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Статті в журналах з теми "Arid flora"
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Beudel, Saskia, and Margo Daly. "Gallant Desert Flora: Olive Pink’s Australian Arid Regions Flora Reserve." Historical Records of Australian Science 25, no. 2 (2014): 227. http://dx.doi.org/10.1071/hr14016.
Повний текст джерелаАнотація:
In the mid-1950s Olive Pink campaigned to have an area of land in Alice Springs set aside as a flora reserve. In 1956 the area was gazetted as the Australian Arid Regions Flora Reserve, with Pink appointed as honorary curator. Although Pink was not a professional horticulturalist or botanist, she established a garden that marked itself out from contemporary gardens, such as Maranoa Gardens and the Australian National Botanic Gardens, which were similarly committed to showcasing indigenous Australian plants. Pink's approach was pioneering in that she aimed to create a collection of plants selected by a delineated ‘climatic zone' and geographic area rather than drawn from all parts of the continent. This article argues that Pink developed a distinctive form of horticultural work informed by her passion for and close artistic observation of desert flora; her long experience establishing and maintaining gardens under central Australian ecological conditions; along with her anthropological insight into Indigenous knowledge of flora gained through her studies with Arrernte and Warlpiri people. Today we might recognize the principles that informed Pink's garden through the concepts of ‘water-wise gardens' and environmental sustainability practices.
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Mendoza-Fernández, Antonio, Francisco J. Pérez-García, Fabián Martínez-Hernández, José M. Medina-Cazorla, Juan A. Garrido-Becerra, María E. Merlo Calvente, José S. Guirado Romero, and Juan F. Mota. "Threatened plants of arid ecosystems in the Mediterranean Basin: a case study of the south-eastern Iberian Peninsula." Oryx 48, no. 4 (April 29, 2014): 548–54. http://dx.doi.org/10.1017/s0030605313000495.
Повний текст джерелаАнотація:
AbstractNetworks of protected areas are one of the main strategies used to address the biodiversity crisis. These should encompass as many species and ecosystems as possible, particularly in territories with high biological diversity, such as the Spanish arid zones. We produce a priority ranking of the arid zones of south-east Spain according to the rarity and richness of their characteristic flora and the level of endangerment. The resulting hierarchy shows that optimal zones for the preservation of the flora are located outside the network of protected areas. In particular, it is important to extend the network and encourage the creation of microreserves in the depression of the River Guadiana Menor (Granada), where there is least protection. This river valley is a particularly important arid site because of its unique flora and fauna, and palaeontological and archaeological findings.
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Gomes, P., and M. Alves. "FLORISTIC AND VEGETATIONAL ASPECTS OF AN INSELBERG IN THE SEMI-ARID REGION OF NORTHEAST BRAZIL." Edinburgh Journal of Botany 66, no. 2 (July 2009): 329–46. http://dx.doi.org/10.1017/s0960428609005241.
Повний текст джерелаАнотація:
Inselbergs are rocky environments that support a unique flora distinct from that of the surrounding area. The objectives of this work were to conduct a floristic inventory of an inselberg in the semi-arid region of Northeast Brazil, and to investigate the relationship between its flora and the flora of the surrounding area. The following questions were addressed: is the species richness comparable to other inselbergs in northeastern Brazil; is the floristic composition of the inselberg more similar to other inselbergs or to the surrounding Caatinga vegetation; and do the similarities in the floristic composition of inselbergs depend on the distance between them? This work documents 201 species in 62 families. Cyperaceae (28 spp.), Euphorbiaceae (19), Poaceae (15), Orchidaceae (11) and Bromeliaceae (9) are the most species-rich families. On the inselberg the plants are distributed in islands found on exposed rock, in fissures and in depressions in the rock. Variations in species richness in the region were assessed by comparison of floristic inventories conducted in other inselbergs of the semi-arid region with those of this study. The flora of the inselberg under investigation is more similar to the flora of other nearby inselbergs than to the vegetation of the surrounding semi-arid region.
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Adel Dhief, Samira Aschi-Smiti, and Mohamed Neffati. "Floristic diversity and plant composition of the arid and Saharan zones of southern Tunisia." GSC Biological and Pharmaceutical Sciences 18, no. 3 (March 30, 2022): 250–73. http://dx.doi.org/10.30574/gscbps.2022.18.3.0081.
