Near Infrared Spectroscopy in Wildlife and Biodiversity

Abstract

Near infrared (NIR) spectroscopy has been used to answer a wide variety of questions in wildlife and biodiversity research. Whereas agricultural systems and manufacturing seek to limit variation in production systems, wildlife and biodiversity research must embrace it. Variation amongst individuals is the material on which natural selection operates and NIR spectroscopy provides a means to catalogue this variation and to use it in broader ecological and evolutionary analyses and for practical conservation outcomes. In this review we describe how NIR spectroscopy has been applied in wildlife and biodiversity research to obtain data that we could not obtain otherwise. Here we describe a range of applications for which NIR spectroscopy has been applied to questions in taxonomy, physiology, habitat evaluation and population monitoring and highlight new approaches that will allow NIR spectroscopy to be used more widely in wildlife and ecological studies.

Variety identification of oat seeds using hyperspectral imaging: investigating the representation ability of deep convolutional neural network

“…24,28 The wavelength at 1473 nm (around 1473.9 nm) is assigned to the water bands, and the last optimal wavelength at 1633 nm is ascribed to the rst overtone of C-H stretching. 29,30 Different varieties of oat seeds exhibited different ngerprint information at these nine optimal wavelengths, which could be caused by composition differences determined by variety. Therefore, as a simplication of full wavelengths, these wavelengths contained the key information to distinguish different varieties, and could be combined with classical clas-siers to perform further discriminant analysis.…”

Rapid Classification of Wheat Grain Varieties Using Hyperspectral Imaging and Chemometrics

“…For example, the crest around 1100 nm was associated with the second overtone of C-H stretching, as are the crests and troughs around 1200 nm and 1300 nm [30][31][32]. Additionally, the trough around 1450 nm was associated with the first overtone of O-H and N-H inherent stretching and vibration [33][34][35]. These were related to the composition and content of chemicals, such as starch and protein [36], which resulted in diverse reflectivity.…”

The Quality of Silage From Festuca Arundinacea and Miscanthus Giganteus as Feedstock for Biomethane Production in Republic of Moldova

“…Near infrared reflectance spectroscopy has been used in agricultural research for years, as a robust method, low cost and doing non-destructive measurements with limited sample preparation, providing quantitative and qualitative information [VIDICAN & al. 2000;MAYER, 2015;VANCE & al. 2016].…”