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There have been calls for biodiversity and ecosystem assessments to count non-native species as well as their native counterparts as positively contributing to biological diversity. Daniel Simberloff, Gore Hunger Professor of Environmental Studies at the University of Tennessee and member of the Invasive Species Specialist Group of IUCN’s Species Survival Commission, explains why this appro...
The invasive emerald ash borer (EAB, Agrilus planipennis Fairmaire) causes widespread ash tree mortality in North America, and the CO<sub>2</sub> efflux (respiration, F) from coarse dead wood (CDW) following the EAB infestation is unknown. We examined seasonal variations in CO<sub>2</sub> fluxes from various types of CDW (cut ash stumps, downed logs, and standing girdled de...
Invasive species and habitat loss are the biggest threats to Australian biodiversity, according to new research by the Threatened Species Recovery Hub in partnership with The University of Queensland....
Publication date: 15 February 2019Source: Forest Ecology and Management, Volume 433Author(s): M. Victoria Lantschner, Brian H. Aukema, Juan C. CorleyAbstractInsect outbreaks are among the most important biotic disturbances in forest ecosystems and can exert immense economic and ecological impacts. Understanding the spatio-temporal patterns of eruptive insects can provide insights into the mechanis...
Niche theory predicts that when two species exhibit major niche overlap, one will eventually be eliminated through competitive exclusion. Thus, some degree of niche specialization is required to facilitate coexistence. We examined whether two important seed bank pathogens on the invasive winter annual grass Bromus tectorum (cheatgrass, downy brome) exhibit niche specialization. These pathogens uti...
A fungal pathogen soon to be described as Rutstroemia capillus-albis (Rutstroemiaceae, Helotiales, Leotiomycetes) has been identified as the causal agent of ‘bleach blonde syndrome’ on the invasive annual grass weed Bromus tectorum (cheatgrass) in western North America. This apparently common but previously undescribed disease causes premature senescence and sterility, but does not affect seed...
Anthropogenic activities have a major impact on the global environment. Canada's natural resources are threatened by the spread of fungal pathogens, which is facilitated by agricultural practices and international trade. Fungi are introduced to new environments and sometimes become established, in which case they can cause disease outbreaks resulting in extensive forest decline. Here, we describe ...
The highly toxic brown tree snake, which has killed off most of the native birds on the Pacific island of Guam, was once thought to have its own distinctive venom. However, scientists have now proven that other snakes are armed with the same poison. In a recent study in the Journal of Molecular Evolution, biologists […]...
Publication date: 15 February 2019Source: Forest Ecology and Management, Volume 433Author(s): Christine B. Schmitt, Daniel Kisangau, Kennedy W. MathekaAbstractRiparian forests in tropical drylands support high biodiversity and provide crucial ecosystem services. Yet, fertile soil, water availability and trees as a source of charcoal and timber make them a favourable place for settlements and subsi...
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