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Congeneric invasive versus native plants utilize similar inorganic nitrogen forms but have disparate use efficiencies
| Content Provider | Oxford Academic |
|---|---|
| Author | Yu, Hong-Wei He, Wei-Ming |
| Copyright Year | 2021 |
| Abstract | Aim: Soil inorganic nitrogen (N) has long been recognized to play an important role in plant invasions. Whilst comparing the N use strategies of multiple invasive versus native plant congeners along an entire N gradient is key to understanding plant invasion success, there are few related studies.MethodsWe conducted a potted experiment with six invasive and native congeneric pairs, which were subjected to 11 nitrate/ammonium (NO3−/NH4+) ratios (i.e. 100% NO3− at one end and 100% NH4+ at the other end), each with low- and high-N levels. Each species–N combination was replicated eight times, and thus there were 2112 pots in total. We measured the following traits: the total biomass, growth advantage, biomass allocation, leaf chlorophyll content and low-N tolerance.Important FindingsInvasive and native congeners grew well at any NO3−/NH4+ ratios, and their responses of growth, allocation and tolerance were approximately parallel along the 11 NO3−/NH4+ ratios across two N levels. Plant invaders grew larger and had greater chlorophyll contents, higher root biomass allocation and stronger low-N tolerance than their congeneric natives. These findings suggest that invasive and native plant congeners may utilize similar inorganic N forms (i.e. NO3− and NH4+) across an entire N composition gradient and that higher N use efficiencies could favor alien plants to invade new plant communities where congeneric natives are dominants. |
| Related Links | https://academic.oup.com/jpe/article-pdf/14/2/180/36610931/rtaa085.pdf |
| Ending Page | 190 |
| Starting Page | 180 |
| File Format | |
| ISSN | 17529921 |
| e-ISSN | 1752993X |
| DOI | 10.1093/jpe/rtaa085 |
| Journal | Journal of Plant Ecology |
| Issue Number | 2 |
| Volume Number | 14 |
| Language | English |
| Publisher | Oxford Academic |
| Publisher Date | 2021-04-01 |
| Access Restriction | Open |
| Subject Keyword | Biological Sciences Plant Ecology Plant Sciences and Forestry Science and Mathematics Biomass Allocation Plant Invasiveness Low-n Tolerance N Use Efficiency Chlorophyll Content |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Plant Science Ecology, Evolution, Behavior and Systematics |
