Comment on 'Impacts of aeolian dust deposition on phytoplankton dynamics in Queensland coastal waters' by Shaw et al. (2008)

2010 ◽  
Vol 61 (4) ◽  
pp. 502 ◽  
Author(s):  
Doug Mackie
Keyword(s):  
Causative Agent ◽  
Coastal Waters ◽  
Dust Storm ◽  
Phytoplankton Dynamics ◽  
Dust Deposition ◽  
Aeolian Dust

The central premise of the paper by Shaw et al. (2008) (hereafter SGM) is that phytoplankton in coastal waters of Queensland, Australia, were nutrient-limited and that biomass increased immediately following a large dust storm in October 2002. I will show that (i) the timing of the phytoplankton response precludes the dust storm as a causative agent for chlorophyll increases and (ii) it is not clear that there was actually any change in chlorophyll in response to the dust storm.

Impacts of aeolian dust deposition on phytoplankton dynamics in Queensland coastal waters

2008 ◽  
Vol 59 (11) ◽  
pp. 951 ◽  
Author(s):  
Emily C. Shaw ◽  
Albert J. Gabric ◽  
Grant H. McTainsh
Keyword(s):  
Coastal Waters ◽  
Standing Stock ◽  
Nutrient Budget ◽  
Dust Storms ◽  
Dust Deposition ◽  
Transport Modelling ◽  
Dust Transport ◽  
Aeolian Dust ◽  
Modelling Analysis

Aeolian dust deposition has been shown to stimulate phytoplankton growth in various oligotrophic oceanic regions of the northern hemisphere. The present study investigated the relationship between the change in phytoplankton biomass in Queensland coastal waters and aeolian dust deposition during the severe October 2002 dust storm, using satellite-derived chlorophyll concentrations. A response in phytoplankton standing stock immediately following dust deposition from this event was found in the area of maximal dust deposition, as defined by a previous dust transport modelling analysis. Standing stock levels increased to 1.5–2 times the long-term mean. This is the first documented episode of a dust fertilisation event in Australian coastal waters and, given the high frequency of dust storms in northern Australia, demonstrates that aeolian delivery of nutrients may be an important factor in future regional nutrient budget analyses.

Aeolian dust deposition rates in Northern French forests and inputs to their biogeochemical cycles

2013 ◽  
Vol 80 ◽  
pp. 281-289 ◽  
Author(s):  
Émeline Lequy ◽  
Arnaud Legout ◽  
Sébastien Conil ◽  
Marie-Pierre Turpault
Keyword(s):  
Biogeochemical Cycles ◽  
Dust Deposition ◽  
Deposition Rates ◽  
Aeolian Dust

Dynamics on the Interaction between Vegetation Growth and Aeolian Dust Deposition

2011 ◽  
Vol 356-360 ◽  
pp. 2430-2433 ◽  
Author(s):  
Fei Fan Zhang ◽  
Hua Yong Zhang ◽  
Tou Sheng Huang
Keyword(s):  
Theoretical Basis ◽  
Equilibrium Distribution ◽  
Simulation Analysis ◽  
Critical Curve ◽  
The Other ◽  
Dust Deposition ◽  
Vegetation Growth ◽  
Aeolian Dust ◽  
Interior Equilibrium ◽  
The Stability

From the holistic perspective, a new dynamic model is proposed in this research to investigate the interaction between vegetation growth and aeolian dust deposition. Three cases of equilibrium distribution can be obtained and the stability of interior equilibriums is determined. When there is a stable interior equilibrium, a critical curve exists and separates the coexistent area where vegetation can survive in the environment of aeolian dust deposition, from the other area where vegetation is to be excluded. Simulation analysis further reveals the variation of the critical curve with the parameters and the anthropic influences. The critical curve and the coexistent equilibrium described by the model may be used as a theoretical basis to evaluate the feasibility of vegetation restoration in the environment of aeolian dust deposition.

scholarly journals A super Asian dust storm over the East and South China Seas: Disproportionate dust deposition

2013 ◽  
Vol 118 (13) ◽  
pp. 7169-7181 ◽  
Author(s):  
Shih-Chieh Hsu ◽  
Fujung Tsai ◽  
Fei-Jan Lin ◽  
Wei-Nai Chen ◽  
Fuh-Kwo Shiah ◽  
...  
Keyword(s):  
South China ◽  
Dust Storm ◽  
Asian Dust ◽  
China Seas ◽  
Dust Deposition ◽  
Asian Dust Storm

scholarly journals A 37,000-year environmental magnetic record of aeolian dust deposition from Burial Lake, Arctic Alaska

2015 ◽  
Vol 128 ◽  
pp. 81-97 ◽  
Author(s):  
J.M. Dorfman ◽  
J.S. Stoner ◽  
M.S. Finkenbinder ◽  
M.B. Abbott ◽  
C. Xuan ◽  
...  
Keyword(s):  
Dust Deposition ◽  
Aeolian Dust ◽  
Arctic Alaska ◽  
Magnetic Record

scholarly journals Silicate as the Probable Causative Agent for the Periodic Blooms in the Coastal Waters of South Andaman Sea

2014 ◽  
pp. 37-45 ◽  
Author(s):  
Karthik Raji ◽  
Arun Kumar Muthuraj ◽  
Gadi Padmavati
Keyword(s):  
Causative Agent ◽  
Coastal Waters ◽  
Algal Blooms ◽  
Phytoplankton Growth ◽  
Andaman Sea ◽  
Diatom Species ◽  
Key Factors ◽  
Bay Area ◽  
South Andaman

Periodic algal blooms of three diatom species such as Coscinodiscus centralis, Rhizosolenia alata andRhizosolenia imbricata were observedduringSeptember 2011, December 2011 and March 2012 in the coastal waters of South Andaman Sea at Junglighat bay area (11° 39 N and 92° 43 E). The blooms were intense, with Coscinodiscus at aconcentration of 89,000 cells mL-1(contributing 85 to 98% to the total phytoplanktonpopulation), Rhizosolenia alataat a concentration of 13,000 cellsmL-1(86-93%) and Rhizosolenia imbricata at aconcentration of 19,000 cells. mL-1(91-99%). Nutrients, most importantly nitrate and silicate have emerged as the key factors controlling phytoplankton growth in this area.

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