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Sows’ longevity - a case study of a native breed

100%

Fojutowska L., Skrzypczak E., Szulc K., Lucinski P.

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

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2018

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tom 57[4]

2

Population dynamics of Liparis loeselii [L.] L.C.Rich. in the nature reserve 'Mielno' - some results from a 8 year study

100%

Bednorz L.

Electronic Journal of Polish Agricultural Universities. Series Biology

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2003

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tom 06

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nr 2

This paper presents some results of a 8 year (1995-2002) observation of Liparis loeselii population in the nature reserve Mielno. The total population numbers as well as generative and vegetative ones differ from year to year. The population grew from 73 in 1995 to 106 in 1997, falling to 29 in 2002. At the same time unfavourable changes in population environment (progressive drainage of the area and expansion of woody plants) have been observed.

3

The extinction of relict locations of Pleurospermum austriacum [L.] Hoffm. on the Malopolska Upland

84%

Broz E., Podgorska M., Przemyski A.

Nature Conservation

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2006

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tom 62

43-52

4

Local warming about 1.3 degree Celsius in alpine meadow has no effect on root vole [Microtus oeconomus L.] population during winter

84%

Sun P., Zhao X., Klein J. A., Wei W.

Polish Journal of Ecology

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2005

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tom 53

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nr 1

The influence of air and soil warming on root vole (Microtus oeconomus L.) population was studied in winter period in top open chambers (OTC) (0.8–1.8 m²) warmed by conical fiberglass material and situated in alpine meadow (3250 m) at Qinghai-Tibet Plateau, China. The OTCs were distributed on an area of 30 × 30 m of experimental warming site; another site of the same area was a control one. The root vole population was investigated on two pairs of sites in “low-grazing” and “high-grazing” (by sheep) parts of the meadow; mark-recapture method was used. The winter-season averaged air and soil temperature inside of the chambers were 1.3°C higher than the temperature outside the chambers. The warming in the chambers had no statistically significant effect on root vole numbers, on average body mass of individual, and on average body mass of males and females. In conclusion, as small as 1.3°C warming of soil and air introduced locally and on small (several m²) scale, in the alpine meadow habitat in winter period, has possibly no effect on root vole numbers and biomass.

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Effect of inoculation on population numbers of Azospirillum bacteria under winter wheat, oat and maize

84%

Swedrzynska D., Sawicka A.

Polish Journal of Environmental Studies

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2001

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tom 10

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nr 1

Changes in the numbers of Azospirillum bacteria were studied in soil under winter wheat, oat and maize crops. The cereal seeds were treated with fungicides and inoculated with Azospirillum brasilense actively fixing dinitrogen. Plants were grown without nitrogen fertiliser and with nitrogen application in the amount of 60 and 120 kg N ha-1 for wheat, 50 and 100 kg N ha-1 for oats and 100 and 200 kg N ha-1 for maize. The population number of bacteria was estimated at different developmental stages of plants. Inoculation of cereals with Azospirillum brasilense bacteria contributed to the increase of their numbers in soil. No significant influence of fungicidal seed dressings on the numbers of Azospirillum bacteria has been noted. The application of mineral nitrogen to the crops was favourable to multiplication of Azospirillum bacteria under plants.

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Możliwości intensyfikacji hodowli kaczki krzyżówki (Anasplatyrhynchos L.) na stawach rybnych

67%

Bonczar Z.

Acta Agraria et Silvestria. Series Zootechnica

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1991

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tom 29

7

Zadrzewienie śródpolne ostoją pająków Araneae w agrocenozie

67%

Topa E., Sadej W., Bubienko K.

Progress in Plant Protection

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2010

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tom 50

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nr 4

During the two years of observations (2008–2009) conducted on the field groves in Bartążek near Olsztyn (UTM 65) a total number of 3 478 spiders belonging to 12 families, 49 genera and 89 species were trapped by using a sweep-net. The most numerous families were Tetragnathidae and Linyphidae, but the riechest in species were Linyphidae (30 species), Araneidae (14 species), Tetragnathidae and Thomisidae (each 9 species). The dominant species was Metellina segmentata and subdominants were Enoplognatha ovata, Pachygnatha listeri, Tetragnatha montana (2008–2009) and Linyphia triangularis in 2009. Also very rare species was found – Philodromus albidus. The observations showed that field groves were very rich source of species diversity of foliage-dwelling spiders, as potential predators of pests in agrocenosis.

