KEANEKARAGAMAN PTERIDOPHYTA PDF

Failed to load the PDF. Please continue with PDF download. Find: Previous. Next. Highlight all. Match case. Presentation Mode Open Print Download. Keanekaragaman Jenis Tumbuhan Paku (Pteridophyta) di Jalur Pendakian Selo Kawasan Taman Nasional Gunung Merbabu, Jawa Tengah. View Pteridophytes Research Papers on for free. bertujuan untuk mengumpulkan data dan informasi tentang keragaman jenis tumbuhan paku.

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Skip to main content. Log In Sign Up. Lembar kerja adlaah salah satu media belajar dalam sisitem pembelajaran Kontruktivis. A review on ethnomedicinally important pteridophytes of India. Ethnopharmacological relevance Pteridophytes have been considered ptedidophyta excellent source of medicine since ancient times and remain underexplored in ethnobotanical aspects when compared to other vascular plants. Hence, an attempt has been Hence, an attempt has been made to compile medicinally important pteridophytes used by keabekaragaman ethnic minorities and local people in India.

Materials and methods Relevant information on the uses of pteridophytes was extracted from scientific journals local, regional, and internationalpteriodphyta, book chapters, conference proceedings, Keanekaaragaman.

Recent and accepted names of plants were validated using standard nomenclature databases. Results In total, species of pteridophytes are enumerated in this review which are used to treat ailments. Pteridaceae was recorded with highest number of medicinally important species 57followed by Polypodiaceae, Dryopteridaceae, Thelypteridaceae, and Aspleniaceae with 36, 27, 22, and 21 species respectively.

Conclusions The use of medicinal plants in the primary healthcare of humans and livestock has been documented since ancient times, and they offer a useful source of new therapeutics.

Pteridophytes Research Papers –

While pteridophytes have considerable importance in traditional pharmacopoeias, scientific studies on pharmacology of this group are scanty. Hence, studies on the phytochemistry and pharmacology of medicinally important pteridophytes with more citations may reveal active principles that can be further developed into novel therapeutic agents.

Records of indigenous medicinal knowledge about pteridophytes need to be given top priority to aid the protection of such knowledge before they vanish from present day traditional healers. Volumen especial editado en Acta Botanica Malacitana http: Metode yang digunakan adalah metode jelajah sigi yang dilakukan dengan cara menyusuri kawasan Taman Hutan Raya Djuanda setiap menemukan paku dengan jenis berbeda.

Paku yang ditemukan dicatat nama jenis, waktu keannekaragaman, tempat, dan diambil keahekaragaman dari sampel itu sendiri. Djuanda berjumlah 20 jenis yaitu: Heterogonium pinnatum, Asplenium nidus, Blechnum orientale, Blechnum articulate, Blechnum vestitum, Blechnum blechnoides, Davallia denticulate, Pteridium caudatum, Pteridium aquilinum, Angiopteris evecta, Marsilea crenata, Nephrolepsis biserrata, Pyrrosia pilloselades, Belvisia revoluta, Pityrogramma calomelanos, Pityrogramma austroamericana, Adiantum cuneatum, Pteris biaurita, Adiantum hispiludum, dan Selaginella selaginoides.

New Distribution Record of Lepisorus nudus Hook.

Pteridophytes

Ching and Microsorum membranaceum D. The present communication reports Lepisorus nudus Hook. Don Ching as a new distributional records for Gujarat state. These ferns are restricted to the central and southern parts of Gujarat in These ferns are restricted to the central and southern parts of Gujarat in northern Western Ghats.

Detailed descriptions and photographs are provided here for each species. An intensive field survey was carried out from the hilly regions, plains of different climatic regimes and agricultural land of Gujarat state. About 23 species were collected from Gujarat state, from which eight species viz.

Link, Adiantum caudatum L. Increasing anthropogenic pressure, destruction of forest ecosystem and development of infrastructure facilities including road widening and rainwater harvesting program by deepening of the natural ponds are additional reasons for declining terrestrial and aquatic pteridophyte diversity respectively.

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Our survey concludes that E. Therefore, there is an urgent need of in situ conservation by developing action plans in collaboration with the state forest department.

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Relocation of Ophioglossum gramineum Willd Ophioglossaceae. Extensive field work in hilly regions, plain lands, wet lands, agricultural fields and arid regions of the Gujarat state was carried out in all 33 districts in From the total collection, five species differed from the earlier From the total collection, pteridopyyta species differed from the earlier reported species.

On critical study and detailed analysis they were identified as Ophioglossum parvifolium Grev. Moore, Tectaria coadunata Wall. All newly identified species are found to be new record for the Gujarat state.

Previous studies reported other species of Ophioglossum and Aleuritopteris while genera like Athyrium, Salvinia and Tectaria is reported for the first time from Gujarat forest.

keeanekaragaman Present paper recommends further extensive studies to survey the diversity of pteridophytes in Gujarat. Moreover, Aleuritopteris bicoloris common in different forests while Tectaria coadunata is reported from only at two locations and possibly it may occur at other locations.

The fossil Osmundales Royal Ferns —a phylogenetic network analysis, revised taxonomy, and evolutionary classification of anatomically preserved trunks and rhizomes.

The Osmundales Royal Fern order originated in the late Paleozoic and is the most ancient surviving lineage of leptosporangiate ferns. In contrast to its low diversity today less than 20 species in six generait has the richest fossil In contrast to its low diversity today less than 20 species in six generait has the richest fossil record of any extant group of ferns. The structurally preserved trunks and rhizomes alone are referable to more than fossil species that are classified in up to 20 genera, four subfamilies, and two families.

