نتایج جستجو برای: crustose lichens

تعداد نتایج: 2459  

Journal: :Journal of bacteriology 2012
Seung Chul Shin Do Hwan Ahn Jong Kyu Lee Su Jin Kim Soon Gyu Hong Eun Hye Kim Hyun Park

The endosymbiotic bacterium Sphingomonas sp. strain PAMC 26605 was isolated from Arctic lichens (Ochrolechia sp.) on the Svalbard Islands. Here we report the draft genome sequence of this strain, which could provide further insights into the symbiotic mechanism of lichens in extreme environments.

Journal: :Applied and environmental microbiology 2011
Alexandra A Mushegian Celeste N Peterson Christopher C M Baker Anne Pringle

Symbioses are unique habitats for bacteria. We surveyed the spatial diversity of bacterial communities across multiple individuals of closely related lichens using terminal restriction fragment length polymorphism (T-RFLP) and pyrosequencing. Centers of lichens house richer, more consistent assemblages than species-poor and compositionally disparate lichen edges, suggesting that ecological succ...

Journal: :Environmental monitoring and assessment 2013
Jens Søndergaard

This study investigated dispersion and bioaccumulation of mining-related elements from an open-pit olivine mine at Seqi in Southwest Greenland (64° N) using lichens (Flavocetraria nivalis), seaweeds (Fucus vesiculosus), mussels (Mytilus edulis) and fish (Myoxocephalus scorpius). The mine operated between 2005 and 2009, and samples were taken every year within a monitoring area 0-17 km from the ...

Journal: :journal of medical microbiology and infectious diseases 0
tahereh valadbeigi ilam universty, ilam, iran ali mohammad bahrami ilam university, ilam, iran minoo shaddel etemadzade av, fatemi st, tehran, iran

introduction: natural products have been the most successful source of potential drug leads. one of them is lichens, which have been used since antiquity as natural sources of drugs. the aim of this study was to investigate the antibacterial and antifungal activity of different extracts of the iranian lichens in ilam province. methods: the aqueous, acetone, and methanol extracts of 6 lichen spe...

Journal: :Annals of botany 2007
Johannes H C Cornelissen Simone I Lang Nadejda A Soudzilovskaia Heinjo J During

BACKGROUND Recent decades have seen a major surge in the study of interspecific variation in functional traits in comparative plant ecology, as a tool to understanding and predicting ecosystem functions and their responses to environmental change. However, this research has been biased almost exclusively towards vascular plants. Very little is known about the role and applicability of functiona...

2017
Thomas Kiebacher Christine Keller Christoph Scheidegger Ariel Bergamini

Sylvo-pastoral systems are species-rich man-made landscapes that are currently often severely threatened by abandonment or management intensification. At low tree densities, single trees in these systems represent habitat islands for epiphytic cryptogams. Here, we focused on sycamore maple (Acer pseudoplatanus) wooded pastures in the northern European Alps. We assessed per tree species richness...

2012

Lichens, fungi, and bryophytes are frequently referred to as lower plants, non-vascular plants, or cryptogams. All terms are partially incorrect but used for convenience. Strictly speaking only bryophytes are plants. Although lacking conductive tissues, they are photosynthetic. Fungi are not photosynthetic, typically penetrating their substrate as threads of cells. Lichens are fungi in close as...

Journal: :Blue Jay 1955

Journal: :Environmental pollution 2007
Linda H Geiser Peter N Neitlich

Human activity is changing air quality and climate in the US Pacific Northwest. In a first application of non-metric multidimensional scaling to a large-scale, framework dataset, we modeled lichen community response to air quality and climate gradients at 1416 forested 0.4 ha plots. Model development balanced polluted plots across elevation, forest type and precipitation ranges to isolate pollu...

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