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Liczebnosc populacji szkodliwych i pozytecznych roztoczy na roznych odmianach sliwy

67%

Sekrecka M., Olszak R. W.

Progress in Plant Protection

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2008

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tom 48

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nr 1

131-133

9

Variability of weed infestation of winter wheat cultivars in relation to tillage systems

67%

Weber R., Sekutowski T., Owsiak Z.

Progress in Plant Protection

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2014

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tom 54

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nr 2

The aim of this work was the evaluation of winter wheat secondary weed infestation occurring in spring depending on a tillage system and cultivar. The following research parameters were analyzed: factor I – soil tillage system: a) ploughing, b) reduced tillage – cultivating, c) reduced tillage – disc harrow; factor II – winter wheat cultivar: a) Muszelka, b) Ostka Strzelecka, c) Kohelia, d) Satyna. Herbicide Maraton 375 SC was used in autumn at a dose of 4 l/ha. Weed density was evaluated by counting number of weeds in spring, using square-frame method on the 0.25 m2. The sum of all individual weed species was analyzed on every treatment set up in 4 replicates during 3 years of studies. Log-linear analysis showed that during the first years of reduced tillage systems, the number of weed per area was significantly higher than in the conventional tillage system. Muszelka cultivar showed the most variable weed infestation in comparison to other winter wheat cultivars. The dominant weed, regardless of the winter wheat cultivar and tillage systems, was Viola arvensis. Moreover, ploughing or reduced tillage conditions were favorable for Fumaria officinalis. However, reduced tillage system, using disc harrow provided optimal conditions for growth of Lamium purpureum.

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Dynamika populacji mszycy czeremchowo-zbożowej na żywicielu pierwotnym

67%

Krzyzanowski R., Leszczynski B., Gadalinska-Krzyzanowska A.

Progress in Plant Protection

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2010

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tom 50

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nr 2

Occurrence of the bird cherry-oat aphid (Rhopalosiphum padi L.) on bird cherry (Prunus padus L.) was studied in Eastern Poland. First fundatrix of R. padi on P. padus were observed in the first decade of April. The bird cherry-oat aphid population developed on the primary host during May. Its maximum reached the peak density until the middle of May, and in the third decade of May numerous alatae were formed and spring migration of the aphid onto the summer hosts started.

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Pchly [Siphonaptera] gniazd ptakow z terenow zurbanizowanych

67%

Blaski M.

Acta Biologica Silesiana

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1998

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tom 32

84-90

12

Czynniki kształtujące procesy depopolacyjne na obszarach wiejskich Polski północnej

67%

Gwiazdzinska-Goraj M.

Acta Scientiarum Polonorum. Administratio Locorum

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2018

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tom 17

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nr 4

13

Using Corine Land Cover to predict habitats occupied by moose Alces alces

67%

Sawicka E., Klich D.

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

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2019

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tom 58[4]

14

Density-dependent regulatory mechanisms of the generative potency in the males of a bank vole Myodes glareolus

67%

Mamina V., Zhigalsky O.

Acta Theriologica

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2008

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tom 53

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nr 2

Morphological analysis revealed destructive changes in the testicular tissue of bank volesMyodes glareolus Schreber, 1780 during different phases of a population fluctuation. The most pronounced changes were observed at the peak phase, when karyolysis of the Leydig cells and degeneration of spermatogenous cells were recorded in 90% of males. During the increase phase, depression of androgenous testicular function was observed in only 50% of males and atrophy of seminiferous tubules in 30% of males. During the low phase, the proportion of males with destructive changes in generative and endocrine portions of the testicles did not exceed 30%. Morphometrical analysis of spermatozoa demonstrated that the size of the head and nucleus were related to the phase of the population fluctuation. Lengths of the middle and main parts of the spermatozoon tail, as well as the size of the acrosome, were not related to phase of the population fluctuation.

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Prognoza populacji ludności wiejskiej województwa zachodniopomorskiego

59%

Szczecinska B.

