Anthropogenically driven habitat formation by a tube dwelling diatom on the Northern Patagonian Atlantic coast

Fricke, Anna; Kihara, Terue C.; Kopprio, Gérmán A.; Hoppenrath, Mona

doi:10.1016/j.ecolind.2017.01.040

Cited by 8 publications

(6 citation statements)

References 36 publications

(59 reference statements)

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“…Specimens of Berkeleya rutilans analyzed in the present study are similar to those found by Fricke et al (2017). The analyzed specimens differ from those shown by Cox (1975) and Lobban (1985) by having a higher stria density (30-34 in 10 μm vs. 27 in 10 μm, in the valve centre) and better agree with those described by Mizuno (1977) (24-36 in 10 μm).…”

Section: Discussionsupporting

confidence: 80%

Naviculales (Bacillariophyta) from coastal waters of the Gulf of San Matías (Province of Río Negro, Argentina)

Sunesen

Sar

2019

Gayana Bot.

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Section: Discussionsupporting

confidence: 80%

Naviculales (Bacillariophyta) from coastal waters of the Gulf of San Matías (Province of Río Negro, Argentina)

Sunesen

Sar

2019

Gayana Bot.

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“…The MPB are not only the foundation of many marine coastal food webs but they also play essential roles in elemental cycling and sediment stability. 46,47 Previous studies have emphasized the central role of MPB in multiple ecosystem functions. 48,49 Despite this, only a few studies have investigated the influence of microplastics on soft sediment MPB communities.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The MPB are not only the foundation of many marine coastal food webs but they also play essential roles in elemental cycling and sediment stability. , Previous studies have emphasized the central role of MPB in multiple ecosystem functions. , Despite this, only a few studies have investigated the influence of microplastics on soft sediment MPB communities. In these studies, the effects on MPB are generally related to indirect effects on suspension feeders ingesting microplastics and their cascading effects on MPB biomass. , …”

Section: Introductionmentioning

confidence: 99%

Effects of Polyester Microfibers on Microphytobenthos and Sediment-Dwelling Infauna

Hope

Coco

Thrush

2020

Environ. Sci. Technol.

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Microplastics are accumulating in coastal soft sediments, the majority of which are fibres. Despite this, little is known about the potential ecological effects of fibrous material on functionally important benthic organisms. For instance, the microphytobenthos (MPB) and deposit-feeding bivalves which are critical for soft sediment ecosystem functions such as nutrient cycling. Red polyester microfibers (1.8 ± 0.9mm) were added at varying concentrations (0% -XX% DW sediment) to the surface 1cm of sediment in the chambers. The effects of increasing microfiber concentrations on microphytobenthic (MPB) biomass (chl a) and composition (fatty acid (FA) biomarkers) were evaluated after a total exposure period of XX days. Half the chambers were exposed to a 12 h light/dark cycle, to allow photosynthesis to occur, while the remaining + nitrite (together as NOx) and ammonium (NH4 + ) concentrations were elevated at the highest microfiber concentrations. When the light was blocked (dark conditions) only NH4 + concentrations increased. The difference in porewater nutrient stores suggests that photosynthesis in the MPB together with M.liliana burrowing moderates the effect of microfibers on soft sediment nutrient cycling. These findings demonstrate the potential for microfibers to alter soft sediment ecosystems and influence ecological functions through complex feedbacks at the base of the benthic foodweb.

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“…N. filiformis has a wide ecological preference and was found to flourish in areas polluted by industrial effluents (Lange-Bertalot et al, 2017). This species is one of the most abundant tube-forming diatoms (Carr & Hergenrader, 1987;Fricke et al, 2017). This might explain its ability to withstand desiccation.…”

Section: Discussionmentioning

confidence: 97%

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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Anthropogenically driven habitat formation by a tube dwelling diatom on the Northern Patagonian Atlantic coast

Cited by 8 publications

References 36 publications

Naviculales (Bacillariophyta) from coastal waters of the Gulf of San Matías (Province of Río Negro, Argentina)

Naviculales (Bacillariophyta) from coastal waters of the Gulf of San Matías (Province of Río Negro, Argentina)

Effects of Polyester Microfibers on Microphytobenthos and Sediment-Dwelling Infauna

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

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