Submerged aquatic vegetation in Cook's Bay, Lake Simcoe: Assessment of changes in response to increased water transparency

2011 ◽  
Vol 37 ◽  
pp. 72-82 ◽  
Author(s):  
David C. Depew ◽  
Adam J. Houben ◽  
Ted Ozersky ◽  
Robert E. Hecky ◽  
Stephanie J. Guildford
Keyword(s):  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Water Transparency ◽  
Lake Simcoe

Differing temporal patterns of Chara hornemannii cover correlate to alternate regimes of phytoplankton and submerged aquatic-vegetation dominance

2012 ◽  
Vol 63 (11) ◽  
pp. 1005 ◽  
Author(s):  
Thomas A. Frankovich ◽  
Jordan G. Barr ◽  
Douglas Morrison ◽  
James W. Fourqurean
Keyword(s):  
Water Quality ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Seasonal Pattern ◽  
Quality Parameters ◽  
Environmental Stressors ◽  
Water Transparency ◽  
Environmental Drivers ◽  
Resource Managers ◽  
High Nutrient

Cover of the alga Chara hornemannii Wallman and water-quality parameters were measured over a 3-year period in adjacent mangrove subestuaries in Florida Bay, so as to describe temporal variability and infer relationships between Chara cover and water quality that will assist resource managers to restore Chara abundance to historically higher levels. A seasonal pattern of Chara cover was observed in the Alligator Creek subestuary that coincided with seasonal changes in water transparency in a relatively high-nutrient and phytoplankton environment. In contrast, higher Chara cover in the relatively low-nutrient and phytoplankton-abundance McCormick Creek subestuary did not exhibit a repeatable seasonal pattern, but was temporally negatively correlated with salinity and water depth. These observations suggest that water transparency may determine the importance of the salinity driver in these Chara communities. The present study demonstrates the differential importance of water quality and environmental drivers in estuaries distinguished by alternate regimes of phytoplankton and submerged aquatic-vegetation (SAV) dominance, and explains how differences in local estuarine geography may filter the response of SAV communities to environmental stressors.

scholarly journals Novel approach for large‐scale monitoring of submerged aquatic vegetation – a nationwide example from Sweden

2021 ◽  
Author(s):  
Silvia Huber ◽  
Lars B. Hansen ◽  
Lisbeth T. Nielsen ◽  
Mikkel L. Rasmussen ◽  
Jonas Sølvsteen ◽  
...  
Keyword(s):  
Large Scale ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Novel Approach

Influence of invasive submerged aquatic vegetation ( E. densa ) on currents and sediment transport in a freshwater tidal system

2021 ◽  
Author(s):  
Jessica R. Lacy ◽  
Madeline R. Foster‐Martinez ◽  
Rachel M. Allen ◽  
Judith Z. Drexler
Keyword(s):  
Sediment Transport ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation

scholarly journals The effect of ice phenology exerted on submerged macrophytes through physicochemical parameters and the phytoplankton abundance

2015 ◽  
Author(s):  
Wojciech Ejankowski ◽  
Tomasz Lenard
Keyword(s):  
Physicochemical Parameters ◽  
Aquatic Vegetation ◽  
Myriophyllum Spicatum ◽  
Ice Cover ◽  
Water Transparency ◽  
Ceratophyllum Demersum ◽  
Total Biomass ◽  
Eutrophic Lakes ◽  
Macrophyte Species ◽  
Tn:Tp Ratio

<p>The physicochemical parameters of water, the concentration of chlorophyll-<em>a</em> and the submerged aquatic vegetation (SAV) were studied to evaluate the effects of different winter seasons on the biomass of macrophytes in shallow eutrophic lakes. We hypothesised that a lack of ice cover or early ice-out can influence the physicochemical parameters of water and thus change the conditions for the development of phytoplankton and SAV. The studies were conducted in four lakes of the Western Polesie region in mid-eastern Poland after mild winters with early ice-out (MW, 2011 and 2014) and after cold winters with late ice-out (CW, 2010, 2012 and 2013). The concentrations of soluble and total nitrogen, chlorophyll-<em>a</em> and the TN:TP ratio in the lakes were considerably higher, whereas the concentration of soluble and total phosphorus and water transparency were significantly lower after the MW compared with after the CW. No differences were found in water temperature, reaction and electrolytic conductivity. Low water turbidity linked with low concentration of chlorophyll-<em>a</em> after the CW resulted in increased water transparency and the total biomass of the SAV. The negative effect of the MW on the macrophyte species was stronger on more sensitive species (<em>Myriophyllum spicatum</em>,<em> Stratiotes aloides</em>) compared with shade tolerant <em>Ceratophyllum demersum</em>. Our findings show that the ice cover phenology affected by climate warming can change the balance between phytoplankton and benthic vegetation in shallow eutrophic lakes, acting as a shift between clear and turbid water states. We speculate that various responses of macrophyte species to changes in the water quality after two winter seasons (CW and MW) could cause alterations in the vegetation biomass, particularly the expansion of shade tolerance and the decline of light-demanding species after a series of mild winters.</p>

Long-term phosphorus removal in Florida aquatic systems dominated by submerged aquatic vegetation

2003 ◽  
Vol 20 (1) ◽  
pp. 45-63 ◽  
Author(s):  
Robert L. Knight ◽  
Binhe Gu ◽  
Ronald A. Clarke ◽  
Jana M. Newman
Keyword(s):  
Phosphorus Removal ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Aquatic Systems

scholarly journals Identification and Mapping of Marine Submerged Aquatic Vegetation in Shallow Coastal Waters with WorldView-2 Satellite Data

2016 ◽  
Vol 75 (sp1) ◽  
pp. 1287-1291 ◽  
Author(s):  
Tin Hoang ◽  
Rodrigo Garcia ◽  
Michael O'Leary ◽  
Ravi Fotedar
Keyword(s):  
Satellite Data ◽  
Coastal Waters ◽  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Shallow Coastal Waters
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