Academic literature on the topic 'Pteridophyta Pteridophyta Epiphytes. Pteridophyta'
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Journal articles on the topic "Pteridophyta Pteridophyta Epiphytes. Pteridophyta"
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Ulum, Fuad Bahrul, and Dwi Setyati. "Ephypitic Ferns (Pteridophyta) from Raung Mount Banyuwangi, East Java Indonesia." Jurnal ILMU DASAR 16, no. 1 (June 16, 2015): 7. http://dx.doi.org/10.19184/jid.v16i1.1486.
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An investigation of epiphytic Pteridophytes diversity at Mount Raung, Banyuwangi, East Java Province, Indonesia, was carried out in 7 February 2015. As many as 11 Pteridophytes from 3 families had been identified based on their morphological chracteristic. Among them, four species of Family Aspleniaceae, including Asplenium confusum Tardieu & Ching, Asplenium nidus L., Asplenium salignum Blume, and Asplenium tenerumoides S.B.Andrews. Polypodiaceae include Leptochilus wrightii (Hooker & Baker) X. C. Zhang, Microsorum punctatum (L.) Copel., Pyrrosia bicolor ( Kaulf. ) Ching, and Schellolepis percussa (Cav.) Pic.Serm. Vittariaceae include Antrophyum formosanum Hieron., Vittaria ensiformis Sw., and Vittaria lineata (L.) Sm. which is the smallest specimen with less than 10 cm long.Keywords: Mount Raung, Pteridophyta, Epiphytic, Families.
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Ayatusa'adah, Ayatusa'adah, and Nor Apriyani Dewi. "INVENTARISASI TUMBUHAN PAKU (PTERIDOPHYTA) DI KAWASAN KAMPUS IAIN PALANGKA RAYA SEBAGAI ALTERNATIF MEDIA PEMBELAJARAN MATERI KLASIFIKASI TUMBUHAN." Edu Sains: Jurnal Pendidikan Sains & Matematika 5, no. 2 (March 14, 2018): 50. http://dx.doi.org/10.23971/eds.v5i2.729.
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<p>The purpose of this research is to have an inventory on Fern-plants in the area of IAIN Palangka Raya as an alternative media to discuss or learn about the classification of plants for high school students. The method applied was qualitative research through survey activities to have an inventory on fern-plants. In collecting the data, the procedure was done by tracking the ferns growing area and collecting every kind of ferns species found in IAIN Palangka Raya. Identification of ferns species were using the key of determination. The data of the research were analyzed descriptively to get connected with the development of alternative learning media. The inventory result has been obtained eleven species of pteridophyta, one species of Blechnaceae family, two species of Pteridaceae, one species of Polypodiaceae, four species of Dryopteridaceae, two species of Polipodiacea and ome species of Woodsiaceae. Based on the nature of the ferns, eleven ferns are found. They consist of six types of terrestrial Pteridophyta, two types of Pteridophyta epiphytes and teresters, and three types of Pteridophyta epiphytes. The results of the research can be used as an alternative media for teaching and learning the topic of plant classification for high school students.</p>
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KESSLER, M., A. R. SMITH, and M. LEHNERT. "FOUR NEW SPECIES OF SELAGINELLA (PTERIDOPHYTA – SELAGINELLACEAE) FROM BOLIVIA." Edinburgh Journal of Botany 63, no. 1 (March 2006): 85–93. http://dx.doi.org/10.1017/s0960428606000321.
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Four new species of Selaginella from Bolivia are described and illustrated: S. alampeta, a species from humid montane forests at 1200–1700 m that is most similar to S. flexuosa; S. arroyoana, a presumably poikilohydric species found on the walls of periodically dry stream beds and in fissures among rocks on Precambrian sandstone massifs at 750–900 m in eastern Bolivia; S. bryophila, an epiphytic species known only from the type collection made among mats of liverworts in humid montane rain forest, and S. chiquitana, from semideciduous forests at 800 m on a Precambrian sandstone massif in southeastern Bolivia.
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Kornaś, Jan. "Life-forms and seasonal patterns in the pteridophytes in Zambia." Acta Societatis Botanicorum Poloniae 46, no. 4 (2015): 669–90. http://dx.doi.org/10.5586/asbp.1977.055.
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146 species of pteridophytes occurring in Zambia were classified into Raunkiaer's life-form classes. The hemicryptophytes are dominant and include the most widely distributed species. The phanerophytes (tree-ferns and lianas) and the epiphytes are rather scarce and limited to or concentrated in the higher-rainfall areas in the northern part of the country. Simplified diagrams of periodicity were constructed for all Zambian pteridophyte species. Three major types of seasonal pattern of growth and dormancy were distinguished: the evergreen type, the poikilohydrous type, and the "summer-green" type. The first of them is connected with the local conditions of continuously wet non-zonal sites, while the two others clearly reflect the peculiarities of the zonal climate of Zambia.
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David-Higuita, Heriberto, and Esteban Alvarez-Dávila. "Riqueza total de especies de plantas vasculares en un bosque andino de la Cordillera central de Colombia." Revista de Biología Tropical 66, no. 1 (December 13, 2017): 227. http://dx.doi.org/10.15517/rbt.v66i1.27548.
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Studies of plant diversity in tropical forests are usually restricted to trees or other groups of woody plants above a certain stem diameter. However, surveys that include all forms of live plants with no restrictions on their sizes, clearly indicate that non-woody plants are equally important. In this study, we reported the total species richness of vascular plants species (TSR) in one hectare plot in an Andean forest in Northwestern Colombia (6º 12' 48” N & 75º 29' 32” W). We evaluated the relative contribution of the different growth habits and the effect of the plant size, to TSR. We measured all individuals with diameter (D) ≥ 5 cm in the hectare and all the vascular plants of all sizes, including epiphytes, in a subsample of 0.25 ha. A total of 14 545 individuals distributed in 318 species, 72 families (considering Pteridophyta as one group) and 171 genera were registered. Most of the species showed a (D) < 10 cm (99.7%) and < 2.5 cm (94.4 %). The no-arboreal species (ground herbs, epiphytes and vines) represented 54.3 % of the total species reported in the plot, indicating that they are important in the structure, composition and species richness of this montane forest. Our results coincide with similar studies in other tropical forests. We concluded that to get a more detailed knowledge of the floristic diversity of a site, it is advisable to: 1) amplify the size range of the plants generally considered in the floristic inventories and 2) to include non-woody species. This information is crucial for making better decisions in local and global conservation efforts.
