A compendium of Coastal Dune Lakes in Northwest Florida

2018 ◽  
Vol 23 (2) ◽  
pp. 385-416
Author(s):  
Nichelle M. VanTassel ◽  
Alexis M. Janosik
Keyword(s):  
Coastal Dune ◽  
Dune Lakes ◽  
Northwest Florida

Reconnaissance limnology of some coastal dune lakes of Cape York Peninsula, Queensland

1986 ◽  
Vol 37 (2) ◽  
pp. 167 ◽  
Author(s):  
BV Timms
Keyword(s):  
Coastal Dune ◽  
Tropical Species ◽  
Eastern Australia ◽  
Dune Lakes ◽  
Littoral Invertebrates ◽  
Cape York ◽  
Almost All

All nine lakes studied are small (mean area 32 ha), shallow (< 5 m deep), watertable exposures in thin dunes overlying laterite or sandstone. Their water is fresh (mean salinity 52 mg I-1), acid (mean pH 4.8) and dominated by Na+ and Cl-, but with appreciable amounts of Ca2+, Mg2+ and HCO3-. Almost all macrophytes, littoral invertebrates, fish and limnetic zooplankters are common tropical species. A few species are shared with dune lakes in southern Australia and even fewer are endemic. Hence, these tropical dune lakes are different from those in temperate and subtropical eastern Australia.

Optical properties, Nutrients and Phytoplankton of freshwater Coastal Dune Lakes in South-east Queensland

1988 ◽  
Vol 39 (6) ◽  
pp. 805 ◽  
Author(s):  
LC Bowling
Keyword(s):  
Optical Properties ◽  
Chlorophyll A ◽  
Coastal Dune ◽  
Photosynthetically Available Radiation ◽  
Attenuation Coefficients ◽  
Low Concentrations ◽  
Dune Lakes ◽  
Lake Waters

Gilvin was the main attenuator of photosynthetically available radiation (PAR) in 26 freshwater coastal dune lakes, despite most being only slightly humic (range 0.000-27.866 m-1, median = 1.088 m-1). Most were also non-turbid [range 0.27-3.00 nephelometric turbidity units (NTU), median = 0.77 NTU] and had low concentrations of chlorophyll a (range 0.212-15.869 �g I-1, median = 3.285 �g I-1). Accordingly there was only slight to moderate attenuation of PAR in most lakes, the majority having mean downwelling vertical attenuation coefficients of less than 1.0 m-1. However, Secchi depths indicate that the lake waters were more transparent during this study than previously reported in the literature. The lakes were typically oligotrophic, acidic, and of low conductivity. Desmids and Peridinium spp. dominated the phytoplankton, although Dynobryon cylindricum Imhof. and various Chlorococcales were also common.

Coastal Dune Lakes as Exemplified from King Island, Tasmania

1957 ◽  
Vol 123 (1) ◽  
pp. 59 ◽  
Author(s):  
J. N. Jennings
Keyword(s):  
Coastal Dune ◽  
Dune Lakes

scholarly journals Lake or Estuary? Sedimentary and Benthic Foraminiferal Characterization of a Gulf of Mexico Coastal Dune Lake

2020 ◽  
Vol 31 ◽  
pp. SC46-SC52
Author(s):  
Kaylyn C. Bellais ◽  
Samuel T. Barber ◽  
Donald A. Beebe ◽  
Murlene W. Clark
Keyword(s):  
Gulf Of Mexico ◽  
Gulf Coast ◽  
Scientific Data ◽  
Depositional Environments ◽  
Coastal Dune ◽  
Coarse Grained ◽  
Mobile Bay ◽  
Fine Grained ◽  
Dune Lakes ◽  
Intermittent Connection

Coastal dune lakes are shallow estuaries located within dune environments that share a permanent or intermittent connection with the sea. Because coastal dune lakes are found in few locations worldwide (e.g. Australia, New Zealand, Florida, etc.) they represent unique environments worthy of protection. However; there is a distinct lack of scientific data related to the function and ecology of coastal dune lakes, especially in the Gulf of Mexico. Therefore, the purpose of this study was to characterize the sedimentology and foraminifera of a representative coastal dune lake in Walton County, FL (i.e. Eastern Lake) and determine whether it shares geologic similarities with nearby estuaries. Ten Ekman sediment grab samples were collected along a transect spanning the length of Eastern Lake. The samples were processed to determine sedimentary properties and foraminiferal assemblages. Results from the sedimentary and foraminiferal analyses reveal 3 distinct depositional environments including: (1) a coarse grained, moderately well sorted, organic poor, sandy beach facies with both agglutinated and calcareous foraminifera, (2) a fine grained, very poorly sorted, organic rich central mud basin facies with mostly calcareous foraminifera, and (3) a coarse grained, poorly sorted, organic rich sandy marsh delta facies dominated by agglutinated foraminifera. These environments and foraminiferal patterns are also found in much larger nearby estuaries including Choctawhatchee Bay, Pensacola Bay, and Mobile Bay. Our results therefore suggest that coastal dune lakes may serve as down-scaled micro-estuaries and are functionally related to larger estuaries of the Gulf Coast despite their size.

