Wyniki wyszukiwania - AGRO

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Hatchability of selected breeds of hens maintained as Polish conservation flocks

100%

Gryzinska M., Batkowska J., Al-Shammari K. I. A., Ambrozkiewicz J., Jezewska-Witkowska G.

Electronic Journal of Polish Agricultural Universities. Series Animal Husbandry

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2015

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tom 18

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nr 2

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The effect of various storage methods on organoleptic quality of bee pollen loads

100%

Siuda M., Wilde J., Bak T.

Journal of Apicultural Science

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2012

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tom 56

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nr 1

3

Conserving patterns of genetic diversity in endangered mammals by captive breeding

100%

Schreiber A., Kolter L., Kaumanns W.

Acta Theriologica. Supplement

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1993

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tom 38

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nr 2

Breeding endangered mammals for their conservation requires knowledge about the genetic architecture of the respective species. In taxa with tight genetic cohesion between populations, the definition of management units for captive breeding rarely poses problems, except if there are morphologically well differentiated subspecies grading into one another although they are hardly separate at the molecular level. Species with genetic diversity predominantly between populations can pose serious problems for breeders. Examples are discussed of mammalian species with complex genetic architectures, where decisions have to be drawn whether to select only certain populations for conservation, or to create an artificial taxon. Research into subspecific molecular taxonomy of rare zoo-living wildlife is frequently hampered by small sample sizes available for study, with the risk of spurious molecular taxonomie distances based on marker allele frequencies in populations influenced by genetic drift. "Typological" approaches are suggested for molecular systematics of such study material, with the haplotype organization of polymorphic MHC genes appearing particularly promising. Additional molecular approaches, not easily susceptible to sample size problems, are shortly presented. The implementation of breeding plans to achieve conservation genetic goals may interfere with the social structures of the animals. This group of problems includes the transfer of socially compatible individuals to form new groups, and the provision of suitable sexual partners for mate choice mechanisms to act in their species-specific manner. A survey of scientific research in European zoos is provided to recognize what is being done to fight the current ignorance about basic aspects of the conservation biology of many endangered mammals.

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Conservation of the endangered medicinal plant Picrorhiza kurroa through in vitro multiple shoot regeneration

86%

Chaudhary V., Singh S., Sharma R., Singh A., Sharma N.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2019

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tom 100

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nr 3

5

Brief historic outline of the preservation and conservation of historic gardens

86%

Kosmala M.

Annals of Warsaw University of Life Sciences - SGGW. Horticulture and Landscape Architecture

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2007

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tom 28

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Last two hundred individuals: rediscovery of Scilla mesopotamica Speta [Hyacinthaceae], a threatened endemic species in Turkey

86%

Eker I., Akan H.

Acta Societatis Botanicorum Poloniae

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2010

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tom 79

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nr 1

31-36

In this paper, the rediscovery of endemic and long missing species, Scilla mesopotamica Speta which had been only known from the type gathering, is given. The species has not been collected again after Sintenis in 1888, whose specimens served Speta for description of the new taxon. In 2004, the authors found it in a steppic rocky area, near Halfeti in Şanliurfa province, South East Anatolia, Turkey. After analyzing Sintenis' original collection notes, they concluded that this area is identical with the type locality. S. mesopotamica has an extremely limited distribution and is represented by less than 200 specimens in the single known population that covers less than 50 m2. Taxonomy of the species, detailed description with illustrations, geographical distribution, habitat, ecology and status of IUCN extinction risk and some comments on conservation of the plant are also presented.

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Genetic diversity of postglacial relict shrub Betula nana revealed by RAPD analysis

86%

Dabrowska G., Dzialuk A., Burnicka O., Ejankowski W., Gugnacka-Fiedor W., Goc A.

Dendrobiology

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2006

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tom 55

19-23

A sample of Betula nana from the Linie reserve near Dąbrowa Chełmińska, have been fingerprinted using random amplified polymorphic DNA (RAPD). The high level of genetic variation was detected. All individuals had unique genotypes, supporting the generally high resolving power of RAPD’s. For the conservation strategy, information about the distribution of the genetic variation within and among populations plays very important role. Thus, extensive study in other populations of dwarf birch is needed.

