Posts Tagged: environmental science

Meet Yoko Iwamoto

Meet Yoko Iwamoto

  Water is an all-encompassing part of Yoko Iwamoto’s life. She grew up by the sea, influencing her decision to study the ocean. Her studies have taken her as far north as the Bering Sea and as far south as the Equator. Now a marine chemist at Hiroshima University, Iwamoto studies the interaction between Earth’s… Read more

Hopping to the Frontier: Following a frog’s evolutionary movements

Hopping to the Frontier: Following a frog’s evolutionary movements

  A common species of Asian tree frog may actually be two separate species according to new genetic data collected by an international group of scientists.  If the two groups of frogs are confirmed to be different species, assigning their scientific names may require searching historical records of foreign explorers in Japan during the 1800s…. Read more

Japanese Tadpoles Relax in Hot Springs

Japanese Tadpoles Relax in Hot Springs

One type of juvenile frog can survive in hot onsen water Japanese tadpoles can live and grow in natural hots springs, or onsen, with water temperatures as high as 46.1oC (115oF).  Living in onsen may benefit the tadpoles’ immune systems, speed their growth, and allow the tadpoles to survive on small volcanic islands where there… Read more

How many organisms do live in this aquatic habitat?

How many organisms do live in this aquatic habitat?

Environmental DNA survey surrounding you     The aim of this new measurement method is to estimate the distribution of aquatic animals using droplet digital polymerase chain reaction (ddPCR) in order to quantify the number of target DNA copies present. This method focuses on quantification accuracy for low environmental DNA (eDNA) concentrations, because the eDNA… Read more

What are the mechanisms of zooxanthella expulsion from coral?

What are the mechanisms of zooxanthella expulsion from coral?

Coral bleaching, which often results in the mass mortality of corals and in the collapse of coral reef ecosystems, has become an important issue around the world, with the number of coral reefs decreasing annually. Associate Professor Kazuhiko Koike and Ms. Lisa Fujise of the Graduate School of Biosphere Science at Hiroshima University and their… Read more