Wind Control on Water Quality in Shallow, Hypereutrophic Upper Klamath Lake, Oregon

Kann, Jacob; Welch, Eugene B.

doi:10.1080/07438140509354424

Cited by 37 publications

(38 citation statements)

References 20 publications

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“…Aphanizomenon and Anabaena are common members in cyanobacteria dominated phytoplankton communities in temperate regions and especially the Aphanizomenon species can form dense blooms under favorable conditions (e.g., Kann and Welch, 2005). Therefore, it is likely that CYN is more widely distributed than previously expected and that high concentrations may occur.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of the cyanobacterial toxin cylindrospermopsin in northeast Germany

Fastner

Rücker

Stüken

et al. 2007

Environmental Toxicology

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ABSTRACT:The frequent occurrence of the cyanobacterial toxin cylindrospermopsin (CYN) in the (sub)-tropics has been largely associated with cyanobacteria of the order Nostocales of tropical origin, in particular Cylindrospermopsis raciborskii. C. raciborskii is currently observed to spread northwards into temperate climatic zones. In addition, further cyanobacteria of the order Nostocales typically inhabiting water bodies in temperate regions are being identified as CYN-producers. Therefore, data on the distribution of CYN in temperate regions are necessary for a first assessment of potential risks due to CYN in water used for drinking and recreation. A total of 127 lakes situated in the north-eastern part of Germany were investigated in 2004 for the presence of the toxin CYN and the phytoplankton composition. The toxin could be detected in half of the lakes (n ¼ 63) and in half of 165 samples (n ¼ 88). Concentrations reached up to 73.2 g CYN/g DW. CYN thus proved more widely distributed than previously demonstrated. The analyses of phytoplankton data suggest Aphanizomenon sp. and Anabaena sp. as important CYN producers in Germany, and confirm recent findings of Aphanizomenon flos-aquae as CYN-producing species frequently inhabiting water bodies in temperate climatic regions. The data shown here suggest that CYN may be an important cyanobacterial toxin in German water bodies and that further data are needed to assess this. # 2007 Wiley Periodicals, Inc. Environ Toxicol 22: 26-32, 2007.

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Section: Introductionmentioning

confidence: 99%

Occurrence of the cyanobacterial toxin cylindrospermopsin in northeast Germany

Fastner

Rücker

Stüken

et al. 2007

Environmental Toxicology

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“…Water column stability was calculated as the median relative thermal resistance to mixing (RTRM) according to Jones and Welch (1990) and Kann and Welch (2005). To compare variables between sites and study years, nonparametric statistical analyses were performed using SigmaPlot, version 11 (Systat Software, Inc., San Jose, CA) because the data continued to deviate from normality and homoscedasticity after log transformation.…”

Section: Discussionmentioning

confidence: 99%

Microcystins, nutrient dynamics, and other environmental factors during blooms of non-microcystin-producingAphanizomenon flos-aquaein Upper Klamath Lake, Oregon, 2009

Eldridge

Wood

Echols

et al. 2013

Lake and Reservoir Management

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“…These are typically holomictic and the flora and fauna is limited by seasonal thermal stratification (Søndergaard et al, 2003;Brönmark and Hansson, 2005). In larger lakes, wind induced turbulence is an important feature mixing the water column (Berman and Shteinman, 1998;Kann and Welch, 2005). The shallowness of ponds can enable a much greater littoral zone to develop (the whole pond may be covered by aquatic macrophytes), whereas in larger and deeper lakes the hypolimnion (profundal) is typically free of aquatic macrophytes (Brönmark and Hansson, 2005).…”

Section: Pond or (Shallow) Lake: What's The Difference?mentioning

confidence: 99%

Ecological Drivers of Cladoceran Diversity in the Central European City (Łódź, Poland): Effects of Urbanisation and Size of the Waterbody

Pawlikiewicz¹,

Jurasz

2017

Annales Zoologici Fennici

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Ponds are common and abundant features in nearly all landscapes typical of European lowland landscapes yet research on freshwater biodiversity has traditionally focussed on larger waterbodies such as lakes and rivers. This has led to an increased need to understand and quantify the biodiversity associated with pond habitats to better inform the active conservation and management of these small waterbodies. This thesis examines the aquatic macroinvertebrate biodiversity (alpha, beta and gamma) and conservation value of 95 ponds in Leicestershire, UK, across a variety of urban and rural landscape types and at a range of spatial scales. In addition, the relative importance of local (physicochemical and biological) and spatial (connectivity) variables in structuring macroinvertebrate communities within ponds is investigated. At a regional scale, the greatest macroinvertebrate biodiversity and conservation value was recorded within meadow ponds compared to urban, agricultural and forest ponds. Spatially, ponds were highly physically and biologically heterogeneous. Temporally (seasonally), invertebrate communities were most dissimilar in meadow and agricultural ponds but assemblages were similar in urban and forest ponds. In urban landscapes, park ponds supported a greater diversity of invertebrates than 'other' urban or garden ponds and typically had a greater conservation value. Garden ponds were the most taxon poor of those investigated. Perennial floodplain meadow ponds supported a greater biodiversity of invertebrates compared to ephemeral meadow ponds although conservation value was similar. Despite regular inundation from the River Soar, ephemeral ponds supported distinct communities compared to perennial meadow ponds. Aquatic macrophytes supported a higher diversity of taxa than other pond mesohabitats across all landscapes studied. Physicochemical factors were identified to be the dominant influence on macroinvertebrate assemblages although, a combination of local and spatial factors best explained the variation in community composition at a regional scale and for meadow ponds. Spatial factors were not identified to significantly influence urban pond communities. This study highlights the ecological importance and conservation value of ponds in rural and anthropogenically disturbed landscapes. Recognition of the significant contribution of ponds to freshwater biodiversity at regional and landscape scales is important for future conservation of pond habitats and will help focus and direct conservation strategies to where they are needed most.iv

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Wind Control on Water Quality in Shallow, Hypereutrophic Upper Klamath Lake, Oregon

Cited by 37 publications

References 20 publications

Occurrence of the cyanobacterial toxin cylindrospermopsin in northeast Germany

Occurrence of the cyanobacterial toxin cylindrospermopsin in northeast Germany

Microcystins, nutrient dynamics, and other environmental factors during blooms of non-microcystin-producingAphanizomenon flos-aquaein Upper Klamath Lake, Oregon, 2009

Ecological Drivers of Cladoceran Diversity in the Central European City (Łódź, Poland): Effects of Urbanisation and Size of the Waterbody

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