Results 31 to 40 of about 271,773 (312)

Satellite and airborne remote sensing of gross primary productivity in boreal Alaskan lakes

open access: yesEnvironmental Research Letters, 2020
In terrestrial and marine ecosystems, remote sensing has been used to estimate gross primary productivity (GPP) for decades, but few applications exist for shallow freshwater ecosystems.Here we show field-based GPP correlates with satellite and airborne ...
Catherine Kuhn   +9 more
doaj   +1 more source

Quantifying stream phosphorus dynamics and total suspended sediment export in forested watersheds in Vermont [PDF]

open access: yes, 2018
Globally the quantity of reactive phosphorus (P) in soils, streams and groundwater has greatly increased throughout the 20th and early 21st centuries. This phenomenon is problematic in Vermont, evidenced by the repeated cyanobacteria blooms in shallow ...
Ross, Donald   +2 more
core   +2 more sources

Integrated ecosystem services-based calculation of ecological water demand for a macrophyte-dominated shallow lake

open access: yesGlobal Ecology and Conservation, 2020
Macrophyte-dominated shallow lakes are one of the commonest freshwater wetlands in plain area, and composed of lake, marsh, and terrestrial land. They are, however, facing great ecological risks of serious pollution and wetland degradation caused by the ...
Tian’ge Cao   +3 more
doaj   +1 more source

Source and Ecological Risk Characteristics of PAHs in Sediments from Qinhuai River and Xuanwu Lake, Nanjing, China

open access: yesJournal of Chemistry, 2017
In order to investigate the residual characteristics, sources, and ecological risk of PAHs in sediment from urban rivers, the sediments of 15 typical sites from Qinhuai River and Xuanwu Lake, which are typical urban rivers and lake, were collected from ...
Zhenhua Zhao   +3 more
doaj   +1 more source

Effects of muddy water irrigation with different sediment gradations on nitrogen transformation in agricultural soil of Yellow River Basin

open access: yesWater Science and Engineering, 2022
Muddy water irrigation has been widely practiced in the Yellow River Basin for agricultural production and is an important method of economical and intensive utilization of water resources.
Li-na Chen   +6 more
doaj   +1 more source

Comparative algological and bacteriological examinations on biofilms developed on different substrata in a shallow soda lake [PDF]

open access: yes, 2008
According to the European Water Framework Directives, benthic diatoms of lakes are a tool for ecological status assessment. In this study, we followed an integrative sample analysis approach, in order to find an appropriate substratum for the water ...
A Cattaneo   +36 more
core   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska   +2 more
wiley   +1 more source

Mapping vegetational and salinization phenomena to evaluate the extent of Lake Kelemenszék, Hungary [PDF]

open access: yes, 2008
Lake Kelemenszék (Danube-Tisza Interfluve, Hungary) is a shallow saline lake which is fed, beside by precipitation, partly by meteoric and also by rising saline groundwater.
Czauner, Brigitta   +3 more
core   +1 more source

Generalized Mechanism Model for Ecosystem Hysteresis

open access: yesAdvanced Science, EarlyView.
A simplified model examines ecosystem transitions into alternative states after disturbances by leveraging positive and negative feedbacks. It identifies critical tipping points and quantifies hysteresis. Tests conducted on lakes, grasslands, and pitcher‐plant leaves align closely with empirical data and enable the prediction of recovery trajectories ...
Yanbin Hao   +9 more
wiley   +1 more source

Development of an empirical model for chlorophyll-a and Secchi Disk Depth estimation for a Pampean shallow lake (Argentina) [PDF]

open access: yes, 2017
Shallow Pampean lakes are located in the most productive plain of Argentina. They are highly variable in salinity, turbidity and surface area. Laguna Chascomús has been monitored as a representative example of them.
Bohn, Vanesa Yael   +5 more
core   +1 more source

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