Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 10

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:  Crimea
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
The Crimean taxon at issue has long been known as Stankiewicz pine with continuing discussion around its taxonomical rank and origin. In 1995, the authors discovered the new isolated population of the taxon on Papayakaya Mt. in Crimean Sub-Mediterranean. Due to hypothetical paleogeographic reconstruction ofPleistocene coastal landscapes here, together with some newest taxonomical data, authors reinforce the notion of relict and infraspecific status of the taxon that should be related to Pinus brutia var. pityusa.
3
84%
Information is provided on Erysiphe platani, a newly invasive fungus in Ukraine. The anamorph of this North American powdery mildew was first recorded in Ukraine in 1986 on Platanus orientalis in the Nikita Botanical Garden (Crimea). Later, it was found in other localities of the Crimean peninsula, and in Odessa and Odessa region on three species of plane, namely P. × hispanica, P. occidentalis and P. orientalis. Spread of the fungus was epiphytotic. This mildew significantly reduces the ornamental value of plane trees, which are often planted in public open spaces within urban areas of southern Ukraine. Recently, E. platani has formed the teleomorph in this region. Morphologically, the Ukrainian material is slightly different from the species description, viz. appendages are longer (up to 3 times the chasmothecial diam.), often with less compact apices.
In order to protect landraces of crop plant and their wild relatives, the National Centre for Plant Genetic Resources in cooperation with others institutions conducted a collecting mission on the Crimea territory in 2005. In total, 250 accessions, mainly old varieties, landraces, fruit trees, medicinal and ornamental plants, spices and wild growing crop plants were collected. During the expedition, accessions were obtained from local farmers, local markets and gathered from the wild. Special attention should be paid to vegetables collected in Tatarian villages and accessions of old varieties of fruit tries, deriving from Tatarian orchards. In Crimea many interesting wild growing species, such as cereals relatives, ornamental plants from many genera (Asphodeline, Dianthus, Muscari, Malva, Stipa), pulses and grasses were also collected.
A specimen of Fusiteuthis polonica, from the basal Maastrichtian of the “Saturn” chalk pit at Kronsmoor in northwest Germany, is described. It came from the uppermost part of the Belemnella lanceolata Zone, ca. 9.5 m above the base of the Maastrichtian as defined on belemnites. Fusiteuthis was very rare, but widely distributed. Single occurrences are known from northwest Germany, Poland and Crimea. It has been recorded only from the lowest and uppermost parts of the Maastrichtian; the longevity of this genus was thus slightly less than 6 myr. Fusiteuthis belongs to the Upper Cretaceous belemnite family Belemnitellidae.
The Crimean Peninsula holds a large number of hypersaline water bodies. Our studies focused on these poorly investigated habitats, and included few brackish and freshwater ponds. Seventeen species were identified, of which only 4(5) were collected from hypersaline waters sometimes with extremely high salinities (Acanthocyclops sp. copepodid, 210 ppt; Eucyclops sp. copepodid, 150 ppt; Diacyclops bisetosus and Cyclops furcifer, 140-150 ppt). We also report on the occurrence of three alien thermophilic species (Eucyclops roseus Ishida, 1997, Mesocyclops isabellae Dussart et Fernando, 1988, and Mesocyclops pehpeiensis Hu, 1943) from the brackish and fresh waters of Crimea. Morphological descriptions, illustrations of the diagnostic characters and comments on relevant taxonomic issues are supplemented with discussion of the putative ways of dispersal of the alien copepods to Crimea. We provisionally reinstate Eucyclops roseus, regarded by others as a subspecies of E. agiloides (G. O. Sars, 1909), and retain the name Acanthocyclops trajarni Mirabdullayev et Defaye, 2002 which was recently synonymized with A. americanus (Marsh, 1893) here considered a nomen dubium. Species accumulation curves based on our and literature data showed that significantly larger sampling efforts could yield a total of 6-8 species in the hypersaline waters and 47-50 species in all types of continental waters of Crimea.
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.