Impact of acidification and eutrophication on macrophyte communities in soft waters. II. Experimental studies

Roelofs, J.G.M.; Schuurkes, J. A. A. R.; Smits, A.J.M.

doi:10.1016/0304-3770(84)90059-7

Cited by 201 publications

(116 citation statements)

References 18 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…Until now, most studies of J. bulbosus have been conducted in moderately acidic lakes, particularly in Sweden, the Netherlands, and Scotland, that have resulted from acid depositions and which are clearly different from lignite mining lakes. Those studies focused on the establishment and expansion of J. bulbosus (Hinneri, 1976 ;Roelofs, 1983 ;Van Damm, 1988), on the interaction of plant growth with pH values (Wortelboer, 1990), and on the role of CO # in the survival of J. bulbosus (Roelofs et al, 1984 ;Wetzel et al, 1984 ;Sveda$ ng, 1992 It is hypothesized that J. bulbosus has developed numerous adaptation mechanisms that interact with each other to help to cope with the extreme conditions of acid lignite-mining lakes. Here, data are presented which comprise the first elaborate study of the morphology, and which relate to the physiology and to the biochemical traits which enable growth of J. bulbosus in an extreme environment.…”

Section: mentioning

confidence: 99%

“…sulphate reduction, denitrification, respiration) in the sediment is rapidly lost to the atmosphere. There is evidence however, to demonstrate that inorganic C controls the growth dynamics of J. bulbosus and that its competitive ability increases with increase in CO # in the system (Roelofs et al, 1984 ;Wetzel et al, 1984 ;Sveda$ ng, 1992). The question then is how J. bulbosus avoids inorganic C limitation in acidic mining lakes.…”

Section: Characterization Of Iron Plaquementioning

confidence: 99%

See 1 more Smart Citation

Juncus bulbosus as a pioneer species in acidic lignite mining lakes: interactions, mechanism and survival strategies

Chabbi

1999

New Phytologist

View full text Add to dashboard Cite

Bulbous rush (Juncus bulbosus) initiates plant colonization in extremely acid lakes resulting from coal mining operations. Various analytical techniques (methylene blue\agar method, Ti$ + -citrate solution) X-ray diffraction (XRD), scanning electron microscopy (SEM), and Energy-dispersive X-ray (EDX) were used to assess the mechanisms and strategies employed by J. bulbosus to overcome the extreme conditions. The plant releases oxygen into the rhizosphere in turn increasing the redox potential and inducing iron oxide plaque formation. XRD showed that the iron oxide of the plaque is mainly goethite that has been developed in the presence of CO # ; SEM showed that there is a micro-space between the roots and sand grains which is inhabited by microorganisms. Furthermore, SEM-EDX studies on internal iron distribution demonstrate that iron toxicity is delayed by the physiological and biochemical structure of the plant. It is suggested that J. bulbosus uses a variety of mechanisms and strategies (morphological, physiological and biochemical adaptation) which are mainly complementary and which interact with each other to help J. bulbosus to manage its growth and survival in an extreme environment.

show abstract

Section: mentioning

confidence: 99%

Section: Characterization Of Iron Plaquementioning

confidence: 99%

Juncus bulbosus as a pioneer species in acidic lignite mining lakes: interactions, mechanism and survival strategies

Chabbi

1999

New Phytologist

View full text Add to dashboard Cite

show abstract

“…Alk; Medium; and High plant densities'' (data do not shown). The increase in porewater CO 2 concentrations from 0.6 mM in ''Control'' to 1.5 mM in ''Alk'' is likely to have caused the areal biomass increase as photosynthesis of isoetids does not saturate until 2-8 mM (Søndergaard and Sand-Jensen 1979;Roelofs et al 1984;Pedersen et al 1995). In the present study, however, competition from other plants species was excluded and in the field situation, alkalinization of the water column would likely promote the growth of fastgrowing elodeids that are competitively superior to isoetids (Arts 2002;Lucassen et al 2009;Spierenburg et al 2009;Raun et al 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Isoetids have a high radial O 2 loss across the entire root system (SandJensen et al 1982;Pedersen et al 1995), and as a result, the rhizosphere is often permanently oxic, and problems with reduced phytotoxins are thus prevented (Holmer et al 1998;Pedersen et al 2004). Under such conditions with an oxic rhizosphere, the increased production of CO 2 , linked to sediment mineralization (Laanbroek 1990;Mattson and Likens 1993), can stimulate the underwater photosynthesis (Søndergaard and Sand-Jensen 1979;Roelofs et al 1984;Pedersen et al 1995) and growth of the isoetids (Madsen et al 2002;Andersen et al 2005;Pulido et al 2011). Therefore, the overall outcome of increased sediment mineralization depends on the ability of isoetids to oxidize their rhizosphere (Pulido et al 2011), and an effective oxidation of the rhizosphere partly depends on plant density (Tessenow and Baynes 1978).…”

