Results 51 to 60 of about 4,028 (227)

A revision of the genus Disparalona (Cladocera, Chydorinae) in South America

open access: yesEuropean Journal of Taxonomy, 2018
The genus Disparalona Fryer, 1968 comprises a well-defined species complex, the hamata-group, which might have sibling species in South America. This hamata-group needs urgent revision.
Francisco Diogo R. Sousa   +4 more
doaj   +1 more source

Restoring Lateral Connectivity to Anthropogenic Riverscapes: Six Lessons From Stage Zero

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Centuries of river modification, particularly straightening and incision, have severely reduced lateral connectivity between rivers and their floodplains. As a result, Stage 0 riverscapes, characterised by high lateral connectivity (e.g., anastomosing or wetland riverscapes), are now rare in anthropogenic landscapes.
Richard J. Mason   +8 more
wiley   +1 more source

Evaluating a Laboratory Flume Microbiome as a Window Into Natural Riverbed Biogeochemistry

open access: yesFrontiers in Water, 2021
Riverbeds are hotspots for microbially-mediated reactions that exhibit pronounced variability in space and time. It is challenging to resolve biogeochemical mechanisms in natural riverbeds, as uncontrolled settings complicate data collection and ...
Matthew H. Kaufman   +6 more
doaj   +1 more source

Effect of Combined Subsurface Structures and Steps on Hyporheic Exchange [PDF]

open access: yes, 2023
The deployment of artificial structures in streambeds has been proposed as a way to enhance hyporheic exchange, and numerical models can be used to quantify their effects.
A. N. Ghameshlou   +4 more
core   +1 more source

Hyporheic invertebrate assemblages at reach scale in a Neotropical stream in Brazil

open access: yesBrazilian Journal of Biology
In the Neotropical Region, information concerning hyporheic communities is virtually non-existent. We carried out a sampling survey in the hyporheic zone of the Tijuca River, in the Tijuca National Park, located in the urban area of the city of Rio de ...
R. Mugnai, G. Messana, T. Di Lorenzo
doaj   +1 more source

Phylogenetically independent behavior mediating geographic distributions suggests habitat is a strong driver of phenotype in crangonyctid amphipods

open access: yesFrontiers in Ecology and Evolution, 2023
It is unclear if geographic distributions of animals are behaviorally mediated or simply maintained by ecologically-driven deleterious effects on fitness.
McLean L. D. Worsham   +6 more
doaj   +1 more source

Reconnaissance‐Scale Methods for the Identification of Groundwater Discharge to Streams

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Identifying groundwater discharge locations is critical for understanding and monitoring groundwater contributions to streams in terms of water quantity and quality. Streams and rivers are under increasing strain from factors, including increased urbanization, agricultural land use, groundwater extraction, and climate change, which can alter ...
Corey M. Zanatta   +2 more
wiley   +1 more source

Limited effects of structural restoration on ecosystem functioning in an urban tropical stream

open access: yesRestoration Ecology, EarlyView.
Abstract Introduction Hydromorphological restoration through structural interventions is commonly used to mitigate urbanization impacts on lotic freshwater systems, but their effects on ecosystem functioning in urban tropical streams remain unexplored.
João Miguel Merces Bega   +2 more
wiley   +1 more source

Experimental and Numerical Investigation on the Impact of Emergent Vegetation on the Hyporheic Exchange

open access: yesWater Resources Research
Hyporheic exchange leads to the transfer of gases, solutes, and fine particles across the sediment‐water interface, playing a critical role in biogeochemical cycles and pollutant transport in aquatic environments.
S. H. Huang   +4 more
doaj   +1 more source

Rediscovering, Reevaluating, and Restoring Lost River-Wetland Corridors

open access: yesFrontiers in Earth Science, 2021
River-wetland corridors form where a high degree of connectivity between the surface (rheic) and subsurface (hyporheic) components of streamflow creates an interconnected system of channels, wetlands, ponds, and lakes. River-wetland corridors occur where
Ellen Wohl   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy