The Montes Claros Karst is located on the eastern margin of Bambuí Basin, one covers São Francisco Craton affected by Brasiliano Event, which deformed limestones Lagoa do Jacaré Formation, creating a westward folding system and pair fractures F1 (NNE-SSW) F2 (WNW-ESE). These structures control circulation water in limestone massifs, leading to development karst. main features karst landscape ar...

Penelitian ini bertujuan untuk membandingkan kondisi edafik, hubungan antara edafik dan keanekaragaman organisme tanah, serta perbedaan tanah pada berbagai ekosistem rhizosfer gulma Siam (Chromolaena odorata) yang tumbuh di lahan vulkanik, pesisir, karst. dilakukan dengan mengambil sampel dari karst, pesisir Daerah Istimewa Yogyakarta; mengamati komposisi laboratorium, yaitu collembola, nematod...

agh darreh tailing dam located in 23 km north of takab, west azarbayjan province is used for disposal of mine tailings. the tailing dam and its reservoir were constructed on gypsiferous marlstones. this is emphasis on geotechnical and environmental importance of the site. although construction of dams on gypsum rocks were not yet prohibited, but the dissolution of gypsum in contact with water i...

Several Geographic Information Systems (GIS)-based Karst Feature Databases (KFDs) have been established in many karst regions and countries (Cooper et al., 2001; Florea et al., 2002; Lei et al., 2001). However, the absence of comprehensive database models and standard metadata impeded the data compatibility and management (Gao et al., 2005a). A KFD has been developed in Minnesota in the past fe...

Norway spruce (Picea abies (L.) Karst.) seedlings growing in a growth pouch system were used to investigate the effects of the ectomycorrhizal fungus Hebeloma crustuliniforme (Bull. ex St. Amans) Quél. and various Cs/K ratios on the uptake of (134)Cs, expressed as a percentage of the total amount of (134)Cs supplied. The amount of (134)Cs taken up by seedlings increased with increasing Cs/K rat...

To explore soil nutrients and moisture changes in different karst mountain agroforestry, the plateau mountains of Southern China Karst, we used secondary tree irrigation forest (C) as a reference for our study selected four mixed agroforestry species (walnut + maize potato (HYM), walnut (HTY), poplar ryegrass (YSH), (YMH)) comparison. First, change characteristics were monitored situ field. Sec...

Karst aquifers are a particular type of groundwater system that supplies drinking water in Puerto Rico, as well as in several U.S. regions and around the world. The karst aquifers contain cave systems that are vulnerable to contamination from toxic chemicals, such as TCE. This is because these contaminants tend to be trapped in the rock formations as nonaqueous phase liquids (known as NAPLs) an...

A new subgenus and new species of anophthalmic trechine beetles, Oodinotrechus (Pingleotrechus) yinae subgen. n., sp. n., is described and illustrated from a limestone cave called Chaotianyan in southern part of Guilin karst, northeastern Guangxi Zhuang Autonomous Region. The new taxon is very different from the Maolan-Mulun congeners belonging to the nominate subgenus Oodinotrechus (s. str.) U...

A new species of narrow-mouthed frog of Kaloula is described in the Nonggang National Nature Reserve, Sino-Vietnamese border region of southern China. Kaloula nonggangensis sp. nov. is distinguished from its congeners by a combination of the following characters: medium size (SVL 41.4-52.7 mm in 18 adult males, 52.2 mm in 1 female); smooth or slightly rough olive dorsum with irregular dark-gree...