Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.jaridenv.2010.05.006
Titel (primär) Resource partitioning and interactions enable coexistence in a grass-shrub steppe
Autor Cipriotti, P.A.; Aguiar, M.R.
Quelle Journal of Arid Environments
Erscheinungsjahr 2010
Department OESA
Band/Volume 74
Heft 10
Seite von 1111
Seite bis 1120
Sprache englisch
Keywords Biotic interactions; Competition; Facilitation; Neighbourhood analyses; Niche separation; Patagonian steppes; Removal experiments; Spatial pattern analyses; Walter hypothesis
Abstract We revisited a growth-form removal experiment after 12 years with the aim to compare the long-term population responses of three shrub species. Specifically, we were interested to know if the resource partitioning and plant interactions act as complementary mechanisms of the shrub-grass coexistence. In 1983 different plots from grass-shrub Patagonian steppes were submitted to three treatments: control, grass-, and shrub-removal during three consecutive years. In 1997 we studied nine plots from the original experiment and recorded all shrubs to compare shrub density, population size structure, vitality, spatial patterns and neighbourhood interferences of three native and co-dominant shrub species: Mulinum spinosum, Senecio filaginoides, and Adesmia volckmanni. After 12 years of recovery, shrubs as a growth-form group, fully re-established in plots where they were removed and attained 75% higher density in grass-removal plots than in control plots. However, long-term population responses of Mulinum, Senecio, and Adesmia to removals were distinctive. On the other hand, negative and positive interferences among shrub species and between shrubs and grasses generated a complex network. Morphological and functional differences in shrub and grass species and their interactions at population level and long-term could be a key to achieve a better comprehension of shrub-grass coexistence from semi-arid ecosystems.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=9863
Cipriotti, P.A., Aguiar, M.R. (2010):
Resource partitioning and interactions enable coexistence in a grass-shrub steppe
J. Arid. Environ. 74 (10), 1111 - 1120 10.1016/j.jaridenv.2010.05.006