Повний текст джерелаАнотація:
Spontaneous plants in arid and desert areas of Tunisia are now experiencing a resurgence of interest not only because of the possibilities of their use for multiple economic and ecological purposes, but also because of their great capacity for potential climate change adaptation. Often considered underused and neglected species, plants in arid and desert areas are of considerable importance. The purpose of this work is to provide knowledge relating to flora and Tunisian vegetation in arid zones. They are structured around various aspects relating to the characterization of this natural and biological wealth and its impact on the quality of the environment. In this work, we studied the flora of the different regions visited (Tataouine, Medenine, Tozeur, Gabes and Kebeli) in southern Tunisia and we surveyed the botanical composition and species diversity in the governorate of Tataouine region during the spring season of 2018. The flora contained about 279 species belonging to 58 families, with 54% annuals and 46% perennials.
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F., Alekbarov,. "Botanical-Geographical Characteristic of Lichens and Mosses of Korchay State Nature Reserve." Bulletin of Science and Practice, no. 1 (January 15, 2023): 76–80. http://dx.doi.org/10.33619/2414-2948/86/09.
Повний текст джерелаАнотація:
The geographical analysis shows that the mosses flora of the Korchay State Nature Reserve was not genetically homogeneous but was composed of various geographical elements included in different botanical-geographic regions. The mosses flora as a whole is boreal — 39.5%, arid — 23.7%. Euryholarctic — 15.8% and mountain species — 10.5% play a certain role in the flora. The flora of lichenes has a nemoral-continental character as a whole. Boreal — 14.0%, euryholarctic — 10.7% and hypoarctomontane — 10.7% species also play a significant role in the flora.
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Fikrət qızı Rüstəmova, Reyhan. "Differentification features of modern arid landscapes of Middle Araz plain." NATURE AND SCIENCE 07, no. 02 (April 23, 2021): 64–67. http://dx.doi.org/10.36719/2707-1146/07/64-67.
Повний текст джерелаАнотація:
The article d4remonstrated Sadarak, Sharur, Boyukduz, Nakhchivan, Julfa, Yayji, Kangarli, Deste, Ordubad, etc., located in the territory of the Nakhchivan Autonomous Republic along the left bank of the Araz River and covering a large area. The features of modern arid-denudation landscape forms formed in such plains as. In the presented scientific work the altered relief, location features of flora and fauna, exposed to anthropogenic influences in the Arazboyu plains of the Nakhchivan Autonomous Republic, as well as the factors that create modern arid landscapes in the area. Key words: Plains of Arazboyu, landscape, anthropogenesis, arid-denudation, differentiation
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Silcock, J. L., R. J. Fensham, and T. G. Martin. "Assessing rarity and threat in an arid-zone flora." Australian Journal of Botany 59, no. 4 (2011): 336. http://dx.doi.org/10.1071/bt10318.
Повний текст джерелаАнотація:
An understanding of rarity and how it relates to extinction risk is a central concern of conservation biology. Classic conceptions of rarity revolve around spatial rarity, based on distribution and abundance, rather than temporal rarity, where species may be common following certain conditions but rare for most of the time. This form of rarity is likely to be especially prevalent in highly variable arid systems. Rarity in the arid zone is also characterised by poorly understood threats, such as grazing, and may also reflect low collection effort given the vast and inaccessible areas involved. This study explores rarity and threat in the arid zone, based on the flora of a large region of western Queensland. The status of all species known to occur in the study area was systematically assessed, and the current list of threatened species was examined for bias in forms of rarity, life forms and habitats. Five threat syndromes were identified, arising from the interaction of plant biology and threatening processes. Over 60 potentially threatened species have been overlooked in the listing process. The list is dominated by narrow endemics from residual and spring habitats and the species from springs at least are genuinely threatened. Widespread but sparsely occurring species are under-represented in the current list, as are grasses. With the exception of spring-dependent species, plant conservation in western Queensland is currently constrained by lack of basic data on distribution, abundance, population dynamics and realistic threat syndromes for nearly all species. Separating the influence of genuine rarity, temporal rarity and low collection effort, as well as a more detailed understanding of threatening processes are needed to address plant conservation in the arid zone.
