Cover image gallery

Click on an image to read the article associated to it or click on the link below to read the content of that issue.

Volume 1 Issue 3

Cover image: the arctic fox (Vulpes lagopus) is one of the main predators of the arctic tundra ecosystem. It is an opportunistic, circumpolar species that samples all year round the terrestrial or marine food chains. It feeds preferentially on small rodents but also on food sources containing variable or higher amounts of lipids, such as eggs of birds nesting in the Arctic. When using stable isotope analysis and mixing models to reconstruct a diet, results can be strongly biased by variable lipid concentrations in food sources. We used the diet of the arctic fox as an example illustrating the effects of different lipid levels in food sources on the estimation of diet composition. The adult fox photographed here was observed on Bylot Island, Nunavut, in August 2008.

Read the article related to the cover image: Sensitivity of stable isotope mixing models to variation in isotopic ratios: evaluating consequences of lipid extraction
by Arnaud Tarroux, Dorothée Ehrich, Nicolas Lecomte, Timothy D. Jardine, Joël Bêty and Dominique Berteaux

Read Volume 1 Issue 3

View Arnaud Tarroux's interview on this article

Volume 1 Issue 2

Cover image: Eastern hemlock (Tsuga canadensis) is a foundation tree species in over 6 million hectares of eastern North American forests. This species is now threatened in much of its range as an exotic insect, the hemlock woolly adelgid (Adelges tsugae) spreads rapidly and killing hemlock trees within 5-10 years of infestation. Pre-emptive salvage logging in advance of the adelgid is also reducing hemlock cover, especially in northeastern North America. These panoramic photographs illustrate hemlock stands before and after girdling to simulate adelgid attack (top pair), before and after a logging operation (middle pair), and an undisturbed hemlock control plot (bottom pair) in the Harvard Forest Hemlock Removal experiment. Individual photographs were taken with a 24-mm Nikon manual lens mounted on a Nikon D-3 digital camera operated in FX mode. Each panorama was assembled from 4-7 individual photographs using Canon's Photostich software, version 3.1. Post-processing, including minor color correction and cropping, was done using IrfanView version 4.23. Photo credit and image processing: Aaron M. Ellison.

Read the article related to the cover image: Experimentally testing the role of foundation species in forests: the Harvard Forest Hemlock Removal Experiment
by Aaron M. Ellison, Audrey A. Barker-Plotkin, David R. Foster, David A. Orwig

Read Volume 1 Issue 2

View Aaron Ellison's interview on this article

Volume 1 Issue 1

Cover image: Asian swamp buffalo (Bubalus bubalis) introduced to Australia in the early 19th Century now populate much of the tropical north and cause severe environmental disturbances to savanna and wetland ecosystems. Despite a broad-scale cull of hundreds of thousands of free-ranging buffalo occurring in the 1980s and 1990s to eradicate brucellosis and tuberculosis, the population is recovering and continuing to threaten protected areas such as Kakadu National Park. A small wild harvest of several thousand buffalo occurs each year in Arnhem Land where mustering is aided by helicopters and on-ground vehicles. The buffalo pictured are housed in temporary holding pens and then shipped for live export. Photo credit: Jesse Northfield (used with permission).

Read the article related to the cover image: Spatially explicit spreadsheet modelling for optimising the efficiency of reducing invasive animal density
by Clive R. McMahon, Barry W. Brook, Neil Collier and Corey J. A. Bradshaw

Read Volume 1 Issue 1

View Corey Bradshaw's interview on this article

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