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Kornás, Jan. "Adaptive strategies of African pteridophytes to extreme environments." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 86 (1985): 391–96. http://dx.doi.org/10.1017/s026972700000837x.
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SynopsisWater deficiency is the key factor limiting the occurrence of pteridophytes in seasonally dry tropical areas and shaping their adaptive strategies in respect of habitat preferences, life-forms, phenological patterns, and reproductive biology. In Zambia, which is situated in the savanna woodland zone, a total of 146 pteridophyte species occur mainly in special habitats: extrazonal evergreen forest patches and initial successional stages of lithoseres and hydroseres. Life-forms with perennating buds well protected against desiccation (hemicryptophytes and geophytes) dominate, while those with more exposed buds (epiphytes, chamaephytes and phanerophytes) are much less numerous and restricted mainly to the higher-rainfall areas. Selaginella tenerrima represents the life form of a therophyte, unknown in any other pteridophyte genus. Three major seasonal patterns of growth and dormancy may be distinguished: the evergreen type (ca. 40% of species), the poikilohydrous type (ca. 20%) and the deciduous (‘summer-green’) type (ca. 40%). No less than 20% of species are able to survive recurrent bush-fires, and some of them possess the features of advanced pyrophytes. In the driest parts of the savanna zone in Africa, e.g. in the Lake Chad Basin of northeastern Nigeria, seasonal pools are remarkably rich in water ferns, especially of the genus Marsilea which has undergone an intensive adaptive radiation in this environment.
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Hartini, Sri. "KEANEKARAGAMAN JENIS TUMBUHAN PAKU (PTERIDOPHYTA) DI KAWASAN HUTAN TUMBANG MANGGU, KECAMATAN SANAMAN MANTIKEI, KABUPATEN KATINGAN, KALIMANTAN TENGAH." EKOLOGIA 20, no. 1 (April 30, 2020): 1–13. http://dx.doi.org/10.33751/ekologia.v20i1.1978.
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Research on the diversity of ferns in the forests of Tumbang Manggu, Sub-district Sanaman Mantikei, Central Kalimantan, has been done. The study was conducted in March – April 2016 by using explorative methods. The results show, at least 28 species of ferns were found in the forest area, of which 16 species are terrestrial ferns and 12 species of epiphytic ferns. These species are included in 22 genera and 14 families. Huperzia and Pyrrosia are most abundant, each genus were consists of 3 species. The most rich families in term number of species are Polypodiaceae and Lycopodiaceae, with 6 species and 4 species respectively. Abundance of each species in the region was different, Blechnum orientale L., Dicranopteris linearis (Burm. f.) Underw., Lycopodiella cernua (L.) Pic. Serm., and Vittaria scolopendrina (Bory) Schkuhr ex Thwaites were found in large quantities and spread almost all over the region. Asplenium nidus L., Drynaria quercifolia (L.) J. Sm., Stenochlaena palustris (Burm. f.) Bedd., Lygodium circinatum (Burm. f.) Sw., Pyrrosia lanceolata (L.) Farw., Nephrolepis falcata (Cav.) C. Chr. and Vittaria ensiformis Sw. were found in considerable numbers. Asplenium pellucidum Lam., Athyrium bantamense Milde, Helminthostachys zeylanica (L.) Hook. and Tectaria crenata Cav. were found in small quantities and only in certain places. Local communities around the region have not much utilizing the ferns yet.
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Sharma, Sachin, Bhupendra S. Kholia, Ramesh Kumar, and Amit Kumar. "Pteridophytic diversity in human-inhabited buffer zone of Murlen National Park, Mizoram, India." Check List 13, no. 2 (April 3, 2017): 2081. http://dx.doi.org/10.15560/13.2.2081.
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A taxonomic inventorization of pteridophytes occurring in a human inhabited buffer zone of Murlen National Park, India, was conducted in 2012 and 2013. This survey revealed 35 species belonging to 27 genera and 15 families. Polypodiaceae was recorded as dominant family, represented by six genera and eight species, followed by Pteridaceae (three genera and six species) and Lycopodiaceae (three genera and four species). Of the recorded species, 23 species were terrestrial, 11 (epiphytic) and two (lithophytic) in their habit forms. The species richness was highest in Tualpui village, with 11 species, followed by Rabung (7) and Ngur (6). The site preference of species among the villages is discussed. These data will provide baseline for future research and monitoring of pteridophytic vegetation in this protected area, as well as in similar habitats in the adjacent areas.
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Acuña-Tarazona, Margoth, Tarin Toledo-Aceves, Alejandro Flores-Palacios, Vinicio J. Sosa, and M. Luisa Martínez. "Post-stripping recolonization of vascular epiphytes in cloud-forest fragments in Mexico." Journal of Tropical Ecology 31, no. 6 (August 12, 2015): 499–508. http://dx.doi.org/10.1017/s0266467415000395.
