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@article{824921,
author = {Chytrý, Milan and Hejcman, Michal and Hennekens, Stephan M. and Schellberg, Jürgen},
article_location = {Oxford},
article_number = {2},
keywords = {Calcium; Long-term fertilization; Meadow; Nardus grassland; Nitrogen; Phosphorus limitation; Phytosociology; Potassium; Vegetation classification},
language = {eng},
issn = {1402-2001},
journal = {Applied Vegetation Science},
title = {Changes in vegetation types and Ellenberg indicator values after 65 years of fertilizer application in the Rengen Grassland Experiment, Germany},
url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1654-109X.2009.01011.x/abstract},
volume = {12},
year = {2009}
}
TY - JOUR
ID - 824921
AU - Chytrý, Milan - Hejcman, Michal - Hennekens, Stephan M. - Schellberg, Jürgen
PY - 2009
TI - Changes in vegetation types and Ellenberg indicator values after 65 years of fertilizer application in the Rengen Grassland Experiment, Germany
JF - Applied Vegetation Science
VL - 12
IS - 2
SP - 167-176
EP - 167-176
PB - Wiley-Blackwell
SN - 14022001
KW - Calcium
KW - Long-term fertilization
KW - Meadow
KW - Nardus grassland
KW - Nitrogen
KW - Phosphorus limitation
KW - Phytosociology
KW - Potassium
KW - Vegetation classification
UR - http://onlinelibrary.wiley.com/doi/10.1111/j.1654-109X.2009.01011.x/abstract
N2 - Question: How does semi-natural grassland diversify after 65 years of differential application of Ca, N, P, and K fertilizers? Is fertilizer application adequately reflected by the Ellenberg indicator values (EIVs)? Location: Eifel Mountains, West Germany. Methods: The Rengen Grassland Experiment (RGE) was established in an oligotrophic grassland in 1941. Six fertilizer treatments (Ca, CaN, CaNP, CaNP-KCl, CaNP-K2SO4, and unfertilized control) were applied annually in five complete randomized blocks. Species composition of experimental plots was sampled in 2006 and compared with constancy tables representing grassland types in a phytosociological monograph of a wider area. Each plot was matched to the most similar community type using the Associa method. Mean EIVs were calculated for each treatment. Results: The control plots supported oligotrophic Nardus grassland of the Polygalo-Nardetum association (Violion caninae alliance). Vegetation in the Ca and CaN treatments mostly resembled montane meadow of Geranio-Trisetetum (Polygono-Trisetion). Transitional types between Poo-Trisetetum and Arrhenatheretum (both from the Arrhenatherion alliance) developed in the CaNP treatment. In the CaNP-KCl and CaNP-K2SO4 treatments, vegetation corresponded to the mesotrophic Arrhenatheretum meadow. Major discontinuity in species composition was found between control, Ca, and CaN treatments, and all treatments with P application. EIVs for both nutrients and soil reaction were considerably higher in P treatments than in Ca and CaN treatments. Surprisingly, the control plots had the lowest EIVs for continentality and moisture, although these factors had not been manipulated in the experiment. Conclusions: Long-term fertilizer application can create different plant communities belonging to different phytosociological alliances and classes, even within a distance of a few meters. Due to their correlated nature, EIVs can erroneously indicate changes in factors that actually did not change, but co-varied with factors that did change. In P-limited ecosystems, EIVs for nutrients may indicate availability of P rather than N.
ER -
CHYTRÝ, Milan, Michal HEJCMAN, Stephan M. HENNEKENS and Jürgen SCHELLBERG. Changes in vegetation types and Ellenberg indicator values after 65 years of fertilizer application in the Rengen Grassland Experiment, Germany. \textit{Applied Vegetation Science}. Oxford: Wiley-Blackwell, 2009, vol.~12, No~2, p.~167-176. ISSN~1402-2001.
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