In Australia the frog family Microhylidae is largely restricted to tropical rainforests of the Wet Tropics region in the northeast of the country, but in that region the family is diverse. Only one species, Cophixalus ornatus, is widespread in the Wet Tropics but there has been suspicion that it may comprise multiple species. A recent study (Hoskin et al. 2011) assessed genetic and phenotypic v...

Leishmaniasis and Chagas disease afflict the poorest countries in the world. The Brazilian flora represents a rich source for the screening of potential antiparasitic compounds. In this work, we tested the total alkaloid and ethanol extracts of nine different plants from Brazilian families which produce isoquinoline alkaloids, to determine their in vitro antiparasitic effect against L. chagasi ...

Roads, bridges, and dikes constructed across salt marshes can restrict tidal flow, degrade habitat quality for nekton, and facilitate invasion by non-native plants including Phragmites australis. Introduced P. australis contributes to marsh accretion and eliminates marsh surface pools thereby adversely affecting fish by reducing access to intertidal habitats essential for feeding, reproduction,...

In southern Taiwan, rivers sporadically cease to flow and dry up in winter. The exposed riverbeds are very vulnerable wind erosion. strong northeast monsoon often induces serious estuarine sand drift fugitive dust, which cause damages agricultural crops, human health infrastructures. Giant reed (Arundo formosana), common (Phragmite australis) the wild sugarcane (Saccharum spontaneum) pioneer gr...

we studied cu concentration on part of aras riparian vegetation. cu was selected as an index metal due to polluting the aras river through agarak copper mines drainage. results of cu concentration in indicator plant have been examined using spss16. considering the situation of the copper mines as well as the habitat of the indicator plant, two stations before and after the exit of the industria...

institutions is anything to judge by (Clarke, 1980), then Ha rlingen supervision. The answer depends on what Price binary options Terra Bella thinks the other party would do. In some studies research subjects are told that they can expect to select freely from among several available consumer Discount binary options indicator Harlingen.

Understanding the functional relationship between greenhouse gas fluxes and environmental variables is crucial for predicting the impacts of wetlands on future climate change in response to various perturbations. We examined the relationships between methane (CH4) emission and temperature in two marsh stands dominated by the Phragmites australis and Cyperus malaccensis, respectively, in a subtr...

Seagrass meadows are highly productive ecosystems that provide ecosystem services to the coastal zone but are declining globally, particularly due to anthropogenic activities that reduce the quantity of light reaching seagrasses, such as dredging, river discharge and eutrophication. Light quality (the spectral composition of the light) is also altered by these anthropogenic stressors as the dif...

Urbanization can considerably affect water reservoirs by, inter alia, input, and accumulation of contaminants including metals. Located in the course of River Cybina, Maltański Reservoir (Western Poland) is an artificial shallow water body built for recreation and sport purposes which undergoes restoration treatment (drainage) every 4 years. In the present study, we demonstrate an accumulation ...