Predicting Epilimnetic Phosphorus Concentrations Using an Improved Diatom-Based Transfer Function and Its Application to Lake Eutrophication Management

Bennion, H; Juggins, Steve; Anderson, N. J.

doi:10.1021/es9508030

Cited by 232 publications

(160 citation statements)

References 21 publications

(35 reference statements)

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“…Much published work has been focused on inland lakes (e.g. Fritz et al 1991;Bennion et al 1996;Bigler and Hall 2003) but there are relatively few equivalent datasets for coastal lake and estuarine environments. However, some inference models have been developed and applied (e.g.…”

Section: Introductionmentioning

confidence: 99%

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

Saunders

2010

J Paleolimnol

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To quantify the relationship between diatom species assemblages and the water chemistry of southeast Australian estuaries and coastal lakes, a new dataset of 81 modern diatom samples and water chemistry data was created. Three hundred and ninetynine species from 53 genera were identified in 36 samples from 32 coastal water bodies in eastern Tasmania and 45 samples from 13 coastal water bodies in southern Victoria. Multivariate statistical analyses revealed that the sampling sites were primarily distributed along salinity and nutrient gradients, and that salinity, nitrate ? nitrite, phosphate and turbidity explained independent portions of variance in the diatom data. Species salinity optima and tolerances were determined and a diatom-salinity inference model (WAinv r 2 = 0.72, r 2 jack = 0.58, RMSEP = 0.09 log ppt) was developed. This new information on diatom species' salinity preferences provides a useful tool for quantitatively reconstructing salinity changes over time from diatom microfossils preserved in the sediments of a range of estuaries and coastal lakes in southeast Australia. This is valuable for studies investigating long-term human impacts and climate change in the region.

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Section: Introductionmentioning

confidence: 99%

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

Saunders

2010

J Paleolimnol

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“…As a result of the paucity of background data, it is often impossible to estimate the degree and rate of change in the chemical and biological structure of waterbodies and to distinguish between natural changes and those caused by anthropogenic stresses. However, recent advances in paleolimnological techniques, especially formation of biological-based inference models, have resulted in the ability to reconstruct historical lake water conditions with a high degree of resolution (Bennion et al 1996).…”

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confidence: 99%

Century changes in Connecticut, U.S.A., lakes as inferred from siliceous algal remains and their relationships to land‐use change

Siver

Lott

Cash

et al. 1999

Limnology & Oceanography

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Scaled chrysophytes and planktonic diatoms are used to infer changes in lake water pH, specific conductivity, trophic score, and total nitrogen in 23 Connecticut waterbodies over the last 100 yr, and the changes are correlated with quantified changes in land use in the surrounding watersheds. In general, there was good agreement between the changes inferred from both organismal groups in this suite of lakes. Significant correlations were observed between chemical conditions inferred from organisms in surface sediments and present-day land uses, especially the percentages of the watersheds that are forest or residential land cover types. Approximately 20% of the waterbodies have significantly increased in pH since 1890, and none of the lakes have significantly declined in pH despite the fact that this region receives significant amounts of acidic deposition. These findings support previous work, indicating that the pH of Connecticut lakes has not declined over the recent past. One fourth of the lakes have significantly increased in specific conductivity, especially those situated in watersheds that have become highly residential in nature. Inferred specific conductivity has more than doubled in six of the lakes during the last century. Six of the lakes have become significantly more eutrophic, while only one lake has become more oligotrophic since 1890. The majority of the lakes situated in watersheds that have remained over ϳ80% forested have not significantly changed, whereas those that have become over ϳ25% residential have experienced the greatest amount of change. The potential influences of watershed-based alkalinity generation, winter road salt use, and implications of these findings in lake management are discussed.

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“…As the diatom community changed, diversity, recorded by Hill's N2 diversity index, declined, indicating a less diverse diatom community post-1978. This, too, could be an indication of the slow eutrophication of the lake (Bennion et al 1996(Bennion et al , 2000.…”

Section: Discussionmentioning

confidence: 99%

Combining limnology and palaeolimnology to investigate recent regime shifts in a shallow, eutrophic lake

et al. 2014

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In this study, we demonstrate that an integrated approach, combining palaeolimnological records and limnological monitoring data, can increase our understanding of changing ecological patterns and processes in shallow lakes. We focused on recent regime shifts in shallow Lake Krankesjön, southern Sweden, including the collapse of the clearwater state in 1975 and its subsequent recovery in the late 1980s. We used diatom, hydrocarbon and biogenic silica sediment records, in concert with limnological data sets on nutrient concentrations, water clarity, chlorophyll-a and water depth, to investigate the shifts. The shift from clear to turbid conditions was abrupt and occurred over 1 to 2 years, whereas recovery of the clear-water state was more gradual, taking 4-5 years. In 1978, shortly after the first regime shift in water clarity, the diatom community underwent a significant shift. It became less diverse, with decreased abundance of epiphytic and planktonic taxa. Despite rising phosphorus concentrations and lower abundance of submerged macrophytes, Lake Krankesjön has remained in the clear-water state over the past 20 years, although this state seems to be increasingly unstable and susceptible to collapse. The complex reactions of the entire lake ecosystem to major changes in lake-water clarity, as shown by the Paleolimnol (2014) 51:437-448 DOI 10.1007 palaeolimnological variables investigated in this study, emphasize the importance of careful lake and catchment management if a stable, clear-water state is desired.

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Predicting Epilimnetic Phosphorus Concentrations Using an Improved Diatom-Based Transfer Function and Its Application to Lake Eutrophication Management

Cited by 232 publications

References 21 publications

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

A diatom dataset and diatom-salinity inference model for southeast Australian estuaries and coastal lakes

Century changes in Connecticut, U.S.A., lakes as inferred from siliceous algal remains and their relationships to land‐use change

Combining limnology and palaeolimnology to investigate recent regime shifts in a shallow, eutrophic lake

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