Acid Lakes from Natural and Anthropogenic Causes

Patrick, Ruth; Binetti, Victoria P.; Halterman, Steven G.

doi:10.1126/science.211.4481.446

Cited by 41 publications

(16 citation statements)

References 3 publications

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“…The radiation-absorbing components of DOM, known as chromophoric dissolved organic matter (CDOM), are the primary attenuator of ultraviolet (UV) radiation in temperate lakes in the northern and southern hemispheres Hargreaves, 2003). Allochthonous DOM may confer acidity to a system over time, because of its organic acid components (Patrick et al, 1981). Additionally, DOM can stimulate planktonic food webs (De Lange et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Beneficial and detrimental interactive effects of dissolved organic matter and ultraviolet radiation on Zooplankton in a transparent lake

et al. 2006

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While changes in dissolved organic matter (DOM) concentrations are expected to affect zooplankton species through attenuation of potentially damaging ultraviolet (UV) radiation, generation of potentially beneficial or harmful photoproducts, pH alteration, and microbial food web stimulation, the combined effects of such changes on zooplankton community structure have not been studied previously. Our purpose was to determine how an increase in allochthonous DOM and associated changes in pH in an initially transparent lake may affect zooplankton community structure, and how exposure to solar UV may alter these DOM and pH effects. We ran microcosm experiments manipulating UV, DOM, and pH near the surface of Lake Giles in northeastern Pennsylvania. We found that when DOM was added in the presence of ambient UV, Daphnia and copepod UV-mortality was reduced by approximately three and two times compared to UV exposure without extra DOM. When DOM was added in the absence of UV, adult Daphnia and copepods were reduced compared to no DOM addition in the absence of UV. Daphnia and cyclopoid egg production and rotifer abundance were generally higher in the presence of DOM, regardless of UV treatment. The lower abundance yet high egg production in the presence of DOM and absence of UV may be explained by higher abundance of egg-bearing adults compared to non-egg-bearers. We conclude that allochthonous DOM benefits some zooplankton in a high-UV environment, but may be detrimental under low-UV conditions. Overall, Daphnia abundance and egg production were higher than that of calanoid copepods in the DOM additions, indicating that in some lakes an increase in allochthonous DOM may lead to a zooplankton community shift favoring Daphnia over calanoid copepods.

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Section: Introductionmentioning

confidence: 99%

Beneficial and detrimental interactive effects of dissolved organic matter and ultraviolet radiation on Zooplankton in a transparent lake

et al. 2006

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“…Patrick has maintained a balance between her basic research interests in diatom systematics and ecology, and applied research interests in water quality and water pollution biology. She has exhibited a continued dedication to pollution control in aquatic systems, pioneering the use of diatoms as indicators of conditions in streams (Patrick 1948), and using aquatic organisms as an aid for solving waste disposal problems (Patrick 1950 recently, Dr. Patrick has conducted research on acid precipitation (Patrick et al 1981).…”

Section: Walter Dodds Kansas State University and Louis Kaplan Philmentioning

confidence: 99%

1996 Aslo Awards

1996

ASLO Bulletin

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“…Acidification of freshwater lakes in North America was described about a decade after it was described in Scandinavia. During the 1960's and 1970's, the average smokestack of coal-burning electrical utilities increased from less than 100 m to over 200 m in height (Patrick et al 1981). But during the 1970's acidification was described in the middle and southern United States (Weiss et at.…”

Section: Atmospheric Transportmentioning

confidence: 99%

“…These lakes can endure lower pH levels without problem (Patrick et al 1981). Not all lakes are equally vulnerable.…”

Section: Acid Rainmentioning

confidence: 99%

Patterns of Life

Mielke¹

1989

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and the skilled people at Unwin Hyman were steadfast and helpful at every point in the writing and publishing craft. To all the above people my sincerest thanks. I profited from their interest and assistance and the book has been greatly improved and enriched as a result of their efforts and helpful advice. Whatever errors and deficiencies that remain are not theirs, but mine.I wish to dedicate this book to my students who nurtured thinking about patterns of life and to my daughter Beverly Ann who is a constant inspiration and motivates thoughts about now and the future.

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Acid Lakes from Natural and Anthropogenic Causes

Cited by 41 publications

References 3 publications

Beneficial and detrimental interactive effects of dissolved organic matter and ultraviolet radiation on Zooplankton in a transparent lake

Beneficial and detrimental interactive effects of dissolved organic matter and ultraviolet radiation on Zooplankton in a transparent lake

1996 Aslo Awards

Patterns of Life

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