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    Tytuł:
    Reproductive effort as an element of life strategy of Lythrum salicaria L. populations
    Wysilek reprodukcyjny jako element strategii zyciowej populacji Lythrum salicaria L.
    Autorzy:
    Czarnecka, B
    Franczak, M.
    Nowak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/28186.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    purple loosestrife
    meadow
    Lythrum salicaria
    reproductive effort
    clonal plant
    life strategy
    population
    biomass allocation
    Opis:
    The aim of the study was to compare some life strategy traits of individuals of Purple Loosestrife Lythrum salicaria within three meadow populations existing under various habitat conditions. The study attempted to answer the following questions: Do different habitat conditions affect the biomass allocation between particular organs of individuals? Can the individuals belonging to different populations of the same species realise their own unique reproductive strategy, in other words, can their reproductive effort represent various levels? In the case of L. salicaria the reproductive effort, measured by the participation of inflorescence biomass in the biomass of aboveground parts of genets, exhibits similar values (14.2-15.1%) in all the study populations, despite their habitat conditions. This fact proves that at the population level, the reproductive effort is relatively stable. Great differences are visible in the case of particular individuals within each of the populations. Specific genets in a population, depending on the habitat microstructure and the biotic relations with other individuals both of their own and other species, may realise their own reproductive strategies, being a part of their life strategies.
    Celem badań było porównanie wybranych cech strategii życiowej osobników krwawnicy pospolitej Lythrum salicaria w trzech populacjach łąkowych, bytujących w zróżnicowanych warunkach siedliskowych. Poszukiwano odpowiedzi na następujące pytania: Czy odmienne warunki środowiskowe wpływają na sposób podziału materii między poszczególne organy? Czy osobniki różnych populacji tego samego gatunku mogą realizować własną strategię reprodukcyjną tzn., czy ich wysiłek reprodukcyjny może kształtować się na zróżnicowanym poziomie? U L. salicaria wysiłek reprodukcyjny mierzony udziałem biomasy kwiatostanów w biomasie części nadziemnych genetów przyjmuje zbliżone wartości (14,2-15,1%) we wszystkich badanych populacjach, niezależnie od warunków środowiskowych. Dowodzi to, że wysiłek reprodukcyjny na poziomie populacji jest wartością względnie stałą. Natomiast poszczególne osobniki w każdej z badanych populacji, w zależności od mikrostruktury siedliska i oddziaływań biotycznych z innymi osobnikami własnego, jak i innych gatunków, mogą realizować własną strategię reprodukcyjną będącą częścią ich strategii życiowej.
    Źródło:
    Acta Agrobotanica; 2007, 60, 2
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biomass dynamics in young silver birch stands on post-agricultural lands in Central Poland
    Autorzy:
    Zasada, M.
    Bijak, S.
    Bronisz, K.
    Bronisz, A.
    Gaweda, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/52729.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Tematy:
    biomass dynamics
    young tree
    silver birch
    stand
    secondary succession
    afforestation
    biomass allocation
    post-agricultural land
    Central Poland
    Opis:
    The paper analyses the production and allocation of biomass in young, spontaneoussilver birch afforestation occurring on post-agricultural lands in the Mazowszeregion (central Poland). We investigated 114 sample plots of age varying from 1 to 19 years. During the first 15 years after their establishment on abandoned farmland, the naturally regenerated silver birch stands produced on average approximately 75 tons of dry biomass per hectare. The major (50–70%) part of this biomass was stored in the tree stems and this share increased with age. The fractions of biomass in the foliage and roots decreased over time, while the share of biomass in the branches remained rather constant. The significant age-dependency of the allometric relationships suggested the need to use age-sensitive biomass expansion factors to estimate the biomass from the stem volume.
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 192
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Alokacja nadziemnej biomasy u sosen zajmujących różne pozycje biosocjalne w drzewostanie
    Aboveground biomass allocation in Scots pines of different biosocial positions in the stand
    Autorzy:
    Ochał, W.
    Grabczyński, S.
    Orzeł, S.
    Wertz, B.
