«Thus, we were able to track
nitrogen from bat guano into the seeds of Dipteryx trees,» explains IZW scientist Christian Voigt.
Previous reports already demonstrated that tropical plants use animal - derived nutrients, for example
nitrogen from bat excreta.
Not exact matches
When doing so they said that they had two different kinds, one
from Mexican
bats (which had a higher
nitrogen content), and the other domestic
bat guano, which has a nutrient ratio of 3 -8-1.
To test if the trees profit
from the presence of
bats by incorporating nutrients
from bat excreta into their seeds, the researchers analysed a specific form of
nitrogen, the stable isotope 15N.
When
nitrogen isotopes change in response to variation in winter precipitation over the past 2,000 years, this signature is transferred
from the soil to plant leaves to insect to
bat and ultimately guano.
The fungus grows best in moist and humid conditions and in soil containing decomposing
nitrogen - rich matter
from bird, chicken or
bat excrement.