The Dune Lakes in central coastal California: Why are they dry?

2019 ◽  
Vol 24 (2) ◽  
pp. 190-194 ◽  
Author(s):  
Christopher P. Kofron
Keyword(s):  
Dune Lakes

Water Quality, Phosphorus Budgets and Management of Dune Lakes Used for Recreation in Queensland (Australia)

1989 ◽  
Vol 21 (2) ◽  
pp. 111-118 ◽  
Author(s):  
A. H. Arthington ◽  
G. J. Miller ◽  
P. M. Outridge
Keyword(s):  
Water Quality ◽  
Total Phosphorus ◽  
Trophic Status ◽  
Compartment Model ◽  
Phosphorus Concentration ◽  
Lake Depth ◽  
Total Phosphorus Concentration ◽  
Dune Lakes ◽  
Phosphorus Budgets ◽  
Recreational Use

The water quality and trophic status of two Queensland dune lakes are compared in the context of assessing the impacts of recreational use and other human activities. Lake Freshwater, Cooloola, has a mean total phosphorus concentration of 12.1 ± 3.3 µg l−1 and is approaching mesotrophic status, whereas Blue Lagoon, Moreton Island, is oligotrophic. Natural loadings of total phosphorus, ranging from 0.2 to 0.35 g m−2 yr−1, are consistent with the progression of Lake Freshwater from oligotrophic to mesotrophic status. The phosphorus loadings predicted by Vollenweider's (1976) one-compartment model, for two values of mean lake depth, also indicate that Lake Freshwater is tending towards eutrophic conditions. The management implications of phosphorus loadings and budgets are discussed.

A Survey of the Western Coastal Dune Lakes of the North Island, New Zealand

1953 ◽  
Vol 4 (2) ◽  
pp. 343 ◽  
Author(s):  
BT Cunningham ◽  
NT Moar ◽  
AW Torrie ◽  
PJ Parr
Keyword(s):  
Thermal Stratification ◽  
Bottom Fauna ◽  
Bathymetric Survey ◽  
Qualitative And Quantitative ◽  
Contour Maps ◽  
The North ◽  
Biological Survey ◽  
Submerged Aquatic Plants ◽  
Dune Lakes ◽  
Game Fish

A biological survey of 26 lakes of the western dune series of the North Island was made during the summers of 1949 and 1950. At each lake a shore-line and bathymetric survey was made and contour maps have been prepared. Temperature and transparency measurements were also taken. Analysis for essential chemicals, particularly oxygen, was made. Thermal stratification and deoxygenation of the hypolimnion was found in five lakes. Details of emergent and submerged aquatic plants have been included on the contour maps. Qualitative and quantitative samples were taken of plankton and bottom fauna. The present stocks of fish were examined and waterfowl were noted. All the lakes with an outlet supported eels. The Northland series contained no stocks of game fish, but in the Wellington series limited stocks of perch and trout occurred.

scholarly journals Within-lake detection of the effects of tourist activities in the littoral zone of oligotrophic dune lakes

2005 ◽  
Vol 8 (2) ◽  
pp. 159-173 ◽  
Author(s):  
Wade L. Hadwen ◽  
Stuart E. Bunn ◽  
Angela H. Arthington ◽  
Thorsten D. Mosisch
Keyword(s):  
Littoral Zone ◽  
Dune Lakes

scholarly journals Tourists increase the contribution of autochthonous carbon to littoral zone food webs in oligotrophic dune lakes

2004 ◽  
Vol 55 (7) ◽  
pp. 701 ◽  
Author(s):  
Wade L. Hadwen ◽  
Stuart E. Bunn
Keyword(s):  
Food Webs ◽  
Littoral Zone ◽  
Algal Biomass ◽  
Carbon Sources ◽  
Nutrient Concentrations ◽  
Relative Importance ◽  
Nutrient Inputs ◽  
Oligotrophic Lakes ◽  
Dune Lakes ◽  
The Impact

Tourists can adversely influence the ecology of oligotrophic lakes by increasing algal production via direct nutrient inputs and/or re-suspension of sediments. To assess the influence of tourists on food web dynamics, we used the natural abundance of stable isotopes of carbon and nitrogen to calculate the relative importance of autochthonous and allochthonous carbon sources to littoral zone food webs across five variously visited perched dune lakes on Fraser Island, Australia. The relative importance of autochthonous (phytoplankton and periphyton) carbon to littoral zone consumers was highly variable across taxa and lakes. Despite the potential influence of algal biomass, ambient nutrient concentrations and tannin concentrations on the contribution of autochthonous carbon to littoral zone food webs, none of these variables correlated to the per cent contribution of autochthonous carbon to consumer diets. Instead, autochthonous sources of carbon contributed more to the diets of aquatic consumers in heavily visited lakes than in less visited lakes, suggesting that tourist activities might drive these systems towards an increased reliance on autochthonous carbon. The assessment of the contribution of autochthonous carbon to littoral zone food webs may represent a more robust indicator of the impact of tourists in oligotrophic lakes than standard measures of nutrient concentrations and/or algal biomass.

Managing land-use effects on Northland dune lakes: lessons from the past

2018 ◽  
Vol 52 (3) ◽  
pp. 409-429 ◽  
Author(s):  
Tom Stephens ◽  
Paul Augustinus ◽  
Brett Rip ◽  
Patricia Gadd ◽  
Atun Zawadski
Keyword(s):  
Land Use ◽  
The Past ◽  
Dune Lakes ◽  
Land Use Effects

scholarly journals Composición florística y diversidad de la vegetación de humedales en los lagos interdunarios de Veracruz

2019 ◽  
Vol 85 ◽  
pp. 89
Author(s):  
Luis Alberto Peralta Peláez ◽  
Patricia Moreno Casasola
Keyword(s):  
Cynodon Dactylon ◽  
Environmental Parameters ◽  
Grass Species ◽  
Ceratophyllum Demersum ◽  
Sagittaria Lancifolia ◽  
Composition And Structure ◽  
Dune Lakes ◽  
Management Plans ◽  
Surrounding Areas ◽  
Grazing Lands

Dune lakes of the coast of Veracruz, Mexico, are shallow freshwater lakes with suitable conditions for the establishment of herbaceous and arboreal wetlands. Most of the vegetation of the surrounding dunes has been transformed into pastures for grazing lands and sugar cane plantations. The objective of this paper is to describe and compare structure, composition and diversity of the wetland vegetation of 15 dune lakes in the rural area. Environmental parameters (pH, salinity, size, depth and number of dry months) were taken into account. Plant diversity of these lakes comprise 46 families (27 strictly aquatic) and 82 species, among them <em>Sagittaria lancifolia, Pontederia sagittata, Ceratophyllum demersum.</em> Species richness fl uctuated between 5 and 33 species. The classifi cation resulted in nine fl oristic wetland groups, three of them with grass species from the surrounding areas <em>(Cynodon dactylon, Echinochloa pyramidalis).</em> Ordination separated lakes based on pH and number of dry months. Management plans should be developed together with the owners to maintain both the use of these lakes and the composition and structure of their wetlands.

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.

The Decline of Oregon's Rare Sand Dune Lakes

2019 ◽  
Vol 107 (6) ◽  
pp. 356
Author(s):  
Douglas Larson
Keyword(s):  
Sand Dune ◽  
Dune Lakes
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