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Abstract:The response of vascular epiphyte communities following natural or human disturbance has been little studied. Over 5 y, we evaluated the post-stripping recolonization of vascular epiphytes in cloud forest. Vascular epiphytes were experimentally removed from branch and trunk plots (1 m in length) on five trees in two secondary cloud forest fragments in southern Mexico. Similarity between colonizer and established communities was compared in each fragment using a further five trees with no stripping. All seedlings were recorded yearly. Non-vascular epiphyte cover was estimated in each plot. The recolonization rate was very high; after 5 y, epiphyte density of the colonizer community (27.4 ± 6.8 individuals per segment) reached similar values to those of the established community (26.7 ± 3.3) in nearby trees. While similarity (composition and abundance) between the colonizer community and established community was high (81%), diversity accumulation curves indicated that the colonizer community presents a lower diversity of epiphytes (5.5 equivalent species) than the established community (11.4). Colonization of xerophytic bromeliads was high, while pteridophytes and orchids presented reduced recovery. The immediately surrounding source of propagules had a strong influence on recolonization. In both the colonizer and established communities, dominance rank was bromeliads > peperomias > pteridophytes. The results show that the recovery capacity of epiphytic vegetation in secondary forest is high, if propagule sources are close by. However, at 5 y after disturbance, it is unclear whether the colonizer community would present the same species composition as the established community or if it would give rise to a different community.
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Smith, Alan R., E. A. C. L. E. Schelpe, and N. C. Anthony. "Pteridophyta." Taxon 36, no. 4 (November 1987): 783. http://dx.doi.org/10.2307/1221150.
Full textDissertations / Theses on the topic "Pteridophyta Pteridophyta Epiphytes. Pteridophyta"
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Schuettpelz, Eric. "Evolution and diversification of epiphytic ferns." Diss., View online, 2007. http://hdl.handle.net/10161/181.
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Viana, Ivan Becari. "Estudo morfoanatômico do rizoma em Dennstaedtiaceae (Pteridophyta)." Universidade Federal de Viçosa, 2015. http://www.locus.ufv.br/handle/123456789/8433.
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Dennstaedtiaceae é uma família monofilética de samambaias leptosporangiadas, constituída por cerca de 10-12 gêneros e aproximadamente 200 espécies de distribuição sub-cosmopolita. Os fósseis mais antigos da família datam de 75 milhões de anos e a idade molecular estimada é de 115 milhões de anos. O conhecimento sobre a morfoanatomia do rizoma em Dennstaedtiaceae pode fornecer dados úteis à taxonomia e sistemática, prover dados para comparações com fósseis e verificar a distribuição de protuberâncias intercelulares relatadas apenas para o rizoma do gênero Pteridium. Objetivou-se neste trabalho explorar a variação dos caractereres morfonatômicos dentre alguns gêneros, grupos de espécies e espécies de Dennstaedtiaceae provendo informações para novas interpretações de taxonomia e evolução da família, paleontologia, além de investigar a ocorrência, estrutura e composição histoquímica de protuberâncias intercelulares. Amostras de rizomas de 23 espécies provenientes de campo e herbários foram analisadas morfologicamente e submetidas às técnicas de microscopia de luz para caracterização anatômica/histoquímica e microscopia eletrônica de varredura para análise micromorfológica para investigação dos espaços intercelulares. Os caracteres morfoanatômicos nos rizomas de Dennstaedtiaceae relevantes são: crescimento do caule (reptante ou ascendente), simetria (dorsiventral ou radial), indumentos (tricomas catenados e escamas comosas), zonas de parênquima esclerificado e não esclerificado no córtex e medula, presença ou ausência de aeróforo, tipos de estelo (solenostelo, dictiostelo, soleno-policiclostelo, dictio- policiclostelo) e células constituintes dos elementos traqueais (traqueídes ou elementos de vaso). Esse estudo evidencia a parafilia em Dennstaedtia e Microlepia e sugere a divisão de gêneros em grupos de espécies. Foram evidenciadas também tendências evolutivas na família que culminaram em diferenças morfológicas e adaptativas. Quanto às protuberâncias intercelulares (PI), dois tipos foram visualizados. PI do tipo “strands” entre espécies dos gêneros Blotiella, Dennstaedtia, Microlepia, Pteridium e PI do tipo filamento entre espécies dos gêneros Histiopteris, Hypolepis, Oenotrichia e Paesia. As PI em geral possuem formato irregular, muitas vezes com nodulações, ápices esféricos ou afilados. Quanto à composição química, ficou evidenciada a natureza polissacarídica e constituição péctica das mesmas. As PI em Dennstaedtiaceae parecem ter função estrutural e sua origem a partir da lamela média. Nos aeróforos a ocorrência de PI do tipo filamento pode estar relacionada ao maior espaçamento intercelular nessa região do córtex. A composição fenólica evidenciada para o aeróforo, principalmente em Pteridium arachnoideum subsp. arachnoideum pode ser um indicativo da função antimicrobiana exercida pelas células e PI nessa região. A utilização de estudos ultraestruturais, ontogenéticos e imunocitoquímicos são essenciais para elucidar o processo de desenvolvimento e fornecer maiores interpretações sobre a função dessas estruturas em Dennstaedtiaceae. Mesmo sendo um órgão com características anatômicas conservadas, os caracteres morfoanatômicos do rizoma levantados neste trabalho, apresentam importância taxonômica entre as espécies e gêneros de Dennstaedtiaceae. Os dados anatômicos aqui apresentados podem ser úteis para a área da paleontologia ao auxiliar na identificação de exemplares encontrados no registro fóssil.
