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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...

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

Predicting the faith of exotic plant species in cold-climate mountains

...

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....

Plant traffic along mountain roads

Gravel road through Torres del Paine National Park in the Chilean Andes

 

Editor's choice March 2017

By Jonas Lembrechts

Roads help us to get from point A to point B. They are extremely useful structures for doing exactly...

Regression commonality analyses on hierarchical genetic distances

By Jerome G. Prunier

Landscape genetics is emerging as an important way of supporting decision-making in landscape management, in response to the deterioration of matrix permeability due to habitat loss and fragmentation. In line with unremitting methodological...

Tropical frugivorous birds are both more specialized and generalized than temperate frugivorous birds

Frugivorous bird assemblages at high latitudes consist mainly of bird species with an omnivorous diet containing both fruits and a wide range of other food types. This is here exemplified with the North American Turdus migratorius eating both earthworms and fruits...

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