79-12 Beyond "more data:" Natural history specimens for methods validation and student training

Abstract:

Biodiversity data have utility ranging from fundamental taxonomic studies to applications of public health research; thus, it is important that these data are discoverable and have useful metadata to avoid duplication of effort. Here, we present a case study integrating collection of biodiversity data from natural history specimens with training of students in data management and specimen curation.

Collections from the Panama Paleontology Project (PPP) offer possibility for provision of vast sets of body size data rapidly, using high throughput imaging methods. These large specimen collections also allow students to have practice in collecting biodiversity data. Here, we utilized a sample of 1000 Chione bivalve specimens from the Ground Creek faunule (~2 Ma), measured both by calipers, and digitally to validate the accuracy of the digital method. This genus was selected because it is morphologically simple and had an abundant sample size, thus allowing for a meaningful comparison of methods.  After measurements were collected using calipers by a student trainee, we then used a digital camera and a rail stacking tool to collect digital measurements. When possible, specimens were imaged with those of similar sizes to minimize misalignment between specimen photos. Specimens were given a unique number, which allowed for comparison between hand measurements and digital measurements. Following the acquisition of photographs by student trainees, image stacks were processed using the AutoMorph software developed by Hsiang and collaborators (2018). 2D measurements were close between digital and manual, while 3D measurements were more variable.

There is always a need for physical specimens and collections – these serve as the basis for fundamental biodiversity research and for continuing collections. This project highlights a supplemental modality for investigating biodiversity collections. It also serves as a case study for integrating biodiversity training with natural history collection specimens – teaches interns valuable lessons about data management, specimen handling practices, and data preparation.

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