PL
 |
EN
Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 14

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
A first ecological evaluation of the diatom flora in Central Europe: species diversity, selective human interactions and the need for habitat protection
100%
Lange-Bertalot H.
Oceanological Studies
|
1998
|
tom Vol. 27, No. 2
5-12
EN
The recently revised check-list of diatoms found in Germany contains 1437 taxa (1632 taxa have been recorded for Central Europe). Clear correlations with ecological conditions were established for 1000 taxa (70% of 1437). 267 predominantly marine taxa also occur in inland waters; they penetrate progressively into rivers contaminated with industrial waste waters. 61 taxa are aerophilic and 164 eutraphentic, 91 tolerant to all trophic conditions. Very few species in these ecological groupings are endangered. However, at last 417 oligo- or slightly mesotraphentic taxa are included in the "Red List". This strongly indicates that conserving oligo- and dystrophic waters as well as lower mesotrophic habitats can best protect species diversity.
2
A first ecological evaluation of the diatom flora in Central Europe: species diversity, selective human interactions and the need for habitat protection
100%
Lange-Bertalot H.
Oceanological Studies
|
1998
|
tom 27
|
nr 2
3
On the occasion of Dr. Kurt Krammer's 85th birthday
63%
Lange-Bertalot H. , Metzeltin D.
Polish Botanical Journal
|
2010
|
tom 55
|
nr 1
5-26
4
Four small-celled Planothidium species from Central Europe proposed as new to science
63%
Bak M. , Lange-Bertalot H.
Oceanological and Hydrobiological Studies
|
2014
|
tom 43
|
nr 4
5
Content available remote Four small-celled Planothidium species from Central Europe proposed as new to science
63%
Bąk M. , Lange-Bertalot H.
Oceanological and Hydrobiological Studies
|
2014
|
tom Vol. 43, No. 4
346--359
EN
Four small-celled taxa are presented and described — Planothidium werumianum, P. pumilum, P. rhombiculum and P. rostratoholarcticum. Planothidium werumianum, P. pumilum and P. rhombiculum are proposed as new to science and P. rostratoholarcticum as a new name for Achnanthes lanceolata var. rostrata Hustedt 1911. The latter, coming from Germany, is transferred to Planothidium in the species rank. The new name — P. rostratoholarcticum — is necessary to avoid a junior homonym, i.e., Planothidium rostratum (Østrup) Lange-Bertalot 1999, a species described from tropical Thailand. The new taxa were compared to several other, more or less similar small-celled Planothidium spp., such as P. rostratum (Østrup) Lange-Bertalot, P. minutissimum (Krasske) Lange-Bertalot, P. granum (Hohn & Hellerman) Lange-Bertalot, P. daui (Foged) Lange-Bertalot, P. frequentissimum (Lange-Bertalot) Lange-Bertalot and P. engelbrechtii (Cholnoky) Round & Bukhtiyarova. Significant differences could be found through light- and electron microscopic fine structure analysis. Planothidium pumilum and P. rostratoholarcticum occur mainly in eutrophic alkaline rivers and lakes with medium to high conductivity, likewise in estuaries, lagoons, and backwater of the North Sea and the Baltic Sea. Planothidium werumianum and P. rhombiculum were found in small carbonate-rich rivers originating from medium altitude mountains.
6
Crucicostulifera, a new diatom genus described from the Magaliesburg Mts, South Africa
63%
Taylor J. , Lange-Bertalot H.
