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Start Over Coverage 279-283

2. Comparison of the monitored and modeled soil water storage of the upper soil layer: the influence of soil properties and groundwater table level

Creator:
Šútor, Július, Štekauerová, Vlasta, and Nagy, Viliam
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
soil, water storage, groundwater table, water content, monitoring, climate change, pôda, zásoba vody, hladina podzemnej vody, vlhkosť pôdy, and klimatická zmena
Language:
Slovak
Description:
In the study of Tomlain (1997) a soil water balance model was applied to evaluate the climate change impacts on the soil water storage in the Hurbanovo locality (Southwestern Slovakia), using the climate change scenarios of Slovakia for the years 2010, 2030, and 2075 by the global circulation models CCCM, GISS and GFD3. These calculations did not take into consideration neither the various soil properties, nor the groundwater table influence on soil water content. In this study, their calculated data were compared with those monitored at the same sites. There were found significant differences between resulting soil water storage of the upper 100 cm soil layer, most probably due to cappilary rise from groundwater at sites 2 and 3. It was shown, that the soil properties and groundwater table depth are importat features strongly influencing soil water content of the upper soil layer; thus the application of the soil water balance equation (Eq. (1)), neglecting the above mentioned factors, could lead to the results far from reality. and V práci Tomlaina (1997) bol aplikovaný bilančný model vodného režimu pôd na ohodnotenie dopadu klimatickej zmeny na vodné zásoby pôdy v lokalite Hurbanovo (juhozápadné Slovensko), použijúc scenáre klimatickej zmeny pre Slovensko pre roky 2010, 2030 a 2075, založené na globálnych cirkulačných modeloch CCCM, GISS a GFD3. V týchto výpočtoch nebol braný do úvahy vplyv vlastností pôdy a hladiny podzemnej vody na vlhkosť pôdy. V práci boli porovnané vypočítané hodnoty zásob vody s monitorovanými v tej istej lokalite. Bol nájdený význačný rozdiel medzi zásobami vody v 100-cm hornej vrstve pôdy najpravdepodobnejšie spôsobený kapilárnym prítokom od hladiny podzemnej vody v monitorovacích miestach 2 a 3. Bolo ukázané, že pôdne vlastnosti a hĺbka hladiny podzemnej vody sú dôležitými faktormi, ktoré silno ovplyvňujú vlhkosť hornej vrstvy pôdy; z toho vyplýva, že aplikácia bilančnej rovnice (rov. (1)), ktorá zanedbáva vyššie uvedené faktory, nedáva reálne výsledky.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Effect of water stress on photosynthesis in two mulberry genotypes with different drought tolerance

Creator:
Ramanjulu, S., Sreenivasulu, N., and Sudhakar, C.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Ci/gs ratio, cultivar differences, intercellular CO2 concentration, Morus alba, net photosynthetic rate, photosystem 2, and stomatal conductance
Language:
Multiple languages
Description:
Three-month-old mulberry (Morus alba L.) cultivars (drought tolerant S13 and drought sensitive S54) were subjected to water stress for 15 d. Water stress decreased the leaf water potential, net photosynthetic rate (PN), and stomatal conductance (gs) in both the cultivars. However, the magnitude of decline was comparatively greater in the sensitive cultivar (S54). Intercellular CO2 concentration (Ci) was unaltered during mild stress, but significantly increased at severe stress in both cultivars. The photosystem 2 activity significantly declined only at a severe stress in both cultivars. The Ci/gs ratio representing the mesophyll efficiency was greater in the tolerant cultivar S13. Involvement of stomatal and/or non-stomatal components in declining PN depended on the severity and duration of stress. However, the degree of non-stomatal limitations was relatively less in the drought tolerant cultivar. and S. Ramanjulu, N. Sreenivasulu, C. Sudhakar.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Paranaelia luquei gen. et sp. n. (Monogenea: Microcotylidae), a new parasite of Brazilian catfìshes

Creator:
Kohn, Anna, Baptista-Farias, Maria de Fatima D., and Chiniez Cohen, Simone
Format:
print
Type:
model:internalpart and TEXT
Subject:
Monogcnca, Microcotylidae, Paranaella luquei, catfíshes, Paraná River, and Brazil
Language:
English
Description:
Paranaella, a new microcotyline monotypie genus, is erected to accommodate Paranaella luquei sp. n., parasite of gill filaments from Hypostomus sp., Hypostomus regani (Ihering) and Rhinelepis aspera Spix et Agassiz (Loricariidae) from the Paraná River, Brazil. The new genus is most closely related to Microcolyle Van Beneden et Hesse, 1863, Diploslamenides Unnithan, 1971 and Solostamenides Unnithan, 1971. From Microcolyle it differs mainly by having the genital atrium formed by a muscular ring with a concentric row of numerous elongate and straight spines; from Diplostamenides it can be distinguished by the unarmed and not differentiated cirrus and from Solostamenides it differs by the single vaginal pore and absence of larval hooks.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

6. Photoinhibition of photosystem 2 in vivo occurring without net D1 protein degradation

Creator:
Schnettger, B., Leitsch, J., and Krause, G. H.
Format:
print
Type:
model:internalpart and TEXT
Language:
Multiple languages
Description:
Immunological quantification of the thylakoid membranes Dl protein showed that in intact leaves of spinách and intact mesophyli protoplasts of Valerianella locusta L. photoinactivation of photosystem 2 was not related to the net degradation of Dl. The data indicate a sync^onization between the Dl degradation and resynthesis during photoinhibition and recovery in vivo.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

7. Regional ultrastructural differences of the scolex and neck tegument of Proteocephalus macrocephalus (Eucestoda: Proteocephalidae)

Creator:
Žďárská, Zdeňka and Nebesářová, Jana
Format:
print
Type:
model:internalpart and TEXT
Subject:
Cestoda, TEM, scolex and neck tegument, and Proteocephalus macrocephalus
Language:
English
Description:
Structural differences of microtriches and distal cytoplasm of the tegument in the apical and lateral suckers, scolex proper and neck of Proteocephalus macrocephalus (Creplin,1815) were studied. The microthrix border in the apical sucker is formed by filamentous microtriches only. The frontal and lateral parts of scolex bear mainly filamentous microtriches, but seldom short conoid types occur. The transitional zone between scolex and neck is covered mainly with short conoid microtriches. The neck bears blade-like microtriches. In the apical and lateral suckers, the basal plasma membrane of the distal cytoplasm adheres to the basal lamina at some points only, forming thus a lacunal system at the base of the sucker tegument. In the scolex proper and neck region, the basal plasma membrane of the tegument is connected continuously with the basal lamina. The distal cytoplasm is penetrated by two types of gland cell ducts and cibate sensory receptors. Possible functions of different parts of the microthrix border are discussed.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public