Data from: Calcium and strontium stable isotopes reveal similar behaviors of essential Ca and non-essential Sr in stream food webs

Recent studies showed the potential of stable isotopes of the
macronutrient calcium (δ44/40Ca) and non-essential strontium (δ88/86Sr) as
new trophic level indicators in terrestrial vertebrates and marine teleost
fishes. In this study, we tested whether similar Ca and Sr isotopic
fractionation trends existed in macroinvertebrate dominated stream food
webs compared to vertebrates despite their physiological differences. We
have determined the δ44/40Ca and δ88/86Sr values as well as the
87Sr/86Sr ratios of stream macroinvertebrates and of small gobies
and of their potential metal sources (stream water, periphyton,
terrestrial plant litter) collected in May and November 2018 in upper and
lower reaches of two streams in the Lake Biwa catchment, central Japan.
The data are organized in different spreadsheets for each sample type
(Rock cobbles, Stream water, Periphyton, Plant litter, Aquatic
macroinvertebrates, fishes). Each spreadsheet contains information of the
sample type including stream name (Ado, Yasu), stream location (Upper,
Lower), sampling month (May, November), where relevant the order and
scientifc name of specimens, the δ44/40Ca and δ88/86Sr
values with two standard deviations, the 87Sr/86Sr ratios with
two standard errors, the Ca and Sr concentrations and the calculated
log(Sr/Ca) ratios of the samples.