered temperatures on biological
communities...

Effects of grain size and niche breadth on species distribution modeling

By Thomas Connor

A large body of work in ecology of conservation is devoted to figuring out where species truly are and what causes them to be in some places and not others. Termed species distribution modeling, or SDM for short, this endeavor...

Seasonal climate conditions and land use associated with trends in summer Monarch abundance

By Sarah P. Saunders and Elise F. Zipkin

 

Migration is a captivating phenomenon that continues to fascinate both biologists and the public. In many species—ranging from the smallest insects to the largest mammals—thousands or even...

Climate change and constraint: why can’t more species respond to rapid warming?

Our ‘muse.’ A male Hudsonian godwit on the tundra in Churchill, Manitoba, Canada. Photo by Andrew S. Johnson.

By Nathan R. Senner @nrsenner

One of the fundamental problems currently facing scientists and conservationists is determining...

The downsizing of insular frugivore communities

This Aldabra giant tortoise Aldabrachelys gigantea is eating the fruit of an endemic Pandanus plant on Rodrigues. There were no frugivores left that were large enough to be able to swallow and disperse their seeds until these tortoises were introduced to...

Global patterns in the effects of predator declines on sea urchins

The venomous long-spined sea urchin, Diadema setosum, gathers together on a coral reef to spawn.

By Hannah Sheppard Brennand

Biologists have long been fascinated by the differences between tropical and temperate regions on...

Importance of migratory habitats

Northern pintail males and females.

By Ruscena Wiederholt and Brady Mattsson

Conserving or managing migratory species is notoriously challenging since their seasonal movements can cross international borders and continents – even...

If the apple doesn't fall far from the tree: Dispersal limitation and climatic niche conservatism shape dragonfly assemblages across Europe

Adaptations to habitats with low temporal and spatial stability (such as the depicted area in the Scottish Highlands, where air temperatures can drop below minus 10°C until Summer) allowed lentic dragonfly species to recolonize areas north of the 0°C isotherm at the Last...

Fish memories could help predict future occurrence patterns

 

By Jed Macdonald, Kai Logemann, Elias Krainski, Þorsteinn Sigurðsson, Colin Beale, Geir Huse, Solfrid Hjøllo, Guðrún Marteinsdóttir

 

The phenomena of schooling, shoaling, flocking, and swarming has intrigued ecologists for...

A story of hotspots and stepping stones

A typical subarctic mountain trail, winding through a blueberry field (Vaccinium myrtillus).

By Jonas Lembrechts

The higher up you go in the mountains, the less common these new species become. At some point, often close to...

Structure in your data can undermine your model validations: the problem and some solutions

Statistical models in ecology are used not just to describe the present state of natural systems, but also to predict their change or development over time. Such models are fairly simple to create and have thus become ubiquitous in all areas of ecological research. To...

No longer a black box: how did Maxent go open-source?

By Mary E. Blair and Robert P. Anderson

 

Fifteen years ago, Steven Phillips, a computer science researcher at AT&T Labs from South Africa, walked a few blocks from his apartment in New York City to the American Museum of Natural...

Spatial variation in Allee effects influences patterns of range expansion

In simulations comparing a population spread in a spatially homogenous (left) versus patchy (right) landscapes, variation in the Allee effect induces variation in spread patterns and increases the overall rate of spread.

By Jonathan A. Walter...

Shape analysis in a metacommunity context

The sigmodontine rodent genus Eligmodontia includes highly specialized desert-dwellers in the Southern Cone of South America. Species of gerbil mice have inflated auditory bullae, and are also capable of bipedal jumping and elevated urine concentration. Photo by...

Newly ice free areas in Antarctica and its consequences for coastal benthic ecosystems

Underwater pictures taken on the wall of the new island at Potter Cove. Both pictures were taken between 10 and 15 m depth where a high abundances of filters feeders such as ascidians and sponges were found. Note the aluminum ruler (10 cm long) that was attached to the...

Sleeping with the enemy: elephants alter rest behavior in risky areas

By Laura Keating and George Wittemyer

Sleep has been hypothesized to be fundamental to cognitive functioning, and extreme sleep deprivation can have lethal implications. In addition, sleep is one of the most susceptible times of day for an animal...

Making sense of of community phylogenetic metrics and null models

A rainbow lorikeet (Trichoglossus haematodus) and a helmeted friarbird (Philemon buceroides) eye each other warily at a flowering Schefflera actinophylla in Port Douglas, Queensland, Australia. Photo by Bryan Suson....

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