Acta Agraria et Silvestria. Series Agraria

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2006

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tom 46

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nr 2

This article presents projection of rural population in Western Pomeranian Voivodeship. Dates analysis shows demographic changes on theese areas during 1999-2004. The research contains also population's migration. The elaboration has an analytical-descriptive character.

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Zagrożenie upraw bobiku [Vicia faba minor] przez mszyce burakową Aphis fabae Scop.

59%

Sadej W.

Acta Academiae Agriculturae ac Technicae Olstenensis. Agricultura

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1996

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tom 63

239-246

W badaniach w latach 1984-1993 w woj. olsztyńskim na bobiku odmiany Nadwiślański stwierdzono dominację mszycy burakowej Aphis fabae Scop. (71.2%). Mszyca grochowa Acyrthosiphum pisum Harris, stanowiła 26.2% populacji mszyc i ze względu na liczebność oraz późny termin pojawu nie stanowiła zagrożenia dla tej rośliny. W okresie badań wystąpiły trzy gradacje Aphis fabae, w trakcie których kolonie tego gatunku opanowywały 56-75% roślin. Liczebność kolonii miała wpływ na cechy morfologiczne roślin bobiku. Istotne okazały się różnice w wysokości roślin i liczbie strąków przy liczebności powyżej 300 osobników na roślinie oraz liczbie nasion i ich masie przy liczebności powyżej 150 osobników na roślinie. Nasilenie tego szkodnika miało więc istotny wpływ na plon nasion bobiku.

17

Monitorowanie zimujących form stawonogów na roślinach z rodziny Rosaceae

59%

Kot I., Golan K.

Progress in Plant Protection

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2009

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tom 49

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nr 1

18

Występowanie i szkodliwość urazka kukurydzianego (Glischrochilus quadrisignatus Say) na kukurydzy w południowo-wschodniej Polsce w latach 2005–2008

59%

Beres P. K.

Progress in Plant Protection

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2009

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tom 49

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nr 1

19

Występowanie zwójki z rodzaju Cnephasia na kapuście

59%

Kotlinski S.

Progress in Plant Protection

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2009

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tom 49

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nr 1

20

Aktywnosc migracyjna populacji kapturnika zbozowca Rhyzopertha dominica F. [Coleoptera, Bostrichidae] w warunkach zasiedlania nowego pokarmu

59%

Klys M.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2006

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tom 515

173-179

Obiekt prezentowanych badań stanowiła populacja kapturnika zbożowca (Rhyzopertha dominica F.), groźnego szkodnika magazynowanego ziarna zbóż i produktów spożywczych. Czynne przemieszczanie się osobników dorosłych tego gatunku po gładkiej powierzchni nie jest możliwe z powodu budowy ich ciała, jednak bardzo sprawnie poruszają się w obrębie pryzm ziarna. Wykazują, podobnie jak populacje innych chrząszczy spichrzowych, dużą aktywność migracyjną. Celem badań laboratoryjnych było zbadanie przebiegu procesu migracji w początkowym okresie zasiedlania ziarna pszenicy przez tego szkodnika. Ocenę aktywności migracyjnej oparto na analizie liczebności populacji oraz wskaźników: migracji, śmiertelności i struktury płciowej. Jako substrat w eksperymentach zastosowano pszenicę - optymalny pokarm dla tego gatunku owada. Badania prowadzono w temperaturze 28°C i RH 60 ±5 %. Stwierdzono, że rozprzestrzenianie się populacji kapturnika zbożowca w warunkach swobodnych migracji dwukierunkowych w początkowym okresie zasiedlania pokarmu prowadzi do szybkiego, równomiernego opanowywania całego dostępnego substratu. Ponadto samice tego gatunku wykazują wyższą aktywność migracyjną. Prowadzi to do rozprzestrzeniania się populacji i atakowania coraz to nowego ziarna zbóż. Stwierdzonej aktywności migracyjnej towarzyszy bardzo niska śmiertelność populacji.

Ograniczanie wyników

Sows’ longevity - a case study of a native breed

Population dynamics of Liparis loeselii [L.] L.C.Rich. in the nature reserve 'Mielno' - some results from a 8 year study

The extinction of relict locations of Pleurospermum austriacum [L.] Hoffm. on the Malopolska Upland

Local warming about 1.3 degree Celsius in alpine meadow has no effect on root vole [Microtus oeconomus L.] population during winter