Dennstaedtiaceae is a monophyletic family of leptosporangiate ferns, with ca. 10–12 genera and ca. 200 species, and subcosmopolitan distribution. The oldest fossil records of the family date back to 75 myr, while its estimated molecular age is 115 million years. Morphoanatomical studies on the rhizome of its representatives may provide useful data for the taxonomy and systematics of the family as well as for comparisons with fossil records. Such studies might also allow verifying the occurrence of intercellular protuberances (IP), which so far have only been reported to Pteridium. The aims of this work were to explore the variation in morphoanatomical characters among some genera, groups of species, and species in the Dennstaedtiaceae, thus providing information for novel taxonomic, paleontological and evolutionary interpretations in the family; and to investigate the occurrence, structure and histochemical composition of IPs. Rhizome samples of 23 species from field and herbarium collections were morphologically analyzed and subjected to light microscopy techniques for anatomical and histochemical characterization, and to scanning electron microscopy techniques for micromorphological analysis of intercellular spaces. The major morphoanatomical characters in the Dennstaedtiaceae rhizome are: growth habit (creeping or ascending), symmetry (dorsiventral or radial), indument (catenate hairs and comose scales), zones of sclerified and non-sclerified parenchymas in the cortex and pith, presence or absence of aerophores, type of tracheary elements (tracheids or vessel elements), and stele type (solenostele, dictyostele, polycyclic solenostele or polycyclic dictyostele). This study points out the paraphyly of Dennstaedtia and Microlepia, and suggests the division of some genera into groups of species. Some evolutionary trends in the family, which culminated in morphological and adaptive differentiations, are also reported. Two IP types were found: strands, in Blotiella, Dennstaedtia, Microlepia and Pteridium, and filaments, in Histiopteris, Hypolepis, Oenotrichia and Paesia. Overall, the IPs are irregularly-shaped, often nodulated and with angustate or spheroidal apices. Regarding their histochemical composition, their polysaccharide and pectic nature was demonstrated. The IPs in the Dennstaedtiaceae seem to have a structural function and a probable origin in the middle lamella. The occurrence of filament-type IPs in the aerophores may be related to the larger intercellular spaces in these cortex regions. The phenolic composition of aerophores, as shown particularly in Pteridium arachnoideum subsp. arachnoideum, may be the indicative of an antimicrobial activity exerted by cells and IPs of these regions. Future ultrastructural, ontogenetic and immunocytochemical studies would elucidate the development and composition of the IPs as well as provide more solid interpretations on their function in the Dennstaedtiaceae. Despite being an organ with conserved anatomical features, the rhizome showed several characters with taxonomic value to species and genera of the Dennstaedtiaceae. The anatomical data provided herein may be helpful for paleontologists, as they may aid in the identification of fossil specimens.
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Vogel, Johannes Christian. "Multiple origins of polyploids in European Asplenium (Pteridophyta)." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388534.
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Schwartsburd, Pedro Bond. "O gênero Hypolepis Bernh. (Dennstaedtiaceae) na América do Sul." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/41/41132/tde-17072012-102608/.
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Hypolepis Bernh. é um gênero sub-cosmopolita com ca. 80 táxons, e com pouquíssimos estudos taxonômicos. O presente trabalho trata da revisão taxonômica das espécies ocorrentes na América do Sul, incluindo a Ilha de Cocos (Costa Rica). O mesmo se desenvolveu, principalmente, através do estudo morfológico dos tipos nomenclaturais e de exsicatas oriundas de herbários europeus, sul-americanos e de um neo-zeolandês. Algumas espécies também foram estudadas em campo. Para a América do Sul (incl. Cocos) são aqui reconhecidas 27 espécies, e um total de 31 táxons (espécies, subespécies e variedades). Destas, 11 representam novidades nomenclaturais: H. acantha Schwartsb., H. bogotensis var. glabra H. Karst. ex Schwartsb. & J. Prado, H. flexuosa var. zimmerae Schwartsb. & J. Prado, H. galapagensis Schwartsb. & J. Prado, H. Krameri Schwartsb. et al., H. Paulistana Schwartsb. & J. Prado, H. Pedropaloensis Schwartsb. & J. Prado, H. Rugosula subsp. poeppigiana (Mett.) Schwartsb. & J. Prado, H. Rugosula subsp. pradoana Schwartsb., H. Stolonifera var. nebularis Schwartsb., e H. Trinationalis Schwartsb. Grande parte dos táxons foram re-circunscritos, especialmente H. Flexuosa Sodiro var. flexuosa, H. Mitis Kunze ex Kuhn, H. Poeppigii (Kunze) R.A. Rodr., H. Repens (L.) C. Presl, H. Rigescens (Kunze ex Mart.) T. Moore, e H. Stolonifera Fée var. stolonifera. Foram reconhecidos oito padrões biogeográficos para os táxons: \"neotropical\", \"circum-caribenho\", \"circum-amazônico\", \"Monte Roraima\", \"andino\", \"ilhas\", \"sul-brasileiro\", e \"austral\". Altitudes mínimas e máximas parecem ser fortes fatores limitantes de distribuição. O tratamento taxonômico apresenta chaves de identificação, sinonímias, tipificações, descrição dos táxons, mapas de distribuição, ilustrações, material examinado, e comentários taxonômicos e/ou nomenclaturais. Em adição, são apresentadas breves discussões morfológicas, ecológicas, biogeográficas, de conceitos específicos e infra-específicos de alguns táxons, e de grupos informais de espécies; além de pranchas com secções anatômicas de quatro espécies.Hypolepis Bernh. is a sub-cosmopolitan genus with ca. 80 taxa, and with few taxonomic studies. The present work deals with the taxonomic revision of the South American species, including the Cocos Island (Costa Rica). It has been based, mainly, on the morphological study of nomenclatural types and exsiccates from European, South American, and New Zealand herbaria. Some species were also studied in nature. For South America (incl. Cocos Island), 27 species are here recognized, and a total of 31 taxa (species, subspecies, and varieties). Among these, 11 represent nomenclatural novelties: H. acanthi Schwartsb., H. bogotensis var. glabra H. Karst. ex Schwartsb. & J. Prado, H. flexuosa var. zimmerae Schwartsb. & J. Prado, H. galapagensis Schwartsb. & J. Prado, H. Krameri Schwartsb. et al., H. Paulistana Schwartsb. & J. Prado, H. Pedropaloensis Schwartsb. & J. Prado, H. Rugosula subsp. poeppigiana (Mett.) Schwartsb. & J. Prado, H. Rugosula subsp. pradoana Schwartsb., H. Stolonifera var. nebularis Schwartsb., and H. Trinationalis Schwartsb. Most taxa were re-circunscribed, especially H. Flexuosa Sodiro var. flexuosa, H. Mitis Kunze ex Kuhn, H. Poeppigii (Kunze) R.A. Rodr., H. Repens (L.) C. Presl, H. Rigescens (Kunze ex Mart.) T. Moore, and H. Stolonifera Fée var. stolonifera. Eight bio-geographical patterns were recognized: \"Neotropical\", \"circum-Caribbean\", \"circum-Amazonian\", \"Mount Roraima\", \"Andean\", \"islanders\", \"southern Brazilian\", and \"Austral\". Minimum and maximum elevations seem to be strong limiting factors of distribution. The taxonomic treatment presents keys to taxa, synonymies, typifications, taxa description, distribution maps, illustrations, studied material, and taxonomic and/or nomenclatural comments. In addition, it is presented short discussions about morphology, ecology, bio-geography, specific/infra-specific concepts of some taxa, and informal groups of species; also, plates with anatomical sections of four species.
