Use of seasonal epilithic diatom assemblages to evaluate ecological status in Irish lakes

Kennedy, Bryan; Buckley, Yvonne M.

doi:10.1016/j.ecolind.2021.107853

Cited by 13 publications

(5 citation statements)

References 129 publications

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“…Numerous studies have shown that the relationships between different diatom indices and environmental variables vary widely from very weak to strong in different regions, which may be due to the different environmental factors or nutrient gradients used in the establishment of each index. The TDIL was highly correlated with TP in the relevant study of Irish lakes [40], the PDI also showed different correlations with TP concentrations in different areas in the evaluation of Lake Erie, and PDI scores were not significant in predicting TP in the western basin [17]. In this study, the low correlation between the TDIL, PDI, and TP may be due to the low concentration of TP in the Tangwang River Basin, which is much lower than the reference value of TP when the TDIL and PDI were established [41].…”

Section: Correlation Analysis Of Diatom Index and Environmental Factorsmentioning

confidence: 88%

Exploration of Applicability of Diatom Indices to Evaluate Water Ecosystem Quality in Tangwang River in Northeast China

Xue,

Wang,

Zhang

et al. 2023

Water

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The diatom index has been widely used in the evaluation of water ecological quality, but the applicability of the diatom index often varies in different study areas. The accuracy of the evaluation results depends on the applicability of the diatom index, especially when it is not applied to the place where it is created. In order to screen out the diatom index suitable for the evaluation of the water ecological quality of Tangwang River in northeast China, and to identify the factors affecting the accuracy of the diatom index, the community structure and water environment characteristics of 24 sample sites were investigated in Tangwang River in August 2018, and 18 diatom indices were calculated. The discriminative ability of diatom indices was analyzed using the box plot method, and the factors affecting the accuracy of the diatom index were identified by combining Pearson and Spearman correlation analyses. The results show that the discriminability of the Biological Diatom Index (BDI), Specific Pollution Sensitivity Index (IPS), Idse Leclercq (IDSE), Indice Diatomique Artois Picardie (IDAP), Diatom Eutrophication Pollution Index (EPI-D), Trophic Index (Rott TI), European Economic Community Index (CEE), and Watanabe Index (WAT) was the strongest, which could reasonably distinguish the reference group from the lightly damaged group. In general, the water ecological condition of Tangwang River Basin is good in the wet season, and the water ecological quality of about 80% of the sample sites was “moderate” or better. The main factors affecting the evaluation accuracy of the diatom index in Tangwang River Basin are the correlation strength between the diatom index and habitat quality, organic pollution, and nutrients. The coverage of diatom index species had no significant effect on the accuracy of evaluation. In order to reasonably evaluate the aquatic ecological status, it is recommended to use the diatom index, which has a good correlation with the environmental factors in the study area, or to establish a new diatom index based on the diatom community and environmental factors in the study area.

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Section: Correlation Analysis Of Diatom Index and Environmental Factorsmentioning

confidence: 88%

Exploration of Applicability of Diatom Indices to Evaluate Water Ecosystem Quality in Tangwang River in Northeast China

Xue,

Wang,

Zhang

et al. 2023

Water

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“…In Achnanthidium species identification and differentiation between populations using morphology can be challenging (Ector 2011;Kennedy & Buckley 2021). Due to this difficulty, the combination of morphologically similar species into groups is common for assessments of ecological status.…”

Section: Taxonomic Treatmentsmentioning

confidence: 99%

“…Taylor et al 2011; Van de Vijver et al 2011a;Van de Vijver & Kopalová 2014;Pinseel et al 2017;Krahn et al 2018;You et al 2019;Miao et al 2020). Despite this progress in understanding species diversity in Achnanthidium, there are still considerable problems with the identification of taxa, in particular of the small capitate species, including in well studied regions such as Europe (Gottschalk & Kahlert 2012 and references therein;Wetzel et al 2019;Kennedy & Buckley 2021). In the present study we therefore investigated the morphology of six Achnanthidium species with short, straight terminal raphe fissures from several locations in Europe, four of which are more widely distributed, using light (LM) and scanning electron microscopy (SEM) and elliptic Fourier shape analysis.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Morphology and Distribution of four Achnanthidium Kütz. Species (Bacillariophyta), Implications for Ecological Status Assessment, and Description of two New European Species

Jüttner

Hamilton

Wetzel

et al. 2022

Cryptogamie, Algologie

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“…[24][25][26][27] These attributes have fostered the broad use of diatoms in biomonitoring programs to track environmental changes in aquatic ecosystems. [28][29][30] Moreover, the composition of diatom communities in periphytic habitat and surface sediment captures an integrated signal of environmental changes over time and space within a lake, which serves to assess the vulnerability of shallow northern lakes to complex interactions among climate, hydrological processes, catchment features, and in-lake processes. 19,21,31 Old Crow Flats (OCF) is a 5600 km 2 permafrost landscape in northern Yukon recognized as a Ramsar Wetland of International Importance for ecosystem services provided to wildlife and the Vuntut Gwitchin First Nation (VGFN) (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…24 – 27 These attributes have fostered the broad use of diatoms in biomonitoring programs to track environmental changes in aquatic ecosystems. 28 – 30 Moreover, the composition of diatom communities in periphytic habitat and surface sediment captures an integrated signal of environmental changes over time and space within a lake, which serves to assess the vulnerability of shallow northern lakes to complex interactions among climate, hydrological processes, catchment features, and in-lake processes. 19 , 21 , 31 …”

Section: Introductionmentioning

confidence: 99%

Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada)

et al. 2023

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Shallow waterbodies are abundant in Arctic and subarctic landscapes where they provide productive wildlife habitat and hold cultural and socioeconomic importance for Indigenous communities. Their vulnerability to climate-driven hydrological and limnological changes enhances a need for long-term monitoring data capable of tracking aquatic ecosystem responses. Here, we evaluate biological and inferred physicochemical responses associated with a rise in rainfall-generated runoff and increasingly positive lake water balances in Old Crow Flats (OCF), a 5600 km2 thermokarst landscape in northern Yukon. This is achieved by analyzing periphytic diatom community composition in biofilms accrued on artificial-substrate samplers at 14 lakes collected mostly annually during 2008–2019 CE. Results reveal that diatom communities at 10 of the 14 lakes converged toward a composition typical of lakes with rainfall-dominated input waters. These include six of nine lakes that were not initially dominated by rainfall input. The shifts in diatom community composition infer rise of lake-water pH and ionic content, and they reveal that northern shallow lake ecosystems are responsive to climate-driven increases in rainfall. Based on data generated during the 12 -year-long monitoring period, we conclude that lakes located centrally within OCF are most vulnerable to rapid climate-driven hydroecological change due to flat terrain, larger lake surface area, and sparse terrestrial vegetation, which provide less resistance to lake expansion, shoreline erosion, and sudden drainage. This information assists the local Indigenous community and natural resource stewardship agencies to anticipate changes to traditional food sources and inform adaptation options.

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Use of seasonal epilithic diatom assemblages to evaluate ecological status in Irish lakes

Cited by 13 publications

References 129 publications

Exploration of Applicability of Diatom Indices to Evaluate Water Ecosystem Quality in Tangwang River in Northeast China

Exploration of Applicability of Diatom Indices to Evaluate Water Ecosystem Quality in Tangwang River in Northeast China

A Study of the Morphology and Distribution of four Achnanthidium Kütz. Species (Bacillariophyta), Implications for Ecological Status Assessment, and Description of two New European Species

Ecosystem responses of shallow thermokarst lakes to climate-driven hydrological change: Insights from long-term monitoring of periphytic diatom community composition at Old Crow Flats (Yukon, Canada)

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