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Clifford, H. T. "Evolution of the flora and fauna of Arid Australia." Palaeogeography, Palaeoclimatology, Palaeoecology 52, no. 1-2 (November 1985): 169–70. http://dx.doi.org/10.1016/0031-0182(85)90041-0.
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Singh, H. P., and Samir Sarkar. "Vegetational dynamics of Tertiary Himalaya." Journal of Palaeosciences 38 (December 31, 1989): 333–44. http://dx.doi.org/10.54991/jop.1989.1668.
Повний текст джерелаАнотація:
Selected palaeobotanical and palynological records published from the Tertiary Period of Himalaya have been examined and a generalized vegetational frame work has been reconstructed. The diverse Palaeogene floras of Himalaya are marked by moist deciduous and wet semi-evergreen forest types growing mostly under tropical climate in varying type of environments. The tropical families register a decline in the Early Miocene time. The Middle Miocene Himalayan orogeny coincides with proliferation of Abietineae and by the appearance of several subtropical floral elements. Development and diversity of forest types are controlled by the altitudinal belts. The Pliocene floral diversification is related to climatic changes and increased continentality. The wet tropical forests disappeared from the low altitudes, whereas wet subtropical and temperate forests were transformed into dry or moist vegetational types. The appearance of semi-arid and cold conditions forced several moisture-loving plants, either to migrate or perish. The modern composition of the Himalayan flora reveals that it is a partial continuum of Neogene floras which have been progressively enriched by the appearance of several immigrant elements and also by the changes brought in due to evolutionary processes.
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Urbanavichus, G. P. "The lichen coefficient and its meaning in regional lichen flora studies." Novosti sistematiki nizshikh rastenii 43 (2009): 246–60. http://dx.doi.org/10.31111/nsnr/2009.43.246.
Повний текст джерелаАнотація:
The particularities of the lichen coefficient LC (the ratio of lichens to vascular plants, or L : P-ratio) in different geographical regions of the Earth and different areas of Russia are determined on the basis of analysis of numerous quantitative estimations of lichen and vascular plant diversity. High values of LC in Arctic regions are caused by adverse conditions for growth of the vascular plants, while low LC values in plain regions with arid climate are caused by adverse influence of bioclimatic conditions on development of lichen flora. The mountains in temperate latitudes (especially near oceans) and tropics are optimal for forming rich and diverse lichen floras. Data on LC in different nature zones can be used for estimation of lichen species diversity, and to indicate some gaps in researches of regional lichen floras.
Дисертації з теми "Arid flora"
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Easton, Lyndlee Carol, and lyndlee easton@flinders edu au. "LIFE HISTORY STRATEGIES OF AUSTRALIAN SPECIES OF THE HALOPHYTE AND ARID ZONE GENUS FRANKENIA L. (FRANKENIACEAE)." Flinders University. Biological Sciences, 2008. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20081124.105244.
Повний текст джерелаАнотація:
This thesis is a comparative study of the life history strategies, and in particular seed germination requirements, in Australian species of the halophyte plant genus Frankenia L. (Frankeniaceae). Frankenia is a cosmopolitan genus that occurs in Mediterranean, semi-arid, and arid regions on distinctive soil types commonly on saline, sodic or gypseous soils in habitats such as coastal cliffs, and on the margins of salt lakes, salt-pans and saltmarshes (Summerhayes 1930; Barnsley 1982). The plants are small shrubs or cushion-bushes with pink, white or pale purple flowers, and salt-encrusted recurved leaves.
This project investigates germination requirements for Frankenia in relation to seed age, light requirements, temperature preferences, salinity tolerance, and soil characteristics. It also explores two divergent reproductive strategies notably seed packaging strategies in relation to environmental variables. Within the 46 currently recognized endemic Australia species, some species have a few ovules per flower and produce only a few larger seeds per fruit, while other species have many ovules per flower and produce many small seeds per fruit. Large-seededness is thought to increase the probability of successful seedling establishment in drought and salt-stressed environments. As both larger- and smaller-seeded species of Frankenia co-occur in close geographical proximity, hypotheses regarding the advantages of large-seededness in stress environments can be tested. By restricting the analysis of seed mass variation to similar habitats and within a single plant genus, it is possible to test ecological correlates that would otherwise be masked by the strong effects of habitat differences and phylogenetic constraints.