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Restoration of degraded peatbogs of the Zahorska Nizina Lowland (western Slovakia)

86%

Klementova E., Sibl J.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Inżynieria Środowiska

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2001

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tom 21

Almost at one half of the localities their natural water regime has been substitially changed, at some other localities it has been at least partly changed and only at 2-5 localities the recent state of water regime can be considered more or less natural. 12 localities have been in the past heavily degraded by peat extraction. In spite of the high degree of deterioration, many of the remaining peatbogs can be still considered important for the biodiversity, since they represent important habitats for many rare and threatened plant and animal species. From the restoration measures suggested, the most frequent is the filling (blocking) of drainage ditches (18 localities) and the restoration of the regulated watercourses to increase the ground water tables (13 localities).

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Valsa viburni, a rare fungus in Europe?

86%

Hayova V.

Acta Mycologica

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2013

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tom 48

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nr 2

The paper provides brief illustrated description and general distribution of Valsa viburni. The fungus is found to be highly host-specific and confined to Viburnum lantana. According to currently available data on its distribution, the species has small number of records, fragmented range and is shown to be rare in Europe. However, before assessment of the species, information on any additional unrecorded specimens is needed. On the example of V. viburni, some issues on fungal conservation for species of microfungi are considered.

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Habitat selection by Geoffroy's bats (Myotis emarginatus) in a rural Mediterranean landscape: implications for conservation

86%

Flaquer C., Puig-Montserrat X., Burgas A., Russo D.

Acta Chiropterologica

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2008

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tom 10

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nr 1

Most of the little information available on the foraging ecology of the threatened Geoffroy's bat Myotis emarginatus refers to areas outside the Mediterranean Basin. In this study, we analysed habitat selection by this species in a typical Mediterranean landscape. We radio-tracked a breeding colony (adults and juveniles) in the Iberian Peninsula and analysed habitat selection patterns. Although we confirmed the species' preference for forest, olive groves also appeared an important foraging habitat for both adults and juveniles. Juveniles proved to be less mobile than adults, moving on average 1.6 km less than adults in displacements to foraging sites and preferred more accessible habitats. We highlight here the importance of traditionally managed olive groves as foraging sites for this threatened bat. The ripping-up of ancient olive groves and their replacement by intensively managed cropland, urban areas or shrubland represents a significant threat for this vulnerable species in Mediterranean landscapes.

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Assessmnent of the natural and energy resources utilization in the transportation flow chart of the industrial production

86%

Khlestova O., Berestovoy I.

Teka Komisji Motoryzacji i Energetyki Rolnictwa

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2013

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tom 13

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nr 3

12

Engineering effect of Pinna nobilis shells on benthic communities

86%

Rabaoui L., Belgacem W., Ben Ismail D., Mansour L., Tlig-Zouari S.

Oceanologia

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2015

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tom 57

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nr 3

13

Analysis of stakeholders’ implementation of the National Strategy for sustainable utilisation and conservation of animal genetic resources in Poland

86%

Martyniuk E., Chelminska A., Krupinski J.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2016

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tom 55[2]

Analysis of stakeholders’ implementation of the National Strategy for sustainable utilisation and conservation of animal genetic resources in Poland. The study, based on the customised questionnaire, was aimed at evaluating the contribution of relevant stakeholder groups in the implementation of Strategic Priorities and specific tasks identified in the Action Plan to the National Strategy. The analysis shows that breeders associations and other organizations entrusted with herd book keeping, as well as agricultural universities, are significantly contributing to the implementation of the National Strategy. In addition, significant involvement in implementation was reported by regional authorities (Marshal’s Offices in voivodships) and extension services. Public administration and governmental agencies proved to be heavily engaged in implementation and enforcement of specific areas of the Action Plan.

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Water quality change and habitat potential in riparian ecosystems

86%

Randhir T. O., Ekness P.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 3

15

FAO Commission on Genetic Resources for Food and Agriculture: what it does and how it supports the livestock sector

86%

Polak G., Sosin E., Martyniuk E.

Animal Science and Genetics

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2022

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tom 18

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nr 4

16

Endangered and threatened vascular plants of the forests of Central Poland and the problems of their conservation

86%

Jakubowska-Gabara J.

Nature Conservation

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2001

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tom 58

17

Genetic diversity test of re-established population of Allium angulosum L.

