A valuable resource, largely hidden from view
By researching variation among and within collection specimens, biologists have uncovered many ecological and evolutionary mysteries of the natural world. For instance, a recent study on bird specimens traced the increasing concentration of atmospheric black carbon and its role in climate change over more than a century. Scientists can collect ancient DNA from specimens and gather information about historical population levels and healthy genetic diversity for organisms that are now threatened and endangered.
My own research on global bat diversity used hundreds of museum specimens to conclude that tropical bats coexist more readily than many biologists expect. This finding fits with an overall pattern across much of the tree of life where tropical species outnumber their temperate cousins. It may also help explain why in many parts of Central and South America, bats are among the most abundant and diverse mammals, period.
However, research on these specimens often requires direct access, which can come at a steep price. Researchers must either travel to museums, or museums must ship their specimens en masse to researchers – both logistical and financial challenges. Museums are understandably wary of shipping many specimens that are truly irreplaceable – the last evidence that some organisms ever existed in our world. A museum’s budget and carbon footprint can quickly balloon with loans. And as physical specimens cannot be in more than one location at once, researchers may have to wait an indefinite amount of time while their materials are loaned to someone else.
CT scanning bat skulls
I have tried to tackle these issues of access with my collaborators Daniel Rabosky and Erin Westeen using micro-CT technology. Just like with medical CT scanning, micro-CT uses X-rays to digitize objects without damaging them – in our case, these scans occur at the fine scale of millionths of meters (micrometers). This means micro-CT scans are incredibly accurate at high resolutions. Even very tiny specimens and parts are preserved in vivid detail.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Maker Business — To make it through a tough business cycle, layoffs should be a last resort
Wearables — Hot glue’s undo button
Electronics — Level Conversion Hack
Python for Microcontrollers — Python on Microcontrollers Newsletter: CircuitPython available for 200 boards, MicroPython release and more! #Python #Adafruit #CircuitPython @micropython @ThePSF
Adafruit IoT Monthly — ESP Earrings, RP2040 WiFi, and more!
Microsoft MakeCode — Mechanical Coin Bank
EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey
New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — JP’s Product Pick of the Week 4/20/21 QT Py RP2040 @adafruit @johnedgarpark #adafruit #newproductpick
No comments yet.
Sorry, the comment form is closed at this time.