measurement-aerosols-optical-thickness-atmosphere-using-globe

Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer

Here, we describe the measurement of aerosol optical thickness using the GLOBE handheld sun photometer. Aerosol optical thickness (AOT) was measured at ...

Xavier University of Louisiana

An allopatric population of big-eared climbing rats () from the Northern Highlands of Chiapas, Mexico, is described as a new species. The new taxon is part of a unique montane rainforest community that includes several other endemic species in the limited geographic range between the Río Grijalva and the Central Depression of Chiapas. Several cranial, external, and molecular characters distinguish this new species of big-eared climbing rat from its more widely distributed congener, . We performed principal component and discriminate function analyses of cranial measurements, and found that specimens of the new species consistently could be distinguished from other  with strong statistical support. Compared with exemplars of  from elsewhere in their range, the new species possesses a karyotype that differs by 3 additional biarmed chromosome pairs, is fixed or nearly fixed for distinct electromorphs at 12 allozyme loci, and the mean genetic distance exceeds 14%, based on comparisons of the mitochondrial cytochrome  gene between the new species of  and representatives of . The restricted distribution in montane karst rainforest suggests that the species and its habitat may be a matter of conservation concern.

Maryssa Bradley

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