Please use this identifier to cite or link to this item:
|Scopus||Web of Science®||Altmetric|
|Title:||Disturbance mediates the effects of nutrients on developing assemblages of epibiota|
|Citation:||Austral Ecology, 2008; 33(8):951-962|
|Publisher:||Blackwell Science Asia|
|Nelson Valdivia, Jarrod D. Stehbens, Björn Hermelink, Sean D. Connell, Markus Molis and Martin Wahl|
|Abstract:||Local dynamics such as resource enhancement (e.g. nutrient supply) and stochastic events of destruction (disturbances that provide new space) are hypothesized to counteractively affect species diversity and composition. We tested the independent and interactive effects of nutrients and disturbance on the development of assemblages of epibiota attached to vertical surfaces in an oligotrophic system. Nutrient concentrations were manipulated at three levels (ambient, medium and high) while disturbance was manipulated by removing biomass at seven frequencies (0×, 2×, 3×, 4×, 5×, 7×, 12×). Nutrient and disturbance regimes had opposing effects on diversity such that species richness increased with resource enhancement (nutrients) and declined with disturbance. These results support the model that increased heterogeneity of distribution of limiting resources allows the coexistence of species with low and high resource requirements.|
|Keywords:||bottom-up; disturbance; diversity; marine; nutrient; top-down|
|Description:||© 2008 Ecological Society of Australia|
|Appears in Collections:||Earth and Environmental Sciences publications|
Environment Institute Leaders publications
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.