Results 71 to 80 of about 19,950 (298)

Bed‐level tools for monitoring erosion and accretion patterns: Flume validation and field testing

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Monitoring short‐term changes in surface sediment elevation is fundamental to understanding erosion, transport, and deposition dynamics in shallow coastal environments. However, commonly used field approaches, such as horizontal markers, sediment erosion tables, subsurface sediment plates, or erosion pins, are not always cross‐validated under ...
Lucía Rodríguez‐Arias   +6 more
wiley   +1 more source

Methodological constraints for the stable isotope analysis of different tissues: A comparison between muscle and whole‐body samples in freshwater gammarids

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Carbon (δ13C) and nitrogen (δ15N) stable isotope ratios allow the reconstruction of food webs, provided that all trophic levels are properly characterized. In freshwater ecosystems, small‐bodied invertebrates often occupy central positions in food webs, with whole‐body samples commonly used for their stable isotope analysis, due to ...
Alan Fritsch   +3 more
wiley   +1 more source

Abiotic variability among different aquatic systems of the central Amazon floodplain during drought and flood events

open access: yesBrazilian Journal of Biology
This paper examines water properties from lakes, (depression lakes, sensu Junk et al., 2012), channels (scroll lakes with high connectivity, sensu Junk et al., 2012) and paleo-channels (scroll lakes with low connectivity-sensu Junk et al., 2012, locally ...
A. G. Affonso   +2 more
doaj   +1 more source

Environmental and socio‐economic factors behind data provision in 17 citizen science projects

open access: yesPeople and Nature, EarlyView.
Abstract Citizen science approaches in ecology have recently become increasingly popular. Although many advantages, such as the cost‐effective collection of vast amounts of data, outweigh the disadvantages, most projects face difficulties, such as non‐random sampling, pseudo‐absences or various biases, such as detection/reporting biases or participant ...
Zsóka Vásárhelyi   +21 more
wiley   +1 more source

DESARROLLO DE LA LIMNOLOGÍA EN COLOMBIA: CUATRO DÉCADAS DE AVANCES PROGRESIVOS COLOMBIAN LIMNOLOGY DEVELOPMENT: FOUR DECADES OF PROGRESSIVE ADVANCEMENTS

open access: yesActualidades Biológicas, 2009
Se hace un recorrido del desarrollo histórico de la limnología en Colombia a partir de la década de los años setenta. Se analizan las características biológicas y fisicoquímicas de los diferentes ecosistemas acuáticos y se valora qué tanta información se
Gabriel Roldán-Pérez
doaj  

Growth performance of Nile tilapia, Oreochromis niloticus, fingerlings reared in Na2CO3 limed waters - doi: 10.4025/actascianimsci.v32i3.8510

open access: yesActa Scientiarum: Animal Sciences, 2010
Current experiment was undertaken during 6 weeks with Nile tilapia, Oreochomis niloticus, fingerlings (1.28 ± 0.03 g) to assess the effects of moderate Na2CO3 liming on water quality and fish growth performance. Twenty-four 25 L-aquaria, with 15 fish per
Davi de Holanda Cavalcante   +2 more
doaj   +1 more source

Long‐Term Morphodynamic Responses to Flood Diversion in the Lower Kano River, Japan

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Fluvial morphodynamics—the interaction between water flow, sediment transport, and channel morphology—is a central concern in sustainable river management. However, the long‐term effects of flood diversion remain underexplored. This study investigated the decadal‐scale morphodynamic responses of the lower Kano River in Japan following the ...
Yuta Itsumi   +4 more
wiley   +1 more source

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl   +8 more
wiley   +1 more source

Nitrogen: a factor controlling buoyancy and species selection in the Lower River Murray

open access: yes, 1998
J. Brookes, G. Ganf, M. Burch and P.
Brookes, J.   +3 more
core  

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