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  • 1
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    NGS barcoding reveals high resistance of a hyperdiverse chironomid (Diptera) swamp fauna against invasion from adjacent freshwater reservoirs (2021)
    BioMed Central
    In:  http://aquaticcommons.org/id/eprint/25902 | 20794 | 2018-09-26 06:38:40 | 25902 | Department of Biological Sciences, National University of Singapore
    Details
    Publication Date: 2021-07-16
    Description: Background. Macroinvertebrates such as non-biting midges (Chironomidae: Diptera) are important components of freshwater ecosystems. However, they are often neglected in biodiversity and conservation research because invertebrate species richness is difficult and expensive to quantify with traditional methods. We here demonstrate that Next Generation Sequencing barcodes (“NGS barcodes”) can provide relief because they allow for fast and large-scale species-level sorting of large samples at low cost. Results. We used NGS barcoding to investigate the midge fauna of Singapore’s swamp forest remnant (Nee Soon Swamp Forest). Based on 〉 14.000 barcoded specimens, we find that the swamp forest maintains an exceptionally rich fauna composed of an observed number of 289 species (estimated 336 species) in a very small area (90 ha). We furthermore barcoded the chironomids from three surrounding reservoirs that are located in close proximity. Although the swamp forest remnant is much smaller than the combined size of the freshwater reservoirs in the study (90 ha vs. 〉 450 ha), the latter only contains 33 (estimated 61) species. We show that the resistance of the swamp forest species assemblage is high because only 8 of the 314 species are shared despite the close proximity. Moreover, shared species are not very abundant (3% of all specimens). A redundancy analysis revealed that ~ 21% of the compositional variance of midge communities within the swamp forest was explained by a range of variables with conductivity, stream order, stream width, temperature, latitude (flow direction), and year being significant factors influencing community structure. An LME analysis demonstrates that the total species richness decreased with increasing conductivity. Conclusion. Our study demonstrates that midge diversity of a swamp forest can be so high that it questions global species diversity estimates for Chironomidae, which are an important component of many freshwater ecosystems. We furthermore demonstrate that small and natural habitat remnants can have high species turnover and can be very resistant to the invasion of species from neighboring reservoirs. Lastly, the study shows how NGS barcodes can be used to integrate specimen- and species-rich invertebrate taxa in biodiversity and conservation research.
    Keywords: Ecology ; Environment ; Limnology
    Repository Name: AquaDocs
    Type: article , TRUE
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  • 2
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    Evaluation of the quantity and quality of the water resources of Volusia County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1851 | 3 | 2011-09-29 19:59:15 | 1851 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: This report amplifies and refines some of the data alreadyissued covering the water resources of Volusia County, which were published asReport of Investigations No. 21. The work in the report was accomplished as acooperative program between the Department of Natural Resources, the U. S.Geological Survey and the Board of County Commissioners of Volusia County.Volusia County is almost totally dependent upon the water which falls upon thecounty and has a recharge area contained along the western portion and thecentral portions of the county. Excellent water is produced in the areal rechargeand it is anticipated that this data will expand the existing knowledge of thewater resources to permit the development of a great capacity for existingutilities and to offset and solve some of the problems now in the area. (PDF has 71 pages.)
    Keywords: Management ; Limnology ; Volusia County ; Florida ; water quality
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    Reconnaissance of the geology and ground-water resources of Columbia County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1859 | 3 | 2011-09-29 19:57:47 | 1859 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: The Floridan aquifer was found to be principal source of groundwater in the area, containing artesian water in the northern part ofColumbia County, and being recharged in the southern part of thecounty. A few wells in the northern part of the county tap waterpresent in sediments that lie above the Floridan aquifer. Theseshallow waters are generally high in iron and tannic acid. Thedetails on the geology and hydrology necessary to conserve andutilize the water available to the residents of Columbia County arepresented in this study.(PDF contains 86 pages)
    Keywords: Limnology ; Earth Sciences ; Columbia County ; ground water ; water quality Florida
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    Ground-water resources of Collier County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1863 | 3 | 2011-09-29 19:57:20 | 1863 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: The Biscayne Aquifer is the principal source of water for the heavilypopulated area in the vicinity of West Palm Beach and Miami. Thepublication of this data is timely and will assist in the intelligent developmentof the water resources of the area.The report recognizes two major aquifers as the source of groundwater in Collier County. The lower aquifer is highly mineralized, butcontains usable water, and the more shallow aquifer is the source oflarge supplies, which are utilized by municipalities and domestic users.Adequate supplies of fresh water are present in the Naples area and byproper planning, these can be developed in an orderly manner and saltwater encroachment can be prevented.(PDF has 99 pages)
    Keywords: Management ; Limnology ; Collier county ; aquifers ; salt water intrusion ; Florida ; water use ; water supply