This diverse fossil record constitutes an exceptional source of information on the evolutionary history of the group from the Permian to the present. However, inconsistent terminology, varying formats of description, and the general lack of a uniform taxonomic concept renders this wealth of information poorly accessible. To this end, we provide a comprehensive review of the diversity of structural features of osmundalean axes under a standardized, descriptive terminology.

A novel morphological character matrix with 45 anatomical characters scored for 15 extant species and for fossil operational units species or specimens is analysed using networks in order to establish systematic relationships among fossil and extant Osmundales rooted in axis anatomy.

The results lead us to propose an evolutionary classification for fossil Osmundales and a revised, standardized taxonomy for all taxa down to the rank of sub genus. We introduce several nomenclatural novelties: In addition, we consider Millerocaulis stipabonettiorum a possible member of Palaeosmunda and Millerocaulis estipularis as probably constituting the earliest representative of the Todea- Leptopteris lineage subtribe Todeinae of modern Osmundoideae.

Establishing which factors determine species distributions is of major relevance for practical applications such as conservation planning. The Amazonian lowlands exhibit considerable internal heterogeneity that is not apparent in existing The Amazonian lowlands exhibit considerable internal heterogeneity that is not apparent in existing vegetation maps.

We used ferns as a model group to study patterns in plant species distributions and community composition at regional and landscape scales.

Fern species composition and environmental data were collected in plots of 9 2 m distributed among four sites in Brazilian Amazonia. In-terplot distances varied from 1 to ca km. Major factors associated with species composition varied among sites, difference in cation concentration was a strong predictor of floristic dissim-ilarity in those sites with pronounced heterogeneity in cation concentration.

Pyeridophyta in clay content was the most relevant variable in sites with uniform cation concentrations. In every case, environmental differences were invariably better than geographic distances in predicting species compositional differences. Our results are consistent with the ideas that: Therefore, site-specific relationships among variables can mask the bigger picture and make it more difficult to unravel the factors structuring plant communities in Amazonia.

Abstract in Portuguese is available in the online version of this article. Sample effort reduction vs.

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The large area covered by the Amazonian domain and the limited financial support for biodiversity studies demand efficient research programs. Aiming to evaluate the consequences of reduced sampling effort on the retention of ecological Aiming to evaluate the consequences of reduced sampling effort on the retention of ecological information, we tested how differences in plot width affect the perceived relationship between environmental variation and the composition of the pteridophyte community in Central Amazonia.

Measures of slope, canopy openness and soil clay content were taken in 37 terra-firme forest plots. All pteridophyte individuals were identified and mapped according to three sample strips. We tested the effects of environmental variables on pteridophyte composition of x 2. The reduction of plot width from 2. This would reduce the number of sampled species from 52 to For all tested plot widths, community composition was associated with soil clay content and was not associated with the terrain slope.

The effect of canopy openness on pteridophyte species composition was not consistent among sample sizes. These may be related to the relatively lower importance of light availability in determining community structure at the studied spatial scale. We concluded that the smallest plots were informative enough to detect the main gradients of composition and their association to environmental factors. This would allow a reduction in total costs, or the allocation of available budget to more plots, which could increase the power of the statistical analyses, reduce the confidence intervals and increase probability of detecting more species.

Tumbuh-tumbuhan merupakan makhluk hidup yang berperan penting dalam kehidupan.

Kemampuan tumbuhan dalam memproduksi bahan makanan dan oksigen, serta kemampuan lainnya yang bermanfaat baik bagi hewan, lingkungan, maupun manusia. Keaneka ragaman tumbuhan yang tersebar luas di berbagai belahan dunia khususnya di Indonesia merupakan salah satu tanda-tanda kebesaran Allah SWT. Salah satu contoh tanda-tanda kebesaran Allah tersebut dapat diamati pada tumbuhan paku. Menurut Schuettpelz and Pryertumbuhan paku Pteridophyta merupakan tumbuhan berpembuluh yang menghasilkan spora sebagai alat penyebaran keturunannya.

Lebih lanjut, Nurchayati menyatakan bahwasanya tumbuhan paku merupakan tumbuhan berpembuluh yang paling primitif daripada tumbuhan berpembuluh lain. Keberagaman tumbuhan paku dapat dijumpai di lingkungan sekitar, baik dari segi morfologi, habitat, hingga manfaat dari tumbuhan paku tersebut.

Menurut Ewusie dalam Widhiastuti, dkkkelimpahan dan penyebaran tumbuhan paku sangat tinggi terutama di daerah hutan tropis. Tumbuhan paku juga banyak terdapat di hutan pegunungan. Menurut Chapmanterdapat lebih dari Lebih lanjut, De Winter dan Amoroso menyatakan bahwasanya 4.

Differences in the photosynthetic plasticity of ferns and Ginkgo grown in experimentally controlled low [O 2 ]: Background and Aims Fluctuations in [CO 2 ] have been widely studied as a potential driver of plant evolution; however, the role of a fluctuating [O 2 ]: The present study aimed to investigate the The present study aimed to investigate the inherent physiological plasticity of early diverging, extant species following acclimation to an atmosphere similar to that across the Triassic—Jurassic mass extinction interval TJB, approx.

Key Results TJB acclimation caused significant reductions in the maximum rate of carboxylation V Cmax and the maximum electron flow supporting ribulose-1,5-bisphosphate regeneration J max in all species, yet this downregu-lation had little effect on their light-saturated photosynthetic rate A sat. Ginkgo was found to photorespire heavily under ambient conditions, while growth in low [O 2 ]: Conclusions It is argued that the observed photodamage reflects the inability of Ginkgo to divert excess photosyn-thetic electron flow to sinks other than the downregulated C 3 and the diminished C 2 cycles under low [O 2 ]: