Results 61 to 70 of about 7,650 (311)

"Two tribes": Handaxe shape variation shows distinct regional cultural groups in southeastern Britain between 424 000 and 374 000 BP

Journal of Quaternary Science, EarlyView.
ABSTRACT This paper examines regional and chronological variations in Acheulean handaxe morphology during Marine Isotope Stage 11 (c. 425–365 ka BP) in Britain. Using a data set of 737 handaxes from 13 securely dated sites in East Anglia and the Thames Valley, we apply three‐dimensional geometric morphometric analysis to examine morphological ...
Mark White, Frederick Foulds, Aaron Rawlinson, Ceri Shipton, Rob Davis, Nick Ashton   +5 more
wiley   +1 more source

Economic analysis of floodplain aquaculture at Daudkandi upazilla in Comilla

Journal of the Bangladesh Agricultural University, 2010
An economic anylysis was made to determine the cost of fish production in the floodplains at Daudkandi Upazilla in Comilla district during the period form January to April, 2007. Survey method was followed to collect data from 20 floodplain aquaculture projects.
Chandra, K.J, Sraker, D., Khaleque, M.A, Das, D.R, Chandra, K.J, Sraker, D., Khaleque, M.A, Das, D.R   +7 more
openaire   +4 more sources

Genetic variability studies for qualitative and quantitative traits in some recently developed rice varieties of Bangladesh

JSFA reports, EarlyView.
Abstract Background The study aimed to assess six recently developed rice varieties: BRRI dhan84, BRRI dhan89, BRRI dhan92, BRRI dhan99, BRRI dhan100, and BRRI dhan102 of Bangladesh. The primary objectives were to assess genetic variability and key genetic parameters for selected qualitative and quantitative traits, identify, and prioritize promising ...
Md. Darun Naim, Md. Sohag Parvez, Mosammat Nilufar Yasmin, Md. Robiul Islam   +3 more
wiley   +1 more source

Analysis of flow around impermeable groynes on one side of symmetrical compound channel: An experimental study

Water Science and Engineering, 2010
This paper presents the results of an experimental study on the influences of floodplain impermeable groynes on flow structure, velocity, and water depth around the groyne(s). A wooden symmetrical compound channel was used.
Hassan Safi Ahmed, Mohammad Mahdi Hasan, Norio Tanaka   +2 more
doaj   +1 more source

Nitrogen rates shaping rice yield and groundwater nitrate in the Jamuna River basin of north central Bangladesh

JSFA reports, EarlyView.
Abstract Background Understanding how varying nitrogen fertilizer rates influence both rice productivity and groundwater nitrate contamination is critical for ensuring sustainable crop production and environmental protection in the Jamuna River Basin of north‐central Bangladesh.
Md. Israfil Haq, Nishat Salsabil Khan, Mohammad Golam Kibria, Md Hosenuzzaman, Md. Anwarul Abedin   +4 more
wiley   +1 more source

Contrasted habitat selection among Eurasian curlew populations according to landscape heterogeneity and breeding stage

The Journal of Wildlife Management, EarlyView.
This study aimed to quantify the spatio‐temporal use of breeding environments by the Eurasian curlew in 5 contrasting agricultural landscapes. To this end, 64 individuals were tagged with GPS devices to assess their space use according to their breeding stages and define their foraging habitat selection.
Marie Donnez, Emmanuel Joyeux, Frédéric Jiguet, Jean‐Noël Ballot, Jeanne Bienvenut, Alain Chartier, Etienne Debenest, Charlotte Francesiaz, Aurélien Lacondemine, Christophe Lartigau, Yves‐Marie Le Guen, Jacques Maout, Charline Pierrefeu, David Pinaud, Nicolas Terrel, Pierrick Bocher   +15 more
wiley   +1 more source

Seasonal Risk Analysis for Floodplains in the Delaware River Basin

Journal of Water Resources Planning and Management, 2000
Overland pollutant transport via surface runoff and flooding is a primary concern in the management of agricultural land resources in the Delaware River Basin. The Catskills is home to multiple water reservoirs that supply the drinking water for New York City.
Weiler, K., Walter, M.T., Walter, M.F., Brooks, E.S., Scott, Christopher A.   +4 more
openaire   +1 more source

Evaluation of Sediment Connectivity Indices to Improve the Prediction of the Spatiotemporal Variability of Sediment Yield for a Large River Basin (Wei River, China)

Land Degradation &Development, EarlyView.
ABSTRACT Sediment connectivity between source areas and the main streams or local sinks is a complex and dynamic process, especially in large basins due to multiple heterogeneities and interactions between connectivity components. Sediment connectivity indices are promising tools to investigate sediment transport, especially in data‐scarce or large ...
Zhenni Wu, Jantiene E. M. Baartman, João Pedro Nunes, Manuel López‐Vicente   +3 more
wiley   +1 more source

Improve Carbon Budget Assessment in Floodplain Wetlands Using Hydrodynamic and Integrated Machine Learning Models

Water Resources Research
Floodplain wetlands play a crucial role in the global carbon cycle, yet the spatiotemporal variation of carbon flux in floodplain wetlands remains poorly understood due to complex hydrological processes.
Yang Liu, Cheng Chen, Qiuwen Chen, Jianyun Zhang, Zheng Sun, Xingcheng Yan, Qi Huang   +6 more
doaj   +1 more source

Floodplain retention capacity assessment for Lužnice river

Acta Universitatis Carolinae Geographica, 2017
One of main topics of interdisciplinary project NIVA – Water Retention in Floodplains and Possibilities of Retention Capacity Increase is the assessment of flood wave transformation in the floodplain.
Václav David, Tomáš Dostál
doaj   +1 more source