Overall, larger-seeded Frankenia species were demonstrated to be advantageous for rapid germination after transitory water availability, and for providing resources to seedlings if resources became limiting before their successful establishment. Smaller-seeded species delayed germination until both soil-water availability and cooler temperatures persisted over a longer time period, improving chances of successful establishment for the more slowly growing seedlings that are more reliant on their surroundings for resources.
This study produces information on the seed and seedling biology of many Australian species of Frankenia including several that are of conservation significance, e.g. F. crispa with its isolated populations, and the rare and endangered F. plicata. This information is important for the development of conservation management plans for these and other arid zone, halophyte species. In addition, the results of this study are of practical significance in determining the suitability of Frankenia for inclusion in salinity remediation and mine-site rehabilitation projects, and for promoting Frankenia as a drought and salt tolerant garden plant.
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AraÃjo, Adriana Oliveira. "Dynamics of soil organic matter in managed areas and preserved in flona Araripe." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15364.
Повний текст джерелаАнотація:
Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgicoA atual preocupaÃÃo com as mudanÃas climÃticas globais, decorrentes do aumento nas concentraÃÃes de gases de efeito estufa na atmosfera, em especial o CO2, tem despertado a atenÃÃo da comunidade cientÃfica para o ciclo biogeoquÃmico do carbono. Assi, objetivou-se com este trabalho realizar um estudo teÃrico e experimental da dinÃmica da matÃria orgÃnica do solo, como forma de compreender se as alteraÃÃes nas caracterÃsticas fÃsicas, quÃmicas e biolÃgicas do solo influenciam no sequestro e/ou emissÃo de CO2 atmosfÃrico. O estudo foi realizado na Floresta Nacional do Araripe (FLONA- Araripe) e na Unidade de Manejo Florestal (UMF) da Fazenda Pau DâÃrco e Bonfim. Foram selecionados na UMF cinco talhÃes e na Reserva Ambiental e FLONA-Araripe uma Ãrea de aproximadamente 200 m2. Em cada Ãrea foram selecionados cinco pontos aleatÃrios. Foram realizadas 6 coletas durante o perÃodo de 2012, 2013 e 2014 sendo 2 em cada ano nas profundidades de 0-10, 10-20 e 0-20 cm para a realizaÃÃo das analises: fÃsicas, quÃmicas, mineralÃgicas e microbiolÃgicas. Utilizou-se anÃlise de variÃncia, com 6 repetiÃÃes e 7 tratamento. As mÃdias das diferentes profundidades do solo foram comparadas pelo teste de Tukey ao nÃvel de significÃncia 5% aplicou-se a tÃcnica da anÃlise fatorial pelo mÃtodo das componentes principais. Para o estudo teÃrico, utilizou-se o submodelo da dinÃmica da matÃria orgÃnica do solo (MOS) disponibilizado no Aplicativo Century (versÃo 4.0). AcurÃcia das simulaÃÃes foi verificado pelo coeficiente de correlaÃÃo entre dados simulados e observados, calculados pela ferramenta de anÃlise de dados do Microsolft Excel. As Ãreas apresentaram predominÃncias do mineral caulinita e Ãxidos de ferro e alumÃnio nas Ãreas de estudo favorecendo a proteÃÃo do material orgÃnico. Na FLONA-Araripe foram encontrados os maiores teores de COT, ClÃbil, estoque de C, CMIC, C-MOL e, os menores valores da RBS e qCO2, o contrÃrio ocorreu da UMF. AnÃlise de componente principal elucidou que dos oito atributos obtidos na anÃlise de comunalidades sÃo necessÃrios apenas cinco para a compreensÃo da dinÃmica da MOS, resultando em 2 atributos: COT, ClÃbil e o IMC e o NT e CMIC. Na calibraÃÃo, o PRDX adequado foi (140 e 11 g C m-2) respectivamente, para as Ãreas da FLONA-Araripe e UMF. Os ajustes realizados nas constantes de decaimento de carbono em ambas as Ãreas (K) FLONA-Araripe DEC4 (0,00402) DEC5 (0,22500) e DEC3.2 (6,5000) geraram os seguintes erros (0,04;3,7; 2,3%) respectivamente. Os fatores de correÃÃo A*, foram (0,89) para carbono ativo (CA) e carbono passivo (CP) e (1,12) para carbono lento (CL). As variÃveis de entrada temperatura mÃxima e mÃnima foram mais sensÃveis. A validaÃÃo das simulaÃÃes no aplicativo na UMF elucidou que o DEC4 nÃo ocorre reduÃÃo de C nos dois primeiros meses e estÃvel aos 4 anos. DEC5 as reduÃÃes de C nos primeiros meses de manejo e recuperaÃÃo aos 7anos e o DEC 3.2 reduÃÃes de C nos primeiros meses de manejo e estÃvel 5 anos. Neste sentido, a utilizaÃÃo do aplicativo com ajustes necessÃrios nas constantes de decaimento (DEC4, DEC5 e DEC3.2) responde satisfatoriamente ao acumulado de carbono no solo em funÃÃo da qualidade e quantidade da MOS elucidando que a dinÃmica da MOS influencia no sequestro de CO2.
