Results 51 to 60 of about 477 (162)

Calcium carbonate and phosphorus interactions in inland waters

open access: yesLimnology and Oceanography Letters, Volume 10, Issue 2, Page 158-178, April 2025.
Abstract Phosphorus, an element essential to all life, is impacted by calcium carbonate (CaCO3) co‐precipitation and dissolution dynamics across aquatic ecosystems. Changes to climate, hydrology, and eutrophication, coupled with differences in terminology related to naming CaCO3‐producing ecosystems (i.e., chalk, carbonate, karst, travertine), point to
Jessica R. Corman
wiley   +1 more source

Tracing Groundwater‐Surface Water Interactions in a Volcanic Maar Lake Using Stable Isotopes and 222Rn

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 129, Issue 12, December 2024.
Abstract Isotope hydrological studies to understand groundwater‐surface water interactions in tropical, high‐elevation catchments are limited. These interactions are important in controlling lake water residence time, aqueous biogeochemistry, and water availability for downstream communities and ecosystems. To better comprehend the complexity of spatio‐
Germain Esquivel‐Hernández   +8 more
wiley   +1 more source

Microbialites on the northern shelf of Lake Van, eastern Türkiye#: Morphology, texture, stable isotope geochemistry and age

open access: yesSedimentology, Volume 71, Issue 3, Page 850-870, April 2024.
ABSTRACT Lake Van, the world's largest alkaline lake, hosts some of the largest microbialite towers worldwide, which are considered as modern analogues of ancient stromatolites. This study investigates the links between microbialite evolution, geology, climate and hydrology, and the role of biotic and abiotic processes in microbialite growth and ...
M. Namık Çağatay   +3 more
wiley   +1 more source

Spirostomum teres: A Long Term Study of an Anoxic-Hypolimnion Population Feeding upon Photosynthesizing Microorganisms

open access: yesActa Protozoologica, 2020
The pelagic / anoxic hypolimnion population of Spirostomum teres was investigated as a part of the long-term ciliates’ monitoring (2003–2016) in an oligo- to mesotrophic monomictic hyposaline crater ...
Miroslav Macek   +8 more
doaj   +1 more source

Long term picoplankton dynamics in a warm-monomictic, tropical high altitude lake

open access: yesJournal of Limnology, 2009
Long term analyses of the microbial loop, centred on the picoplankton dynamics, were carried out over a five-year (1998 to 2002) period in Lake Alchichica (Puebla, Mexico), a high altitude tropical athalassohaline lake.
Alfonso LUGO VÁZQUEZ   +5 more
doaj   +1 more source

Using Wavelet Analysis to Examine Long-Term Variability of Phytoplankton Biomass in the Tropical, Saline Lake Alchichica, Mexico

open access: yes, 2022
The phytoplankton biomass (chlorophyll-a, Chl-a) is directly related to the total production of lakes. Chl-a in temperate lakes oscillates on an annual scale.
Miroslav Macek   +4 more
core   +1 more source

Preliminary investigations on picoplankton-related precipitation of alkaline-earth metal carbonates in meso-oligotrophic lake Geneva (Switzerland)

open access: yesJournal of Limnology, 2013
In the course of a routine water-quality survey in meso-oligotrophic lake Geneva (Switzerland), suspended matter was collected by filtration on 0.2 μm membranes in July and August 2012 at the depth of maximal chlorophyll a (Chl a) concentration (2 mg m–3)
Jean-Michel Jaquet   +2 more
doaj   +1 more source

Pollen determination from sediment core of Lake Alchichica in Mexico

open access: yes
The pollen samples were collected from a 57-cm-long sediment core retrieved from Lake Alchichica (19° 24' 38 N, 97° 24' 14 W, 2322 masl) at a water depth of ~ 60 m using a Uwitec® coring device equipped with a 9-cm coring tube. A total of 39 wet sediment
Rantala, Marttiina V   +9 more
core   +1 more source

Candona alchichica Acosta & Prat & Ribera & Michailova & Hernández-Fonseca & Alcocer 2017, sp. n.

open access: yes, 2017
Chironomus alchichica Acosta & Prat, sp. n. Type material Holotype: male (preparations in Euparal), obtained by breeding from larvae collected in Lake Alchichica (50 m deep), state of Puebla, Mexico (19°24.7’ N, 97°24.0’ W), 3.VI.2012 (CRBA 67541 ...
Prat, Narcís   +5 more
core   +1 more source

Ciliate food vacuole content and bacterial community composition in the warm-monomictic crater Lake Alchichica, México [PDF]

open access: yesFEMS Microbiology Ecology, 2011
To evaluate trophic relationships between ciliates and bacterioplankton during the stratification period in a lake, samples from three different layers [the upper part of the metalimnion (UM), the base of the metalimnion (BM) and the hypolimnion] were studied. The autotrophic picoplankton numbers, phylogenetic composition of heterotrophic picoplankton (
Fernando, Bautista-Reyes   +1 more
openaire   +2 more sources

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