Effect of environmental factors on chlorophyll a fluorescence of the fen orchid Liparis loeselii in European Union priority protected habitat 7210* Calcareous fens with Cladium mariscus and species of the Caricion davallianae

Dokane, Kristine; Megre, Dace; Roze, Daina; Strode, Linda

doi:10.1007/s12210-018-0699-2

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…In the case of studies with rare and endangered plants, especially with respect to legally protected species, special care is necessary to avoid any disturbances and harm to the native populations. In natural conditions, chlorophyll a fluorescence-derived parameters have been shown to be reliable indicators of the physiological state of rare plant populations [ 6 , 17 , 18 , 19 , 20 ]. However, to understand a possible degree of generalizability of such results, it is necessary to point out that (i) the results cannot be easily compared between different genotypes and sites with different sets of environmental conditions, (ii) the growth and physiological indices do not always correlate tightly, and (iii) changes in various chlorophyll a fluorescence parameters may have different physiological meaning.…”

Section: Discussionmentioning

confidence: 99%

“…Chlorophyll a fluorescence measurement allows the non-destructive assessment of different functional and adaptation-oriented aspects of the photochemistry of photosynthesis, and it is often used for studies with rare and endangered plant species [ 7 , 8 , 16 ]. Most importantly, successful attempts have been made to correlate various fluorescence-derived aspects of the photochemistry of photosynthesis with the physiological performance of rare plant species in native conditions [ 6 , 17 , 18 , 19 , 20 ]. A comparison of the physiological fitness of individuals from different populations by means of chlorophyll a fluorescence analysis may provide valuable information on the putative viability of respective populations useful for conservation purposes.…”

Section: Introductionmentioning

confidence: 99%

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Ecophysiology of Endangered Plant Species Saussurea esthonica: Effect of Mineral Nutrient Availability and Soil Moisture

Gailīte

Andersone-Ozola

Samsone

et al. 2023

Plants

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Saussurea esthonica is an endangered plant species typical for wet inland habitats such as calcareous fens. Due to its limited population size and distribution, non-invasive sampling of is important in the research of S. esthonica. The aim of the present study was to assess the effect of mineral nutrient availability and substrate moisture on the growth, physiological status, and mineral nutrition of S. esthonica. The non-destructive measurement of physiological parameters was performed in native habitats during three vegetative seasons, followed by two experiments in controlled conditions. Soil at the two Estonian sites had a relatively larger similarity in the composition of plant-available mineral nutrients in comparison to the two Latvian sites. The chlorophyll a fluorescence parameter Performance Index correlated with the total precipitation in the respective month before measurement, but no significant relationship with other environmental variables was found. For mineral nutrient experiments, plants were grown in four substrates with different mineral nutrient composition, resembling that of soil at different S. esthonica sites. Plant growth and physiological indices were significantly affected by the mineral composition of the substrate. Differences in leaf and root mineral nutrient concentrations of S. esthonica plants in part reflected differences in substrate mineral concentration. To evaluate the effect of soil moisture on growth and photosynthesis-associated parameters of S. esthonica, plants were cultivated in “Pope+” substrate at four different moisture treatments (dry, normal, wet, and waterlodged). The most intense growth of S. esthonica plants was evident in waterlodged conditions, which decreased with a decrease in soil moisture. The biomass of leaves increased by 106% and that of the roots increased by 72% as soil moisture increased from dry to normal. For waterlodged plants, leaf biomass increased by 263% and root biomass increased by 566%, in comparison to that for plants cultivated in dry substrate. Substrate drying had a more negative effect on the growth of S. esthonica plants in comparison to that of waterlodging, and this can be directly linked to prevalent hydrological conditions of an alkaline fen habitat native to the species. Therefore, the preservation of the natural water regime in natural habitats is critical to the conservation of the species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ecophysiology of Endangered Plant Species Saussurea esthonica: Effect of Mineral Nutrient Availability and Soil Moisture

