scholarly journals Freshwater diatom transfer to clothing: Spatial and temporal influences on trace evidence in forensic reconstructions

2019 ◽  
Vol 59 (3) ◽  
pp. 292-305 ◽  
Author(s):  
K.R. Scott ◽  
R.M. Morgan ◽  
N.G. Cameron ◽  
V.J. Jones
Keyword(s):  
Trace Evidence ◽  
Freshwater Diatom

Ultrastructure of Melosira resting cell rejuvenation

1984 ◽  
Vol 42 ◽  
pp. 734-735
Author(s):  
C. E. M. Bourne ◽  
L. Sicko-Goad
Keyword(s):  
Electron Microscopy ◽  
Lake Michigan ◽  
Light And Electron Microscopy ◽  
Resting Cells ◽  
Planktonic Diatoms ◽  
Resting Cell ◽  
Vegetative Survival ◽  
Cytological Changes ◽  
Recent Attention ◽  
Freshwater Diatom

Much recent attention has been focused on vegetative survival forms of planktonic diatoms and other algae. There are several reports of extended vegetative survival of the freshwater diatom Melosira in lake sediments. In contrast to those diatoms which form a morphologically distinct resistant spore, Melosira is known to produce physiological resting cells that are indistinguishable in outward morphology from actively growing cells.We used both light and electron microscopy to document and elucidate the sequence of cytological changes during the transition from resting cells to actively growing cells in a population of Melosira granulata from Douglas Lake, Michigan sediments collected in mid-July of 1983.

The Use of a Sequential Extraction Technique to Characterize Soil Trace Evidence Recovered from a Spade in a Murder Case in Brazil*

2020 ◽  
Vol 65 (6) ◽  
pp. 1921-1934 ◽  
Author(s):  
Samara Alves Testoni ◽  
Vander Freitas Melo ◽  
Lorna Anne Dawson ◽  
Joice Malakoski ◽  
Edimar Cunico ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Extraction Technique ◽  
Trace Evidence

Cyclotella deceusteriana, a new centric diatom species (Bacillariophyta) from the sub-Antarctic Region

Phytotaxa ◽  
2018 ◽  
Vol 333 (1) ◽  
pp. 108 ◽  
Author(s):  
BART VAN DE VIJVER ◽  
STEVEN DESSEIN
Keyword(s):  
New Species ◽  
Morphological Analysis ◽  
Central Area ◽  
Centric Diatom ◽  
New Taxon ◽  
Antarctic Region ◽  
Distribution And Ecology ◽  
Electron Microscopical ◽  
A New Species ◽  
Freshwater Diatom

During a survey of the freshwater diatom flora of the sub-Antarctic region (Iles Kerguelen and Iles Crozet) in the southern Indian Ocean, an unknown Cyclotella taxon was observed that was formerly identified as the presumed cosmopolitan C. meneghinana. Detailed morphological analysis based on light and scanning electron microscopical observations and comparison with several similar Cyclotella taxa worldwide justified the description of this unknown taxon as a new species: Cyclotella deceusteriana sp. nov. The new taxon is characterized by the presence of marginal fultoportulae on every costa, hyaline furrows between the raised marginal parts on which the striae are located, 2, occasionally 1, 3 or 4 central fultoportulae and an entirely flat, smooth, relatively small central area. The new species is described and compared with other Cyclotella taxa. Notes on its distribution and ecology are added.

Soil examination for a forensic trace evidence laboratory – Part 2: Elemental analysis

2014 ◽  
Vol 245 ◽  
pp. 195-201 ◽  
Author(s):  
Brenda Woods ◽  
K. Paul Kirkbride ◽  
Chris Lennard ◽  
James Robertson
Keyword(s):  
Elemental Analysis ◽  
Trace Evidence
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