Carex secalina (Cyperaceae), a species critically endangered in Europe: from propagule germination to propagule production

Zukowski, W; Lembicz, Marlena; Olejniczak, Paweł; Bogdanowicz, Agnieszka; Chmiel, Julian

doi:10.5586/asbp.2005.019

Cited by 10 publications

(9 citation statements)

References 12 publications

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“…As we have previously found, the species has occurred on highly salt-affected solontchak and solonetz soils, where electric conductivity reached values of 1.7-6.2 mS × cm −1 [66]. On the other hand, Žukowski et al [58] pointed out that enlarging of C. secalina areas in Poland could be restricted by inhibition of germination and seedling survival due to high salinity of soil. But the authors noted that this hypothesis needs verification.…”

Section: Distribution In the Czech Republic And In Slovakiamentioning

confidence: 94%

“…The authors found a positive correlation between population size of the species and grazing intensity. Other significant factors enhancing the germination efficiency were diaspore trampling into the ground by animal hooves, and the high generative reproduction abilities of individuals (individuals producing large amounts of seeds) [58].…”

Section: Distribution In the Czech Republic And In Slovakiamentioning

confidence: 99%

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Distribution and ecology of Carex secalina in the Czech Republic and Slovakia

et al. 2012

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Current and historical occurrence as well as coenotic affinity and ecology of Carex secalina in the Czech Republic and Slovakia are presented. The study is based on revision of herbarium specimens from 25 herbaria, literature data excerption and a field survey carried out during 2004-2010. Altogether, 168 sites were documented in the Czech Republic divided to two separate areas. Stabile occurrence trend was found in last decades, because 45 localities were documented in period 1975-1999 (27% of sites) and recent occurrence was confirmed at 42 localities (24% of sites). On the basis of our current knowledge the species was included into the IUCN threat category VU (vulnerable). In Slovakia, 19 localities of the species were recorded in total, but only 4 sites were confirmed recently (21% of sites recorded). However, only a small number of individuals was recorded there (less than 50 individuals in total) and half of this sites is acutely threatened by destruction (ploughing, secondary succession). Therefore, the C. secalina status in the Slovak Red List was changed to the IUCN category "critically endangered" (CR). Results of the study are summarised in the maps of historical and current species distribution. C. secalina usually occurred in halophytic grassland communities, especially in association Agrostio stoloniferae-Juncetum ranarii Vicherek 1962. However, it may occur in many other communities which suggest that the species had not well-defined coenotic relationships. On the basis of our knowledge, we consider C. secalina as an obligate halophyte.

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Section: Distribution In the Czech Republic And In Slovakiamentioning

confidence: 94%

Section: Distribution In the Czech Republic And In Slovakiamentioning

confidence: 99%

Distribution and ecology of Carex secalina in the Czech Republic and Slovakia

et al. 2012

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“…Moreover, our studies on sedge seed germination have shown a high importance of life history traits (Øukowski et al 2005;Lembicz et al 2010). Our experiment under controlled conditions of a garden allowed to observe the effect of mother plant age on the development of seeds and seedlings of Carex secalina.…”

Section: Factors Controlling Germinationmentioning

confidence: 99%

Seed germination in sedges: a short review

Zukowski

Bogdanowicz²,

Lembicz³

2010

Biodiversity: Research and Conservation

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Five patterns of seed germination in the sedges of the genus Carex are presented, based on the literature data and the results of the authorsí own research. They include the pattern of C. acutiformis, C. arenaria, C. remota, C. flava and C. communis. These patterns were constructed on the basis of seed specific requirements for development, such as stratification, temperature, dormancy and time of germination. Majority of sedges follow the pattern of C. acutiformis or C. remota. In both cases, stratification and either high or low temperature are essential for seed germination. Seeds that start to germinate early (C. remota pattern) are characterized by the absence of the distinct peaks of germination, as opposed to the C. acutiformis pattern with the germination peak in March. Our long-term investigations, conducted on the group of individuals in controlled conditions, revealed significant differences in seed size and the ability of seeds to germinate depending on the age of mother plants. We postulate that mother plant age is a new factor that should be considered in the construction of seed germination patterns.

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“…In winter, the aboveground parts of plants die and form necromass. In subsequent years, renewed vegetative growth begins in April [22].…”

Section: Species Studiedmentioning

confidence: 99%

“…The species studied was the sedge Carex secalina because it is a perennial, monoecious species, easy to cultivate, and its individuals are clearly distinguishable and do not reproduce vegetatively [22].…”

Section: Introductionmentioning

confidence: 99%

Costs of reproduction in life history of a perennial plant Carex secalina

et al. 2011

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We tested a hypothesis based on life history theory that examines reproductive costs incurred by individuals in consecutive years of their life. A multi-year dataset of resource allocation to vegetative and reproductive structures was analysed in Carex secalina — a perennial, monoecious sedge, reproducing only sexually. In a four-year garden experiment, we assessed above-ground biomass at the end of each season and reproductive allocation expressed as the total length of male and female spikes. The study was aimed at determining how size and age of a plant relates to its reproduction, and how the rate of reproduction affects the year-toyear biomass change in Carex secalina. We observed that after each reproductive episode, individuals had significantly smaller sizes and produced a lower number of generative tillers. The total production of reproductive structures decreased significantly with age in all populations. Moreover, the decrease in plant biomass was greater when more reproductive structures were produced in a previous year, which indicates that the plants incur costs of reproduction in terms of above-ground biomass production.

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Carex secalina (Cyperaceae), a species critically endangered in Europe: from propagule germination to propagule production

Cited by 10 publications

References 12 publications

Distribution and ecology of Carex secalina in the Czech Republic and Slovakia

Distribution and ecology of Carex secalina in the Czech Republic and Slovakia

Seed germination in sedges: a short review

Costs of reproduction in life history of a perennial plant Carex secalina

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