Global Change Biology

Cover image for Vol. 21 Issue 5

Edited by: Steve Long

Impact Factor: 8.224

ISI Journal Citation Reports © Ranking: 2013: 1/42 (Biodiversity Conservation); 4/216 (Environmental Sciences); 6/141 (Ecology)

Online ISSN: 1365-2486

Associated Title(s): GCB Bioenergy

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Global Change Biology exists to promote understanding of the interface between all aspects of current environmental change that affects a substantial part of the globe and biological systems.

The journal publishes primary research articles, technical advances, research reviews, commentaries and letters.

Global Change Biology defines global change as any consistent trend in the environment - past, present or projected - that affects a substantial part of the globe. Examples include:

Highlightsmarch15 Woody shrubs alter phenology and carbon flux

Increasing temperatures and reduced snow cover duration lengthen arctic tundra growing seasons. Indirect impacts of warming, such as increasing deciduous shrub cover, may also affect growing season length. To examine the influence of deciduous shrub abundance on tundra phenology and carbon uptake, the authors compared it to another common ecosystem in the area: evergreen and grass dominated forests. They found that deciduous shrub canopies had a 10-day longer peak green season, which significantly increased carbon uptake when compared to the evergreens.

highlightsmarch22015 Urgent need for warming experiments in tropical forests

Tropical forests are responsible for large fluxes of carbon dioxide, more so than any other terrestrial biome, yet we know very little about how this carbon balance may change with climate change. Using a global carbon-climate model, the authors confirmed that uncertainty regarding carbon balance under climate change conditions was highest in the tropics. They called for further research into the topic and prioritized the best approaches, advocating primarily for multi-faceted research approaches. It is concluded that warming manipulation experiments in tropical forests will yield the most informative results.

highlightsmarch32015 Multiple stressors and stream invertebrates

Waterways around the world are facing an array of confounding stressors: high sediment loads and nutrient enrichment are adversely affecting the macroinvertebrate communities of these waterways. Global climate change is likely to modify the ecological consequences of these stressors, but the exact outcome of this modification is unknown. By simulating temperature increases in mesocosms that already had these stressors, the authors were able to find out how waterways reacted. Importantly, they found stressed waterways had a consistently stronger temperature response, or even a reversal of its direction.

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