Response of the cyanobacterium <i>Gloeotrichia echinulata</i> to iron and boron additions – an experiment from Lake Erken

Hyenstrand, Per; Rydin, Emil; Gunnerhed, Malin; Linder, Jeff; Blomqvist, Peter

doi:10.1046/j.1365-2427.2001.00710.x

Cited by 27 publications

(20 citation statements)

References 28 publications

(30 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…autumnale biomass did not differ significantly between media although at day 19 the biomass in the 10 × iron media was significantly greater than all other media combinations trialed. This result is compatible with previous studies showing cyanobacterial growth to be enhanced by the presence of iron (Paerl et al 1994; Hyenstrand et al 2001; Li et al 2009; Swingley et al 2005). Additionally, the self-detachment of Ph.…”

Section: Discussionsupporting

confidence: 93%

Harnessing the self-harvesting capability of benthic cyanobacteria for use in benthic photobioreactors

2011

View full text Add to dashboard Cite

Benthic species of algae and cyanobacteria (i.e., those that grow on surfaces), may provide potential advantages over planktonic species for some commercial-scale biotechnological applications. A multitude of different designs of photobioreactor (PBR) are available for growing planktonic species but to date there has been little research on PBR for benthic algae or cyanobacteria. One notable advantage of some benthic cyanobacterial species is that during their growth cycle they become positively buoyant, detach from the growth surface and form floating mats. This 'self-harvesting' capability could be advantageous in commercial PBRs as it would greatly reduce dewatering costs. In this study we compared the growth rates and efficiency of 'self-harvesting' among three species of benthic cyanobacteria; Phormidium autumnale; Phormidium murrayi and Planktothrix sp.. Phormidium autumnale produced the greatest biomass and formed cohesive mats once detached. Using this strain and an optimised MLA media, a variety of geometries of benthic PBRs (bPBRs) were trialed. The geometry and composition of growth surface had a marked effect on cyanobacterial growth. The highest biomass was achieved in a bPBR comprising of a vertical polyethylene bag with loops of silicone tubing to provide additional growth surfaces. The productivity achieved in this bPBR was a similar order of magnitude as planktonic species, with the additional advantage that towards the end of the exponential phase the bulk of the biomass detached forming a dense mat at the surface of the medium.

show abstract

Section: Discussionsupporting

confidence: 93%

Harnessing the self-harvesting capability of benthic cyanobacteria for use in benthic photobioreactors

2011

View full text Add to dashboard Cite

show abstract

“…Numbers in parentheses are P-values Research Article ogy (Garcia-Gonzalez et al, 1991). In Lake Erken, Sweden, boron addition increased the growth of cyanobacteria colonies in the presence of added iron, which was itself a limiting nutrient (Hyenstrand et al, 2001). The availability of cobalt, a micronutrient required for the synthesis of vitamin B 12 in phytoplankton, was found to limit primary productivity in eight of 10 South Island lakes studied by Goldman (1964Goldman ( , 1972.…”

Section: Micronutrient Limitation In Lake Waiholamentioning

confidence: 99%

Responses of lake phytoplankton to micronutrient enrichment: a study in two New Zealand lakes and an analysis of published data

2008

View full text Add to dashboard Cite

Natural and anthropogenic changes in nutrient concentrations can affect phytoplankton in marine and freshwater environments. However, potential micronutrient limitation of phytoplankton productivity in fresh waters is often overlooked. To investigate the responses of lake phytoplankton to micronutrient enrichment, we conducted a study in two contrasting New Zealand lakes, and analysed data from the published international literature. We undertook nutrient enrichment bioassays of phytoplankton communities sampled from a mesotrophic reservoir and an eutrophic coastal lake to determine the relative occurrence of micronutrient (iron, boron, cobalt, copper, molybdenum) and macronutrient (nitrogen, phosphorus) limitation. In the mesotrophic reservoir, phytoplankton productivity was phosphorus limited. No evidence of micronutrient limitation was found in six bioassays in summer. In the eutrophic lake, tenfold enrichment of ambient micronutrient concentrations increased the primary productivity in four of 11 bioassays. During a cyanobacterial bloom in the eutrophic lake, experimental enrichment with boron, cobalt, copper or molybdenum increased primary productivity by 40 %. These four micronutrients are commonly applied as agricultural fertiliser in the lakes catchment. Nitrogen or phosphorus enrichment had no effect on phytoplankton productivity at this time. Micronutrient limitation has been reported in more than 40 lakes internationally, and our analysis of published data suggests that the prevalence of micronutrient limitation is unrelated to lake size or trophic state. As micronutrient enrichment can significantly increase phytoplankton productivity in a range of lakes types, the potential contribution of micronutrient enrichment to eutrophication should not be overlooked.

show abstract

“…However, phytoplankton in lakes can also be limited by nitrogen (Blomqvist et al, 1993;Jansson et al, 1996;Camacho et al, 2003) or trace elements (e.g. Evans and Prepas, 1997;Hyenstrand et al, 2001). The effects of nutrient addition to benthic habitats of lakes are less well studied.…”

Section: Introductionmentioning

confidence: 99%

Inorganic nutrient acquisition in a shallow clearwater lake – dominance of benthic microbiota

Andersson

Brunberg

2006

Aquat. Sci.

View full text Add to dashboard Cite

This mesocosm study from the oligotrophic Lake Eckarfjärden in Sweden shows, in contrast to many previous studies, that benthic microbiota dominated production following elevated nutrient concentrations in the water. Increased nutrient concentrations favoured microphytobenthos, whereas phytoplankton biomass remained roughly the same. Microphytobenthos biomass and production were clearly stimulated by nitrogen addition, while phytoplankton showed signs of phosphorus limitation. There were tight interactions between pelagic and benthic habitats and between organisms, and pelagic as well as benthic heterotrophic bacteria were disfavoured when microphytobenthos had access to nitrogen.We conclude that increased nutrient concentrations in the water column may trigger immediate responses in both habitats, altering the tight interactions between microbiota, but not necessarily resulting in a shift towards pelagic production.

show abstract

Response of the cyanobacterium Gloeotrichia echinulata to iron and boron additions – an experiment from Lake Erken

Cited by 27 publications

References 28 publications

Harnessing the self-harvesting capability of benthic cyanobacteria for use in benthic photobioreactors

Harnessing the self-harvesting capability of benthic cyanobacteria for use in benthic photobioreactors

Responses of lake phytoplankton to micronutrient enrichment: a study in two New Zealand lakes and an analysis of published data

Inorganic nutrient acquisition in a shallow clearwater lake – dominance of benthic microbiota

Contact Info

Product

Resources

About