86%

Zeidler M., Curn V.

Polish Journal of Ecology

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2003

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tom 51

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nr 1

The genetic diversity of re-established population of endangered species Allium angulosum L. was tested as a one part of rescue program. Founder individuals were picked in Chropyně - Záříčí area (North Moravia, Czech Republic) and new population was set in Protected Landscape Area Litovelské Pomoravi (North Moravia, Czech Republic). The task was whether the newly founded population was made by representative individuals to cover (include) the genetic variability of source (mother) population. Items were tested with variability assay of six isozyme systems (G-6-PDH, AAT, PGM, EST, ACP, PGI) using discontinuous polyacrylamide gel electrophoresis (PAGE). The method stated relatively sufficient level of variability on condition that new population would be raised to prevent genetic changes. Application of more tests checking the genetic diversity within population could be useful during reintroduction and management of endangered plant species.

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Cervus canadensis and C. elaphus: North American subspecies and evaluation of clinal extremes

86%

Schonewald C.

Acta Theriologica

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1994

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tom 39

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nr 4

The distinctiveness of each extant North American subspecies of C. elaphus (Linnaeus, 1758) was tested using craniometric data. To provide a context for interpretation of these data, the distinctiveness of North American C. elaphus from Eurasian C. elaphus was reassessed from existing data and conclusions tested. Morphometry variations in size, shape, and sexual dimorphism of adult crania were analyzed using combined male-female and independent male and female principal component analyses. North American subspecies do not represent natural biogeogra- phic variation as earlier presumed. Posterior classification error was highest for subspecies, but was lowest for a set of 6 Operational Taxonomic Units that recognized C. elaphus-Olympic, C. e/apftus-northern California and Oregon, C. claphus-eastern Washington, C. elaphus-Rocky mountain and Cascade mountain, C, elaphus-Sas- katchewan and Manitoba, and C. elaphus-centra\ California. Males and females differed in their sizes, shapes and affinities to other populations. Intracontinental differences in the kind and amount of sexual dimorphism reinforced the importance of measuring and contrasting male and female features in phylogeographic analyses. Use of existing nomenclature as a blind guide for comparative systematica and ecology and for conservation undermines the quality of research and conservation for C. elaphus in North America. Previous arguments for a single-species circumgiobal cline do not take into account sexual dimorphism, behavior and reproduction. Major intercontinental differences do exist between clinal extremes in behavior, in cranial size and sexual dimorphism in addition to semilethal Fi hybridization. All suggest C. elaphus and North American Cervus are different species. Whether the transition is smooth, whether stepped transitions occur, and whether "canadensis" correctly represents the species' distribution need verification.

19

Pollination of Polish red list plants: a preliminary statistical survey

86%

Zych M., Jakubiec A.

Acta Agrobotanica

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2008

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tom 61

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nr 1

One of the important problems of modern conservation biology is the lack of reliable data on plant pollination systems, especially for taxa threatened with extinction. This paper is an attempt to collect and analyze the available literature data on pollination of Polish red list plants. The Polish red list includes 469 angiosperm taxa, over 53% of them are insect-pollinated and visited mostly by bees and fl ies, insects that are also declining in Europe. These numbers however are mainly based on lists of fl ower visitors and detailed studies of pollination biology or breeding system are available for less than 20% of the taxa, with further 10% almost completely unstudied in terms of their life histories. The paper indicates that there is an urgent need to study plant-pollinator relationships in order to better conserve the biodiversity in local and global scales.

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The Slender-billed Curlew Numenius tenuirostris: threats and conservation

86%

Gallo-Orsi U., Boere G. C.

Acta Ornithologica

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2001

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tom 36

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nr 1

With a population of probably less than 50 individuals, the Slender-billed Curlew is one of the most seriously endangered species in Europe. The scarcity of information on its biology and the fact that its breeding grounds are still unknown are major constraints on its conservation. This paper presents the activities of the Working Group established under the Bonn Convention. Recent intensive efforts to locate breeding areas are described. All records are kept in a specific BirdLife International database. Although hunting is considered to have been the major reason for the species' dramatic decline and is still an important threat, overgrazing of steppes and drainage of wetlands in northern Kazakhstan and south-western Siberia have canused the loss of a number of possible breeding sites recently identified.

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