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Appraisal of water resources in the east central Florida region (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1865 | 3 | 2011-09-29 19:57:25 | 1865 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: The rapidly expanding population and economic growth in the sevencounties of the East Central Florida Regional Planning Council as shown inFigure 1, herein called the East Central Florida Region or the Region, hasresulted in increasing demands on its water resources. Although there isabundant water in the Region as a whole, the water in some areas of the Regionis of unacceptable quality for most uses. As the population increases the demandfor water will become much greater and the available supply may be reduced bypollution and increased drainage necessitated by urbanization and other landdevelopment- Ground-water supplies can be increased by capturing and storingwater underground that now drains to the sea or evaporates from swamp areas.Research is needed, however, to develop artificial-recharge methods that arefeasible and which will preserve or improve the quality of water in the aquifer.(PDF contains 57 pages)
    Keywords: Management ; Limnology ; Earth Sciences ; water resources ; ground water ; water supply ; Florida ; East Central Florida Region
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    Biscayne aquifer in Dade and Broward Counties, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1862 | 3 | 2011-09-29 19:57:16 | 1862 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: The Biscayne Aquifer is the principal source of water for the heavilypopulated area in the vicinity of West Palm Beach and Miami. Thepublication of this data is timely and will assist in the intelligent developmentof the water resources of the area.(PDF has 64 pages)
    Keywords: Management ; Limnology ; Biscayne aquifer ; Dade County ; Broward County ; Miami ; West Palm Beach ; Florida ; water use ; water supply
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    Ground-water resources of the Oakland Park area of eastern Broward County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1864 | 3 | 2011-09-29 19:57:23 | 1864 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: The Oakland Park area obtains its water from the Biscayne aquifer,S composed of very permeable and porous, sandy limestones. The per-3 meability of the aquifer increases with depth, and wells in the area〈\ generally obtain water at depths ranging from 60 to 80 feet, or betweenS 100 and 200 feet, depending on the quantity of water desired. Thedata presented in this paper can be used for further development ofwater and wise management of resources in the area. Large quantitiesS of ground water are still available at Oakland Park, if salt-water encroachmentcan be controlled. The data in this study provide the necessaryinformation to begin an effective water management program.(PDF has 49 pages)
    Keywords: Management ; Limnology ; Broward county ; aquifers ; salt water intrusion ; Florida ; water use ; water supply
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    Hydrology of western Collier County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1861 | 3 | 2011-09-29 19:57:54 | 1861 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: The U.S. GeologicalSurvey was requested in 1967 to locate areas that would most likelyyield the greatest quantities of the best quality water to satisfy theprojected municipal needs of western Collier County.The investigation included the following phases: (1) evaluationof existing data; (2) determination of the hydrologic and geologiccharacteristics of the subsurface materials; (3) collection of miscellaneousdischarge data in the inland canal complex and interpretationof the data; and (4) determination of the quality of water. (PDF has 40 pages)
    Keywords: Management ; Limnology ; Collier County ; Florida ; water supply
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    Seepage beneath Hoover Dike southern shore of Lake Okeechobee, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1867 | 3 | 2011-09-29 19:57:08 | 1867 | Florida Geological Survey
    Details
    Publication Date: 2021-07-10
    Description: Future water needs in southern Florida call for an increase in the storagecapacity of Lake Okeechobee. Seepage from the lake is expected to increase as aresult of raising the lake level. Data concerning the occurrence and amounts ofseepage are needed for the design and operation of flood-control works whichwill remove excess water from the rich agricultural lands along the southernshore. Intensive studies at five sites along the southern shore of LakeOkeechobee between the Caloosahatchee Canal and the St. Lucie Canal indicatethat seepage occurs chiefly through beds of shell and limestone which underliethe Hoover Dike at shallow depth. Seepage rates at the five sites range fromabout 0.1 to 0.9 cfs per mile per foot of head across the dike. Seepage beneaththe 50-mile length of dike should increase from about 22 to 50 cfs if the averagestage of the lake is raised from 14 to 16.5 feet. Seepage is greatest betweenMoore Haven and Clewiston, where deep borrows have been excavated on thelandward and lakeward sides of the dike. Most of the seepage from the lake canbe controlled by properly spaced toe ditches which would intercept the seepageand return it to the lake. (PDF contains 108 pages.)
    Keywords: Limnology ; Engineering ; Planning ; Lake Okeechobee ; Florida ; water seepage ; water supply
    Repository Name: AquaDocs
    Type: monograph
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  • 10
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    Water available in canals and shallow sediments in St. Lucie County, Florida (2021)
    Florida Geological Survey | Tallahassee, FL
    In:  http://aquaticcommons.org/id/eprint/1860 | 3 | 2011-09-29 19:57:51 | 1860 | Florida Geological Survey
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    Publication Date: 2021-07-10
    Description: The increased demand for water placed upon the water resources ofSt. Lucie County by the expanding agricultural use has brought abouthydrologic changes with ensuing problems. This report documents thesechanges and provides data which are necessary in solving the problems. (PDF has 59 pages)
    Keywords: Management ; Limnology ; Earth Sciences ; Agriculture ; St. Lucie County ; agriculture ; Florida ; water use
    Repository Name: AquaDocs
    Type: monograph
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