The current concern about global climate change resulting from the increase in greenhouse gas concentrations in the atmosphere, especially CO2, has aroused the attention of the scientific community to the biogeochemical cycling of carbon. This study performed a theoretical and experimental analysis of the dynamics of soil organic matter in an area subjected to clear cutting of native vegetation to understand the influence of changes in physical, chemical and biological soil properties on sequestration and/or emission of atmospheric CO2. The study was conducted at the Araripe National Forest and at the Unit of Forest Management of the Farm Pau dâArco and Bonfim. In the area of sustainable management, there were selected 5 out of 22 plots existing and an area of about 200 m2 in the Environmental Reserve and FLONA- Araripe. In each area, we selected five random sites, at the layers 0-10, and 10-20 and 0-20 cm from 2012 2013 and 2014 amounting to 6 collections. The following analyses were performed: physical, chemical, mineralogical and microbiological. Climate data used in the Application Century, referring to the monthly rainfall, were obtained at the weather station of FLONA- Araripe. It was applied analysis of variance, with 6 replications and 7 treatments at the layers: 0-10, 10-20 and 0-20 cm. Mean values of the different layers were compared by Tukeyâs test at 5% probability, in the software Statistical Analysis Systems, using the factorial analysis by the main components method. For the theoretical study, we used the sub-model of the dynamics of soil organic matter available at Century 4.0. The accuracy of the simulations was verified by the correlation coefficient between simulated and observed data, calculated by Microsoft Excel data analysis tool. The areas showed predominance of mineral kaolinite and iron and aluminum oxides, thus favoring the protection of organic material. At FLONA- Araripe, we found the largest contents of TCO, Clabile, C storage, CMIC, C-MOL and lower RBS and qCO2, the opposite occurred for UMF. Principal component analysis evidenced that from 8 attributes obtained from the commonality analysis only 5 are required to understand the dynamics of MOS, resulting in two factors: TCO, Clabile and IMC and the NT and CMIC. In the calibration, the appropriate PRDX was (140 and 11 g C m-2) respectively for FLONA and UMF. The fits of the carbon decay constants in both areas (K) FLONA- Araripe DEC4 (0.00402) DEC5 (0.22500) and DEC3.2 (6.5000) produced the following errors (0.04, 3.7, 2.3%). The correction factors A* were (0.89) for carbon ative (CA) and carbon passive (CP) and (1.12) for carbon leve (CL). The input variables maximum and minimum temperatures were the most sensitive. The validation of the application in UMF elucidated that the DEC4 there was no reduction in C in the first two months, being stable at four years. DEC5 reductions in C in the first months of management and recovery 7 years and the DEC 3.2 reductions C in the first months of management and stable 5 years. In this sense, the use of the application with necessary fits in decay constants (DEC4, DEC5 and DEC3.2) responds satisfactorily to the carbon accumulated in the soil according to the quality and quantity elucidating the dynamics of SOM influences the CO2 sequestration.
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McDonald, John Thomas. "Biogeography of Australian chenopods: landscape in the evolution of an arid flora." Thesis, 2020. http://hdl.handle.net/2440/126029.