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Machado, Leticia dos Santos. "Filicíneas e licófitas epífitas na planície costeira do Rio Grande do Sul, Brasil:florística,estrutura comunitária e distribuíção espacial." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/131684.
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Gonzales, Rocabado Maria Jasivia. "A taxonomic revision of the genus Sticherus (Gleicheniaceae - Pteridophyta) in the neotropics." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969662424.
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QUEIROZ, Leydianne Leite de Siqueira Patriota. "Isolamento, caracterização e avaliação de atividades citotóxica e imunomoduladora de lectina de fronde de Microgramma vacciniifolia." Universidade Federal de Pernambuco, 2017. https://repositorio.ufpe.br/handle/123456789/27505.
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Microgramma vacciniifolia (Polypodiaceae, Pteridophyta) é uma planta epífita que possui propriedades medicinais, por exemplo, no tratamento de infecções respiratórias. Lectinas de origem vegetal são capazes de exercer ação imunomoduladora sobre células do sistema imune de mamíferos, através da interação com receptores de superfície celular. Esta dissertação descreve a purificação e caracterização de uma lectina a partir das frondes de M. vacciniifolia (MvFL), assim como a avaliação da sua toxicidade e efeito imunomodulador sobre células mononucleares de sangue periférico (PBMCs) humano. Extrato proteico foi obtido por homogeneização do pó das frondes secas em NaCl 0,15 M (10%, p/v) por 16 h a 25ºC. MvFL foi isolada a partir do extrato através de cromatografia de gel filtração em coluna de Sephadex G-75 seguida de cromatografia de troca iônica utilizando a matriz DEAE-Sephadex A25. A homogeneidade de MvFL foi avaliada por eletroforese em gel de poliacrilamida (PAGE) em condições nativas para proteínas básicas ou ácidas. MvFL foi caracterizada quanto a especificidade de ligação a carboidratos, massa molecular nativa, ponto isoelétrico (pI), composição em subunidades, presença de glicosilação e similaridades na sua estrutura primária com outras proteínas vegetais. A estabilidade da lectina em diferentes valores de pH (3,0–9,0) e após aquecimento a diferentes temperaturas (30–100°C) foi avaliada por ensaio de hemaglutinação e espectrometria de fluorescência. Adicionalmente, MvFL foi avaliada quanto à atividade inibitória de tripsina. Citotoxicidade foi investigada através da avaliação da indução de apoptose/necrose em PBMCs tratados com MvFL (6,25–50μg/mL). A atividade imunomoduladora de MvFL (12,5 μg/mL) sobre PBMCs foi avaliada através da determinação dos níveis de citocinas, quimiocinas e óxido nítrico (NO). Diferenciação e ativação de células T também foram investigadas. MvFL foi isolada com elevada atividade hemaglutinante específica (10.240) e elevado fator de purificação (3.413). Ela foi revelada como uma glicoproteína de pI 4,51 e massa molecular nativa de 54 kDa, sendo composta por 3 subunidades distintas. Espectrometria de massas de peptídeos derivados da hidrólise de MvFL por tripsina revelou similaridades (cobertura de sequência de 32%) com a estrutura primária de uma proteína vegetal ligadora de RNA de Theobroma cacao. A atividade hemaglutinante da lectina foi inibida apenas por glicoproteínas (fetuína e ovoalbumina). O aquecimento de MvFL não afetou a atividade hemaglutinante nem promoveu desenovelamento da lectina. Tanto a atividade hemaglutinante quanto a conformação da lectina variaram dependendo do pH do meio, sendo MvFL menos ativa em pH alcalino. A lectina apresentou atividade inibidora de tripsina (3360,1 U/mg) e não apresentou toxicidade para PBMCs nas concentrações de 6,25 a 25 μg/mL. A lectina promoveu um aumento na produção de TNF-α, IFN-γ, IL-6, IL-10 e NO, bem como estimulou a diferenciação e ativação de linfócitos T CD8+. MvFL não alterou a produção das quimiocinas testadas. Em conclusão, as frondes de M. vacciniifolia contêm uma proteína termoestável e multifuncional, com atividades lectínicas e inibidora de tripsina, baixa toxicidade para linfócitos, ação imunomoduladora sobre PBMCs, induzindo predominantemente uma resposta Th1, e capaz de promover ativação e diferenciação de linfócitos humanos.
