Title

The Role Of The Prostatic Vasculature As A Landmark For Nerve Sparing During Robot-Assisted Radical Prostatectomy

Keywords

Benthic algae; Diatoms; Hawaii; Nutrient-diffusing substrate; Pulse amplitude modulated (PAM) fluorometer; Stream

Abstract

To investigate the effects of nitrate enrichment, phosphate enrichment, and light availability on benthic algae, nutrient-diffusing clay flowerpots were colonized with algae at two sites in a Hawaiian stream during spring and autumn 2002 using a randomized factorial design. The algal assemblage that developed under the experimental conditions was investigated by determining biomass (ash-free dry mass and chlorophyll a concentrations) and composition of the diatom assemblage. In situ pulse amplitude-modulated fluorometry was also used to model photosynthetic rate of the algal assemblage. Algal biomass and maximum photosynthetic rate were significantly higher at the unshaded site than at the shaded site. These parameters were higher at the unshaded site with either nitrate, or to a lesser degree, nitrate plus phosphate enrichment. Analysis of similarity of diatom assemblages showed significant differences between shaded and unshaded sites, as well as between spring and autumn experiments, but not between nutrient treatments. However, several individual species of diatoms responded significantly to nitrate enrichment. These results demonstrate that light availability (shaded vs. unshaded) is the primary limiting factor to algal growth in this stream, with nitrogen as a secondary limiting factor. © 2011 Springer Science+Business Media B.V.

Publication Date

3-1-2012

Publication Title

European Urology

Volume

61

Issue

1

Number of Pages

571-576

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.eururo.2011.12.047

Socpus ID

84856405231 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84856405231

This document is currently not available here.

Share

COinS