Results 41 to 50 of about 981 (209)

Effects of turbidity and introduced tilapia (Oreochromis spp) on macrophytes and invertebrates in a shallow tropical lake

Knowledge and Management of Aquatic Ecosystems, 2023
Tropical freshwater wetlands are subject to multiple stressors but there is little information on which stressors cause wetland degradation. Increased turbidity is considered a major cause of degradation, but the effects of introduced fish are often ...
Rasoamihaingo Laurence Adel, Razafindrajao Felix, Andriambelo Harison, Rene de Roland Lily Arison, Bamford Andrew J.   +4 more
doaj   +1 more source

Large CO₂ disequilibria in tropical lakes [PDF]

Global Biogeochemical Cycles, 2009
On the basis of a broad compilation of data on pCO2 in surface waters, we show tropical lakes to be, on average, far more supersaturated and variable in CO2 (geometric mean ± SE pCO2 = 1804 ± 35 μatm) than temperate lakes (1070 ± 6 μatm). There was a significant negative relationship between pCO2 and latitude, resulting in an average decrease of pCO2 ...
Marotta, Humberto, Duarte, Carlos M., Sobek, Sebastian, Enrich-Prast, Alex   +3 more
openaire   +2 more sources

Farmers' Soil–Water Management Practices and Perspectives on Soil Salinization in Mirab Abaya District, Gamo Zone, Southern Ethiopia

Irrigation and Drainage, EarlyView.
ABSTRACT Soil salinization is a critical threat, impacting 20% of the world's irrigated lands and jeopardizing food security. In Ethiopia's Mirab Abaya district of the Gamo Zone, unsustainable irrigation methods exacerbate this issue. This paper examines local farmers' soil–water management systems and their awareness of salinization, aiming to educate
Oloba Jobe, Fanuel Laekemariam, Dereje Tsegaye, Demelash Wendemeneh   +3 more
wiley   +1 more source

Nutrient, Organic Matter and Shading Alter Planktonic Structure and Density of a Tropical Lake

Limnological Review
The structure and density of plankton communities greatly influence carbon and nutrient cycling as well as the environmental status of lake ecosystems.
Marina Isabela Bessa da Silva, Luciana Pena Mello Brandão, Ludmila Silva Brighenti, Peter A. U. Staehr, Cristiane Freitas de Azevedo Barros, Francisco Antônio Rodrigues Barbosa, José Fernandes Bezerra-Neto   +6 more
doaj   +1 more source

Estimation of the eddy diffusivity coefficient in a warm monomictic tropical Lake

Journal of Limnology, 2016
We used a two-year dataset (1998-1999) of monthly temperature profiles from Lake Alchichica, Mexico to estimate values of the vertical coefficient of eddy diffusivity.
David A. Salas de León, Javier Alcocer, Vilma Ardiles Gloria, Benjamín Quiroz-Martínez   +3 more
doaj   +1 more source

Added Value of CESM‐Driven WRF for Mean and Extreme Precipitation Over Complex Terrain in Southwest Asia

International Journal of Climatology, EarlyView.
Southwest Asia remains understudied in high‐resolution regional climate modelling despite its climatic sensitivity and complex orography. We compare WRF (10 km), CESM (~2°), and ERA5 (0.25°) for 1950–2002, with supplementary validation against CHIRPS and PERSIANN‐CDR. WRF corrects the unrealistic summer precipitation overestimation of CESM and improves
Markella Bouchorikou, Thi Quynh Trang Nguyen, Dominik Fleitmann, Morteza Djamali, Martina Messmer, Christoph C. Raible   +5 more
wiley   +1 more source

Climate Indices and Atmospheric Circulation Patterns Linked to East Asian Summer Wet‐Bulb Temperatures

International Journal of Climatology, EarlyView.
Summer wet‐bulb temperatures (Tw) have been rising across East Asia in recent decades, reflecting the intensification of humid heat. To isolate internally driven variability from the long‐term warming trend, EOF analysis was performed on linearly detrended Tw, revealing two dominant modes of spatially contrasting variability: a north–south dipole ...
Boseung Lee, Ji‐Seon Oh, Youngseok Lee, Pil‐Hun Chang, Hyun Min Sung, Maeng‐Ki Kim   +5 more
wiley   +1 more source

From Storage to Release: How Depth, Temperature and Sediment Texture Structure Methane Partitioning in a Tropical Lake

Limnological Review
We tested how depth-linked hydrostatic pressure, sediment temperature, and sediment texture, represented here by grain-size distribution, partition methane (CH4) between dissolved storage in sediment porewater and ebullitive release in a tropical ...
Nelson Azevedo Santos Teixeira de Mello, Elisa Aguiar Porto Viana, José Fernandes Bezerra-Neto   +2 more
doaj   +1 more source

Sixty years since the creation of Lake Kariba: Thermal and oxygen dynamics in the riverine and lacustrine sub-basins.

PLoS ONE, 2019
The current boom of dam construction at low latitudes endangers the integrity and function of major tropical river systems. A deeper understanding of the physical and chemical functioning of tropical reservoirs is essential to mitigate dam-related ...
Elisa Calamita, Martin Schmid, Manuel Kunz, Mzime Regina Ndebele-Murisa, Christopher H D Magadza, Imasiku Nyambe, Bernhard Wehrli   +6 more
doaj   +1 more source

Understanding the performance of the FLake model over two African Great Lakes [PDF]

Geoscientific Model Development, 2014
The ability of the one-dimensional lake model FLake to represent the mixolimnion temperatures for tropical conditions was tested for three locations in East Africa: Lake Kivu and Lake Tanganyika's northern and southern basins. Meteorological observations
W. Thiery, A. Martynov, F. Darchambeau, J.-P. Descy, P.-D. Plisnier, L. Sushama, N. P. M. van Lipzig   +6 more
doaj   +1 more source