Microgramma vacciniifolia (Polypodiaceae, Pteridophyta) is an epiphytic plant that has medicinal properties, for example, in the treatment of respiratory infections. Lectins of plant origin are able to exert immunomodulatory action on cells from mammalian immune system by interacting with cell surface receptors. This work describes the purification and characterization of a lectin from the M. vacciniifolia fronds (MvFL), as well as the evaluation of its toxicity and immunomodulatory effect on human peripheral blood mononuclear cells (PBMCs). Protein extract was obtained by homogenizing the powder of dried fronds in 0.15 M NaCl (10%, w/v) for 16 h at 25°C. MvFL was isolated from the extract by gel filtration chromatography on Sephadex G-75 column followed by ion exchange chromatography using the DEAE-Sephadex A25 matrix. The homogeneity of MvFL was evaluated by polyacrylamide gel electrophoresis (PAGE) under native conditions for basic or acidic proteins. MvFL was characterized in terms of carbohydrate specificity, native molecular mass, isoelectric point (pI), subunit composition, presence of glycosylation and similarities in its primary structure with plant proteins. The stability of the lectin at different pH values (3.0-9.0) and after heating at different temperatures (30-100°C) was evaluated by hemagglutination assay and fluorescence spectrometry. Additionally, MvFL was evaluated for trypsin inhibitory activity. Cytotoxicity was investigated by evaluating the induction of apoptosis/necrosis in PBMCs treated with MvFL (6.25–50 μg/mL). Immunomodulatory activity of MvFL (12.5 μg/mL) on PBMCs was assessed by determining the levels of cytokines, chemokines and nitric oxide (NO). Differentiation and activation of T cells were also investigated. MvFL was isolated with high specific hemagglutinating activity (10,240) and purification factor (3,413). It was revealed as a glycoprotein with pI 4.51 and native molecular weight of 54 kDa, being composed of three distinct subunits. Mass spectrometry of peptides derived from the hydrolysis of MvFL by trypsin revealed similarities (32% sequence coverage) with the primary structure of a RNA-binding protein from Theobroma cacao. The hemagglutinating activity of MvFL was inhibited only by glycoproteins (fetuin and ovalbumin). Heating of MvFL did not affect hemagglutinating activity or promote lectin unfolding. Both the hemagglutinating activity and the conformation of the lectin varied depending on the pH of the medium, with MvFL being less active at alkaline pH. The lectin showed trypsin inhibitory activity (3,360.1 U/mg) and no toxicity to PBMCs at concentrations of 6.25 to 25 μg/mL. The lectin promoted an increase in the production of TNF-α, IFN-γ, IL-6, IL-10 and NO, as well as stimulated the differentiation and activation of T CD8+ lymphocytes. MvFL did not alter the production of the chemokines tested. In conclusion, the fronds of M. vacciniifolia contain a thermostable and multifunctional protein with lectin and trypsin inhibitor activities, low toxicity to lymphocytes, immunomodulatory action on PBMCs, inducing predominantly a Th1 response, as well as able to promote differentiation and activation of human lymphocytes.
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Capretz, Robson Louiz [UNESP]. "Paleoecologia e tafonomia da floresta petrificada do Tocantins setentrional (Bacia do Parnaíba, Permiano)." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/103007.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
No presente estudo é descrita uma floresta do Eopermiano do Norte do Gondwana, dominada por pteridófitas arborescentes, gimnospermas, licófitas e esfenófitas. Esta rica assembléia fossilífera localiza-se no Monumento Natural das Árvores Fossilizadas do Tocantins (MNAFTO), na Bacia do Parnaíba, Norte do Brasil. Dois aspectos se destacam: a abundância dos fitofósseis e seu excepcional nível de preservação. Os vegetais fósseis guardam semelhanças com aqueles do mesmo período em Chemnitz (Alemanha), na Província Euroamericana, e com a Flora Gondvânica, na Bacia do Paraná (Brasil), entre outros. A análise dos padrões de orientação de 178 caules, junto com observações geológicas, sugere paleocorrentes no sentido Oeste-Leste predominantemente, originadas durante tempestades de monções, com área-fonte muito distante a Oeste, talvez em um contexto de leque aluvial distal. A vegetação das margens dos principais canais fluviais e suas planícies de inundação era dominada por pteridófitas arborescentes no estrato superior da floresta (dossel), com licófitas, esfenófitas e outras pteridófitas menores ocupando o estrato inferior (sub-bosque). Gimnospermas ocupavam regiões mais distantes das margens dos canais. A comparação entre pteridófitas arborescentes permianas (do MNAFTO) com pteridófitas arborescentes atuais (em remanescentes de Floresta Ombrófila Densa Submontana) permitiu discutir nichos ecológicos ocupados por estas plantas, a estrutura da floresta em ambos os casos, e a inferência da altura verdadeira dos fitofósseis, em uma aplicação inédita de técnicas alométricas a estudos paleontológicos
This present study describes a Lower Permian forest in Northern Gondwana, composed by tree ferns, gymnosperms, lycophytes and sphenopsids. This fossil assemblage is located at Tocantins Fossil Trees Natural Monument (MNAFTO) at Parnaíba Basin, Northern Brazil. There are two remarkable aspects: the abundance of fossils and their exceptional level or preservation. The vegetation is similar to the plant fossils found at Chemnitz (Germany), to Euroamerican Flora sites, and to Gondwanian Flora at Paraná Basin (Brazil), among others. Orientation pattern analyses of 178 stems with geological observations suggest paleocurrents in West-East direction, in monsoon storms. The source area should be at West, several quilometers away, probably in a distal alluvial fan context. The forest in the margins of main fluvial channels was occupied by tree ferns at canopy, and lycophytes, sphenopsids and other small ferns at understory. Gymnosperms probably lived in more distant areas from the fluvial channels. The comparison between fossil tree ferns (from MNAFTO) and modern tree ferns (in Submontane Tropical Rain Forest remnants at the present) allowed discussions about ecological niche, forest structure and estimations of real height of fossil tree ferns, in a new way to apply allometric techniques to paleontological studies
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Schmitt, Jairo Lizandro. "Estudos florísticos, ecológicos e do desenvolvimento em Cyatheaceae(Pteridophyta) no Rio Grande do Sul, Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/6422.
