Estimation of reference conditions for phytoplankton in a naturally eutrophic shallow lake

Lepistö, Liisa; Kauppila, Pirkko; Rapala, Jarkko; Pekkarinen, Mauri; Sammalkorpi, Ilkka; Villa, Leena

doi:10.1007/s10750-006-0032-4

Cited by 11 publications

(2 citation statements)

References 30 publications

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“…Planktic nostocalean cyanobacteria have the ability to produce most types of cyanotoxins [37] and are frequently referred to as successful invaders [6]. Dolichospermum lemmermannii, the dominant nostocalean species in both lakes in terms of biomass, is known for its ability to produce various toxins (e.g., microcystins, anatoxins, saxitoxin) [38]. Also, D. lemmermannii has widened its geographic distribution across temperate lakes.…”

Section: Discussionmentioning

confidence: 99%

Ecological Connectivity in Two Ancient Lakes: Impact Upon Planktonic Cyanobacteria and Water Quality

Katsiapi

Genitsaris

Stefanidou

et al. 2019

Water

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The ancient lakes Mikri Prespa and Megali Prespa are located in SE Europe at the transnational triangle and are globally recognized for their ecological significance. They host hundreds of flora and fauna species, and numerous types of habitat of conservational interest. They also provide a variety of ecosystem services. Over the last few decades, the two lakes have been interconnected through a surface water channel. In an attempt to explore whether such a management practice might alter the ecological properties of the two lakes, we investigated a series of community metrics for phytoplankton by emphasizing cyanobacteria. Our results demonstrate that the cyanobacterial metacommunity structure was affected by directional hydrological connectivity and high dispersal rates, and to a lesser extent, by cyanobacterial species sorting. Cyanobacterial alpha diversity was twofold in the shallow upstream Lake Mikri Prespa (Simpson index average value: 0.70) in comparison to downstream Lake Megali Prespa (Simpson index average value: 0.37). The cyanobacterial assemblage of the latter was only a strict subset of that in Mikri Prespa. Similarly, beta diversity components clearly showed a homogenization of cyanobacteria, supporting the hypothesis that water flow enhances fluvial translocation of potentially toxic and bloom-forming cyanobacteria. Degrading of the water quality in the Lake Megali Prespa in anticipation of improving that of the Lake Mikri Prespa is an issue of great concern for the Prespa lakes' protection and conservation.

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Section: Discussionmentioning

confidence: 99%

Ecological Connectivity in Two Ancient Lakes: Impact Upon Planktonic Cyanobacteria and Water Quality

Katsiapi

Genitsaris

Stefanidou

et al. 2019

Water

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“…Especially, Aulacoseira granulata (Ehrenberg) Simonsen, a globally distributed species within its genus, displays adaptability and tolerance to a broad spectrum of environmental conditions (Wang et al, 2015). Blooms of A. granulata are typically associated with eutrophication (Gomes, 2000;Kamenir et al, 2004;Lepistö et al, 2006), increased turbidity and nutrient availability (Simiyu and Kurmayer, 2022). The morphological variability of this taxon has also been analysed to investigate its relationship with freshwater environmental features, such as the species valve diameter and mantle height positively correlating with more than one nutrient component (Gómez et al, 1995;Mohanty et al, 2022;O'Farrell et al, 2001;Poulickova, 2003;Turkia and Lepistö, 1999;Wang et al, 2015), or mantle height/valve diameter (H/D) and surface area/volume (SA/V) ratios negatively related to lake water-level and mixing (O'Farrell et al, 2001;Wang et al, 2009Wang et al, , 2015.…”

Section: Introductionmentioning

confidence: 99%

Diatom-based indications of an environmental regime shift and droughts associated with seasonal monsoons during the Holocene in Biển Hồ maar lake, the Central Highlands, Vietnam

Đào-Trung,

Fukumoto,

Nguyễn-Thùy

et al. 2024

The Holocene

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The interactions of the different monsoon systems across Southeast Asia create extreme climate phenomena. Central Vietnam, located near the centre of this transitional region, has encountered numerous effects. As a result, its sediments from lakes or speleothems are valuable archives for interpreting past climate variability. However, there is still a lack of high-resolution paleoenvironmental and palaeoclimatic reconstructions during the Holocene in Vietnam. Our study presents a paleoenvironmental diatom-based record of sediment cores collected from Biển Hồ maar lake (14°03′N, 108°00′E) in the Central Highlands of Vietnam covering nearly the entire Holocene. Based on changes in diatom assemblages in the sediment sequence, we identified two periods of the Early Holocene (~11,700–7800 cal BP) and the Mid- to Late-Holocene (~7800–360 cal BP), which mark a remarkable shift in the environment around Biển Hồ. Alternations of key diatom species during the Early Holocene indicate intensity variations between water-mixing and thermal stratification mechanisms in meso-eutrophic conditions. During the Mid- to Late-Holocene, the complete dominance of Aulacoseira granulata var. granulata implies year-round destratification and intense mixing of the lake water column in a permanently eutrophic environment. Its morphological variability reveals intervals of dry environmental conditions driven by pronounced droughts across the Asian continent.

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Phytoplankton in Alte Donau: Response to Trophic Change from Hypertrophic to Mesotrophic Over 22 Years

Teubner

Kabas²,

Teubner

2018

The Alte Donau: Successful Restoration and Sustainable Management

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Estimation of reference conditions for phytoplankton in a naturally eutrophic shallow lake

Cited by 11 publications

References 30 publications

Ecological Connectivity in Two Ancient Lakes: Impact Upon Planktonic Cyanobacteria and Water Quality

Ecological Connectivity in Two Ancient Lakes: Impact Upon Planktonic Cyanobacteria and Water Quality

Diatom-based indications of an environmental regime shift and droughts associated with seasonal monsoons during the Holocene in Biển Hồ maar lake, the Central Highlands, Vietnam

Phytoplankton in Alte Donau: Response to Trophic Change from Hypertrophic to Mesotrophic Over 22 Years

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