Results 81 to 90 of about 19,982,393 (193)

Identifying ecological restoration measures in a heavily regulated river system in northern Sweden

open access: yesKnowledge and Management of Aquatic Ecosystems
Hydropower provides renewable, fossil-free energy, but negatively impacts riverine ecosystems. Innovative assessment methods are needed to find mitigation measures protecting biodiversity, especially in the context of climate change, that balance ...
Widén Åsa   +3 more
doaj   +1 more source

Dispersal ability rather than ecological tolerance drives differences in range size between lentic and lotic water beetles (Coleoptera: Hydrophilidae)

open access: yes, 2014
Aim In aquatic ecosystems, standing (lentic) and running (lotic) waters differ fundamentally in their stability and persistence, shaping the comparative population genetic structure, geographical range size and speciation rates of lentic versus lotic ...
Sánchez-Fernández, David   +8 more
core   +1 more source

Biological diversity and current threats of lotic ecosystems

open access: yes, 2016
Although 100,000 out of approximately 1.75 million species described by scientists live in fresh water, knowledge of the total diversity of fresh waters is woefully incomplete, particularly among invertebrates and microbes, and especially in tropical ...
Cazzolla Gatti R.
core   +1 more source

Hemoglobin, hematology, intraerythrocytic phosphates and whole blood Bohr effect from lotic and lentic Hypostomus regani populations (São Paulo-Brasil)

open access: yes, 1985
1. 1. Hemoglobin electrophoretic pattern, whole blood Bohr effect, intraerythrocytic phosphates and some hematological parameters were determined and compared between lotic and lentic Hypostomus regani specimens. 2. 2.
Val, Adalberto Luis   +7 more
core   +1 more source

The influence of pH and temperature on benthic chlorophyll-a: Insights from SHAP-XGBoost and random forest models

open access: yesEcological Informatics
Biological threats to river health relate to algal biomass, for which benthic chlorophyll–a (chl–a) is an indicator; consequently, predicting chl–a helps understand ecosystem dynamics.
Sangar Khan   +9 more
doaj   +1 more source

Estudio taxonómico preliminar de la ficoflora planctónica en la zona aluvial del Río Colorado (La Pampa, Argentina)

open access: yesBiología Acuática, 2019
This work is part of a larger project on the study of algal biodiversity of a lotic system in La Pampa province. In this first stage we analyze the algal flora of samples collected during the summer season and autumn of 2010. The study area is located in
Andrea E. Biasotti   +2 more
doaj  

DNA Barcoding Reveals a Critical Spawning Ground in the Paranapanema River Basin, Southern Brazil

open access: yesEcologies
Hydropower plants have significant impacts on aquatic biodiversity, particularly on migratory fish species. Effectively managing these impacts requires a comprehensive understanding of fish reproduction and recruitment within altered river systems, which
Thiago S. Depintor   +3 more
doaj   +1 more source

Comparative study on the hydrographical status in the lentic and lotic ecosystems

open access: yes, 2017
The objective of this study is to assess the hydrography in the lentic and lotic ecosystems. According to this study, the Water Quality Index of lentic ecosystem is highest in the Kukkarahalli lake (106.32), followed by Karanji lake (97.42), Varuna lake (
Padmanabha B   +2 more
core   +1 more source

Comparing Aquatic Environmental DNA Collection Methods Across a Diel Cycle in a Lotic System

open access: yesEnvironmental DNA
Environmental DNA (eDNA) sampling often requires a single sample collected at one point in time—a snapshot approach that provides limited information on biodiversity across temporal scales. To address this limitation, water samples were collected over 25 
Camden E. Oathout   +3 more
doaj   +1 more source

Cladocera fauna composition in a river-lagoon system of the upper Paraná River floodplain, with a new record for Brazil

open access: yesBrazilian Journal of Biology
Cladocera communities were studied in lotic and lentic environments of the Upper Paraná River floodplain, State of Mato Grosso do Sul, Brazil. A total of 63 species of Cladocera were identified in 108 samples.
M. Serafim Jr.   +4 more
doaj   +1 more source

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