Results 61 to 70 of about 23,206 (256)

Temporal variation of phytoplankton in a small tropical crater lake, Costa Rica

Revista de Biología Tropical, 2010
The temporal variation in lake’s phytoplankton is important to understand its general biodiversity. For tropical lakes, it has been hypothesized that they follow a similar pattern as temperate ones, on a much accelerated pace; nevertheless, few case ...
Gerardo Umaña-Villalobos
doaj  

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

Distribution and fluctuations of backswimmers (Notonectidae) in a tropical shallow lake and predation on microcrustaceans

Brazilian Journal of Biology
Notonectids are widely distributed in freshwaters and can prey on zooplankton in temperate lakes. However, its role in structuring the zooplankton community is unknown in tropical lakes.
A. R. Domingos, M. S. Arcifa
doaj   +1 more source

Tropicalization of the Temperate Zone: Spatiotemporal Variability of Winter Warming and Declining Freeze Days Across the United States

International Journal of Climatology, EarlyView.
Unique characteristics of winter daily minimum (Tmin) and maximum (Tmax) temperatures and freeze days across the conterminous United States from 1952 to 2024 are examined. Results show spatial heterogeneity in Tmin/Tmax warming rates across the tropical‐temperate transition zone in the southeastern United States, and that the highest temperature on the
Vincent M. Brown, Derek T. Thompson, Buren B. DeFee II, Michael J. Osland, Barry D. Keim   +4 more
wiley   +1 more source

Degradation of Seasonally Frozen Ground in the Three–River Source Region and Its Correlation Impact Within Precipitation–Runoff Process

International Journal of Climatology, EarlyView.
This study reveals how climate change alters the water cycle in the Three Rivers Source region by degrading its important ‘solid groundwater’ (seasonally frozen ground). We found that runoff response varies by watershed and the role of permafrost decreases sharply, making water supply more dependent on rainfall and becoming increasingly vulnerable ...
Chenchen Ren, Xiangde Xu, Jieru Ma, Bingrong Zhou, Na Dong, Wenyue Cai, Chunzhu Wang   +6 more
wiley   +1 more source

Characterising City Scale Heat Climatology for Australian Climate Zones

International Journal of Climatology, EarlyView.
The Urban Heat Island (UHI) effect in Australian cities peaks at night, intensifying under dry conditions, clear skies, increased solar radiation, and low wind speeds. Long‐term observations show that nighttime temperatures in major cities have warmed faster than their rural surroundings and future climate projections fail to capture this disparity ...
Vihan C. N. Weeraratne, Nikhil Garg, Raymond C. Z. Cohen, Valentijn R. N. Pauwels, Mahesh Prakash   +4 more
wiley   +1 more source

Thermal structure of the Poraquê lake, Central Amazonian, Brazil = Estrutura térmica do lago Poraquê, Amazônia Central, Brasil

Acta Scientiarum: Biological Sciences, 2011
Thermal gradient of a Central Amazonian lake was studied to establish a link between seasonal variations in the water level, temperature, suspended particulate matter (SPM) and thermal stratification.
Fabio Marques Aprile
doaj  

Spatial and Temporal Patterns of Extreme Hourly Rainfall in the Hawaiian Islands

International Journal of Climatology, EarlyView.
The extreme rainfall trends in Hawaiʻi were revealed by hourly rainfall data: Across islands, Kauaʻi and Hawaiʻi Island had larger events at a return period. Annual maximum series of 15 gauges showed significant positive trends. While extreme rainfall trends show increases or decreases regionally, the trends varied with rainfall duration.
Maxime Gayte, Yu‐Fen Huang, Yinphan Tsang, Pao‐Shin Chu, Thomas W. Giambelluca, Hanpei Zhang   +5 more
wiley   +1 more source

Contrasting Heatwave Regimes in Dry and Humid Subtropical Mexico: A Station‐Based Probabilistic Assessment

International Journal of Climatology, EarlyView.
Heatwaves have intensified under a warming climate, producing substantial environmental and societal impacts. This study characterizes heatwave regimes in two contrasting regions of Mexico using a percentile‐based threshold and a Poisson distribution framework.
Jorge Cortés‐Ramos, Ana Teresa Mendoza‐Rosas, Victor Manuel Torres‐Puente, José Francisco León‐Cruz, Evi Becerra‐Acosta, Arturo I. Quintanar, David Romero   +6 more
wiley   +1 more source

Declining volume development index precedes basin infilling in Mahakam Lakes, Indonesia

Frontiers in Earth Science
IntroductionIndonesia has designated 15 National Priority Lakes (Presidential Regulation No. 60/2021), yet quantitative baselines to assess sedimentation threats remain insufficient for most watersheds.
Stevanus Nalendra Jati, Stevanus Nalendra Jati, Dasapta Erwin Irawan, Dudy Darmawan Wijaya, Deny Juanda Puradimaja   +4 more
doaj   +1 more source