Results 121 to 130 of about 519,530 (231)

Effect of Indian Ocean Dipole signal on freshwater cyanobacterial dynamics [PDF]

open access: yes, 2016
The proliferation of freshwater cyanobacteria is a serious environmental problem that often reduces water quality. In this study, we observed the possible influence of the Indian Ocean Dipole (IOD), represented by the Dipole Mode Index (DMI), on the ...
Gea-Jae Joo; Department of Biology, Pusan National University   +1 more
core   +1 more source

BIOECOLOGÃ�A DE LA RAYA DE AGUA DULCE Potamotrygon magdalenae (Duméril, 1865) (MYLIOBATIFORMES) EN LA CIÉNAGA DE SABAYO, GUAIMARAL, COLOMBIA BIOECOLOGY OF THE FRESHWATER STINGRAY Potamotrygon magdalenae (Duméril, 1865) (MYLIOBATIFORMES) FROM THE CIÉNAGA DE SABAYO, GUAIMARAL, COLOMBIA

open access: yesRevista U.D.C.A Actualidad & Divulgación Científica, 2011
A pesar de la representatividad de Potamotrygon magdalenae en Colombia, por encontrarse a lo largo de la cuenca del río Magdalena y sus afluentes, esta raya no ha sido objeto de estudios previos, desconociéndose la mayor parte de sus aspectos bio ...
Herly Bibiana Ramos-Socha   +1 more
doaj  

Insectivory in Potamotrygon signata (Chondrichthyes: Potamotrygonidae), an endemic freshwater stingray from the Parnaíba River basin, northeastern Brazil

open access: yesBrazilian Journal of Biology
Potamotrygon signata is an endemic freshwater stingray species in the Parnaíba River basin, Brazil. After its original description, only citations in systematic lists were recorded in the literature and the biology of the species remains unknown ...
G. Moro, P. Charvet, RS. Rosa
doaj   +1 more source

Statutory protection of freshwater flora and fauna in Britain [PDF]

open access: yes, 2010
The conservation of freshwater habitats and the species they harbourdemands a diversity of approaches. Over the past 50 years, the emphasisof conservationists in general has gradually changed from one merely ofpreservation to one of active management and
Margaret A. Palmer   +2 more
core  

Investigating the Unknown: A Study of Freshwater Stingray Anatomy and an Evaluation of the Effectiveness of Routine Diagnostic Imaging Techniques

open access: yes, 2010
The goal of this Master\u27s thesis project was to develop and create a complete and comprehensive atlas of freshwater stingray anatomy by compiling information gathered through dissection, ultrasound, x-ray, MRI and CT scans.
Brown, Holly M
core   +1 more source

Freshwater biological research in Mexico; A brief historical review [PDF]

open access: yes, 2010
The first notice of freshwater biological observations carried out inMexico is contained in the ancient nahuatl codexes. In these, freshwaterfishes, waterfowl and aquatic insects are depicted, showing capturemethods, techniques and limnological ...
Elva G. Escobar-Briones   +1 more
core  

Plankton associated with medusae of the freshwater jellyfish Craspedacusta sowerbyi (Lankester) in a Thames backwater [PDF]

open access: yes, 2010
Freshwater jellyfish Craspedacusta sowerbyi occur erratically in the BritishIsles. The first specimens were found in 1880, in the old botanical gardens atRegents Park, London.
Jim Green
core  

A new pathway of freshwater methane emissions and the putative importance of microbubbles [PDF]

open access: yes, 2013
Continental freshwater systems have now been shown to be globally significant sources of methane, but there are still large uncertainties associated with freshwater methane fluxes.
Paul del Giorgio; Biological sciences, UQAM   +1 more
core   +3 more sources

Adapting to climate change: implications for freshwater biodiversity and management in the UK

open access: yes, 2009
Current work on adaptation responses for conservation management in the face of predicted climate change has a distinctly terrestrial focus.  Existing evidence for the potential impact of climate change on freshwater ecosystems indicates that it is ...
Stewart Jonathon Clarke; Natural England
core   +2 more sources

Freshwater phytoplankton ecology: the British contribution in retrospect [PDF]

open access: yes, 2012
The ecology of the freshwater phytoplankton - communities of freely-dispersed, plant-functioning microbes - has attracted attention in Britain for over 100 years.  Here an outline history is given, with reference to persons and places, types of ...
Jack Talling; PhD DSc
core   +1 more source

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