The underground uranium mine Königstein (Saxony, Germany), currently in the process of remediation, represents an underground acid mine drainage (AMD) environment, that is, low pH conditions and high concentrations of heavy metals including uranium, in which eye-catching biofilm formations were observed. During active uranium mining from 1984 to 1990, technical leaching with sulphuric acid was ...

Abstract The temperate soft coral Dendronephthya australis has been listed as Endangered in NSW, Australia, owing to its restricted geographic range, rapidly declining populations, and a number of escalating threats. Research assess practical methods for aquarium cultivation D. rehabilitation wild populations is considered high priority. Previous attempts at restoration by transplanting fragmen...

The red snapper (Lutjanus campechanus) has one of the most valued fisheries in southeastern United States and been largely studied for its aquaculture potential with varied results that revealed production challenges. This study focused on addressing challenges larval rearing juvenile this species. Broodstock fish were acclimated a 60 m3 tank equipped recirculating system (RAS) temperature cont...

This study assessed zooplankton density and Chl-a amount to understand their spatial seasonal variation in Lake Malombe. Samples were collected for analysis during the hot, dry season (HDS) cool, dry, windy (CDWS). The identified Tropodiaptomus cunningtoni (TC), Mesocyclops aequatorialis (MAA), Thermocyclops neglectus (TN), Bosmina longirostris (BL), Diaphanosoma spp. (DS), Nauplii. These group...

Pollen shedding can produce rapid, abundant exchanges of nutrient-rich biomass from plant canopies to the surface. When pollen deposits onto understory plants, it be washed off during storms via throughfall (a drip flux) and stemflow flux down stems). deposition may also alter organismal community on surfaces, changing other biological particulates transported by stemflow. We report concentrati...

FIFTEEN years ago, Mark Welch and Meselson published a landmark paper that threw down a gauntlet to evolutionary biologists. They presented the first compelling molecular evidence that a large group of animals called bdelloid rotifers had been evolving for many millions of years without sex (Mark Welch and Meselson 2000). Their findings challenged the importance of sexual reproduction for long-...

Among small organisms, it is often difficult to distinguish native from alien species because we cannot easily determine where they originate. They are often labelled cosmopolitan or cryptogenic, euphemisms that indicate that we are uncertain of their origin. This lack of information obscures our understanding of biogeography and ecosystem functioning, thus limiting our ability to control biolo...