    Socha, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/991636.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    pozycja biosocjalna drzew
    sosna zwyczajna
    Pinus sylvestris
    biomasa nadziemna
    alokacja biomasy
    scots pine
    aboveground biomass
    biomass allocation
    biosocial class
    Opis:
    The aim of this study was to assess the impact of the biosocial position occupied by the tree on the amount and structure of the biomass produced. The empirical material was measurements of biomass for 63 pines (21 for each of the I, II, and III Kraft classes). The total aboveground biomass of the trees was calculated as sum of following fractions: stem wood, stem bark, living branches, dead branches, shoots, needles and cones. It has been found that with a decrease of biosocial position of tree the share of a stem increases while share of branches in the overall biomass of the tree decreases. On the other hand biosocial position does not affect significantly the share of needles, dead branches and cones.
    Źródło:
    Sylwan; 2013, 157, 10; 737-746
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of Puccinia komarovii Tranzsch. infection on characters of Impatiens parviflora Dc. in Galio Sylvatici-Carpinetum [R. Tx. 1937] Oberd. 1957 forest association
    Autorzy:
    Piskorz, R
    Klimko, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/58855.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    Puccinia komarovii
    infection
    Impatiens parviflora
    Galio Sylvatici-Carpinetum class
    forest association
    oak-hornbeam forest
    plant disease
    biomass allocation
    host-pathogen interaction
    Opis:
    The aim of the present study was to determine how internal diversity of oak-hornbeam forest modifies the course and effects of infestation of small-flowered balsam (Impatiens parviflora) with rust Puccinia komarovii. The study investigated the effect of the disease on the demography of the population, and the habit and biomass allocation of the infested specimens, as well as the initiation of non-specific defense mechanisms. It was shown that: 1) the percentage of infected specimens was independent of the undergrowth-coverage rate and of the I. parviflora density; 2) infected populations differ from healthy ones in the seasonal dynamics of abundance changes; 3) high mortality is observed as early as May and the first part of June, i.e. it pertains to specimens, which did not begin reproduction; 4) the presence of infection and its intensity stimulate the growth of the stem and the hypocotyl; 5) fresh weight of infected specimens is by almost 30% lower in comparison to the weight of uninfected plants; the weight of badly infected plants decreases by 20% in comparison to the less severely infected balsam plants; the weight of generative organs drops most significantly, even by over 50%; 6) biomass allocation does not fluctuate considerably; 7) reproduction effort expressed by the ratio of the weight of fruits (or only seeds) to the total biomass shows a distinct downward trend; 8) the environmental factor does not affect the force of defense mechanisms, the strength of biochemical response of diseased plants depends on the degree of their infestation.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2006, 75, 1; 51-59
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fine roots biomass and morphology in a chronosequence of young Pinus sylvestris stands growing on a reclaimed lignite mine spoil heap
    Autorzy:
    Jagodzinski, A.M.
    Kalucka, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/2130192.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    root
    biomass allocation
    morphology
    chronosequence
    young plant
    Pinus sylvestris
    Scotch pine
    stand
    growing
    reclaimed area
    post-industrial area
    mine dump
    lignite mine
    spoil heap
    Opis:
    The morphology of fine roots ( 2 mm diameter) as well as fine and coarse root biomass was investigated in a chronosequence consisting of 6-, 9-, 11-, 15-, 17- and 20-year-old Scots pine (Pinus sylvestris) stands growing on a reclaimed lignite mine spoil heap. Core method of destructive root sampling was used to establish whether root morphology and biomass varied with stand age in the upper 20 cm of soil. Fine root biomass ranged from 0.78 to 3.11 Mg ha-1, coarse root biomass ranged from 0.82 to 2.74 Mg ha-1, whereas root necromass ranged from 1.03 Mg ha-1 to 2.87 Mg ha-1 in the chronosequence studied. Fine root diameter as well as length, projected area, and surface area expressed per unit area increased significantly with stand age. Moreover, our study revealed that when stand age increases, specific fine root biomass increases, whereas specific root length and area decreases. The results support our hypothesis that stand age has an effect on standing fine root biomass and morphology.
