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Nitrogen isotope ratios shift with plant size in tropical bromeliads
| Content Provider | Semantic Scholar |
|---|---|
| Author | Reich, Alexandra Ewel, John J. Nadkarni, Nalini M. Dawson, Todd Evans, Richard D. |
| Copyright Year | 2003 |
| Abstract | We describe an ontogenetic shift in nitrogen (N) isotopic values in two rosette-forming epiphytic bromeliads. Leaf tissue N isotope values of small individuals of two bromeliad species (mean −6.2‰) differed from those of large individuals within each species (mean −0.5‰). Using references for potential N sources, we calculated the relative contribution of autochthonous (soil-derived through leaf litter) and allochthonous (atmospheric deposition) N with a two-member mixing model. Atmospheric sources contributed as much as 77–80% of the N in small individuals, whereas soil-derived N contributed 64–72% (conservative reference value) to 100% (less conservative reference value) of leaf tissue N in large plants. Shifts in N source with increasing plant size may be important aspects of rainforest complexity, an understudied aspect of ecosystem diversity. |
| Starting Page | 587 |
| Ending Page | 590 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s00442-003-1386-1 |
| PubMed reference number | 14513351 |
| Journal | Medline |
| Volume Number | 137 |
| Alternate Webpage(s) | https://nalininadkarni.com/wp-content/uploads/2019/01/Nitrogen-isotope-ratios-shift-with-plant-size-in-tropical-bromeliads.pdf |
| Alternate Webpage(s) | https://people.clas.ufl.edu/jackewel/files/reich-et-al-nitrogen-oecologia-2003.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s00442-003-1386-1 |
| Journal | Oecologia |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
