Effects of submergence on the growth of Phragmites australis seedlings

Mauchamp, André; Blanch, Stuart J.; Grillas, Patrick

doi:10.1016/s0304-3770(01)00135-8

Cited by 112 publications

(51 citation statements)

References 44 publications

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“…This suggests that seedling deaths might be induced by submergence. It has been recognized that the young seedlings of many marsh plant species are very sensitive to submergence and either die or stop growing if they are submerged (Armstrong et al 1999;Mauchamp et al 2001;Nishihiro et al 2004b). In C. rugulosa, it is considered that seedlings can survive if the rainfall is not enough to cause inundation of marsh ground during the juvenile period or if seeds germinate in relatively high areas where seedlings are not submerged during rainy days.…”

Section: Discussionmentioning

confidence: 99%

Relationship between seed and clonal growth in the reproduction of Carex rugulosa Kük. in riverside meadows

Araki¹,

Kunii²

2008

Plant Species Biology

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. No seedlings were observed at plots where the ramets from rhizomes grew densely. In contrast, seedlings appeared in plots where all rhizomatous ramets were artificially cut. The number of seedlings corresponded to 17.5-39.5% of that of buried seeds. All these seedlings were submerged and died when it rained heavily. In the genotype analysis using allozyme detection, one of the phosphoglucoisomerase loci (Pgi-2) indicated a pair of alleles. Among eight plots (each plot was 50 or 60-cm square), four showed an excess of heterozygotes and two showed homozygote domination in the Pgi-2 genotype. These results suggest that: (i) seed germination is suppressed in crowded ramets; (ii) seedling survival is severely reduced by inundation; and (iii) the population is usually maintained by clonal growth. As germination is induced in open areas, it is hypothesized that the main role of seed is recovery after vegetation decline caused by environmental stresses or colonization to other areas without dense vegetation.

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Section: Discussionmentioning

confidence: 99%

Relationship between seed and clonal growth in the reproduction of Carex rugulosa Kük. in riverside meadows

Araki¹,

Kunii²

2008

Plant Species Biology

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“…Low rates of seedling establishment and the sensitivity of seedlings to submergence are well-established for P. australis, and seedling survival was suggested to be even lowered by lake water regulation, and the subsequent lack of periodically non-submerged natural seedbeds (Rea 1996, Mauchamp, Blanch & Grillas 2001. In Lake Constance, a largely non-regulated lake with natural water regimes, the rate of generative propagation in reed stands is likely to diminish due to the high susceptibility of seedlings to P. phragmitis.…”

Section: Discussionmentioning

confidence: 99%

Pythium phragmitis sp. nov., a new species close to P. arrhenomanes as a pathogen of common reed (Phragmites australis)

Nechwatal

Wielgoss

Mendgen

2005

Mycological Research

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Pythium phragmitis sp. nov., a new species close to P. arrhenomanes as a pathogen of common reed (Phragmites australis) During a study on the occurrence and pathogenicity of oomycetes in the reed-belt (Phragmites australis) of Lake Constance (Germany), a new Pythium resembling the important cereal pathogen species complex P. arrhenomanes/P. graminicola was consistently isolated from necrotic mature reed leaves and reed rhizosphere samples. The new species proved to be significantly more aggressive towards reed leaves and seedlings in vitro than related species. It is characterised by filamentous, inflated sporangia and plerotic oospores with usually more than one antheridium. ITS and cox II sequence data indicate this new species shares a common ancestor with P. arrhenomanes, but the sequence differences are clearly consistent with a divergence of the two taxa and with P. phragmitis being a distinct species. ITS 1 and 2 of 15 isolates of the taxon consistently differed from P. arrhenomanes by 13 positions. Sequence analyses of the cox II gene confirmed the new species' phylogenetic position. This paper gives a formal description of the taxon as P. phragmitis sp. nov., providing information on morphology, ecology and pathogenicity in comparison to related species. As indicated by the close association to Phragmites australis, the high aggressiveness towards reed leaves and seedlings, and the abundance in the investigated stands, Pythium phragmitis might act as a reed pathogen of considerable importance, in particular under flooding situations.

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“…9 Mean total biomass for floating seedlings of S. erectum harvested at the end of the experiment. Vertical bars indicate ±SE such as P. thunbergii, P. australis, and H. japonicus grow well in water logged conditions but seedling survival rates and growth rates are reduced at water levels more than twice their heights (Mauchamp et al 2001;Choo et al 2015). It seems that S. erectum is more competitive than its major accompanying species, particularly in inundation conditions as opposed to waterlogged condition.…”

Section: Discussionmentioning

confidence: 99%

Establishment strategy of a rare wetland species Sparganium erectum in Korea

2017

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Background: To reveal establishment strategy of Sparganium erectum, we tried to find realized niche of adults through field survey and effects of water level on the establishment process through mesocosm experiments. Results: In the field survey, the height and coverage of community living in deeper water were greater than those of community living in shallow water. There was no statistically significant difference (p > 0.05) in the means of water and soil properties between the two communities. In mesocosm experiments, we found no correlation between water levels and germination rates, but S. erectum seedlings have characteristics of post germination seedling buoyancy when S. erectum seeds germinated in inundation conditions. Shoot height, total leaf length, and survival rates of sinking seedlings in shallow water levels at −5, 0, and 5 cm were higher than those in deeper water levels at 10 and 20 cm. Floating seedlings established in water levels of 3 and 6 cm only. The seedlings could live up to 6 weeks in floating state but died if they were unable to establish. Conclusions: The water level around adult S. erectum communities in the field were different from the water level at which S. erectum seedlings can survive in the mesocosm experiments. The findings provided not only understanding of S. erectum habitat characteristics but also evidence to connect historical links between the early seedlings stage and adult habitat conditions. We suggested the logical establishment strategy of S. erectum based on the data.

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Effects of submergence on the growth of Phragmites australis seedlings

Cited by 112 publications

References 44 publications

Relationship between seed and clonal growth in the reproduction of Carex rugulosa Kük. in riverside meadows

Relationship between seed and clonal growth in the reproduction of Carex rugulosa Kük. in riverside meadows

Pythium phragmitis sp. nov., a new species close to P. arrhenomanes as a pathogen of common reed (Phragmites australis)

Establishment strategy of a rare wetland species Sparganium erectum in Korea

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