Results 21 to 30 of about 29,153 (207)

Distribution of invasive bivalves in Paraguay: filling the gaps in the heart of South America [PDF]

open access: yesActa Limnologica Brasiliensia
La Plata Basin is the second largest hydrographic system in South America but the most impacted by invasive species of molluscs in the continent. Paraguay is a land-surrounded South American country with scarce information about malacological fauna.
Igor Christo Miyahira   +3 more
doaj   +1 more source

Top‐down effects of filter‐feeding fish and bivalves moderate bottom‐up effects of nutrients on phytoplankton in subtropical shallow lakes: An outdoor mesocosm study

open access: yesEcology and Evolution, 2023
Biomanipulation has been widely used in the ecological restoration of eutrophic lakes for decades. However, biomanipulation is prone to failure if external nutrient loads are not reduced.
You Zhang   +8 more
doaj   +1 more source

Stable oxygen and carbon isotope compositional fields for skeletal and diagenetic components in New Zealand Cenozoic nontropical carbonate sediments and limestones: a synthesis and review [PDF]

open access: yes, 1996
The stable oxygen isotope composition (d¹⁸O) of a precipitated carbonate depends mainly on the isotope composition, salinity, and temperature of the host fluid, whereas the stable carbon isotope composition (d¹³C) reflects the source of CO2 for ...
Nelson, Campbell S., Smith, Abigail M.
core   +2 more sources

An enigma: A meta-analysis reveals the effect of ubiquitous microplastics on different taxa in aquatic systems

open access: yesFrontiers in Environmental Science, 2022
Microplastics are ubiquitous in aquatic ecosystems globally, with tropical freshwater systems underrepresented in the literature. The ubiquity of microplastics may affect the feeding, growth, reproduction, and survival of organisms in aquatic systems ...
Sydney Moyo
doaj   +1 more source

Environmental controls on the stable isotopic composition of Mercenaria mercenaria: Potential application to paleoenvironmental studies [PDF]

open access: yes, 2003
We have investigated the environmental controls of seasonally resolved records of oxygen and carbon isotopes of modern Mercenaria mercenaria bivalves collected live from five coastal sites along the east coast of North America.
Aharon   +47 more
core   +1 more source

Birth, life and death of the Pannonian Lake [PDF]

open access: yes, 1990
The Miocene-Pliocene Pannonian Lake formed in an extensional basin system behind the compressional arc of the Carpathians. Its size and depth were comparable to those of the Caspian Sea.
Kázmér, Miklós
core   +1 more source

Filtration, assimilation and elimination of microplastics by freshwater bivalves

open access: yesCase Studies in Chemical and Environmental Engineering, 2020
The bivalve Anodontites trapesialis, a filter feeder, was assessed as a potential sentinel organism for freshwater microplastic contamination in the South American Pantanal region.
Andressa Carla Moreschi   +6 more
doaj   +1 more source

Dispersal of Freshwater Bivalves [PDF]

open access: yesNature, 1882
IN the late Mr. Darwin's interesting contribution upon this subject (NATURE, vol. xxv. p. 529), mention is made of the fact that the newts in Mr. Norgate's aquarium “frequently have one foot caught by a small freshwater bivalve (Cyclas cornea?).” It is, perhaps, worth calling your readers' attention to a passage which occurs in Mr.
openaire   +1 more source

Potassium and Rubidium Uptake in Freshwater Bivalves [PDF]

open access: yesJournal of Experimental Biology, 1990
ABSTRACTPotassium transport characteristics were investigated in three species of freshwater bivalves: a corbiculid, Corbiculafluminea, and two unionids, Carunculina texasensis and Ligumia subrostrata. Using 42K, all three were found to take up potassium from dilute artificial pondwater ([K+] about 0.05 mmol l−1). The influx (Ji) was 0.72 μequivg−1 dry
T. H. Dietz, R. A. Byrne
openaire   +1 more source

Physico-chemical variables determining the invasion risk of freshwater habitats by alien mollusks and crustaceans [PDF]

open access: yes, 2012
The aim of this study was to assess the invasion risk of freshwater habitats and determine the environmental variables that are most favorable for the establishment of alien amphipods, isopods, gastropods, and bivalves.
Früh, Denise   +2 more
core   +1 more source

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