| Kategorie |
Textpublikation |
| Referenztyp |
Zeitschriften |
| DOI |
10.1111/1365-2745.70052
|
Lizenz  |
|
| Titel (primär) |
Neglecting non-vascular plants leads to underestimation of grassland plant diversity loss under experimental nutrient addition |
| Autor |
Virtanen, R.; Borer, E.T.; Crawley, M.; Ebeling, A.; Harpole, W.S.
; Risch, A.C.; Roscher, C.; Schütz, M.; Seabloom, E.W.; Eskelinen, A. |
| Quelle |
Journal of Ecology |
| Erscheinungsjahr |
2025 |
| Department |
iDiv; PHYDIV |
| Sprache |
englisch |
| Topic |
T5 Future Landscapes |
| Daten-/Softwarelinks |
https://doi.org/10.6073/pasta/4df0b585d58fc6778b7ff00833e9546d |
| Supplements |
https://besjournals.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2F1365-2745.70052&file=jec70052-sup-0001-supinfo.docx |
| Keywords |
bryophytes; community diversity; eutrophication; fertilizer; grassland; grazing; light limitation; Nutrient Network (NutNet) |
| Abstract |
- Nutrient availability and grazing are known as main
drivers of grassland plant diversity, and increased nutrient
availability and long-term cessation of grazing often decrease
local-scale plant diversity. Experimental tests of mechanisms
determining plant diversity focus mainly on vascular plants (VP),
whereas non-vascular plants (NVP, here bryophytes) have been ignored. It
is therefore not known how the current models based on VPs predict the
rates of total (NVP + VP) losses in plant diversity.
- Here we used plant community data, including VPs and
NVPs, from nine sites in Europe and North America and belonging to the
Nutrient Network experiment, to test whether neglecting NVPs leads to
biased estimates of plant diversity loss rates. The plant communities
were subjected to factorial addition of nitrogen (N), phosphorus (P),
potassium with micronutrients (K+μ), as well as a grazing exclusion combined with multi-nutrient fertilization (NPK+μ) treatment.
- We found that nutrient additions reduced both NVP and
VP species richness, but the effects on NVP species richness were on
average stronger than on VPs: NVP species richness decreased 67%, while
VP species richness decreased 28%, causing their combined richness to
decrease 38% in response to multi-nutrient (NPK+μ) fertilization. Thus, VP diversity alone underestimated total plant diversity loss by 10 percentage points.
- Although NVP and VP species diversities similarly declined in response to N and NPK+μ fertilizations, the evenness of NVPs increased and that of VPs remained unchanged. NP, NPK+μ fertilization and NPK+μ
fertilization combined with grazing exclusion, associated with
decreasing light availability at ground level, led to the strongest loss
of NVP species or probability of NVP presence. However, grazing did not
generally mitigate the fertilization effects.
- Synthesis. In nine grassland sites in Europe
and North America, nutrient addition caused a larger relative decline in
non-vascular plant (NVP) than vascular plant species richness. Hence,
not accounting for NVPs can lead to underestimation of losses in plant
diversity in response to continued nutrient pollution of grasslands.
|
| dauerhafte UFZ-Verlinkung |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=30715 |
Virtanen, R., Borer, E.T., Crawley, M., Ebeling, A., Harpole, W.S., Risch, A.C., Roscher, C., Schütz, M., Seabloom, E.W., Eskelinen, A. (2025):
Neglecting non-vascular plants leads to underestimation of grassland plant diversity loss under experimental nutrient addition
J. Ecol. 10.1111/1365-2745.70052 |
