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Ichthyologist Noel Alfonso discusses his work as a biologist, emphasizing the importance of documenting biodiversity. His research involves the taxonomy and systematics of fish species. In this short video he explains how the specimens and data he collects in the field are used to provide information about changes taking place in the environment. For example changes in the numbers and distribution of an "indicator species" like the Brook Silverside can reveal a decline in the water quality of the habitat.
This video will definitely help a class understand the importance of biodiversity in a real world context. It will also support the understanding of the concept of indicator species. Due to some of the terminology used the video may be more suitable for older students.
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