Повний текст джерелаАнотація:
Chenopod taxa are globally prominent in deserts and on coastlines which suggests an evolutionary link, known as a littoral connection, and that remains unexplained. Australia is a global centre of chenopod diversity, where serial invasions of eleven immigrant clades over the last 16 million years, produced ca. 300 species within the continent. Six of these clades adaptively radiated in the Late Miocene-Pliocene within the continental interior. Assuming a littoral connection as a working premise, Australian landscape history can inform the course of chenopod evolution. Almost all species are endemic and each clade must exhibit the three elements of the connection. Coasts and deserts share related taxa, marshy, sandy or saline habitats and adaptive traits for habitat occupation. Phytogeographic analysis defines three groups of Australian chenopods. A Subcontinental Arid-Mediterranean Group has 97% of all species with Centres of Diversity in the west (Yilgarn) and east (Eyre-Murray). Sharing 129 species, the centres are strongly linked through the Great Victoria Desert, suggesting a common migration route. The chenopod poor Northern Tropical and Eastern Highlands groups suggest the barriers to range expansions. Diversification largely occurred inland, with 246 species being remote from coastlines. Only the Scleroblitum Clade lacks coastal taxa, but it has an estuarine ancestor. Under the habitat element of a littoral connection, migration landscapes should be marshy, sandy or saline. Chenopod taxa mainly inhabit Riverine Desert (141 species) and Desert Lake (113 species) within continental drainage systems. Most coastal species are of diverse coastal habitats, with a capacity for inland range expansion through marshy ecosystems. Riverine Desert developed as chenopod clades arrived, connecting coastlines to both Centres of Diversity. Youth and discontinuity of Desert Lake precludes initial continental migration but promoted Pleistocene speciation. Sand Desert has relatively few species; a Pleistocene age postdates inland range expansion and its formation contributed to species population disjunction in rich clades. Molecular phylogeny of Australian Atriplex Clade 1 reveals west to east migrations in two lineages after immigrant landfall on the west coast. One lineage migrated through inland Australia, initially diversifying in Stony Desert. The other lineage is limited to the southern coast and Western Australian catchments. Poor phylogenetic resolution in Atriplex Clade 2 precluded further interpretation, but initial diversification post-dates that of Atriplex Clade 1. Coastal species possibly have basal phylogenetic positions in both clades. These findings suggest evolutionary stages of Australian chenopods involve: coastal landfall, initial inland migration through declining palaeodrainage systems and diversification in drying landscapes, along two possible biogeographic patterns. Either an initial, widespread inland migration fragmented into the Yilgarn and Eyre-Murray Centres, or separate, incipient Centres subsequently enlarged and exchanged species. Species extinction may be associated with dune field formation and loss of ancestral coastal taxa. Riverine Desert provided the species pool for significant speciation in Desert Lake and Stony Desert land types. Each immigrant clade observes the taxon, habitat and trait elements of a littoral connection, which remains the most likely evolutionary scenario for these iconic Australian arid taxa.Thesis (Ph.D.) -- University of Adelaide, School of Biological Sciences, 2020
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DVORSKÝ, Miroslav. "Ecology of alpine plants in NW Himalaya." Doctoral thesis, 2014. http://www.nusl.cz/ntk/nusl-172974.
Повний текст джерелаАнотація:
The westernmost spur of the Tibetan Plateau stretches to Eastern Ladakh in India. It is a region which remains poorly explored because of challenging conditions and long periods of political instability. At the same time, it is one of the highest places on earth supporting angiosperm life, which goes beyond 6000 m a.s.l. here. The whole region, due its remoteness, is practically unaffected by plant invasions and direct human activities. Thus, Ladakh represents a kind of "natural experiment", providing very long gradient of elevation suitable for comparative functional ecology as well as for testing various hypotheses concerning limitations of vascular plants. Arid climate and extreme elevations are the common factors. Our team pursued the goal of systematic botanical and ecological exploration of Ladakh, started by late Leoš Klimeš. This thesis provides insight into the main vegetation types, clonality in plants, plant-plant interactions and soil phototroph communities.
Книги з теми "Arid flora"
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Food and Agriculture Organization. Food Policy and Nutrition Division., ed. Traditional food plants: A resource book for promoting the exploitation and consumption of food plants in arid, semi-arid and sub-humid lands of Eastern Africa. Rome: Food and Agriculture Organization, 1988.
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Patil-Toradmal, Pragati, Agastirishi Toradmal, and Vilas Patil. Flora of Semi-Arid Region: Special Reference to Karjat Tehsil of Ahmednagar District, Maharashtra, India. LAP LAMBERT Academic Publishing, 2019.