    Źródło:
    Dendrobiology; 2010, 64; 19-30
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ekofizjologia jodły pospolitej (Abies alba Mill.) w młodym wieku Synteza wyników badań
    Ecophysiology of silver fir [Abies alba Mill.] at the young age. Synthesis of study
    Autorzy:
    Robakowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/972850.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    jodla pospolita
    reakcja na temperature
    przystosowanie do srodowiska
    sadzonki
    Abies alba
    reakcja na swiatlo
    lesnictwo
    ekofizjologia
    drzewa lesne
    nitrogen allocation
    biomass allocation
    chlorophyll a fluorescence
    photosynthesis
    phenotypic
    plasticity
    light
    temperature
    Albies alba
    Opis:
    This article is the synthesis of the study on the ecophysiology of silver fir (Abies alba Mill.) conducted from 1998 to 2004. Seedlings of silver fir originating from different provenances were used for the experiments in a climate chamber, a nursery and in natural conditions. One of the most important results of this study was the parameterization of the model of silver fir photosynthesis. It was also found that phenotypic plasticity of some morphological and physiological patterns of silver fir at the young age was lower than that of the other tree species and depended on seedlings origin.
    Źródło:
    Sylwan; 2006, 150, 04; 44-52
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Produktywność biomasy nadziemnej i podziemnej w doświadczeniu proweniencyjno-rodowym z dębem szypułkowym
    Productiviy of aboveground and belowground biomass in an experiment with provenances and half-sib families of pedunculate oak
    Autorzy:
    Chmura, D.J.
    Guzicka, M.
    Rożkowski, R.
    Michałowicz, D.
    Grodzicki, W.
    Chałupka, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/991353.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany debowe
    biomasa nadziemna
    biomasa podziemna
    akumulacja
    alokacja biomasy
    drzewa lesne
    dab szypulkowy
    Quercus robur
    rownania allometryczne
    rody hodowlane
    doswiadczenia proweniencyjne
    allometry
    biomass allocation
    heritability
    quercus robur
    Opis:
    The biomass productivity of individual trees at age 14 years was investigated in the experiment with 8 provenances and 186 half−sib families of pedunculate oak (Quercus robur L.). The aim of the study was to develop allometric equations and estimate heritability of tree biomass. We sampled 28 model trees and measured dry mass of their components, including roots (on 14 trees). A decreasing share of aboveground biomass was allocated to stems, and an increasing share to branches and foliage with increasing tree size. Also a decreasing share of total tree biomass was found in roots with increasing tree dimensions. Allometric equations involving diameter at breast height in combination with tree height were developed to model biomass of all components and whole tree. We used those equations to estimate tree biomass on the subset of research area, involving all provenances and 180 half−sib families. Heritability coefficients for tree biomass were the greatest for provenances (0.84), average for families (0.58) and the lowest for individual trees (0.18). However, estimates of family heritability varied by provenance (from 0.18 to 0.74). These findings suggest that the most efficient strategy for improvement of productivity in pedunculate oak would be selection of provenances and families within provenances.
    Źródło:
    Sylwan; 2014, 158, 11; 829-839
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ekologiczne konsekwencje hodowli drzew w różnym zagęszczeniu II. Produkcja i alokacja biomasy, retencja biogenów
    Ecological consequences of silviculture at variable stand densities. II. Biomass production and allocation, nutrient retention
    Autorzy:
    Jagodziński, A.M.
    Oleksyn, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1011811.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    wiezba drzew
    zageszczenie poczatkowe
    mikroelementy
    lesnictwo
    skladniki pokarmowe
    ekologia lasu
    makroelementy
    zageszczenie roslin
    dostepnosc skladnikow pokarmowych
    wymiana gazowa
    drzewostany
    biomasa
    alokacja biomasy
    stand density
    spacing
    tree competition
    forest ecology
    biomass allocation
    nutrient retention
    review
    Opis:
    The main goal of this review was to characterize ecological consequences of growing trees at variable stand densities. Increasing stand density results in rising competition among trees in their below− and above− ground parts, leads to changes in stand structure (DBH, height, crown width and length, crown ratio, tree slenderness, branch diameters and length) and thus modifies biomass partitioning and may influence stand productivity. Trees grown at higher density compete more intensely for limited resources such as space, light, water and nutrients, than in those grown at wider spacing. In general, total tree biomass accumulation is higher in more dense stands and in less dense stands a higher proportion of biomass is allocated to coarse roots. Moreover, stand density may alter foliage distribution within the crowns. For stands grown at higher tree density, leaf area index (LAI) may increase and thus influence stand productivity, however LAI is closely related to light requirements and succession status of the species. Because stand density may simultaneously modify macro− and micronutrient concentration in different tree tissues and biomass partitioning, it may lead to distinct changes in the nutrient balance of the forest ecosystem. For example, a considerable pool of stand mineral elements (including carbon) is allocated to roots that are not subjected to traditional stand management. Therefore, manipulation of stand density leading to higher biomass allocation to roots may increase carbon sequestration in forest ecosystems.
