Fishpond sediments - the source of palaeoecological information and algal "seed banks"

Poulíčková, Aloisie; Lysáková, Monika; Hašler, Petr; Lelková, Eva

doi:10.1127/0029-5035/2008/0086-0141

Cited by 11 publications

(2 citation statements)

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“…The C organic /N total ratio of the sediment lies around 10, indicating high amounts of algae and plankton (Bowen, 1966). High proportions of plant organic matter from terrestrial or aquatic macrophytes can be excluded because otherwise the C organic /N total ratio would range distinctly over 10 (Meyers, 1994;Poulíčková et al, 2008).…”

Section: Resultsmentioning

confidence: 98%

Long-lived banks of oospores in lake sediments from the Trans-Urals (Russia) indicated by germination in over 300 years old radiocarbon dated sediments

2014

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Section: Resultsmentioning

confidence: 98%

Long-lived banks of oospores in lake sediments from the Trans-Urals (Russia) indicated by germination in over 300 years old radiocarbon dated sediments

2014

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“…It was previously documented that some species of diatoms can survive desiccation by producing resting spores and resting cells, which is a successful way for surviving environmental stress (Hargraves & French, 1975;Souffreau, 2011). Resting cells act as a seed bank in the sediment (Jewson et al, 2006;Poulicková et al, 2008) which could explain the rapid spring blooms of diatoms. Resting cells and spores are also resistant to dark, cold and nutrient limited conditions (McQuoid & Hobson, 1995).…”

Section: Discussionmentioning

confidence: 99%

Tolerance of Benthic Diatoms to Severe Environmental Stress: A Case Study in Shatt Al-Arab River, Basrah, Iraq

Al-Saedy¹

2021

Biol. Appl. Environ. Res.

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The present work aims at investigating the ability of diatoms to re-establish their community after a severe environmental stress such desiccation. Diatoms were subjected to extreme environmental stress to observe their survival capability. Samples of sediment were collected from three sites, Maqal, Abu Flos and Al-Faw along the course of Shatt Al-Arab river. Different temperature regimes were implemented for testing the ability of diatoms to recover desiccation. Experiments were performed at various temperatures, 10, 15, 20, 25, 30, 35 and 40 ℃. A total of 67 diatom species were identified and included freshwater forms (25%), brackish water forms (25%) and marine species (26%), as well as 24% of taxa with undefined ecological preferences. The recovery rate of diatom species at all sites appeared to be rather similar. 40%, 38% and 37% of all taxa encountered were able to recover desiccation at sites 1, 2 and 3, respectively. Recovering ability of those species varies with variable temperature. Favourable temperature for most species to regrow ranged between 15 and 25 oC. Nitzschia palea exhibited the maximum growth rate at all temperatures (10-35 oC). 32% of all epiphytic species encountered were able to recover at 20 oC. Five species: Craspedostauros britannicus, Nitzschia invisitata, Pinnularia quadratarea, Simonsenia sp. and Tryblionella plana were not previously reported in Iraq and considered as new to the region. A new species, Synedropsis abuflosensis, was found. The outcome of the present work clearly indicates that some species of diatoms can recover after exposure to sever environmental stress.

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Experimental freezing of freshwater pennate diatoms from polar habitats

Hejduková

Nedbalová

2021

Protoplasma

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Fishpond sediments - the source of palaeoecological information and algal "seed banks"

Cited by 11 publications

References 0 publications

Long-lived banks of oospores in lake sediments from the Trans-Urals (Russia) indicated by germination in over 300 years old radiocarbon dated sediments

Long-lived banks of oospores in lake sediments from the Trans-Urals (Russia) indicated by germination in over 300 years old radiocarbon dated sediments

Tolerance of Benthic Diatoms to Severe Environmental Stress: A Case Study in Shatt Al-Arab River, Basrah, Iraq

Experimental freezing of freshwater pennate diatoms from polar habitats

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