Institute of Low Temperature Science, Hokkaido University

First direct measurement of food transit time through the gastrointestinal tracts of plant-eating primates using isotopic tagging

Abstract The time it takes for food to transit animal gastrointestinal tracts is essential information to fields from organismal evolution to ecosystem ecology. Nevertheless, current estimation methods do not measure food directly, are impractical for many species and often requi...

High-Temporal-Resolution Variations in Snowfall Water Isotopes Driven by Cloud and Precipitation Processes

Stable water isotopes in precipitation serve as a useful tool for understanding past and present atmospheric water cycles, including evaporation, mixing, transport, and precipitation. However, observational studies focusing on changes in stable water isotopes during cloud and pre...

Biogeochemical controls on the concentrations and stable isotope compositions of sea-ice particulate organic matters in the Southern Ocean

Abstract. The primary production and zooplankton life cycles in the Southern Ocean synchronize with seasonal sea ice melting, during which particulate organic carbon (POC) and nitrogen (PN), including ice algae, are supplied from sea ice into the water column. To understand carbo...