Results 51 to 60 of about 19,982,393 (193)

Diagnostic of ribeirão Mestre d’Armas sub-basin using two methods of rapid environmental assessment, Federal District, Central Brazil

open access: yesRevista Ambiente & Água, 2010
Rapid environmental assessments have been used to describe the quality and semi-quantitative attributes of the ecosystems along an environmental gradient using visual observations and few measurements.
Julio Cesar Joveli   +5 more
doaj   +1 more source

Pee Dee Lotic Crayfish [PDF]

open access: yes, 2005
The South Carolina Department of Natural Resources published guides to many threatened animals living in the state. This guide gives information about the Pee Dee Lotic Crayfish, including description, status, habitat, conservation challenges ...
Price, Jennifer
core  

Proportion of lentic and lotic responses in the Fish and Climate Change (FiCli) database summarized by topic.

open access: yes, 2023
Proportion of lentic and lotic responses in the Fish and Climate Change (FiCli) database summarized by topic.
Trevor J. Krabbenhoft (2921253)   +8 more
core   +1 more source

Diatoms (Bacillariophyceae) of Iguaçu National Park, Foz do Iguaçu, Brazil

open access: yesActa Botânica Brasílica, 2013
This study represents a taxonomic survey of class Bacillariophyceae diatoms found in samples collected in the Iguaçu River (Iguaçu National Park, municipality of Foz do Iguaçu, in the state of Paraná, Brazil) between August 2007 and July 2008.
Elaine Cristina Rodrigues Bartozek   +5 more
doaj  

Response of biofilm-dwelling nematodes to habitat changes in the Garonne River, France: influence of hydrodynamics and microalgal availability [PDF]

open access: yes, 2011
Lotic epilithic biofilms are submitted to seasonal disturbances (e.g. flood events, self-detachment), which influence the biomass, diversity and viability of their algal and bacterial communities.
Stéphanie Boyer   +17 more
core   +1 more source

Association of periphytic diatom species of artificial substrate in lotic environments in the Arroio Sampaio Basin, RS, Brazil: relationships with abiotic variables

open access: yesBrazilian Journal of Biology
Associations of diatom species were identified, in the Arroio Sampaio Basin, Rio Grande do Sul, Brazil, based on monthly samplings over a year along Arroio Sampaio and its main tributaries, using polyamide thread as an artificial substrate.
M. A. OLIVEIRA   +3 more
doaj   +1 more source

Biological monitoring of lotic ecosystems: the role of diatoms [PDF]

open access: yes, 2010
Increasing anthropogenic influence on lotic environments as a result of civilisation has captured public interest because of the consequent problems associated with deterioration of water quality.
T. Bere, JG. Tundisi
core   +2 more sources

Temporal and Spatial Dynamics of the Lotic Fish Communities: A Comparison of Coffee Filter‐Based Passive eDNA Collection Versus Active eDNA Filtering

open access: yesEnvironmental DNA
Environmental DNA (eDNA) metabarcoding is a noninvasive and cost‐effective method for fish community monitoring, enabling the determination of both the presence/absence of fish species and their relative quantity in closed systems.
Jelena Mlinarec   +6 more
doaj   +1 more source

Barriers effect on lotic fish fauna [PDF]

open access: yes, 2016
Barriers in running (lotic) waters are known to have serious impacts on fish fauna that would otherwise naturally colonialize them. The two most important effects barriers have on lotic fish fauna are the blockage of fish migration routes and the ...
Rudin, Johan
core  

DIATOMEAS PERIFÍTICAS DE LA ZONA DE RITRAL DEL RÍO MEDELLÍN (ANTIOQUIA), COLOMBIA PERIPHYTIC DIATOMS IN THE RHITHRON OF THE MEDELLÍN RIVER, (ANTIOQUIA), COLOMBIA

open access: yesActualidades Biológicas, 2008
Se estudió la agrupación de diatomeas colonizadoras de sustratos artificiales en la zona de ritral del río Medellín, ubicada dentro de la reserva ecológica del Alto de San Miguel entre los 1.800-2.800 m de altitud, en el municipio de Caldas (Antioquia ...
Yimmy Montoya-M.   +2 more
doaj  

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