An ecological and hydrochemical study of three springs in NE Iran with the emphasis on diatom diversity

Mirzahasanlou, Jamileh Panahy; Musaabad, Latifeh Ahmadi; Mahmoodlu, Mojtaba G.; Bahalkeh, Arsalan

doi:10.1016/j.limno.2021.125908

Cited by 3 publications

(1 citation statement)

References 38 publications

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“…The diatom diversity index ranged from 2.15 to 3.04, indicating that the diversity was moderate to stable. This condition is in accordance with the division of criteria according to Odum [38], namely, H<1 means the biota community is unstable, and H = 13 means the biota community is stable.…”

Section: Rawapening Lake Diatom Community Structuresupporting

confidence: 73%

Vertical Distribution of Diatoms Analysis to Determine the Condition of Rawapening Lake in the Past through Cluster Analysis with the Bray-Curtis Model

Prasetyo,

Subehi,

Anggoro

et al. 2023

Pol. J. Environ. Stud.

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Rawapening Lake is located in Semarang Regency, Central Java Province, Indonesia, and is the center of various activities, including agriculture, fisheries, sources of electrical energy, raw water, tourism, and culture. A 100-cm-long sediment sample was extracted from Rawapening Lake to reconstruct the dynamics of environmental change by observing the preserved diatoms. Diatoms are sensitive to changes in water quality, so their pattern of existence can reflect changes in lake conditions. The sampling location is located at the mouth of the Tuntang River, the only outlet of Rawapening Lake, which has 20 inlets as water sources. Sediment cores were sliced at 1-cm intervals for diatom analysis. Diatom slide mounts were prepared from about 5 grams of dry sediment using 10% hydrochloric acid

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Section: Rawapening Lake Diatom Community Structuresupporting

confidence: 73%

Vertical Distribution of Diatoms Analysis to Determine the Condition of Rawapening Lake in the Past through Cluster Analysis with the Bray-Curtis Model

Prasetyo,

Subehi,

Anggoro

et al. 2023

Pol. J. Environ. Stud.

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Diatom community response to inland water salinization: a review

Stenger‐Kovács¹,

B‐Béres²,

Buczkó³

et al. 2023

Hydrobiologia

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Both natural and anthropogenic processes can lead to the increasing salinity of surface waters. The knowledge about the ecological consequences of salinization on the biota is limited especially in case of microbiota, like diatoms. We collected the existing knowledge about the relationship between salinity and diatoms in fresh and saline waters. Based on the available papers, conductivity and ion composition are the most important variables shaping diatom communities. Secondary salinization can mask regional differences in diatom assemblages. Trait-based analyses highlight the competitive advantages of motile guild and the extreme trait categories in these environments. The increasing conductivity along a wide conductivity scale decreases the alpha-diversity. Salinization induces the spread and invasion of marine and brackish species into inland freshwaters as well as that of freshwater species tolerating elevated conductivity and/or need specific ions. Concerning food webs, salinity can directly change diatom communities and the subsequent upper trophic levels but most likely this effect manifests as a top-down regulation. Applicable diatom indices are available to assess the level of salinization. Furthermore, diatom-inferred salinity reconstructions are widely applied to assess the past changes of salinity. However, future models predicting ecological consequences of salinization are scarce and sometimes contradictory.

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The Diatom Genus Navicula in Spring Ecosystems with the Description of Navicula aquaesuavis sp. nov.

Cid-Rodríguez,

Cantonati,

Angeli

et al. 2024

Water

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Given the limited understanding of species diversity and ecological preferences of diatoms of the genus Navicula in spring ecosystems, herein we present and describe as species new to science, Navicula aquaesuavis Lange-Bert., Levkov, Cid-Rodríguez, A.A.Saber and Cantonati sp. nov. This species was collected from a mountain spring located above the tree line at 1613 m a.s.l. in the Northern Apennines. The Fontana del Vescovo (Bishop’s spring), which is the locus classicus of the new species, has a low conductivity (60–70 µS cm−1), temperature of ca. 5 °C, circumneutral pH (7.3–7.5), relatively low nitrate (ca. 1 mg L−1), and also suffered from a discharge reduction from 1 to 0.1 L s−1 from 2011 to 2023. The putative new species was confirmed by a second finding in Northern Macedonia, and we thoroughly document this second population as well. We seized the opportunity to describe this new Navicula and review the global literature on the diatom genus Navicula in spring ecosystems. Using the results of this review and our own databases on springs and wells in central Europe and Egypt, we discuss the main Navicula species and their environmental preferences in spring habitats.

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An ecological and hydrochemical study of three springs in NE Iran with the emphasis on diatom diversity

Cited by 3 publications

References 38 publications

Vertical Distribution of Diatoms Analysis to Determine the Condition of Rawapening Lake in the Past through Cluster Analysis with the Bray-Curtis Model

Vertical Distribution of Diatoms Analysis to Determine the Condition of Rawapening Lake in the Past through Cluster Analysis with the Bray-Curtis Model

Diatom community response to inland water salinization: a review

The Diatom Genus Navicula in Spring Ecosystems with the Description of Navicula aquaesuavis sp. nov.

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