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Erickson, Todd, Russell Barrett, David Merritt, and Kingsley Dixon, eds. Pilbara Seed Atlas and Field Guide. CSIRO Publishing, 2016. http://dx.doi.org/10.1071/9781486305537.
Повний текст джерелаАнотація:
The Pilbara region in Australia’s arid northwest is rich in flora that is suited to extreme temperatures and boom and bust cycles of moisture availability. It is also a region important for its natural resources. In places where mining activities have finished and the land is under management for ecological restoration, there is increasing demand for information about native plant communities and the biology of their seeds.
Pilbara Seed Atlas and Field Guide is the first book to combine plant identification with robust, scientific criteria for cost-effective seed-based rehabilitation. It describes 103 regional plant taxa and provides guidelines for effective collection, cleaning, storage and germination of their seeds. It addresses issues such as timing of collection, quality and viability of seed, and dormancy release, which are essential for successful restoration programs. With photographs to portray the subtle differences and unique features of each species’ biology, this book will be of great use to practitioners in the field, including environmental consultants, rehabilitation companies, commercial seed collectors and government authorities, as well as naturalists and people interested in growing the Pilbara’s remarkable plants.
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La Flora Vol Ii Arie C Antiche Italiane. Wilhelm Hansen, 1992.
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House, APN, and CE Harwood, eds. Australian Dry-zone Acacias for Human Food. CSIRO Publishing, 1992. http://dx.doi.org/10.1071/9780643100718.
Повний текст джерелаАнотація:
Australia's unique and diverse woody flora has become socially, economically and environmentally important in many other countries. The seed of some Acacia species showing promise in planting programs in semi-arid areas has been a part of the traditional diet of Australia's Aboriginal people. The dry seed may be ground to flour, mixed with water and eaten as a paste or baked to form a cake. Forest tree breeding has focussed on wood production, selecting taller, faster-growing varieties.
The same principles of selection and improvement can be applied to improve seed yields and nutritional properties of shrubs. The selection criteria would include seed characters such as taste, seed coat thickness and nutritive value to maximize their food value. The book looks at the possibility of building upon the traditional knowledge of Aboriginal Australians, using modern scientific methods, for the benefit of people in the world's dry areas.
Australian Dry-zone Acacias for Human Food documents the proceedings of a workshop held at Glen Helen, Northern Territory, Australia. The purpose of the meeting was to examine the idea of developing the food value of the seed of Australia's dry-zone acacias.
This book covers a summary of the workshop conlcusions, the invited papers, and recommendations of the working groups.
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Underhill, Jamie. Aria: Personalised Green Jungle Theme Floral Design Aria Notebook Journal 120 Pages. Independently Published, 2021.
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Designs, Grabitees Customized Name. Aria: Personalized Name Floral Blank Lined Journal for Mermaid Lover Girls and Women. Independently Published, 2020.
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Nomen Clature - Aria Books. A : Aria: Aria Monogrammed Personalised Custom Name Daily Planner / Organiser / to Do List - 6x9 - Letter a Monogram - White Floral Water Colour Theme. Independently Published, 2020.
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Press, Floral. Aria Notebook - Personalized Floral Unicorn Journal for Girls: Best Christmas, Birthday and Thanksgiving Gift for Girls , Women, Daughter, Sister and Mother. Independently Published, 2021.
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lists, Aria To do. Aria Dream It Plan It Do It: Personalized Name Journal Gift for Girls and Women Named Aria - Organizer to Do List Notebook for Writing Notes and Thoughts - Christmas Gift for Her - Watercolor Floral Design Edition. Independently Published, 2021.
Знайти повний текст джерелаЧастини книг з теми "Arid flora"
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Mezrioui, Nour-Eddine, and Brahim Oudra. "Dynamics of Picoplankton and Microplankton Flora in the Experimental Wastewater Stabilization Ponds in the Arid Region of Marrakech, Morocco and Cyanobacteria Effect on Escherichia coli and Vibrio cholerae Survival." In Wastewater Treatment with Algae, 165–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-10863-5_10.
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"Checklist of the Flora." In Arid Land Resources & Their Mana, 201–6. Routledge, 2012. http://dx.doi.org/10.4324/9780203039250-20.