Polish Botanical Journal
|
2010
|
tom 55
|
nr 1
43-48
7
Nupela matrioschka sp. nov., Nupela thurstonensis comb. nov. and Nupela neogracillima comb. and nom. nov., (Bacillariophyceae): critical analysis of their morphology
51%
Kulikovskiy M. , Lange-Bertalot H. , Witkowski A.
|
|
nr 1
EN
Light and electron microscopic observations of the diatom flora from the Polistovo-Lovatsky Sphagnum bogs (Russia, Novgorod region) revealed the occurrence of an unknown species comparable to Navicula thurstonensis Kaczmarska, a taxon described from Hawaii. Nupela matrioschka is described here as a species new to science, based on its valve morphology typical for the genus Nupela Vyverman & Compere. The major features conforming to Nupela are the ultrastructure of the raphe system and areolae. We propose formal transfer of Navicula thurstonensis to Nupela as N. thurstonensis (Kaczmarska) Kulikovskiy, Lange-Bertalot & Witkowski comb. nov. Both species are compared to similar taxa belonging to Nupela described from temperate climate zones. Also proposed is transfer of Achnanthes gracillima Hustedt to Nupela. Since the epithet gracillima is not available due to the priority of Nupela gracillima (Hustedt) Lange-Bertalot 1993, we propose as a necessary new name Nupela neogracillima (Hustedt) Kulikowskiy & Lange-Bertalot comb. nov., nom. Nov.
8
Eunotia [Bacillariophyta] in the Holarctic: new species from the Russian Arctic
51%
Kulikovskiy M. , Lange-Bertalot H. , Genkal S. , Witkowski A.
Polish Botanical Journal
|
2010
|
tom 55
|
nr 1
93-106
9
Diatom taxa of unusual frustule structure belonging to the genus Fragilaria
51%
Witkowski A. , Lange-Bertalot H. , Witak M.
Fragmenta Floristica et Geobotanica
|
1995
|
tom 40
|
nr 2
10
Content available remote Diatoma polonica sp. nov. : a new diatom (Bacillariophyceae) species from rivers and streams of southern Poland
45%
Bąk M. , Lange-Bertalot H. , Nosek J. , Jakubowska Z. , Kiełbasa M.
Oceanological and Hydrobiological Studies
|
2014
|
tom Vol. 43, No. 2
114--122
EN
Diatoma polonica, a species first observed in samples from the Western Carpathians river systems in southern Poland, is described as a species new to science. The new species status resulted from the fact that the dimensions of cells found did not fit any of the diagnoses given in the literature for the European Diatoma taxa established so far. The genus is rather species-poor, even when the entire Holarctic flora is taken into account. The new species is morphologically closest to Diatoma moniliformis Kützing, particularly with respect to the vague resemblance of the valve outlines and the presence of a rimportula in each valve pole. Further, more or less similar taxa are D. tenuis Agardh, D. problematica Lange-Bertalot and D. mesodon (Ehrenberg) Kützing, all distinguished, in addition to other specific characteristics, by the rimoportulae regularly present at only one valve pole. Characteristics of D. polonica are described and compared with those of other species based on light and scanning electron microscopy.
11
Diatoma polonica sp. nov. – a new diatom (Bacillariophyceae) species from rivers and streams of Southern Poland
45%
Bak M. , Lange-Bertalot H. , Nosek J. , Jakubowska Z. , Kielbasa M.
Oceanological and Hydrobiological Studies
|
2014
|
tom 43
|
nr 2
12
Achnanthidium chitrakootense spec. nov. from rivers of Northern and Central India
45%
Wojtal A. Z. , Lange-Bertalot H. , Nautiyal R. , Verma J. , Nautiyal P.
Polish Botanical Journal
|
2010
|
tom 55
|
nr 1
55-64
13
Diatom flora of San Francisco Bay and vicinity. II. Fogedia krammeri sp. nov.
38%
Witkowski A. , Lange-Bertalot H. , Kociolek J. P. , Kulikovskiy M. , Bak M. , Ruppel M.
Polish Botanical Journal
|
2010
|
tom 55
|
nr 1
49-53
14
Spring phytoplankton and periphyton composition: case study from a thermally abnormal lakes in Western Poland
32%
Burchardt L. , Hindak F. , Komarek J. , Lange-Bertalot H. , Messyasz B. , Pikosz M. , Wejnerowski L. , Jakubas E. , Rybak A. , Gabka M.
Biodiversity: Research and Conservation
|
2014
|
tom 36
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.