Geomorphic and sediment volume responses of a coastal dune complex following invasive vegetation removal

2013 ◽  
Vol 38 (10) ◽  
pp. 1148-1159 ◽  
Author(s):  
Jordan B. R. Eamer ◽  
Ian B. Darke ◽  
Ian J. Walker
Keyword(s):  
Coastal Dune ◽  
Vegetation Removal ◽  
Sediment Volume

scholarly journals Can Vegetation Removal Successfully Restore Coastal Dune Biodiversity?

2020 ◽  
Vol 10 (7) ◽  
pp. 2310 ◽  
Author(s):  
Tania Leah Fairfax Bird ◽  
Amos Bouskila ◽  
Elli Groner ◽  
Pua Bar Kutiel
Keyword(s):  
Temporal Trends ◽  
Coastal Dune ◽  
Rapid Urbanization ◽  
Vegetation Removal ◽  
Suitable Habitats ◽  
Negative Impacts ◽  
Mobile Dune ◽  
Dune Fixation ◽  
Mobile Dunes ◽  
Taxonomic Groups

Coastal dune habitats have been declining globally over the last several decades due to rapid urbanization. Within remaining dune systems, dune fixation has resulted in further losses of mobile dunes with negative impacts on their associated species. Some studies suggest vegetation removal can initially promote habitat heterogeneity, and increase availability of suitable habitats for psammophile, xeric and endemic mobile dune species, but longer-term responses are generally unknown. We investigated the temporal trends of four taxonomic groups to determine the effect of vegetation removal on dune assemblages over a 12-year period at an LTER site. Three different forms of removal are investigated here—removal in a grid form on fixed dunes, removal of the wind-facing slope vegetation on semi-fixed dunes and opportunistic off-road driving on disturbed dunes. Results were varied across taxa, highlighting the need for multi-taxa monitoring in conservation and restoration management. Overall, fixed dune treatment had very little effect, while a stronger response was found in semi-fixed treatments in particular for mobile dune indicator species, which showed evidence of recolonization within a few years following treatment. Disturbed dunes were most similar to mobile dunes for animal taxa indicating that pulse removal may not be as effective as continuous press disturbance. Nevertheless, a less destructive form of disturbance such as re-introduction of grazing might be preferable and requires further investigation.

Operation intensification methods of aggressive industrial sewage neutralization facilities

2020 ◽  
Vol 76 (11) ◽  
pp. 1149-1153
Author(s):  
N. S. Tsarev ◽  
V. I. Aksenov ◽  
I. I. Nichkova
Keyword(s):  
Cold Water ◽  
Specific Productivity ◽  
Technological Properties ◽  
Technological Parameters ◽  
Preliminary Heating ◽  
Sediment Treatment ◽  
Circulating Water ◽  
Equipment Operation ◽  
Sediment Volume ◽  
Industrial Sewage

To neutralize the waste pickling solutions and rinsing water, resulting from cleaning metal products s surface of rust by acids solutions, lime is used. Being cheap, this method of sewage neutralization has considerable drawbacks. Forming in the technological pipes strong gypsum depositions and low specific productivity of the equipment for sediment dewatering are most significant of them. Characteristic of aggressive industrial sewage, formed at pickling of ferrous metals presented. Methods of elimination of drawbacks of industrial sewage neutralization by lime considered, including stabilization of neutralized industrial sewage and control of properties of the sediment formed. It was noted, that stability of the circulating water can be provided by accelerating of crystallization of the forming gypsum sediments by introducing in it fine priming powder and heating the neutralized water up to 65-70 °С followed by thermal softening of a part of circulating water, removed out of the circulating system. It was shown, that the heating of the water and the ongoing changes of the composition and properties of the sediment result in decrease of filtration resistance 2-3 folds, increase of deposition speed 3-4 folds and decrease the sediment volume 1.5-2 folds comparing with lime neutralization in cold water. Calculated dozes of lime at the heating were taken the same as at the regular lime neutralization. Elimination of the circulating water oversaturation by bi-water gypsum can be reached also by addition into the water of powder-like gypsum pulp - priming powder for microcrystals of the gypsum, followed by aeration during 30-40 min. This method was tested under industrial conditions. Technological properties of the forming sediment can be improved by sediment treatment by flocculants and preliminary heating of the neutralized water up to 65-70 °С. Control of technological properties of the sediment is done by addition of flocculants and heating of the neutralized water. Recommendations for improving operation of the neutralization facilities presented with indicating particular technological parameters of the equipment operation for sewage and sediment treatment. 

THE FORMATION OF DUNE DECOMPOSITION CHIMNEYS IN A MIGRATING COASTAL DUNE, INDIANA DUNES NATIONAL LAKESHORE

2016 ◽  
Author(s):  
Erin P. Argyilan ◽  
◽  
Mark P.S. Krekeler ◽  
Peter G. Avis ◽  
Todd A. Thompson ◽  
...  
Keyword(s):  
Coastal Dune ◽  
Indiana Dunes ◽  
Indiana Dunes National Lakeshore

MODERN GEOLOGIC CHARACTERIZATION OF A GULF OF MEXICO COASTAL DUNE LAKE

2017 ◽  
Author(s):  
Samuel T. Barber ◽  
◽  
Kaylyn C. Bellais ◽  
D. Alex Beebe ◽  
M.W. Clark
Keyword(s):  
Gulf Of Mexico ◽  
Coastal Dune

QGG J. HOOVER MACKIN AWARD: CHANNEL MORPHOLOGIC CHANGE ASSOCIATED WITH INVASIVE VEGETATION REMOVAL

2020 ◽  
Author(s):  
Celeste Wieting ◽  
◽  
Sara L. Rathburn ◽  
Jonathan M. Friedman
Keyword(s):  
Morphologic Change ◽  
Vegetation Removal
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