Effects of the substances secreted from Closterium aciculare (Charophyceae, Chlorophyta) on the growth of freshwater phytoplankton under iron-deficient conditions

Naito, Koichiro; Suzuki, Mitsuko; Mito, Saeko; Hasegawa, Hiroshi; Matsui, Masanao; Imai, Ichiro

doi:10.3800/pbr.1.191

Cited by 4 publications

(2 citation statements)

References 70 publications

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“…The Lake Malawi observations thus suggest that the Aulacoseira species in paleolake Huka sediment probably differed from one area to another. This could be caused by spatial differences in nutrient availability-for example, A. ambigua is favoured by some nutrient rich conditions (Manoylov et al 2009) whilst A. granulata can use organic iron complexes (Naito et al 2006). Alternatively, species in a lake can also change over time due climate warming or cooling, leading to altered nutrient conditions (Hall and Smol 2010).…”

Section: Erupted Paleolake Huka Clast H5mentioning

confidence: 99%

Eruptive and environmental processes recorded by diatoms in volcanically dispersed lake sediments from the Taupo Volcanic Zone, New Zealand

et al. 2015

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Late Pleistocene diatomaceous sediment was widely dispersed along with volcanic ash (tephra) across and beyond New Zealand by the 25.4 ka Oruanui supereruption from Taupo volcano. We present a detailed analysis of the diatom populations in the Oruanui tephra and the newly discovered floras in two other eruptions from the same volcano: the 28.6 ka Okaia and 1.8 ka Taupo eruptions. For comparison, the diatoms were also examined in Late Pleistocene and Holocene lake sediments from the Taupo Volcanic Zone (TVZ). Our study demonstrates how these microfossils provide insights into the lake history of the TVZ since the Last Glacial Maximum.Morphometric analysis of Aulacoseira valve dimensions provides a useful quantitative tool to distinguish environmental and eruptive processes within and between individual tephras. The Oruanui and Okaia diatom species and valve dimensions are highly consistent with a shared volcanic source, paleolake and eruption style (involving large-scale magmawater interaction). They are distinct from lacustrine sediments sourced elsewhere in the TVZ. Correspondence analysis shows that small, intact samples of erupted lake sediment (i.e., lithic clasts in ignimbrite) contain heterogeneous diatom populations, reflecting local variability in species composition of the paleolake and its shallowly buried sediments. Our analysis also shows a dramatic post-Oruanui supereruption decline in Cyclostephanos novaezelandiae, which likely reflects a combination of (1) reorganisation of the watershed in the aftermath of the eruption, and (2) overall climate warming following the Last Glacial Maximum. This decline is reflected in substantially lower proportions of C. novaezelandiae in the 1.8 ka Taupo eruption deposits, and even fewer in post-1.8 ka sediments from modern (Holocene) Lake Taupo. Our analysis highlights how the excellent preservation of siliceous microfossils in volcanic tephra may fingerprint the volcanic source region and retain a valuable record of volcanically influenced environmental change.

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Section: Erupted Paleolake Huka Clast H5mentioning

confidence: 99%

Eruptive and environmental processes recorded by diatoms in volcanically dispersed lake sediments from the Taupo Volcanic Zone, New Zealand

et al. 2015

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“…A significant amount of iron (Fe) present in the fish hydrolysate. Iron is an especially essential element for the growth of phytoplankton and its deficiency is well known to suppress primary productivity in both freshwater and marine ecosystem (Naito et al, 2006). Iron has the potential to control the growth and composition of phytoplankton communities.…”

Section: Physicochemical Parameters Of Water Qualitymentioning

confidence: 99%

In-Vitro Assessment of Plankton Production Using Fish Hydrolysate

2016

International Journal of Innovative Studies in Aquatic Biology

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Abstract:An experiment was conducted in glass jars for four weeks to assess the efficiency of fish hydrolysate (FH) of 0.01, 0.05, 0.25, 1.25 and 6.25 (8), cyanophyceae (7) and zooplankton (7) were identified. The results show that FH treatment 0.25 ml L -1 in T-3 enhances the phytoplankton and zooplankton production than other jar waters. So it has been recommended for application in aquaculture ponds as a biofertilizer for the well growth of the plankton species.

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Chemically-Mediated Interactions in Microalgae

Borowitzka

2016

The Physiology of Microalgae

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Effects of the substances secreted from Closterium aciculare (Charophyceae, Chlorophyta) on the growth of freshwater phytoplankton under iron-deficient conditions

Cited by 4 publications

References 70 publications

Eruptive and environmental processes recorded by diatoms in volcanically dispersed lake sediments from the Taupo Volcanic Zone, New Zealand

Eruptive and environmental processes recorded by diatoms in volcanically dispersed lake sediments from the Taupo Volcanic Zone, New Zealand

In-Vitro Assessment of Plankton Production Using Fish Hydrolysate

Chemically-Mediated Interactions in Microalgae

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