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Capretz, Robson Louiz. "Paleoecologia e tafonomia da floresta petrificada do Tocantins setentrional (Bacia do Parnaíba, Permiano) /." Rio Claro : [s.n.], 2010. http://hdl.handle.net/11449/103007.
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Orientador: Rosemarie Rohn DaviesBanca: Fresia Soledad Ricardi Torres Branco
Banca: Roberto Ianuzzi
Banca: Joel Carneiro de Castro
Banca: Luis Gustavo Ferreira de Oliveira
Resumo: No presente estudo é descrita uma floresta do Eopermiano do Norte do Gondwana, dominada por pteridófitas arborescentes, gimnospermas, licófitas e esfenófitas. Esta rica assembléia fossilífera localiza-se no Monumento Natural das Árvores Fossilizadas do Tocantins (MNAFTO), na Bacia do Parnaíba, Norte do Brasil. Dois aspectos se destacam: a abundância dos fitofósseis e seu excepcional nível de preservação. Os vegetais fósseis guardam semelhanças com aqueles do mesmo período em Chemnitz (Alemanha), na Província Euroamericana, e com a Flora Gondvânica, na Bacia do Paraná (Brasil), entre outros. A análise dos padrões de orientação de 178 caules, junto com observações geológicas, sugere paleocorrentes no sentido Oeste-Leste predominantemente, originadas durante tempestades de monções, com área-fonte muito distante a Oeste, talvez em um contexto de leque aluvial distal. A vegetação das margens dos principais canais fluviais e suas planícies de inundação era dominada por pteridófitas arborescentes no estrato superior da floresta (dossel), com licófitas, esfenófitas e outras pteridófitas menores ocupando o estrato inferior (sub-bosque). Gimnospermas ocupavam regiões mais distantes das margens dos canais. A comparação entre pteridófitas arborescentes permianas (do MNAFTO) com pteridófitas arborescentes atuais (em remanescentes de Floresta Ombrófila Densa Submontana) permitiu discutir nichos ecológicos ocupados por estas plantas, a estrutura da floresta em ambos os casos, e a inferência da altura verdadeira dos fitofósseis, em uma aplicação inédita de técnicas alométricas a estudos paleontológicos
Abstract: This present study describes a Lower Permian forest in Northern Gondwana, composed by tree ferns, gymnosperms, lycophytes and sphenopsids. This fossil assemblage is located at Tocantins Fossil Trees Natural Monument (MNAFTO) at Parnaíba Basin, Northern Brazil. There are two remarkable aspects: the abundance of fossils and their exceptional level or preservation. The vegetation is similar to the plant fossils found at Chemnitz (Germany), to Euroamerican Flora sites, and to Gondwanian Flora at Paraná Basin (Brazil), among others. Orientation pattern analyses of 178 stems with geological observations suggest paleocurrents in West-East direction, in monsoon storms. The source area should be at West, several quilometers away, probably in a distal alluvial fan context. The forest in the margins of main fluvial channels was occupied by tree ferns at canopy, and lycophytes, sphenopsids and other small ferns at understory. Gymnosperms probably lived in more distant areas from the fluvial channels. The comparison between fossil tree ferns (from MNAFTO) and modern tree ferns (in Submontane Tropical Rain Forest remnants at the present) allowed discussions about ecological niche, forest structure and estimations of real height of fossil tree ferns, in a new way to apply allometric techniques to paleontological studies
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Books on the topic "Pteridophyta Pteridophyta Epiphytes. Pteridophyta"
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Edmund A. C. L. E. Schelpe. Pteridophyta. Edited by Anthony Nicola C and Leistner O. A. [Pretoria]: Botanical Research Institute, Dept. of Agriculture and Water Supply, 1986.
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Tryon, Rolla Milton. Pteridophyta of Peru. Chicago, Ill: Field Museum of Natural History, 1993.
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Tryon, Alice F., and Bernard Lugardon. Spores of the Pteridophyta. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4613-8991-0.
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Derrick, L. N. Checklist of European pteridophytes. [Oslo, Norway: Botanical Garden and Museum, University of Oslo], 1987.
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V, Irudayaraj, ed. Pteridophyte flora of the Western Ghats, South India. New Delhi: B.I. Publications, 1992.
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Chen, Jinfen. Tai dong jue lei. Taidong Shi: Xing zheng yuan nong ye wei yuan hui Tai dong qu nong ye gai liang chang, 2004.
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Conspectus of southern African Pteridophyta: An enumeration of the Pteridophyta of Angola, Botswana, Lesotho, Malawi, Mozambique, Namibia, South Africa (including the Marion Island group), Swaziland, Zambia, and Zimbabwe. Pretoria, South Africa: Project Coordinator, Southern African Botanical Diversity Network, c/o National Botanical Institute, 2001.
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Kornaś, Jan. Pteridophytes of Upper Katanga (Democratic Republic of Congo): Paprotniki Górnej Katangi (Republika Demokratyczna Konga). Kraków: Nakł. Instytutu Botaniki Uniwersytetu Jagiellońskiego, 2000.
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P, María Teresa Murillo. Helechos y plantas afines de Colombia. Bogota: Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 1990.
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Dixit, R. D. Pteridophytes of Uttaranchal: A check-list. Dehra Dun: Bishen Singh Mahendra Pal Singh, 2002.
Find full textBook chapters on the topic "Pteridophyta Pteridophyta Epiphytes. Pteridophyta"
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Hanelt, Peter. "Pteridophyta." In Mansfeld’s Encyclopedia of Agricultural and Horticultural Crops, 50–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-540-30442-5_7.
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Dahlgren, Gertrud, and Meinrad Küttel. "Abteilung Pteridophyta (Farnpflanzen)." In Systematische Botanik, 88–102. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71611-9_18.
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Esser, Karl. "Abteilung: Pteridophyta (Farnpflanzen)." In Kryptogamen II Moose · Farne, 111–206. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-76408-0_4.
