Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 9

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  species change
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Future in the past: a review of phytoplankton studies conducted in Southern Poland over the past fifty years

100%
Bucka H., Wilk-Wozniak E.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr Suppl.1
2

Zmiany zbiorowisk chwastow upraw okopowych okolic Sieradza i Zdunskiej Woli w ostatnich 16 latach

67%
Warcholinska A. U.
Acta Agrobotanica
|
1993
|
tom 46
|
nr 2
27-53
This article presents the results of research on segetal vegetation of root crop cultivations of the area around Sieradz and Zduńska Wola, carried out in the years 1977 and 1992 (Figure 1). On the basis of 120 phytosociological records, taken in 1977 , 6 associations were distinguished (Tables 1-8): Digitarietum ischaemi, Bilderdykio-Lamietum amplexicaule, Galinsogo-Setarietum, Echino-chloo-Setarietum, Veronico-Setaiietum pumilae, Lamio-Veronicetum politae. According to the repeated listing, conducted in 1992, changes of the above - mentioned associations were stated. The comparison between the present state of the associations of root crop weeds on the area researched and their state of 16 years ago showed their impoverishment (compare Tables 1-9, Figures 2-9).
3

Zmiany roslinnosci segetalnej Rowniny Piotrkowskiej w ostatnich 22 latach. Czesc I. Zbiorowiska chwastow upraw zboz ozimych

67%
Warcholinska A. U.
Acta Agrobotanica
|
1994
|
tom 47
|
nr 1
5-36
This paper presents the results of research in segetal communities of winter cereal cultures of the Piotrków Plain (Figure 1) which took place during the period between 1971 and 1972 and between 1992 and 1993. On the basis of 205 phytosociological records, taken in 103 localities in the years of 1971 and 1972 (Figure 2), 6 associations were distinguished (Tables I-IX): Spergulo-Veronicetum dillenii, Arnoserido-Scleranthetum, Papaveretum argemones, Vicietum tetra- spermae, Aphano-Matricarietum and Caucalido-Scandicetum. According to the repeared listing carried out in the years 1992 and 1993 the changes of the communities of the mentioned items were disclosed. The comparison of the present state of the weed communities of the winter cereal cultures on the researched area with the state of 22 years ago allowed to note that the changes in the analysed agrophytocoenoses are caused by progressive anthropopressure.
4

Zmiany roslinnosci segetalnej Rowniny Piotrkowskiej w ostatnich 22 latach. Cz.III. Zbiorowiska chwastow sciernisk

67%
Warcholinska A. U.
Acta Agrobotanica
|
1994
|
tom 47
|
nr 1
55-65
This paper presents the results of research on changes in weed communities of stubble fields of the Piotrków Plain (see Warcho1ińska, 1994-Figure 1) which took place during the period between 1971 and 1972 and between 1992 and 1993. On the basis of 30 phytosociological records, taken in 24 localities (Figure 1) in the years of 1971 and 1972, 3 associations were distinguished (Tables I-III, see Warcholińska, 1974): Centunculo-Anthoceretum punctati. Hyperico-Spergularietuin rubrae and Herniario-Polycnemetum. According to the repeated listing carried out in the years of 1992 and 1993 the changes in the communities of the above-mentioned items were stated. The comparison of the present state of these communities with their state of 22 years ago allowed to note that the analyzed agrophytocoenoses of stubble fields got impoverished due to progressive anthropopressure (Tables I-IV, Figure 2).
5

Przekształcenia flory roślin naczyniowych Uroczyska Szczawin po 35. latach (Polska Środkowa)

59%
Daraz I., Grzelak P., Zielinska K., Grzelak A.
Acta Botanica Silesiaca
|
2011
|
tom 07
The vascular flora of the Szczawin forest complex was studied from 2007 to 2011. The results were compared to those of a previous study carried out from 1971 to 1976. The Szczawin forest complex is located north-east of Zgierz in central Poland. It contains the Grądy nad Moszczenicą nature reserve, which was established to preserve the oak-hornbeam forests with their rare protected plant species. There have been large changes in the 35 years since the first study. Currently, 307 plant species are found in the area. However, only 68% of the species found in the first study were found again in the second study. Of 22 protected species found in the first study, only 10 were found in the second. The share of alien species has also increased. With regards to native species, the share of non-forest native species has increased.
6

Zachwaszczenie ziemniakow w latach 1970-2000 w Gorzyniu

59%
Pudelko J., Maciejewski T., Rymaszewski J.
Progress in Plant Protection
|
2005
|
tom 45
|
nr 1
392-396
7

Zmiany florystyczne na wylaczonym z produkcji rolniczej polu po jednokrotnym oprysku Roundupem

59%
Jablonski W., Widera M.
Acta Agrobotanica
|
1994
|
tom 47
|
nr 2
5-12
The purpose of experiment conducting on the field, weedy by Agropyron repens (L.) P. B. was established what is the degree of elimination of Agropyron repens plants from experimental plots by single Roundup spraying. The changes of the species composition on the fields with different clover-grass mixtures or with Phacelia tanacaetifolia Benth. were studied as well. The stand tables have been made in the first year of the conducting experiment, to determination the density of weeds, after different agricultural practices. It has been found the great elimination of Agropyron repens (L.) P. B. plants after Roundup spraying and the great density of Echinochloa crus- galli (L.) P. B. plants. It has been found the great density of Chenopodium album L. at VII treatment and Galinsoga parviflora Cav. at III, V, VII and VIII treatments as well (Table 1).
8

Zmiany roslinnosci segetalnej Rowniny Piotrkowskiej w ostatnich 22 latach. Cz.II. Zbiorowiska chwastow upraw lnu i roslin okopowych

59%
Warcholinska A. U.
Acta Agrobotanica
|
1994
|
tom 47
|
nr 1
37-54
This paper presents the results of research on changes in segetal communities of flax and root crop cultures of the Piotrków Plain (see Warcholińska, 1994 - Figure 1) which took place during the period between 1971 and 1972 and between 1992 and 1993. On the basis of 72 phytosociological records, taken in 50 localities (Figures 1,2) in the years of 1971 and 1972, 5 associations were distinguished: one in the flax culture (Table I) - Spergulo-Lolietum remoti and four in the root crop cultures (Tables II-V) - Digitarietum ischaemi, Echinochloo-Setarietum, Galinsogo- Setarietum and Lamio- Veronicetum politae. According to the repeated listing carried out in the years of 1992 and 1993 the changes in the communities of the above - mentioned items were stated. The comparison of the present state of these communities with their state of 22 years ago allowed to note that the changes of the analyzed agrophytocoenoses of flax and root crop cultures are caused by progressive anthropopressure.
9

Sprawcy chorob a zmiany klimatyczne

51%
Korbas M.
Progress in Plant Protection
|
2008
|
tom 48
|
nr 3
771-776
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.