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Can I read Nitrogen Fixation Responds to Soil Nitrogen at Low but Not High Light in Two Invasive Understory Species on EtoBox?
Nitrogen Fixation Responds to Soil Nitrogen at Low but Not High Light in Two Invasive Understory Species by Colleen B. Schmidt; Jennifer L. Funk; Amelia A. Wolf; Palani R. Akana; Matthew I. Palmer; Duncan N. L. Menge is a Environmental Science article available to read on EtoBox.
What is Nitrogen Fixation Responds to Soil Nitrogen at Low but Not High Light in Two Invasive Understory Species about?
Light and soil nitrogen availability can be strong controls of plant nitrogen (N) fixation, but data on how understory N-fixing plants respond to these drivers are limited despite their important role in ecosystem N cycling. Furthermore, ecosystem N cycling can be altered by the introduction of species with nutrient use patterns that differ from natives. We assessed how N fixation of two exotic, understory species responded to varying light and soil N environments. We sampled leaf tissue from Mimosa pudica L., Desmodium triflorum (L.) DC., and a nonfixing reference plant ( Axonopus ) growing in control and two N fertilization treatments under either N-fixing or non-N-fixing trees, which may alter local soil nutrient cycling, across a range of light conditions. We measured N fixation with 15 N isotope dilution, and ensured that N-fixing neighbour trees were in fact fixing N. All understory plants were wild-growing species not native to the study location. Desmodium and Mimosa acquired 82.6% and 71.6% of their nitrogen from fixation (%N dfa ) in the control, compared to 66.8% and 58.1% in the +10 g N m −2 year −1 treatment and 73.1% and 64.7% in the +15 g N m −2 year −1 treatment. Th
Who reads Nitrogen Fixation Responds to Soil Nitrogen at Low but Not High Light in Two Invasive Understory Species?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Colleen B. Schmidt; Jennifer L. Funk; Amelia A. Wolf; Palani R. Akana; Matthew I. Palmer; Duncan N. L. Menge
- Publisher
- Wiley
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)