Spatial Distribution of the Biotic Community in the Thermal Gradients of the Two Hot Springs     

B. B. Jana  D. N. Pal  H. L. Sarkar 《洁净——土壤、空气、水》1982,10(1):101-108

The runoff channels of two hot springs are investigated at seven and six stations with water temperatures of 64 … 34 or 44 … 35 °C, respectively. The temperatures are constant in the annual variation. With decreasing temperature, the pH-values and alkalinity decrease, whereas the hydrogen carbonate content and the orthophosphate concentration increase. In the range above 60 °C the mat consists of cyanophyceae and bacteria, and, unexpectedly, already from 60 °C also diatoms occur as dominant forms, below 40 °C the mat consisting of green algae and diatoms. With rotatoria, crustaceae and insects, herbivorous species occur only below 40 °C, fish species are regularly found below 38 °C.  相似文献   

Participation and Governance in Regional Development: Global Trends in an Australian Context - Edited by Robyn Eversole and John Martin     

Mark  Beeson 《The Geographical journal》2007,173(2):191-192

  相似文献   

Modelling three‐dimensional flow structures and patterns of boundary shear stress in a natural pool–riffle sequence     

D. J. Booker  D. A. Sear  A. J. Payne 《地球表面变化过程与地形》2001,26(5):553-576

  相似文献   

Adaptive neuro-fuzzy inference system coupled with shuffled frog leaping algorithm for predicting river streamflow time series     

Babak Mohammadi  Nguyen Thi Thuy Linh  Ali Najah Ahmed  Jana Vojteková  Yiqing Guan 《水文科学杂志》2020,65(10):1738-1751

ABSTRACT

Accurate runoff forecasting plays a key role in catchment water management and water resources system planning. To improve the prediction accuracy, one needs to strive to develop a reliable and accurate forecasting model for streamflow. In this study, the novel combination of the adaptive neuro-fuzzy inference system (ANFIS) model with the shuffled frog-leaping algorithm (SFLA) is proposed. Historical streamflow data of two different rivers were collected to examine the performance of the proposed model. To evaluate the performance of the proposed ANFIS-SFLA model, six different scenarios for the model input–output architecture were investigated. The results show that the proposed ANFIS-SFLA model (R² = 0.88; NS = 0.88; RMSE = 142.30 (m³/s); MAE = 88.94 (m³/s); MAPE = 35.19%) significantly improved the forecasting accuracy and outperformed the classic ANFIS model (R² = 0.83; NS = 0.83; RMSE = 167.81; MAE = 115.83 (m³/s); MAPE = 45.97%). The proposed model could be generalized and applied in different rivers worldwide.  相似文献   

Electromagnetic induction study on dss profile No. V (carpathians)     

Jerzy Jankowski  Antoni Szymański  Jana Pěčová  Oldřich Praus  Václav Petr  Reviewer A. Janáčková 《Studia Geophysica et Geodaetica》1975,19(1):95-102

  相似文献   

Maximum entropy and maximum likelihood spectral estimates of geomagnetic variations     

Jana Pěčová  Karel Pěč  Reviewer G. Siráň 《Studia Geophysica et Geodaetica》1975,19(2):188-191

  相似文献   

A study of the electric conductivity of the earth's mantle from magnetotelluric measurements of the Budkov (Czechoslovakia) station     

Jana Pěčová  Oldŕich Praus  Marta Tobyášová 《Studia Geophysica et Geodaetica》1966,10(2):184-203

  相似文献   

Regional trends in European induction data     

Karel Pěč  Jana Pěčová  Oldřich Praus  Reviewer M. Hvoždara 《Studia Geophysica et Geodaetica》1977,21(3-4):383-393

n ¶rt;a, n¶rt;mau 531 au ¶rt; u aum m u¶rt;uu n mumu ana¶rt;, ¶rt; u -m n, aauum ¶rt;um u u amuaa n¶rt;naa ma ua aama. uu nmam an¶rt;u ¶rt; u aum aam ¶rt;au cuu uP _n ^m , n¶rt;am mn n=1, 2, 3 u 5 (m n). u uua ¶rt;a¶rt;amu uu n¶rt;mauu uum au (a. 1) u u n aumam uu nmu, m n¶rt;mam u¶rt; am uuu ¶rt; u aum (u. 1–4). annuau 2 u 5 mn nm ma am mmmu m (u. 5, 6). ama uuu u m aam amu uu uma.  相似文献   

Mixed function oxidases in marine organisms in relation to petroleum hydrocarbon metabolism and detection     

J.F. Payne 《Marine pollution bulletin》1977,8(5):112-116

Several phyla from the coastal Northwest Atlantic were investigated for mixed function oxidases. Enzyme activity was related to petroleum hydrocarbon metabolism and detection in the marine environment.  相似文献   

Chlorophyll production,in response to nutrient additions,by the algae in Lake Taupo water     

E. White  G. W. Payne 《新西兰海洋与淡水研究杂志》2013,47(3):501-507

In batch cultures of Lake Taupo water, phosphorus was the nutrient limiting plant growth from January to June, and nitrogen took over this role from July to December. Chlorophyll production by algae was often stimulated by trace element additions, but it was uncertain whether total cytoplasmic production was also involved.  相似文献