    Źródło:
    Sylwan; 2009, 153, 03; 147-157
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aboveground biomass allocation and accumulation in a chronosequence of young Pinus sylvestris stands growing on a lignite mine spoil heap
    Autorzy:
    Jagodzinski, A.M.
    Kalucka, I.
    Horodecki, P.
    Oleksyn, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/41764.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    aboveground biomass
    allocation
    accumulation
    chronosequence
    age
    young plant
    Pinus sylvestris
    stand
    lignite mine
    spoil heap
    Opis:
    It is not clear to what extent trees growing on anthropogenic sites change their growth and biomass allocation to different organs. We assessed the aboveground biomass in a chronosequence of six Scots pine monocultures (between 6 and 20 years old) to examine how precisely the site-specific or control allometric equations may reflect the value of biomass accumulation and allocation in stands growing in harsh site conditions on the overlayer spoil heap made as a result of opencast brown coal mining. The site is characterized by poor edaphic and water conditions and nutrient deficiency. The control equations were developed from Scots pine stands growing on post-agricultural lands in the close vicinity of the spoil heap. We found that equation type significantly influenced results of predicted biomass accumulation for all biomass components studied (although results were only marginally significant for total aboveground biomass, P=0.08). Total aboveground biomass in younger stands (6–9 years old) estimated using site-specific equations was >40% higher and for older stands (17–20 years old) from 7 to 27% lower than estimated using equations developed for the control sites. Our study revealed that under harsh environmental conditions in spoil heaps, biomass of young Scots pine stands significantly differ from values calculated based on control equations developed for more fertile soils with better water conditions in the same region. The control biomass equations may not be suitable to estimate biomass accumulation in stands growing on infertile habitats with poor water conditions, if the control equations are developed for nearby stands but growing under better site conditions.
    Źródło:
    Dendrobiology; 2014, 72
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biomass allocation to anchoring structures in the aquatic macrophytes from the subcontinental and Atlantic climates in Europe
    Autorzy:
    Szmeja, J
    Clement, B.
    Bociag, K.
    Galka, A.
    Skurzynski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/56563.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    aquatic macrophyte
    aquatic plant
    plant ecology
    biomass
    climate
    anchoring structure
    inland macrophyte
    Atlantic climate
    macrophyte
    botany
    allocation
    Europe
    subcontinental climate
    Opis:
    Biomass allocation to anchoring structures in 10 species of aquatic macrophytes in two types of the cool and humid temperate climate in Europe, subcontionental (NW Poland) and Atlantic (W France), was examined. The study focused on the weight of anchoring organs in Chara delicatula Ag., Ch. fragilis Desv., Juncus bulbosus L., Littorella uniflora (L.) Asch., Luronium natans (L.) Raf., Potamogeton pectinatus L., P. perfoliatus L., P. natans L. and Ranunculus fluitans (Lam.) Wimm., as well as submerged structures in Hydrocharis morsus-ranae L. The plants were collected from 10 geographically distant lakes and 2 rivers with a current velocity of 0.3-0.5 m s-1. It was assumed that biomass allocation to anchoring structures in rooting macrophytes depends on the time that mechanical forces, which can remove the plants from the occupied area, exert their effect. It was found that, in the Atlantic and subcontinental climates, the ratio between the biomass of underground (or submerged) and above-ground structures (U/A index), calculated for the ramets of Chara fragilis, Hydrocharis morsus-ranae and Ranunculus fluitans, has similar values (p>0.05). Nevertheless, among seven species of Cormophyta, which were anchored in the lake or pond littoral, six (Juncus bulbosus, Littorella uniflora, Luronium natans, Potamogeton pectinatus, P. perfoliatus and P. natans) had higher values of the U/A index in the Atlantic climate than in the subcontinental type (p < 0.05). This can be explained by the lack of ice cover and, consequently, a longer time of wave action than in the subcontinental climate.
    Źródło:
    Acta Societatis Botanicorum Poloniae; 2008, 77, 2
    0001-6977
    2083-9480
    Pojawia się w:
    Acta Societatis Botanicorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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