To What Degree Can the Specifics of Occurrence of Glacial Relic Betula humilis Schrank Be an Indicator of Habitat Conditions of Moderate Climate Peatlands?

Serafin, Artur; Urban, Danuta; Bronowicka‐Mielniczuk, Urszula; Szczurowska, Agnieszka

doi:10.3390/w10081062

Cited by 9 publications

(22 citation statements)

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“…The above outcomes allow us to definitively reject the hypothesis that the shrub birch flowering intensity may be related to PO 4 3− concentrations in groundwater and to decisively confirm the remark of Chrzanowska et al (2016). In general, our observations are congruent with those presented by Serafin et al (2018), who revealed that the B. humilis specimens functioned well when the total P concentrations in the water ranged from 0.08 to 0.32 mg l −1 and when PO 4…”

Section: Environmental Conditions Shaping Sexual Reproduction Parameterssupporting

confidence: 86%

Flowering and quality of seeds and pollen in endangered populations of Betula humilis

Bona

Kłosowski

Jadwiszczak

et al. 2021

Trees

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Key message Lowered pollen and seed quality of B. humilis compared to its widespread tree relatives may threaten its populations at the southwestern edge of the species range. Abstract Inability to produce vital propagules is the main threat to the persistence of rare plants at the edges of species distribution. In the present investigation, factors responsible for the low germinability of shrub birch (Betula humilis) seeds in the peripheral populations were analysed. As shrub birch populations are found in phosphorus (P)-limited peatlands with high groundwater levels, the impact of groundwater PO43− ion contents and groundwater table for B. humilis flowering was also studied. Qualities of the B. humilis seeds and pollen were compared to those of tree congeners silver birch (B. pendula) and downy birch (B. pubescens), which usually represent a high reproductive performance. We revealed that the poor germination ability of B. humilis seeds was caused by the high proportions of empty seeds (44.8%) and seeds with partially developed embryos (47.3%). The insufficient numbers of viable seeds may be a consequence of low-quality shrub birch pollen, as only 1.6% of pollen grains sprouted. The germinability of shrub birch pollen was significantly lower than that of Betula tree pollen; thus, there is a risk of pollination of B. humilis female flowers by pollen grains of tree birches. Positive relationships between the P concentrations in seeds and seed germinability were revealed in tree birches, but not in B. humilis. The availability of PO43− ions in the groundwater did not affect B. humilis flowering, but male inflorescences were more numerous in stands with higher groundwater levels. Consequently, the maintenance of peatlands is crucial for the efficient sexual reproduction of shrub birches.

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Section: Environmental Conditions Shaping Sexual Reproduction Parameterssupporting

confidence: 86%

Flowering and quality of seeds and pollen in endangered populations of Betula humilis

Bona

Kłosowski

Jadwiszczak

et al. 2021

Trees

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“…In the case of Salix myrtilloides, low level of values of nitrogen fractions, phosphorus fractions, studied cations, and DOC can be considered a group of conditions favouring For Betula humilis, values of statistically significant, favourable for its occurrence abiotic properties of groundwaters were provided in more detail also providing ranges of their values based on boxplots for which the upper and lower quartile referred to the Kruskal-Wallis test provide information on the range of values of physical-chemical water properties significant for the species. They included: TP: 0.08-0.32; P-PO4: 0.1; TN: 2.2-21.2; N-NH4: 0.1-0.46; DOC: 24.6-56.9 (mg•dm -3 ), as well as higher than average pH values, in a range of: 5.34-5.95; Ca: 5.67-28.1; Mg: 0.56-2.41 (mg•dm -3 ) m and EC in µS•cm -1 : 72.1-142.3 (Serafin et al, 2018a).…”

Section: (The Black Labels Indicate Individual Data Items Each Variable (Factor) Is Represented As a Vector While The Direction And The Lmentioning

confidence: 88%

“…The final selection is usually determined by obtaining interpretable clusters. In the case of research employing the hierarchization procedure, the algorithm of minimum variance (Ward clustering) proved the most efficient for the species composition, as well as the algorithm of complete linkage for habitats (Serafin et al, 2015a(Serafin et al, , 2018a. The obtained results of the classification were presented graphically in the form of a dendrogram (diagram of another connection of objectssites or speciesin clusters together with distances for the connections) or heatmaps (intensity of colour representing among others differences in the frequency of joint occurrence)compare Figure 3.…”

Section: Methodsmentioning

confidence: 99%

“…Figure 2. Dendrogram plot for sites as part of research on the occurrence of Betula humilis onthe Łęczna-Włodawa Lake Distict(Serafin et al, 2018a). M-Moszne, D -Długie, B -Bikcze, DK -Dekowina, L -Lubowierz, K -Karaśne…”

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confidence: 99%

“…Figure 4. Distribution of values of the investigated physical-chemical properties of piezometric groundwater at the study sites in the period 2011-2014 for occurrence of Betula humilis on thePolesie Podlaskie peat bogs(Serafin et al, 2018a). (The box-and-whisker plots show the distribution of observations.…”

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Hierarchization of Abiotic Environmental Properties – Methodical Study for Research on the Ecology of Plants in Peat Bog Habitats

Serafin¹,

Pogorzelec²,

Bronowicka‐Mielniczuk³

2019

Appl. Ecol. Env. Res.

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The objective of this study was to perform the hierarchization procedure of habitat physicalchemical properties of peat bog waters in a five-year research cycle. The identification of important abiotic habitat properties in the context of the analyzed boreal plant relics' occurrence determines the mechanisms of their active protection, and in the case of useful plants with high medicinal valuesthe possibility of their ecological cultivation. The procedure covers desk studies involving source data analysis, field reconnaissance with selection of study sites, botanical-phytosociological analyses, and laboratory analyses of the abiotic properties of the habitat. The complex statistical analysis of the obtained data including descriptive statistics, non-parametric Kruskal-Wallis test, and multidimensional methods permitted the designation of range values for properties favoring the occurrence of the studied plant species. The procedure finds practical applications for both for the active protection of endangered plant species and other useful plants.

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How unnecessarily high abatement costs and unresolved distributional issues undermine nutrient reductions to the Baltic Sea

Andersson

Brady

Pohjola

2021

Ambio

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This paper systematically reviews the literature on how to reduce nutrient emissions to the Baltic Sea cost-effectively and considerations for allocating these costs fairly among countries. The literature shows conclusively that the reduction targets of the Baltic Sea Action Plan (BSAP) could be achieved at considerably lower cost, if countries would cooperate to implement the least costly abatement plan. Focusing on phosphorus abatement could be prudent as the often recommended measures—wastewater treatment and wetlands—abate nitrogen too. An implication of our review is that the potential for restoring the Baltic Sea to good health is undermined by an abatement strategy that is more costly than necessary and likely to be perceived as unfair by several countries. Neither the BSAP nor the cost-effective solution meet the surveyed criteria for fairness, implying a need for side-payments.

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To What Degree Can the Specifics of Occurrence of Glacial Relic Betula humilis Schrank Be an Indicator of Habitat Conditions of Moderate Climate Peatlands?

Cited by 9 publications

References 14 publications

Flowering and quality of seeds and pollen in endangered populations of Betula humilis

Flowering and quality of seeds and pollen in endangered populations of Betula humilis

Hierarchization of Abiotic Environmental Properties – Methodical Study for Research on the Ecology of Plants in Peat Bog Habitats

How unnecessarily high abatement costs and unresolved distributional issues undermine nutrient reductions to the Baltic Sea

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