نتایج جستجو برای: bryophytes
تعداد نتایج: 1222 فیلتر نتایج به سال:
Artificial drainage (ditching) is widely used to increase timber yield in northern forests. When the drainage systems are maintained, their environmental impacts are likely to accumulate over time and along accompanying management, notably after logging when new forest develops on decayed peat. Our study provides the first comprehensive documentation of long-term ditching impacts on terrestrial...
Bryophytes are the oldest terrestrial plants in world, about 3000 taxon known to have medicinal properties. Plagiochila asplenioides (L.) Dumort, which is one kind of bryophytes, was examined this study. The antimicrobial, antioxidant, fatty acids, mineral analysis and some chemical properties extracts obtained from bryophyte were investigated. It determined that P. extract had a moderate effec...
Figure 1. Encalypta rhabdocarpa in the alpine region where high-intensity UV light can damage chlorophyll and DNA. Photo by Michael Lüth. Exposure to UV light has been hypothesized as a major deterrent of evolution to land. Both chlorophyll and DNA are easily damaged by high intensities of direct sunlight (Figure 1). In fact, it has been suggested that a major role of lignin, absent in bryophyt...
Vascular plants serve as target species for the evaluation of restoration success as they account for most of the plant species diversity and vegetation cover. Although bryophytes contribute considerably to the species diversity of meadows, they are rarely addressed in restoration projects. This project is a first step toward making recommendations for including mosses in alluvial floodplain re...
The definition of biogeographic regions provides a fundamental framework for a range of basic and applied questions in biogeography, evolutionary biology, systematics and conservation. Previous research suggested that environmental forcing results in highly congruent regionalization patterns across taxa, but that the size and number of regions depends on the dispersal ability of the taxa consid...
References are made to cytotoxic and/or antitumor compounds that have been isolated ansamitocin P-3 from Claopodium crispifolium (Hook.) Ren. & Card. and Anomodon attenuatus Hueb., or an associated actinomycete, and ohioensins and pallidisetums from Polytrichum spp. Several hundred collections, which have been obtained from temperate regions of North America during 1990 and 1991, are currently ...
Volcanic lava cave habitats are extreme environments. We carried out field investigations for five years and reported the results of bryophyte diversity in eight volcanic caves Jingpo Lake World Geopark, where largest underground China preserved. The as follows: (1) A total 230 quadrats were set up, 2041 specimens collected. belong to 272 species 107 genera 47 families, including 26 liverworts ...
As bryophytes present the capacity to colonize a wide range of habitats, including extreme environments (e.g., mine areas), we first checked global response heavy metals (HM) by systematic review. This analysis found i) lack studies in polluted environment and ii) resulted trend photochemical efficiency decrease when faced metals. Secondly, characterized photoprotective responses four metallico...
Bryophytes, due to their poikilohydric nature and peculiar traits, are useful versatile organisms for studies on metal accumulation detoxification in plants. Among bryophytes, the liverwort Marchantia polymorpha is an excellent candidate as a model organism, having key role plant evolutionary history. In particular, M. axenic cultivation of gametophytes offers several advantages, such fast grow...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید