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You searched for: Subject environmental Remove constraint Subject: environmental Journal Biologia Remove constraint Journal: Biologia Publication Year 2009 Remove constraint Publication Year: 2009
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1. Differentiated macrophyte types as a habitat for rotifers in small mid-forest water bodies

Author:
Basińska, Anna; Kuczyńska-Kippen, Natalia
Source:
Biologia 2009 v.64 no.6 pp. 1100-1107
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; Rotifera; community structure; eutrophication; fauna; habitats; macrophytes; ponds; predation; surface water; watersheds;     Show all 11 Subjects
Abstract:
... The rotifer community structure may be shaped by a variety of environmental factors, including biological parameters, such as predation or competition, as well as by physical-chemical factors, among which the kind of macrophyte substratum and parameters relating to the trophic state and to the catchment area conditions are of great importance. Another impact on rotifer composition, abundance and f ...
DOI:
10.2478/s11756-009-0178-4

2. The rare species Synura lapponica (Synurophyceae) new to the Czech Republic, local vs. global diversity in colonial synurophytes

Author:
Němcová, Yvonne; Pichrtová, Martina
Source:
Biologia 2009 v.64 no.6 pp. 1070-1075
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; Synura; freshwater; latitude; pH; probability; rare species; seasonal variation; surveys; water temperature; Czech Republic;     Show all 11 Subjects
Abstract:
... Synura lapponica Skuja, a freshwater colonial flagellate (Synurophyceae, Stramenopila), has been reported for the first time in the Czech Republic. This study evaluates the ecological requirements of the species, and includes a survey of the literature. Although S. lapponica has been reported thus far only in the Northern Hemisphere, the probability of its bipolar distribution is relatively high ( ...
DOI:
10.2478/s11756-009-0181-9

3. Modulation of biocidal activity of Calothrix sp. and Anabaena sp. by environmental factors

Author:
Radhakrishnan, Balasubramanian; Prasanna, Radha; Jaiswal, Pranita; Nayak, Saswati; Dureja, Prem
Source:
Biologia 2009 v.64 no.5 pp. 881-889
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; Anabaena; Calothrix; Macrophomina phaseolina; Pythium debaryanum; Synechococcus; Synechocystis; antifungal properties; biocides; biological control agents; ethyl acetate; filtrates; lawns and turf; light intensity; pH; photons; plant pathogenic fungi; temperature; toxicity;     Show all 19 Subjects
Abstract:
... An investigation was undertaken to evaluate a set of cyanobacterial strains in terms of production of biocidal compounds exhibiting allelochemical and fungicidal properties. Two cyanobacterial strains — Anabaena sp. and Calothrix sp. were selected for further investigation, on the basis of their larger inhibition zones on the lawn of Synechocystis and Synechococcus sp. and two phytopathogenic fung ...
DOI:
10.2478/s11756-009-0169-5

4. Modelling crop yield response to precipitation redistribution on slopes

Author:
Saue, Triin; Kadaja, Jüri
Source:
Biologia 2009 v.64 no.3 pp. 502-506
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; crop models; meteorological data; topographic slope; drought; crop yield; potatoes; rain; rain intensity; soil water; summer; hills; runoff; vegetation; water distribution; Estonia;     Show all 16 Subjects
Abstract:
... In undulating or sloping land, water distribution in soil has a major influence on crop yield through stresses on vegetation. It is difficult to predict the impacts, however, so a crop model is required to simulate topography-related horizontal redistribution of summer precipitation and its effect on yield. This study uses a potato model (POMOD), operating with the concept of meteorologically poss ...
DOI:
10.2478/s11756-009-0103-x

5. Soil tillage systems to reduce the harmful effect of extreme weather and hydrological situations

Author:
Farkas, Csilla; Birkás, Márta; Várallyay, György
Source:
Biologia 2009 v.64 no.3 pp. 624-628
ISSN:
1336-9563
Subject:
environmental protection,   etc   ; Chernozems; basins; catch crops; climate change; corn; cropping sequence; direct seeding; discing; forage; heat; management systems; nutrition; peas; plowing; probability; rye; semiarid zones; soil structure; soil water; soil water content; water conservation; water reservoirs; weather; Hungary;     Show all 25 Subjects
Abstract:
... Soil as the largest potential natural water reservoir in the Carpathian Basin has increasing importance under conditions of predicted climate change resulting in increase of probability of extreme hydrological events. Soil management changes soil structure and has a major effect on soil water, heat and nutrition regimes. In this study the effect of four tillage treatments in combination with catch ...
DOI:
10.2478/s11756-009-0079-6

6. Current knowledge and phytosociological data on the high-altitude vegetation in the Western Carpathians — a review

Author:
Šibíková, Ivana; Šibík, Jozef; Jarolímek, Ivan; Kliment, Ján
Source:
Biologia 2009 v.64 no.2 pp. 215-224
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; botanical composition; databases; geology; phytosociology; plant communities; soil types; surveys; treeline; Poland; Slovakia;     Show all 11 Subjects
Abstract:
... Presented survey summarizes the results of the studies published predominantly after 2000, dealing with the plant communities around and above the timberline in (montane) subalpine to alpine (subnival) belt of the Western Carpathians. All of these communities underwent a critical syntaxonomical and nomenclatorical revision, hence the demonstrated overview of high-mountain vegetation of Western Car ...
DOI:
10.2478/s11756-009-0032-8

7. Farming system and habitat structure effects on rove beetles (Coleoptera: Staphylinidae) assembly in Central European apple and pear orchards

Author:
Balog, Adalbert; Markó, Viktor; Imre, Attila
Source:
Biologia 2009 v.64 no.2 pp. 343-349
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; Aleochara; Philonthus; Stercorarius; Tachyporus hypnorum; apples; clay soils; community structure; farming systems; farms; fauna; field experimentation; habitats; mountains; orchards; pears; pitfall traps; sandy soils; species diversity; surveys; woodlands;     Show all 21 Subjects
Abstract:
... In field experiments over a period of five years the effects of farming systems and habitat structure were investigated on staphylinid assembly in Central European apple and pear orchards. The investigated farms were placed in three different geographical regions with different environmental conditions (agricultural lowland environment, regularly flooded area and woodland area of medium height mou ...
DOI:
10.2478/s11756-009-0045-3

8. Variation in life-cycle between three rare and endangered floodplain violets in two regions: implications for population viability and conservation

Author:
Eckstein, Rolf; Danihelka, Jiří; Otte, Annette
Source:
Biologia 2009 v.64 no.1 pp. 69-80
ISSN:
1336-9563
Subject:
environmental factors,   etc   ; Viola elatior; demography; floodplains; flowering; habitat destruction; habitats; land use; life tables; models; population growth; reproduction; stochastic processes; viability; Czech Republic; Germany;     Show all 16 Subjects
Abstract:
... We studied the demography of Viola elatior, V. pumila, and V. stagnina, three rare and endangered Central European floodplain species, to (i) analyse variation in life-cycles among congeners and between regions (Dyje-Morava floodplains, Czech Republic; Upper Rhine, Germany), (ii) to define sensitive stages in the life-cycles, and (iii) to identify possible threats for population viability and spec ...
DOI:
10.2478/s11756-009-0002-1