Science & Technology
; Life Sciences & Biomedicine
类目[WOS]:
Marine & Freshwater Biology
研究领域[WOS]:
Marine & Freshwater Biology
英文摘要:
Dolman (2014) argued that our recent finding (Wang etal., 2014) of no marked effect of submerged macrophytes on the chlorophyll a (Chl a) to total phosphorus (TP) relationship in Yangtze subtropical lakes may not necessarily be valid due to the statistical procedure used to analyse the relationship between these two variables. We agree with Dolman (2014) that a likelihood ratio test could provide an alternative statistical approach to analyse the effect of macrophytes on Chl a versus TP. However, we do not consider it would be appropriate to use the test on only a limited sub-data set corresponding to where TP values overlap for the vegetated and non-vegetated states, as suggested by Dolman (2014). Besides testing slopes of the log(10)(Chl a)-log(10)(TP) relationship, we compared log(10)(Chl a)/log(10)(TP) values between vegetated and non-vegetated lakes at a range of overlapping TP concentrations (Wang etal., 2014). The conclusion drawn by Dolman (2014) from a highly cited work on subtropical lakes in Florida was shown to be invalid. Re-analysis of these lakes demonstrated similar results to those found in Yangtze subtropical lakes. We therefore consider that our original conclusions are valid and that submersed macrophytes in subtropical lakes do not necessarily exert the same strong effects on algal turbidity as in temperate lakes. 10.1111/(ISSN)1365-2427
