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Wyświetlanie 1-2 z 2
Tytuł:
Application of DNA markers against illegal logging as a new tool for the Forest Guard Service
Autorzy:
Nowakowska, J.A.
Powiązania:
https://bibliotekanauki.pl/articles/38611.pdf
Data publikacji:
2011
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
application
DNA marker
DNA structure
wood
molecular identification
Forest Guard Service
tree species
determination
DNA profile
polymerase chain reaction
Opis:
DNA markers are currently the most precise tool for forest tree species identification and can be used for comparative analyses of plant material. Molecular diagnosis of evidence and reference material is based on comparing the structure of DNA markers duplicated in the PCR reaction and estimation of the DNA profiles obtained in studied wood samples. For this purpose, the microsatellite DNA markers are the most suitable tool because of their high polymorphism and accurate detection of structural changes in the genome. The analysis of tree stump DNA profiles let avoid timely collection of data such as tree age, diameter, height and thickness, although such a piece of information may advantageous in wood identification process. For each examined tree species, i.e. Pinus sylvestris L., Picea abies (L.) Karst., Quercus robur L. and Q. petraea (Matt.) Liebl., Fagus sylvatica L., Betula pendula L., and Alnus glutinosa L., wood identification was possible via the DNA profiles established on a basis of minimum 4 microsatellite nuclear DNA loci, and at least one cytoplasmatic (mitochondrial or chloroplast) DNA marker. Determination of the DNA profiles provided fast and reliable comparison of genetic similarity between material of evidence (wood, needles, leaves, seeds) and material of reference (tree stumps) in the forest. This was done with high probability (approximately 98– 99%).
Źródło:
Folia Forestalia Polonica. Series A . Forestry; 2011, 53, 2
0071-6677
Pojawia się w:
Folia Forestalia Polonica. Series A . Forestry
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Awifauna lęgowa dojrzałych drzewostanów Puszczy Boreckiej i jej zmiany na przełomie XX i XXI wieku
Breeding avifauna of mature forest stands in the Borki Forest and its dynamics at the turn of the 21st century
Autorzy:
Rakowski, G.
Czarnocki, K.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/1294672.pdf
Data publikacji:
2016
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
lesnictwo
Puszcza Borecka
lasy
fauna
ptaki
gatunki legowe
grupy ekologiczne
zgrupowania zwierzat
bogactwo gatunkowe
zageszczenie zwierzat
wykaz gatunkow
Borki Forest
bird assemblage structure
species richness
density changes
forest habitats
Opis:
The composition and structure of the breeding bird community in the Borki Forest in north-eastern Poland were investigated during two separate periods: 1994–1996 and 2012–2014. Bird censuses were carried out in three plots located in mature oak-hornbeam, ash-alder and mixed coniferous forest stands. A standard combined mapping technique for estimating the number of breeding birds was applied. A total of 74 bird species bred at least once within any plot during 1994–1996 or 2012–2014. The structure of the bird assemblages on particular plots displayed a high degree of similarity, exceeding 75%, which means that they represent essentially the same bird community. However, the investigated assemblages have changed substantially over the 20 years. Both, the number of breeding bird species and the population densities on all plots, were much higher in 2012–2014 than in 1994–1996. The mean number of breeding species on all plots was over 50% higher in 2012–2014 than in 1994–1996, whereas the mean total density of breeding pairs increased by more than 60%. Total population densities on the plots increased as a result of an increase in population densities of individual bird species combined with an increase in the number of breeding species. Due to different rates of population growth for certain species, also the composition of dominating species group have changed. The observed changes in the avifauna of the Borki Forest were most probably due to an enrichment of the forest habitats structure, which was caused by natural factors, such as ageing of forest stands, forest succession and a change in water regime by beaver dams, as well as by forest management, including group felling within or in the vicinity of plots and uncovering of the forest edge.
Źródło:
Leśne Prace Badawcze; 2016, 77, 3
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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