Preprints (not yet peer-reviewed)

291 downloads
247 views

Despite decades of work in environmental science and ecology, estimating human influences on ecosystems remains challenging. This is partly due to complex chains of causation among ecosystem elements, exacerbated by the difficulty of collecting biological data...

["Biodiversity","Ecology","Environmental Sciences"]
doi:10.7287/peerj.preprints.2356v1
939 downloads
1,674 views

Zeta potential, defined as the electric charge at the shear plane, is widely used as a proxy parameter for bacteria cell surface charge. Nonspecific adsorption of ions or polyelectrolytes onto the cell surface, however, alters the value and polarity of the measured...

["Bioengineering","Biophysics","Biotechnology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.110v5
209 downloads
462 views

Microbes for environmental research should be cultured in growth media with characteristics (e.g., pH, ionic strength, and organic and ionic composition) as close to their original habitat as possible. In addition, the medium should also enable high cell density...

["Biochemistry","Bioengineering","Biotechnology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.1406v4
169 downloads
723 views

The characteristics of the culture vessel determine, to a large extent, the type of growth medium suitable for use. For example, most growth media for high cell density cultivation are designed for expensive bioreactors operating either in continuous or fed-batch...

["Biochemistry","Bioengineering","Biotechnology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.117v4
291 downloads
1,159 views

Sufficient quantities of cells of consistent characteristics are needed for studying biological processes (at the population level) in many areas of applied microbiology. However, generating the requisite biomass by cell culture is usually the rate-limiting step...

["Biochemistry","Biotechnology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.115v5
32 downloads
197 views

The endangered chimpanzee (Pan troglodytes) is threatened by habitat loss from resource extraction and land conversion, as well as illegal bushmeat hunting and disease. It has been estimated that more than 70% of chimpanzee's tropical forest habitats in Africa...

["Animal Behavior","Biodiversity","Conservation Biology","Ecology","Environmental Sciences"]
doi:10.7287/peerj.preprints.2339v1
865 downloads
577 views

Microbes, with their vast metabolic capabilities and great adaptability, occupy almost every conceivable ecological niche on Earth – thus, could they survive in the oligotrophic (i.e., nutrient poor) deionized (DI) water that we use for experiments? Observations...

["Biodiversity","Ecology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.181v4
156 downloads
191 views

To assess the possible impact of transgenic poplar plantations on the ecosystem, we analyzed the frequency and distance of gene flow from a mature male transgenic Populus nigra carried Bacillus thuringiensis toxin gene (Bt-OE poplar) plantation, and the survival...

["Agricultural Science","Ecology","Environmental Sciences","Plant Science"]
doi:10.7287/peerj.preprints.2335v1
181 downloads
771 views

Solid medium enables spatially resolved simultaneous cultivation of different microbes in a simple and relatively low cost format useful for preliminary screening of microorganism diversity. Lack of color contrast between colonies and agar, however, hampers colony...

["Bioengineering","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.89v4
135 downloads
155 views

The objective of this study is to find the correlation between climate factors and dengue incidence rate in Bangkok and Singapore during 2009-2015. Spearman's rank correlation tests with time-lag are performed to investigate the overall correlation between dengue...

["Environmental Sciences","Epidemiology","Infectious Diseases"]
doi:10.7287/peerj.preprints.2322v1
100 downloads
449 views

Bacteria surface charge mediates important cell-environment and microbe-host interactions, and its accurate and precise measurement by microelectrophoresis requires removing metabolites adhered to the cell surface - where repeated centrifugation and washing by...

["Biotechnology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.91v4
137 downloads
522 views

Understanding the distribution of taxa and associated traits across different environments is one of the central questions in microbial ecology. High-throughput sequencing (HTS) studies are presently generating huge volumes of data to address this biogeographical...

["Bioinformatics","Ecology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.2317v1
183 downloads
373 views

The production of hydrogen and methane by geochemical reactions associated with the serpentinization of ultramafic rocks can potentially support subsurface microbial ecosystems independent of the photosynthetic biosphere. Methanogenic and methanotrophic microorganisms...

["Ecology","Environmental Sciences","Genomics","Marine Biology","Microbiology"]
doi:10.7287/peerj.preprints.2315v1
29 downloads
192 views

Bacteria surface charge derives its meaning from the cell’s environment; thus, there is no specific surface charge. Determining the surface charge of bacteria in its native environment requires measuring the proxy variable, zeta potential, using cells obtained...

["Bioengineering","Biophysics","Biotechnology","Environmental Sciences","Microbiology"]
doi:10.7287/peerj.preprints.2086v2
165 downloads
902 views

Biodiversity is currently assessed for environmental characterizations and monitoring through a laborious and time-consuming process of morphological taxonomy. We used rRNA 18S, rRNA 28S and COI, together with NGS and Bioinformatics to identify benthic invertebrate...

["Bioinformatics","Environmental Sciences","Genomics"]
doi:10.7287/peerj.preprints.2103v3
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