Limnological characteristics of two coastal Dune Lakes, Jervis Bay, South Eastern Australia

1993 ◽  
Vol 44 (3) ◽  
pp. 437 ◽  
Author(s):  
RH Norris ◽  
JL Moore ◽  
WA Maher ◽  
LP Wensing
Keyword(s):  
Oxygen Depletion ◽  
Coastal Dune ◽  
Organic Load ◽  
Physical Factors ◽  
Biological Interactions ◽  
Marine Aerosols ◽  
Low Salinity ◽  
Eastern Australia ◽  
Dune Lakes ◽  
Wind Mixing

Limnological features of two permanent, closed, coastal dune lakes that are separated by only about 400 m are reported. The depth of Lake Windermere fluctuated by about 7 m during this study (1982- 1988); however, fluctuations up to 15 m were observed between 1970 and 1988. Lake Windermere is exposed to wind mixing, is transparent and is usually mixed, or only weakly stratified. Lake McKenzie is semi-perched, darkly coloured and strongly stratified with an anoxic hypolimnion during summer. It is about one fifth of the surface area and half the depth of Lake Windermere and protected from wind mixing. Both lakes are acidic and have low salinity, and the dominant ions are sodium and chloride probably from precipitation of marine aerosols. Oxygen depletion in the hypolimnion of both lakes indicates a substantial organic load, the source of which is allochthonous material from the catchment rather than autochthonous material. Lake Windermere had higher densities of zooplankton (mostly Calamoecia tasmanica) than Lake McKenzie, but the latter lake had higher numbers of the predaceous Chaoborus sp. Lake McKenzie had higher invertebrate densities than Lake Windermere and these fluctuated widely between years, corresponding with variation in rainfall. Mayflies and chironomids were numerically dominant in Lake McKenzie, and caddisflies and chironomids were numerically dominant in Lake Windermere. Turtle and odonate predators were more common in Lake McKenzie than in Lake Windermere. It is postulated that biological interactions are more important in shaping the communities in Lake McKenzie and physical factors such as wave action are more important in Lake Windermere.

Study of coastal freshwater lakes in southern New South Wales

1997 ◽  
Vol 48 (3) ◽  
pp. 249 ◽  
Author(s):  
B. V. Timms
Keyword(s):  
Indicator Species ◽  
New South ◽  
New South Wales ◽  
Coastal Dunes ◽  
Coastal Dune ◽  
Freshwater Lakes ◽  
South Wales ◽  
Dune Lakes ◽  
Coastal Sand ◽  
Southern Species

There are few freshwater lakes associated with coastal dunes in southern New South Wales (NSW). Lake Nargal near Narooma, Bondi Lake near Bega, and a small lagoon near Pambula have little in common limnologically with coastal dune lakes of northern NSW and southern Queensland. They differ in mode of origin, are less dominated by NaCl, are less acidic, are more speciose, have few characteristic dune-lake indicator species, and moreover contain certain southern species. However, a re-examination of data for Lakes Windermere and McKenzie further north at Jervis Bay suggest that these are classic dune-contact lakes rather similar to those in northern NSW. Differences and similarities are largely influenced by the extent and therefore the hydrological influence of the contextural coastal sand mass and by biogeography.

Diet of the Fresh-Water Turtle Chelodina-Longicollis (Testudines, Chelidae) From the Coastal Dune Lakes of the Jervis Bay Territory

1986 ◽  
Vol 13 (2) ◽  
pp. 301 ◽  
Author(s):  
a Georges ◽  
RH Norris ◽  
L Wensing
Keyword(s):  
Geographic Variation ◽  
Fresh Water ◽  
Prey Species ◽  
Coastal Dune ◽  
Dune Lakes ◽  
Littoral Fauna ◽  
Chelodina Longicollis

Chelodina longicollis is an opportunistic carnivore that obtains its food from a wide variety of sourcesplankton, nekton, benthic macro-organisms, carrion, and terrestrial organisms that fall upon the water. Although there are some quantitative differences between the littoral components of the diet and the composition of the littoral fauna, these can be attributed to differences in accessibility or 'noticeability' among prey species. There is no evidence to suggest that C, longicollis is selective in what it eats, within the confines of carnivory. Comparison of the diet of C. longicollis with those of other sympatric chelids reveals considerable overlap; the relevance of this to geographic variation in abundance of the species is discussed.

A limnological survey of the freshwater coastal lakes of east Gippsland, Victoria

1973 ◽  
Vol 24 (1) ◽  
pp. 1 ◽  
Author(s):  
BV Timms
Keyword(s):  
Water Chemistry ◽  
Chloride Ions ◽  
Coastal Dune ◽  
Limited Data ◽  
Coastal Lakes ◽  
Bicarbonate Ions ◽  
Dune Lakes ◽  
Littoral Invertebrates ◽  
Physical And Chemical ◽  
Limnological Survey

Eleven lakes were examined in varying degrees of intensity. For the largest two, Lakes Elusive and Barracoota, information is presented on physiography, major physical and chemical features, macrophytes, zooplankton, littoral invertebrates, benthos, and fish. Limited data, mainly on water chemistry and zooplankton, are given for the remaining lakes. The lakes are divisible into three groups. The four floodplain lagoons contain alkaline water dominated by sodium and bicarbonate ions. Zooplankton in each consists of Boeckella minuta, Thermocyclops hyalinus, and Daphnia lumholtzi, as well as a variety of other entomostracans. The coastal dune lakes have acid water dominated by sodium and chloride ions and a restricted zooplankton of one to three species, including Calarnoecia tasmanica. Compared with coastal dune lakes of southern Queensland, these are heterogenous in mode of origin, water chemistry, and zooplankton. Despite some similarities with dune lakes, Lake Barracoota is basically different. Its physiography suggests a recent marine origin which is confirmed by the presence of two isopods and a polychaete with marine affinities.

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