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1

Koszenie lak

100%
Wypior Z.
Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała
|
2005
|
nr 06
13
2

The effect of mowing on next-year predation of grassland bird nests: experimental study

84%
Ejsmond M. J.
Polish Journal of Ecology
|
2008
|
tom 56
|
nr 2
299-307
The effect of mowing on nextyear nest predation was studied in grassland areas on the outskirts of Cracow (south Poland). In 2004 and 2005, nesting success at three sites with two plots each – one unmowed for 2–3 years and one mowed every year – was assessed experimentally with artificial nests baited with two Japanese Quail Coturnix japonica L. eggs. Biomass samples were collected for estimations of the standing crop of vegetation. Mowing was found to be correlated with nest predation pressure on the unmowed plots in two meadows that had greater vegetation cover. At the third site, nest predation and vegetation cover did not differ between the mowed and unmowed plots. All selected sites were classified as Arrhenatherum elatius grassland. Also birds communities of study sites were similar in regard to occurrence of small ground-nesting passerine species: Grasshopper Warbler Locustella naevia Bodd., Reed Bunting Emberiza schoeniclus L., Whinchat Saxicola rubetra L., Yellow Wagtail Motacilla flava L. Artificial nests were destroyed mainly by corvids and only few percent were recognized as destroyed by mammals. The intensity of nest destruction differed greatly between years, probably because Magpies Pica pica L. were less active in 2005.
3

Long-term effects of annual mowing on spatial structure of sedge meadows in vicinity of riparian forests

84%
Kolos A., Prochnicki P.
Polish Journal of Ecology
|
2012
|
tom 60
|
nr 1
Mowing may lead to substantial modification of the spatial structure of phytocenoses and plant populations. An important factor contributing to such modification may be the vicinity of a forest. The aim of this work is to explain how the patterns of the spatial structure of sedge meadows patches change under the influence of annual mowing and how the proximity of a forest affects these changes. The research was conducted in the years 1985–2000 in the south-west part of the Białowieża National Park (NE Poland) Study fields were located in Caricetum acutiformis community, neighbouring ash-alder floodplain forest Fraxino-Alnetum. Three experimental plots and three respective control ones (5 x 5m) were established at the forest boundary (0 m), at a distance of 50 m and 100 m from the forest. Annual mowing conducted for 15 years caused an increase in meadow plants coverage in all mown plots. The spreading of two rush species was also observed – Calamagrostis canescens in patches lying in the distance of 100 m from the forest edge, and Phragmites australis in the ecotonal zone. The most important changes in a spatial distribution of floristic richness were noticed in mown patches located at the greatest distance from the boundary of the forest. Mowing caused strengthening of the mosaic pattern naturally occurring within patches and changed their structure from “coarsegrained” to “fine-grained” one. Permanent management of sedge meadows caused an increase in a spatial diversity in the first 10 years in all patches, irrespective of their location. After 15 years of management a simplification of the spatial structure occurred. The spatial structure of the clonal species population (Lythrum salicaria, Lysimachia vulgaris) was characterized by relative stability only in the first 5 years of mowing and only in the quadrates located far from the forest. Response of plants of unitary type of growth to management was different – annual mowing caused substantial changes in the distribution of Cirsium palustre individuals in the plots located far from the forest while individuals of Cirsium rivulare in the ecotone remained constantly in their locations. It was found that it can be caused by the presence of clump sedges which may have a greater impact on population structure of that species than mowing.
4

Impacts of moving, grazing and edge effect on Orthoptera of submontane grasslands: perspectives for biodiversity protection

84%
Rada S., Mazalova M., Sipos J., Kuras T.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 1
Semi-natural grasslands managed by mowing and grazing are an important part of European landscape. Orthopterans are considered to be an appropriate indicator to assess the impact of agricultural management on grassland ecosystems. We studied effects of mowing, grazing and two kinds of edges on Orthoptera of submontane hay meadows and pastures in the Hrubý Jeseník Mts. (Czech Republic). Using sweep netting and pan trapping, we sampled orthopteran assemblages associated with the farmland managed for at least five years under Czech agri-environmental schemes. In total we collected 2253 individuals of orthopterans representing 14 species. The short-term impacts of mowing and grazing were tested by multivariate ordination analyses. The results indicate that mowing significantly decreased Orthoptera species abundance. Conversely, the response of orthopterans to grazing was not statistically significant and appeared to be species-specific. The abundance of acridid Gomphocerippus rufus increased substantially with grazing, which is in contrast with its negative response to mowing. The negative influence of mowing on grassland inhabitants can be mitigated by lower mowing frequency and by providing temporary uncut refuges. The results of generalized linear models showed significant increase of both species richness and total abundance of Orthoptera towards the baulks. Therefore, the refuges should be established primarily along grass baulks or similar types of permanent grassy edges. As a general rule an effort should be made when managing grasslands to ensure the highest habitat heterogeneity.
5

The expansion of common reed [Phragmites australis [Cav.] Trin. ex Steud.] in the anastomosing river valley after cessation of agriculture use [Narew River valley, NE Poland]

84%
Prochnicki P.
Polish Journal of Ecology
|
2005
|
tom 53
|
nr 3
Results of the survey into expansive growth of the common reed (Phragmites australis (Cav.) Trin. ex Steud.) carried out in the upper Narew River valley (NE Poland) within the whole area of Narew National Park (6810 ha) (NNP) are presented in the paper. The Narew River is an anastomosing river in the part subjected to the analysis and an open swampy bog ecosystem has formed within its valley. Sedge communities and to a lesser degree meadow communities are typical plant communities in the study area. Till the end of the 1970’s, the area was agriculturally used. Since the beginning of the 1980’s when grassland mowing was discontinued, expansion of reed communities has been recorded. The analysis of reed expansion has been based upon data on its range originating from interpretation of aerial NIR photos made in 1987 and 1997. The field survey and analysis of the air photos have shown that the reed expansion rate differs depending on the location in the study area. Assessment showed that in 1987 the total area of the common reed stands equalled 1214.75 ha (18% of the NNP area), and in 1997 – 2300.6 ha (34%). Due to considerable homogeneity of habitat features within the valley and habitat requirements of reed, a basic hypothesis has been put forward that the rate of reed expansion in terms of the increase of reed community area is related to bankline density and length. The material obtained and statistical analysis have confirmed that assumption. Besides, it was mentioned that cessation of mowing sedge grasslands along with a change in character of spring surface flooding also contributed to reed expansion.
6

Effect of mowing on the structure of sedge communities in the Chwiszczej River valley (Białowieża Forest)

67%
Kolos A.
Quaestiones Geographicae
|
2012
|
tom 31
|
nr 3
7

Ocena tempa odrastania gazonowych odmian Lolium perenne L.

67%
Czarnecki Z., Harkot W.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
2003
|
tom 225
289-294
Badania przeprowadzono w latach 1996–1999 w Stacji Dydaktyczno-Badawczej Katedry Łąkarstwa Akademii Rolniczej w Lublinie. Doświadczenie założono metodą bloków losowanych w czterech powtórzeniach na glebie mineralnej lekkiej. Badaniami objęto zarejestrowane polskie odmiany Lolium perenne L.: Gazon, Inka, Niga, Nira i Stadion. Na wszystkich obiektach nawożenie mineralne było jednakowe. W okresie wegetacji w latach pełnego użytkowania przeprowadzano 23–26 koszeń na wysokość 4 cm. Intensywność odrastania odmian określano na podstawie wysokości nadziemnej części roślin przed każdym koszeniem. Badania wykazały, że odmiany Stadion i Inka wyróżniały się wolniejszym tempem odrastania niż odmiany Gazon i Niga.
8

Functional differentiation of Central Apennine grasslands under mowing and grazing disturbance regimes

67%
Catorci A., Ottaviani G., Ballelli S., Cesaretti S.
Polish Journal of Ecology
|
2011
|
tom 59
|
nr 1
This research dealt to two grasslands potentially developing the same vegetation type because sited in the same environmental contest (bioclimate, substratum, soil, slope, altitude) but under diverse management regimes (grazing and mowing) for many decades. The evidenced differentiation between the two pastoral vegetations can be attributed to disturbance type and the statistical functional analysis performed through seven plant traits (prostrate form, early flowering, storage organs, clonal ability, basal meristems, chemical defences and hairs), revealed the distinguishing patterns. Discriminant analysis pointed out typical biological attributes for each disturbance conditions, while from correlation analysis emerged different possible traits combinations which do not follow the previous traits separation. Such outcomes are explainable because both grazing and mowing provoke aboveground phytomass removal, although grazing is a selective pressure, while mowing gives to all the species the same development chances. It is reasonable to conclude that convergent strategies within the two systems are possible and frequent.
9

Na plantacjach truskawek po zbiorach i nie tylko...

51%
Rydzik A.
Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała
|
1997
|
nr 07-08
9
10

Wplyw terminow i sposobow zbioru na plon i zdolnosc kielkowania nasion kupkowki pospolitej i tymotki lakowej

51%
Kaszuba J. W., Ostrowska A.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1996
|
tom 199
129-135
11

Na plantacjach truskawek po zbiorach ... i co dalej

51%
Rydzik A.
Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała
|
2003
|
nr 07-08
8
12

Plantacje truskawek po zbiorach

51%
Rydzik A.
Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała
|
1996
|
nr 07-08
5
13

Porownanie systemow korzeniowych oraz masy nadziemnej kostrzewy trzcinowej, kupkowki pospolitej i stoklosy uniolowatej przy roznej czestosci koszenia

51%
Stuczynska J., Stuczynski M.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1993
|
tom 188
139-142
14

Reakcja odmian kostrzewy trzcinowej na nawozenie azotem i czestotliwosc koszenia

43%
Borowiecki J., Jelinowska A., Magnuszewski T., Pojedyniec M.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1993
|
tom 188
131-137
15

Na ostrzu noza

42%
Zakrzewska A.
Kwietnik
|
2008
|
nr 06
44-46
16

Straty polowe w produkcji siana i kiszonek

34%
Nowak J., Bzowska-Bakalarz M. M., Przystupa W.
Acta Agrophysica. Rozprawy i Monografie
|
2007
|
nr 1[144]
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