Section: Introductionmentioning

confidence: 99%

Elevated alkalinity and sulfate adversely affect the aquatic macrophyte Lobelia dortmanna

et al. 2012

View full text Add to dashboard Cite

The increase in alkalinity and SO 4 2-in softwater lakes can negatively affect pristine isoetid population because the increase in alkalinity and SO 4 2-can stimulate sediment mineralization and consequently cause anoxia. The consequences of increased sediment mineralization depend on the ability of isoetids such as Lobelia dortmanna to oxidize the rhizosphere via radial O 2 loss. To study how alkalinity and SO 4 2-affect the isoetid L. dortmanna, and if negative effects could be alleviated by neighboring plants, three densities of L. dortmanna (''Low'' = 64 plants m -2 , ''Medium'' = 256 plants m -2 and ''High'' = 1,024 plants m -2 ) were exposed to elevated alkalinity in the water column, or a combination of both elevated alkalinity and SO 4 2-, and compared to a control situation. The combination of SO 4 2-and alkalinity significantly increased mortality, lowered areal biomass and reduced actual photosynthetic efficiency. Plant density did not significantly alleviate the negative effects caused by SO 4 2-and alkalinity. However, actual photosynthetic efficiency was significantly positively correlated to redox potential in the sediment, indicating a positive relationship between plant performance and sediment oxidation. The negative effects on L. dortmanna were probably caused by long periods of tissue anoxia by itself or in combination with H 2 S intrusion. Therefore, increase in both SO 4 2-and alkalinity surface water can dramatically affect L. dortmanna populations, causing reduction or even disappearance of this icon species.

show abstract

“…Excessive nutrient loading encourages fast-growing competitive species as well as the development of plankton and epiphytic algae (e.g. Sand-Jensen and Søndergaard 1981;Roelofs et al 1983;Krause and King 1994;Vöge 1988Vöge , 1992Rintanen 1996;Szmeja 1997;Horn and Petzold 1999;Grzybowski et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Monitoring the Vitality of Isoëtes Lacustris by Using a Non-Destructive Method

Vöge¹

2015

Limnological Review

View full text Add to dashboard Cite

Abstract:The aim of ongoing studies was to expand the non-destructive monitoring of Isoëtes lacustris (Vöge 2004) resulting in a description of the vitality and structure of the population. The influence of the environment on the development of the plant was the subject of extended studies carried out between 1995 and 2014 in more than 100 lakes throughout Europe. The environment was characterized through conductivity, pH and Secchi depth of the lake water and the accompanying submersed plant species, as well as the plant performance through the mean number of leaves of 20 sporogenous plants. The counting of the leaves was performed whilst diving. The vitality level was defined based on Vöge (2004) and related to the environmental conditions; these are referred to in the context. The inventory of the accompanying plant species may reflect a changing environment. The method is demonstrated through case examples. A highly significant correlation between the mean and the smallest number of leaves of sporogenous plants enables separating juvenile from adult plants. Finally, recent results show a relationship between the vitality level and the structure of the population.

show abstract

Impact of acidification and eutrophication on macrophyte communities in soft waters. II. Experimental studies

Cited by 201 publications

References 18 publications

Juncus bulbosus as a pioneer species in acidic lignite mining lakes: interactions, mechanism and survival strategies

Juncus bulbosus as a pioneer species in acidic lignite mining lakes: interactions, mechanism and survival strategies

Elevated alkalinity and sulfate adversely affect the aquatic macrophyte Lobelia dortmanna

Monitoring the Vitality of Isoëtes Lacustris by Using a Non-Destructive Method

Contact Info

Product

Resources

About