Germination characteristics of lakeshore plants under an artificially stabilized water regime

Nishihiro, Jun; Araki, Sachiko; Fujiwara, Nobuo; Washitani, Izumi

doi:10.1016/j.aquabot.2004.05.005

Cited by 48 publications

(38 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because germination was induced on bare ground, it is inferred that the seeds of C. rugulosa germinate in response to light or temperature conditions, similar to other marsh plants (Ekstam & Forseby 1999;Jutila 2003;Lindig-Cisneros & Zedler 2002;Nishihiro et al 2004a). This trait suppresses germination in dense ramet growth where the light conditions for seedling growth will not be adequate and promotes germination in open areas where light conditions are favorable.…”

Section: Discussionmentioning

confidence: 98%

“…The seeds of some hygrophytes germinate in response to diurnal temperature fluctuations (Ekstam & Forseby 1999;. It has been pointed out that this trait promotes germination in bare ground that is favorable for seedling growth (Nishihiro et al 2004a). Germination under crowded vegetation will be suppressed because the diurnal change in light intensity does not cause enough temperature fluctuation of the ground to induce seed germination.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Araki¹,

Kunii²

2008

Plant Species Biology

View full text Add to dashboard Cite

. 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.

show abstract

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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

Araki¹,

Kunii²

2008

Plant Species Biology

View full text Add to dashboard Cite

show abstract

“…For example, seedling emergence in at least 42 species, including 23 annual and 19 perennial, was concentrated from April to early May (Nishihiro et al 2004a), and a significant reduction in seedling emergence occurred in 19 of 24 species under experimental inundated conditions (Nishihiro et al 2004b). Furthermore, our observational study revealed that the naturally emerged seedlings of marsh plants suffered high mortality when the ground surface was inundated continuously for more than 3 days (Nishihiro et al 2004a).…”

Section: Evaluation Of the Area Of Potential Regeneration Safe-sitesmentioning

confidence: 73%

“…Our previous studies in the remnant lakeshore reedmarsh suggest that although species rich soil seed banks are still retaining in the soil, the opportunity for seed germination and/or seedling establishment is largely reduced by the inundation (Nishihiro et al 2004a(Nishihiro et al , 2004b. The reduction in regeneration safe-sites is suspected as a major cause of the recent decline of the species diversity.…”

mentioning

confidence: 97%

“…We also predicted the area of PRS under various potential water regimes. Based on previous studies of the environmental requirements for seed germination and seedling establishment of plants growing in lakeshore reedmarsh (Nishihiro et al 2004a(Nishihiro et al , 2004b, PRS were defined as areas of emergent vegetation that escaped severe inundation and were estimated using lake water levels and lakeshore topography. In addition, the validity of these criteria was verified in a small-scale lakeshore experiment.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Quantitative evaluation of water-level effects on “regeneration safe-sites” for lakeshore plants in Lake Kasumigaura, Japan

Nishihiro

Washitani

2009

Lake and Reservoir Management

Self Cite

View full text Add to dashboard Cite

More Exotic and Fewer Native Plant Species: Riverine Vegetation Patterns Associated With Altered Seasonal Flow Patterns

Greet

Cousens

Webb

2012

River Research & Apps

View full text Add to dashboard Cite

Natural flow regimes are important for sustaining riverine vegetation. The regulation of river flows to provide water for agriculture often results in changes to flow timing. This study assesses the impact of altered seasonal flow patterns on riverine flora. Within temperate Australia, we surveyed the vegetation of five lowland rivers, three of which have large dams that alter their seasonal flow patterns; the other two are unregulated. From four to six sites were selected on each river, and these were classified into three levels of regulation based on the extent to which the timing of their seasonal flow patterns were altered. Sites were surveyed in winter and the following summer. Permanent quadrats were also established at a number of the surveyed sites and resurveyed every 3 months. Of the 267 plant taxa identified, 145 were exotic (non‐native). More exotic taxa and fewer native taxa were associated with increasing level of seasonal flow inversion (regulation). In particular, greater numbers of short‐lived exotic terrestrial taxa and fewer native woody taxa were associated with increasing level of regulation. Some exotic woody species (e.g. willows) were more common in the unregulated rivers and may have life‐history traits favoured by the natural seasonal flow patterns of study area. Multivariate analyses showed that level of regulation had a significant effect on the overall composition of the riverine vegetation. Our results provide support for the hypotheses that flow regulation adversely affects native species diversity and increases the vulnerability of riparian zones to invasion by exotic species; however, these effects are dependent on plant species' life‐history strategies. Our study highlights the importance of natural seasonal flow patterns for sustaining native riverine plant communities. Flow management aimed at maintaining or restoring ecological values should consider seasonal flow patterns. Winter/spring flow peaks may be particularly important for the recruitment of native riverine plants, especially trees and shrubs, and reducing the extent of exotic annuals and grasses. Copyright © 2012 John Wiley & Sons, Ltd.

show abstract

Germination characteristics of lakeshore plants under an artificially stabilized water regime

Cited by 48 publications

References 20 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

Quantitative evaluation of water-level effects on “regeneration safe-sites” for lakeshore plants in Lake Kasumigaura, Japan

More Exotic and Fewer Native Plant Species: Riverine Vegetation Patterns Associated With Altered Seasonal Flow Patterns

Contact Info

Product

Resources

About