Anthropogenic and natural stressors often interact to affect organisms. Amphibian populations are undergoing unprecedented declines and extinctions with pesticides and emerging infectious diseases implicated as causal factors. Although these factors often co-occur, their effects on amphibians are usually examined in isolation. We hypothesized that exposure of larval and metamorphic amphibians...
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., ... &
Relyea, R. A. (2015). Effects of Pesticide Mixtures on Host-Pathogen Dynamics of
the Amphibian Chytrid
1. Chronic infections may have negative impacts on wildlife populations, yet their effects are difficult to detect in the absence of long-term population monitoring. Brucella abortus, the bacteria responsible for bovine brucellosis, causes chronic infections and abortions in wild and domestic ungulates, but its impact on population dynamics is not...
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., Cross, P. C., Bengis, R. G., & Jolles, A. E. (2015).
Context-dependent survival, fecundity and
Background—The effect of intensive blood pressure (BP) lowering on kidney function among individuals with established cerebrovascular disease and preserved estimated glomerular filtration rate (eGFR) is not established.
Methods and Results—Among 2610 participants randomized to a lower (<130 mm Hg) versus higher (130–149 mm Hg) systolic BP target with repeated measures...
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remains an issue of active debate. Observational
data show a graded association of higher BP levels with
Resolving the debate surrounding the nature and controls of seasonal variation in the structure and metabolism of Amazonian rainforests is critical to understanding their response to climate change. In situ studies have observed higher photosynthetic and evapotranspiration rates, increased litterfall and leaf flushing during the Sunlight-rich dry season. Satellite data...
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seasonal cycle as per convention (Huete
et al 2006, Morton et al 2014). It consists of a short dry
season
Managing for species using current weather patterns fails to incorporate the uncertainty associated with future climatic conditions; without incorporating potential changes in climate into conservation strategies, management and conservation efforts may fall short or waste valuable resources. Understanding the effects of climate change on species in the Great Plains of...
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are decreasing in response to changes in climate
(Peterson 2003), which may be affected by a de
Understanding plant gene promoter architecture has long been a challenge due to the lack of relevant large-scale data sets and analysis methods. Here we present a publicly available, large-scale transcription start site (TSS) dataset in plants using a high-resolution method for analysis of 5’ ends of mRNA transcripts. Our dataset...
In the Amazon the only described species
of Cordyceps sensu stricto (Hypocreales, Cordycipitaceae)
that parasitize insects of Orthopterida (orders
Orthoptera and Phasmida) are Cordyceps locustiphila
and C. uleana. However, the type specimens for both
taxa have been lost and the concepts of these species
are uncertain. To achieve a more...
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., Tabima, J., Restrepo, S., Læssøe, T., Spatafora, J. W., &
Franco-Molano, A. E. (2014). Entomopathogens
1. Chronic infections may have negative impacts on wildlife populations, yet their effects are difficult to detect in the absence of long-term population monitoring. Brucella abortus, the bacteria responsible for bovine brucellosis, causes chronic infections and abortions in wild and domestic ungulates, but its impact on population dynamics is not...
Full Text:
., Cross, P. C., Bengis, R. G., & Jolles, A. E. (2015).
Context‐dependent survival, fecundity and
Iron (Fe) and copper (Cu) are essential cofactors for microbial metalloenzymes, but little is known about the metalloenyzme inventory of anaerobic marine microbial communities despite their importance to the nitrogen cycle. We compared dissolved O₂ , NO₃⁻, NO₂⁻, Fe and Cu concentrations with nucleic acid sequences encoding Fe and Cu-binding...
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,
a section of the journal
Frontiers in Microbiology
Received: 10 July 2015
Accepted: 07 September
The boundary between ice and basalt on Earth is an analog for some near-surface environments of Mars. We investigated neutrophilic iron-oxidizing microorganisms from the basalt-ice interface in a lava tube from the Oregon Cascades with perennial ice. One of the isolates (Pseudomonas sp. HerB) can use ferrous iron Fe(II) from...
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Interface in a Lava-Tube Cave, a Mars Analog Environment
Olivine-Respiring Bacteria Isolated from the Rock