نتایج جستجو برای: cave survey

تعداد نتایج: 378636  

2017
Enrico Lunghi Raoul Manenti Gentile Francesco Ficetola

Seasonality impacts species distributions through changes of the environmental conditions that affect the presence of individuals at a given place. Although the dynamics of cave microclimates are well known, only a few studies have evaluated the effects of such dynamics on non-strictly cave species. Here we assessed if species exploiting subterranean environments show changes in habitat occupat...

2010
Tanja Schulz-Mirbach Friedrich Ladich Rüdiger Riesch Martin Plath

Cave fish have rarely been investigated with regard to their inner ear morphology, hearing abilities, and acoustic communication. Based on a previous study that revealed morphological differences in the saccular otolith between a cave and two surface populations of Poecilia mexicana, we checked for additional differences in utricular and lagenar otoliths and tested whether different populations...

The cavability assessment of rock mass cavability and indicating the damage profile ahead of a cave-back is of great importance in the evaluation of a caving mine operation, which can influence all aspects of the mine operation. Due to the lack of access to the caved zones, our current knowledge about the damage profile in caved zones is very limited. Among the different approaches available, p...

Journal: :Environmental microbiology 2007
Jennifer L Macalady Daniel S Jones Ezra H Lyon

The sulfide-rich Frasassi cave system hosts an aphotic, subsurface microbial ecosystem including extremely acidic (pH 0-1), viscous biofilms (snottites) hanging from the cave walls. We investigated the diversity and population structure of snottites from three locations in the cave system using full cycle rRNA methods and culturing. The snottites were composed primarily of bacteria related to A...

2005
R. A. BEATTY

THE present paper records the results of some analyses of carotenoid material in cave detritus, carried out as part of a research on the causes of pigment lack in the cave fauna. There is reason to suppose that the ancestral pigment of the numerous unpigmented cavernicolous Crustacea was the carotenoid pigment astacin, since closely related above-ground species frequently contain this pigment. ...

2015
Surajit De Mandal Zothan Sanga Nachimuthu Senthil Kumar

The present study employed 16S rRNA amplicon sequencing to survey the prokaryotic microbiota on Farpuk Cave, revealing a diverse bacterial community with 4,021 operational taxonomical units (OTUs), mainly dominated by the genus Rhodococcus. Moreover, 18.17% of the OTUs were unclassified at the phylum level, suggesting the existence of novel bacterial species.

Journal: :FEMS microbiology ecology 2010
Lejla Pasić Barbara Kovce Boris Sket Blagajana Herzog-Velikonja

Karstic cave systems in Slovenia receive substantial amounts of organic input from adjacent forest and freshwater systems. These caves host microbial communities that consist of distinct small colonies differing in colour and shape. Visible to the naked eye, the colonies cover cave walls and are strewn with light-reflecting water droplets. In this study, the diversity of prokaryotes constitutin...

Journal: :Journal of environmental radioactivity 2002
G K Gillmore P S Phillips A R Denman D D Gilbertson

An investigation of radon levels in the caves of Creswell Crags, Derbyshire, an important Site of Special Scientific Interest (SSSI) shows that the Lower Magnesian Limestone (Permian) caves have moderate to raised radon gas levels (27-7800 Bq m(-3)) which generally increase with increasing distance into the caves from the entrance regions. This feature is partly explained in terms of cave venti...

Journal: :Journal of Japanese Association of Hydrological Sciences 2003

2016
Ying Qiu Junxing Yang Wansheng Jiang Xiaoli Chen Chao Bian Qiong Shi

In our previous work, we reported comparative genomics studies on 3 Sinocyclocheilus fishes, including the surface-dwelling S. graham (Sg), the semi-cave-dewlling S. rhinocerous (Sr) and the cave-restricted S. anshuiensis (Sa). Here, we performed a genomic survey on the immunity differences among the 3 fishes by combination of the genome and transcriptome data. Our results demonstrate that immu...

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