Journal ArticleDOI
Nutrient Limitation of Net Primary Production in Marine Ecosystems
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TLDR
There is a feeling among many limnologists and environmental engineers who study lakes that marine ecosystems also probably are phosphorus limited, and environmental management agencies often assume that phosphorus limitation in marine ecosystems is the rule.Abstract:
The question of nutrient limitation of primary production in estuaries and other marine ecosystems has engendered a great deal of debate. Although nitrogen is often named as the primary limiting nutrient in seawater (3, 17-19, 50, 52, 55, 61, 76, 80), this is by no means universally accepted. Many workers have argued that phosphorus is limiting (58, 71), that both nitrogen and phosphorus can simultaneously be limiting (9), or that primary production can switch seasonally from being nitrogen-limited to phosphorus-limited (6, 46). Others argue that nutrients are not limiting at all in many marine ecosystems, including highly oligotrophic waters (15). To some extent these disagreements result from poor communication due to different definitions of nutrient limitation. Considerable argument also occurs over the various methods and approaches used to estimate nutrient limitation. Limnologists in particular have tended to be critical of the methods often used to study nutrient limitation in marine ecosystems (23). Nutrient limitation in lakes has historically received more study than that in estuaries, and most mesotrophic and eutrophic north-temperate lakes are phosphorus limited (8, 62, 63, 66, 81). Thus, there is a feeling among many limnologists and environmental engineers who study lakes that marine ecosystems also probably are phosphorus limited. Lacking strong mechanistic arguments to explain why nutrient limitation might be different in estuaries than in lakes, environmental management agencies often assume that phosphorus limitation in marine ecosystems is the rule.read more
Citations
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Book ChapterDOI
Controls Acting on Benthic Macrophyte Communities in a Temperate and a Tropical Estuary
Journal ArticleDOI
A “toy model” analysis of causes of nitrogen limitation in terrestrial ecosystems
TL;DR: In this article , a simple simulation model is used to show that discontinuous losses of ammonium and nitrate, normally forms of N whose losses organisms can control, can be uncontrollable by organisms and can contribute to N limitation under realistic conditions.
Dissertation
Effects of turbidity on the kelp Ecklonia radiata
TL;DR: In this article, the authors proposed a co-authorship approach for the acclimation of the kelp Ecklonia radiata across a turbidity gradient in the Hauraki Gulf.
Journal Article
Experimental Studies on Silicate as the Limiting Nutrient in Altering Phytoplankton Community Structure
R. Shanthi,A. Vinoth Gowtham,L. Senthilnathan,D. Poornima,R. K. Sarangi,Thirunavukarasu Thangaradjou +5 more
TL;DR: The regression trend recorded in the present study could be used as the positive signal in mapping silicate using remote sensing techniques and increased phytoplankton growth rate at tank 5 when compared to control substantially proved the uptake of silicate by phy Topolankton community dominated by diatoms.
References
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Journal ArticleDOI
Particulate organic matter flux and planktonic new production in the deep ocean
TL;DR: The primary production in the oceans results from allochthonous nutrient inputs to the euphotic zone (new production) and from nutrient recycling in the surface waters (regenerated production) as discussed by the authors.
Journal ArticleDOI
Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment
TL;DR: Removal of phosphate from detergents is not likely to slow the eutrophication of coastal marine waters, and its replacement with nitrogen-containing nitrilotriacetic acid may worsen the situation.
Journal ArticleDOI
Nutrient limitation of phytoplankton in freshwater and marine environments: A review of recent evidence on the effects of enrichment1
R. E. Hecky,Peter Kilham +1 more
TL;DR: It is concluded that the extent and severity of N limitation in the marine environment remain an open question, despite the fact that by the late seventies the evidence for P limitation had become so great that phosphorus control was recommended as the legislated basis for controlling eutrophication in North American and European inland waters.