Wyniki wyszukiwania

1

Sphagnum-Polytrichum hummocks - a bryologically neglected plant formation

100%

Szweykowski J., Buczkowska K.

Fragmenta Floristica et Geobotanica

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2000

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tom 45

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nr 1-2

2

Different coevolutionary breeding strategies of Ischnoceran lice on Prunella collaris and P. modularis in high mountains

84%

Janiga M.

Polish Journal of Ecology

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2018

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tom 66

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nr 2

Alpine accentors (Prunella collaris) and dunnocks (P. modularis) are closely related species of Prunellidae, which often breed in polygynandrous groups and have specific types of mating behaviour. The alpine accentor lives at high altitudes, in an extreme alpine environment; the dunnock is widely dispersed from lowland to tree line in the mountains. Both species are hosts of the related species of wing lice Philoptersus emiliae and Ph. modularis, respectively. Behavioural differences between these two host species may have resulted in different breeding and seasonal adaptations by their parasites. The main goal of this paper was to test this hypothesis. Sixty five alpine accentors Prunella collaris (Scopoli, 1769) and eighty four dunnocks Prunella modularis (Linnaeus, 1758) were examined for Ischnocera lice in the West Carpathians, Slovakia from 1988 to 2001, and from 2007 to 2010, respectively. Birds were found to be infested with two species of Ischnoceran lice: the parasite species are not competing as they each have their own host Philopterus emiliae Balát, 1955 /P. collaris and Philopterus modularis (Denny, 1842) /P. modularis. Significant differences in abundance and prevalence existed between these two species of lice. High number of Ph. modularis nymphs in the comparison to Ph. emiliae nymphs reflects the different ecological, behavioural and phylogenetic trajectories of their host bird species. This work is the first to assess the louse breeding strategies on two closely related bird species in the high mountain environment.

3

Alder, Alnus incana [L.] Mnch., leaf decomposition in a high mountain stream

84%

Galas J.

Acta Hydrobiologica

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1995

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tom 37

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nr 4

Processing of A. incana leaves was investigated in the Sucha Woda stream (High Tatra Mts, Poland). The leaf litter (about 1 g dry weight) was placed in plastic boxes with netting of three mesh sizes: fine (0.3 mm), medium (1 mm), and coarse (5 mm). Three replicates were collected from the water after 27, 55, 82, 111, and 139 days. The rate of breakdown was much higher for leaves from the coarse mesh boxes (0.014) than for those from the medium (0.0034) and fine (0.0025) mesh boxes.

4

The experience of the complex mapping of the high mountains of the Greater Caucasus

84%

Asoyan D., Belonovskaya E., Popova V., Chernavskaya M., Beryoza E.

Acta Scientiarum Polonorum. Geodesia et Descriptio Terrarum

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2007

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tom 06

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nr 2

5

Altitudinal patterns of vascular plant richness in high mountains: applying of generative additive model

67%

Tu W.-G., Gao X.-F., Wu N., Liu S.-H.

Polish Journal of Ecology

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2010

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tom 58

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nr 2

To explore and describe the species richness patterns along altitudinal, high mountain gradients, two transects – northern exposure (YG) and southern exposure (TD) at Mt. Jiuding (1200–4200 m) in Western China (31º13’– 31º46’N, 103º29’–104º05’E) were selected. They differ from south to north in climate conditions and vegetation zonation, and each transect was sampled according to a uniform method. Every 200 m along the altitudinal gradient we set a sampling belt of 3000 m × 5 m to record the tree species, and 30 plots of 5 m × 5 m within every vegetation belt were used to investigate shrub and herb species. We compared the composition of plant species and calculated the coefficient of similarity between the two transects. A Generalized Additive Model (GAM) was used to describe the richness patterns. For the whole Mt. Jiuding, the richness at all three levels (species, genus and family) showed a monotonically decreasing pattern. As for the different growth forms, richness of the trees, shrubs and pteridophytes showed hump-shaped patterns; and herbs showed a slow decreasing pattern along the altitudinal gradients. In TD transect, the richness of species, genus and family also showed monotonically decreasing patterns; tree richness decreased with the increase of altitude; the shrub richness showed a humpshaped pattern; but pteridophytes and other herbs showed wave-like patterns. In YG transect, altitudinal gradient of richness at different taxonomic levels all showed hump-shaped patterns; and the species richness patterns for different growth forms peaked at middle attitude except for the graminoids and other herbs. The evolutionary history of the vegetation in Mt. Jiuding was quite consistent, and different richness patterns along altitudinal gradients might be resulted from different contemporary ecological conditions. Human disturbance and different range of altitudinal gradients were also important factors for different richness patterns between the two transects. In our study, species in different growth forms showed different altitudinal patterns, but those species with similar requirements to environmental conditions showed similar richness patterns along altitudinal gradients.

6

Invertebrate communities of high mountain lakes (Polish Tatra Mts.)

67%

Galas J.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2004

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tom 01

7

Foraging strategies and dietary preferences of a high mountain ant. [Hymenoptera: Formicidae]

67%

Fernandez-Escudero I., Tinaut A.

Polish Journal of Ecology

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1998

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tom 46

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nr 1

8

Distribution and habitats of Chamorchis alpina [L.] Rich. [Orchidaceae] in Poland

67%

Piekos-Mirkowa H., Mirek Z., Miechowka A.

Acta Societatis Botanicorum Poloniae

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2001

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tom 70

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nr 2

9

Morphological variability of a root vole population in high mountain habitats, Hardangervidda, South Norway

67%

Markowski J., Ostbye E.

Acta Theriologica

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1992

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tom 37

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nr 1-2

The variability of body and skull dimensions was examined in a population of the root vole, Microtus oeconomus (Pallas, 1776) from high mountain habitats, Hardangervidda, southern Norway. Morphometric analysis was made on 530 of 915 specimens obtained over an 8 year trapping period (1970 - 1978), taking into account sex, age class, season and population cycle. Sexual dimorphism was distinct in the oldest age group, in which males were significantly larger than females. The specimens from the peak phase were larger in body and skull dimensions (Chitty Effect). The influence of age structure on fluctuations in body size during the microtine cycles is discussed.

10

The high mountain fluvial system the Western Tatra, perspective

67%

Krzemien K.

Geographia Polonica

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1992

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tom 60

11

Palynological studies of lake and lake-swamp sediments of the Holocene in the high mountains of Arkhyz [Western Caucasus]

59%

Kvavadze E. V., Efremov Y. V.

Acta Palaeobotanica

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1996

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tom 36

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nr 1

Ograniczanie wyników

Sphagnum-Polytrichum hummocks - a bryologically neglected plant formation

Different coevolutionary breeding strategies of Ischnoceran lice on Prunella collaris and P. modularis in high mountains

Alder, Alnus incana [L.] Mnch., leaf decomposition in a high mountain stream

The experience of the complex mapping of the high mountains of the Greater Caucasus

Altitudinal patterns of vascular plant richness in high mountains: applying of generative additive model

Invertebrate communities of high mountain lakes (Polish Tatra Mts.)

Foraging strategies and dietary preferences of a high mountain ant. [Hymenoptera: Formicidae]

Distribution and habitats of Chamorchis alpina [L.] Rich. [Orchidaceae] in Poland

Morphological variability of a root vole population in high mountain habitats, Hardangervidda, South Norway

The high mountain fluvial system the Western Tatra, perspective

Palynological studies of lake and lake-swamp sediments of the Holocene in the high mountains of Arkhyz [Western Caucasus]