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Habermehl, Gerhard, and Petra Ziemer. "Abteilung Pteridophyta, Farnpflanzen." In Mitteleuropäische Giftpflanzen und ihre Wirkstoffe, 5–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-59961-3_2.
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Tryon, Alice F., and Bernard Lugardon. "Introduction." In Spores of the Pteridophyta, 1–26. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4613-8991-0_1.
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Tryon, Alice F., and Bernard Lugardon. "Schizaeaceae Kaulfuss." In Spores of the Pteridophyta, 103–21. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4613-8991-0_10.
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Tryon, Alice F., and Bernard Lugardon. "Pteridaceae Reichenbach." In Spores of the Pteridophyta, 122–98. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4613-8991-0_11.
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Tryon, Alice F., and Bernard Lugardon. "Vittariaceae (Presl) Ching." In Spores of the Pteridophyta, 199–209. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4613-8991-0_12.
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Tryon, Alice F., and Bernard Lugardon. "Loxomataceae Presl." In Spores of the Pteridophyta, 210–13. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4613-8991-0_13.
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Tryon, Alice F., and Bernard Lugardon. "Plagiogyriaceae Bower." In Spores of the Pteridophyta, 214–17. New York, NY: Springer New York, 1991. http://dx.doi.org/10.1007/978-1-4613-8991-0_14.
Full textConference papers on the topic "Pteridophyta Pteridophyta Epiphytes. Pteridophyta"
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Risky, Febrian Jeka, Matius Paulus, Sutedjo, and Rita Diana. "Diversity of Fern Species (Pteridophyta) in the Karst Sangkulirang – Mangkalihat." In Joint Symposium on Tropical Studies (JSTS-19). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/absr.k.210408.024.
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Salamah, Zuchrotus, Hadi Sasongko, and Risdianti Novida. "The Diversity of Ferns (Pteridophyta) at Pundong Japanese Cave, Bantul, Yogyakarta." In International Conference on Biology, Sciences and Education (ICoBioSE 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/absr.k.200807.038.
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Bruna Paula Silva and Marcelo Galeazzi Caxambu. "Levantamento de Pteridophyta na Reserva Biológica das Perobas em Tuneiras do Oeste e Cianorte, PR, Brasil." In XX Seminário de Iniciação Científica e Tecnológica da UTFPR. Curitiba, PR, Brasil: Universidade Tecnológica Federal do Paraná - UTFPR, 2015. http://dx.doi.org/10.20906/cps/sicite2015-0405.
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Carvalho, Braulio Fernandes de, and Glauco Souza Gomes. "RELATO DE CASO: POTENCIAL ECONÔMICO SUSTENTÁVEL EM PROPRIEDADE PRIVADA EM ALTOS-PI, BRASIL." In I Congresso Nacional de Ciências Agrárias On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/1598.
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Introdução: Reserva Particular do Patrimônio Natural (RPPN) é uma unidade de conservação (UC) oficial de proteção integral no Estado do Piauí, a única com caráter privado (Lei Ordinária Nº 5.977 de 24/02/2010). Tem o intuito de conservar a biodiversidade e recursos naturais, além de oferecer vantagens econômicas como isenção de imposto territorial rural, além de oportunidades com ecoturismo e pagamento por serviços ambientais (Lei Nº 14.119, 13/01/2021). Objetivos: Avaliou-se os potenciais econômicos e naturais de uma propriedade particular subutilizada de 56 hectares em Altos-PI. Material e Métodos: As visitas foram feitas ao fim da estação chuvosa, em maio de 2021, no local -5.160495, -42.560679, seguindo-se o formulário estabelecido pelo ICMBio no seu roteiro de criação de RPPNs. A identificação da flora foi feita através de consultas a guias de campo e speciesLink. Resultados: Ameaças identificadas: veredas abertas por caçadores e gado, compactação do solo, circulação de terceiros, corte ilegal de madeira, erosão, cercamento e georreferenciamento incompletos. Fitofisionomias identificadas: cerradão, carrasco, brejo, cerrado rupestre e babaçual. A altitude variou de 109m a 168m. Potencial econômico: ecoturismo, balneário, pesquisa científica e pagamentos por serviços ambientais. Exemplares botânicos encontrados: Acrocomia aculeata (Macaúba), Agonandra brasiliensis sp. (Pau-marfim), 1 Anacardiaceae, Anadenanthera colubrina (Angico Branco), Astronium fraxinifolium (Gonçalo Alves), Bactris setosa (Tucun), Bromelia sp. (Croatá), Cecropia sp. (Embaúba), Cedrela sp. (Cedro), Cenostigma Macrophyllum (Caneleiro), Combretum sp. (Mufumbo), Copaifera langsdorffii (Copaíba), Copernicia prunifera (Carnaúba), Dimorphandra mollis (Fava D’anta), Genipa americana (Jenipapo), 2 Hymenaea sp. (Jatobá), Jacaranda sp. (Banha-de-galinha), Lecythis pisonis sp. (Sapucaia), 1 Melastomataceae, Orbignya speciosa (Babaçu), Parkia platycephala (Faveira), Pleroma sp. (Quaresmeira do cerrado), Spondias mombin (Cajazeira), Sterculia striata (Chichá), Tabebuia chrysotricha (Ipê amarelo), 3 Pteridophyta, 1 Philodendron, e 2 Bryophyta (sensu lato). Conclusão: O terreno apresenta diferentes fitofisionomias de cerrado, influenciadas pelas condições de solo, umidade e altitude, o que proporciona uma variedade botânica e de ambientes ideal para conservação de biodiversidade, pesquisa e ecoturismo. Recomenda-se finalizar o georreferenciamento e cercamento da área, adotar medidas para diminuir a velocidade de escoamento da água pluvial, manejar os babaçus, e dar prosseguimento na criação da RPPN em órgão responsável.