Gailīte

Andersone-Ozola

Samsone

et al. 2023

Plants

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“…In addition, prolonged summer drought decreases seed germination and seedling recruitment (Waud et al, 2017). Increased herbivory by rodents and rabbits has also been observed during lengthy periods of drought, resulting in increased mortality of pseudobulbs (Dokane et al, 2018) and decreased fruit and seed production (Van Landuyt et al, 2014). In the case of var.…”

Section: Response To Environmentmentioning

confidence: 99%

Biological Flora of Britain and Ireland: Liparis loeselii

Jacquemyn

Pankhurst²,

Jones

et al. 2023

Journal of Ecology

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This account presents information on all aspects of the biology of Liparis loeselii (L.) Rich. (Fen Orchid) that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of Britain and Ireland: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, floral and seed characters, herbivores and disease, and history and conservation. Liparis loeselii is a small terrestrial orchid that has a circumboreal distribution and is widespread in Europe and North America. Despite its wide distribution, the species is locally rare and has declined considerably in most of its range. In Britain, the species has a disjunct distribution and is now known to occur consistently at only six sites in eastern England and three in south Wales. It is absent from Ireland. Its most characteristic habitats in Britain are inland fens and coastal dune slacks, but outside Britain it can also be found in wet meadows, marshes, forested seep springs, at lake borders or on mats of floating peat. Populations of Liparis loeselii in dune slacks tend to be short‐lived, and can rapidly increase in size or decrease and disappear as environmental conditions change. The species does not tolerate high nutrient concentrations or low pH. It is susceptible to drought, which reduces seed germination, seedling recruitment and adult survival. Heavy predation by rabbits and rodents has been observed under drought conditions. Liparis loeselii reproduces both by sexual reproduction, and by vegetative propagation through the production of pseudobulbs. Although flowers are accessible to insects, entomophilous pollination is unusual, and most sexual reproduction is the result of selfing. Fruits ripen late in the growing season (mid‐October) and the dust‐like seeds are dispersed during winter by wind and water. Germination occurs during the following growing season and is supported by a wide variety of mycorrhizal fungi. Since the late 19th century Liparis loeselii has declined considerably in Britain and elsewhere in Europe, primarily due to habitat destruction and loss, natural succession, and habitat desiccation due to drainage. As a result, the species has been listed as endangered in the Bern Convention and the European Habitat Directive (92/43/EEC) and is the focus of intensive conservation efforts in many countries. Restoration of habitat by mowing, extensive grazing and peat removal, and the creation of new habitat by dune slack formation in dune systems and peat removal in fens may prolong population persistence and promote establishment of new populations.

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“…Understanding the temporal patterns of vegetation can be useful in detecting the dynamics of habitats for elaborating effective conservation actions (Lelli et al 2018;Tardella et al 2018). Ecological features and dynamics of habitats can also have a significant effect on the distribution and survival of target species Dokane et al 2018).…”

Section: Main Topicsmentioning

confidence: 99%

Introduction: Vegetation science and the habitats directive: approaches and methodologies of a never-ending story

Attorre

Pignatti

Spada

et al. 2018

Rend. Fis. Acc. Lincei

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Rendiconti Lincei has dedicated a Special Issue to present a number of case studies highlighting the role played by the European Vegetation Survey Working Group established by Sandro Pignatti and his colleagues in support to the implementation of the Habitats Directive. Studies include theoretical analyses as well as researches conducted at different spatial and temporal scales focused on the assessment and monitoring of the conservation status of habitats and target plant species, identification of new habitats and subtypes, and their diagnostic species.

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Effect of environmental factors on chlorophyll a fluorescence of the fen orchid Liparis loeselii in European Union priority protected habitat 7210* Calcareous fens with Cladium mariscus and species of the Caricion davallianae

Cited by 4 publications

References 19 publications

Ecophysiology of Endangered Plant Species Saussurea esthonica: Effect of Mineral Nutrient Availability and Soil Moisture

Ecophysiology of Endangered Plant Species Saussurea esthonica: Effect of Mineral Nutrient Availability and Soil Moisture

Biological Flora of Britain and Ireland: Liparis loeselii

Introduction: Vegetation science and the habitats directive: approaches and methodologies of a never-ending story

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