dc.contributor.author | Kregting, Louise T. | |
dc.contributor.author | Hurd, Catriona L. | |
dc.contributor.author | Pilditch, Conrad A. | |
dc.contributor.author | Stevens, Craig L. | |
dc.date.accessioned | 2013-12-04T02:16:23Z | |
dc.date.available | 2013-12-04T02:16:23Z | |
dc.date.copyright | 2008-04 | |
dc.date.issued | 2008 | |
dc.identifier.citation | Kregting, L. T., Hurd, C. L., Pilditch, C. A., & Stevens, C. L. (2008). The relative importance of water motion on nitrogen uptake by the subtidal macroalga adamsiella chauvinii (rhodophyta) in winter and summer. Journal of Phycology, 44(2), 320-330. | en_NZ |
dc.identifier.uri | https://hdl.handle.net/10289/8284 | |
dc.description.abstract | The influence of seawater velocity (1.5–12 cm • s⁻¹) on inorganic nitrogen (N) uptake by the soft-sediment perennial macroalga Adamsiella chauvinii (Harv.) L. E. Phillips et W. A. Nelson (Rhodophyta) was determined seasonally by measuring uptake rate in a laboratory flume. Regardless of N tissue content, water velocity had no influence on NO₃⁻ uptake in either winter or summer, indicating that NO₃⁻-uptake rate was biologically limited. However, when thalli were N limited, increasing water velocity increased NH₄⁺ uptake, suggesting that mass-transfer limitation of NH₄⁺ is likely during summer for natural populations. Uptake kinetics (Vmax, Ks) were similar among three populations of A. chauvinii at sites with different mean flow speeds; however, uptake rates of NO₃⁻ and NH₄⁺ were lower in summer (when N status was generally low) than in winter. Our results highlight how N uptake can be affected by seasonal changes in the physiology of a macroalga and that further investigation of N uptake of different macroalgae (red, brown, and green) during different seasons is important in determining the relative influence of water velocity on nutrient uptake. | en_NZ |
dc.language.iso | en | en_NZ |
dc.publisher | Wiley | en_NZ |
dc.relation.ispartof | Journal of Phycology | |
dc.relation.uri | http://onlinelibrary.wiley.com/doi/10.1111/j.1529-8817.2008.00484.x/abstract | en_NZ |
dc.subject | Adamsiella chauvinii | en_NZ |
dc.subject | ammonium | en_NZ |
dc.subject | nitrate | en_NZ |
dc.subject | nitrogen uptake | en_NZ |
dc.subject | subtidal macroalgae | en_NZ |
dc.subject | water velocity | en_NZ |
dc.title | The relative importance of water motion on nitrogen uptake by the subtidal macroalga adamsiella chauvinii (rhodophyta) in winter and summer | en_NZ |
dc.type | Journal Article | en_NZ |
dc.identifier.doi | 10.1111/j.1529-8817.2008.00484.x | en_NZ |
dc.relation.isPartOf | Journal of Phycology | en_NZ |
pubs.begin-page | 320 | en_NZ |
pubs.elements-id | 33149 | |
pubs.end-page | 330 | en_NZ |
pubs.issue | 2 | en_NZ |
pubs.volume | 44 | en_NZ |