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C. González, Cynthia, Antonella M. Lista, Cristian Silva, Mauricio A. Joffe, Gastón E. Ponce, Patricia L. Simón, and Magdalena Llorens. "The Floristic-Holistic Method for Arid, Semiarid, and Subhumid Areas: A Tool for the Revaluation of Floristic Diversity, Conservation, and Protection of the Ecosystem." In Sustainable Development. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.106226.
Повний текст джерелаАнотація:
The valorization of methods for comprehensive data collection is one of the fundamental tools to establish concrete bases and is applicable to lines of work in conservation, preservation, and protection of ecosystems. During the last 20 years, from the Botany Laboratory and Herbarium Trelew, we have valued the Floristic-Holistic Method that we have been adapting, for flora surveys. Method is intensively used in some Argentine provinces of arid, semiarid, and subhumid zones of the South American Arid Diagonal (Santa Cruz, Chubut, Río Negro, Neuquén, Mendoza, and arid islands of the Patagonian Atlantic coast). This revaluation focuses its importance on not only providing information on ecological parameters (bare soil, topsoil, living plant cover, and dead plant cover), richness, equitability, and floristic diversity, but also on status, conservation, botanical types, biological forms, adaptations, plant density, percentages of protected species, potential invasions of exotic species, forage productivity, and animal receptivity. The information is comprehensive and adaptable to different situations, applicable to different plant associations, types of terrain, and landscape units (open and closed mount, shrubby steppes, subshrubs, grasses, wastelands, rocky fields, peladales, and all kinds of modified areas). The method thus holistically conceptualizes ecosystem goods and services, allowing their study at different scales.
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Djamel, Brahimi, Rahmouni Abdelkader, Brahimi Abdelghani, and Mesli Lotfi. "Evaluating Insects as Bioindicators of the Wetland Environment Quality (Arid Region of Algeria)." In Vegetation Index and Dynamics [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97700.
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The wetland of Naâma situated in the arid region of Alegria offers an important fauna and flora diversity due to its geographical location it constitutes the main resting place in North Africa for migratory birds. Insects are used as bioindicators, due to their sensitivity to environmental conditions which, because of their ecological peculiarities, gives information on the characteristics of terrestrial and aquatic environments. The aim of this study is to know and specify the entomofauna bio-indicator of the quality of the aquatic environment of the wetland Naâma (SW Algeria). The study carried out in the wetland from September 2017 to September 2020. Benthic insects were sampled according to the IBGN protocol (Standard Global Biological Index). Study and statistical analysis of insects communities was based by the use of the structural and statistical index, Correspondence factor analysis (CFA), and The ascending hierarchical classification (C.H.A). The results show that the collected insect 51 species, belong to 9 orders, The Coleoptera order is the most represented with 11 species, followed by the Odonata with six species, Lepidoptera ranks third with five species followed by Diptera with 03 species. The various indicators used, namely the specific richness (51 species), the Shannon index (1.01 bits), and fairness (0.56) show that this environment is characterized by significant fauna biodiversity. The study of the hydro-biological quality of the water courses of this site, assessed by the IBGN method showed a good hydro-biological quality with moderate pollution (IBGN = 14). This pollution is precisely marked by the requirement of Ephemeroptera and the disappearance of Plecoptera. These results lay the foundation for any biomonitoring action of the ecological quality of the waters of this wetland.
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"axillary, on 5-10 mm long stems. Sepals 5-7 mm long, elliptical, narrow-scarious along margin. Petals 7-10 mm long, oblong-obovate or oval, narrowing into long cuneate claw, orange-colored at base, white in upper portion. Capsules 16-24 mm long, 6-10 (12) mm broad, oblong-oval or oval, pentagonal; wings 2-3 mm broad. In solonchaks and solonetzic steppes, sometimes on rocky steppe slopes. West. Sib.: AL—Go (Chuya river valley: facing Chegan river estuary—class, hab. and others in Chuya steppe).— Mid. Asia, West. China, Mongolia. Map 21. 5. Z. pterocarpum subsp. tuvinicum Peschkova, subsp. nova. A subspecie typica foliis plerumque trijugis (rarius bijugis), foliolis oblongo-linearibus, petiolis apice processu aculeoli-formi molli subindistincto albido recto vel subincurvato distinguitur. Typus. Tuva, dist. Tes-Chemensis, declive australe jugi Tannu-Ola Orientalis, 1200 m.s.m., vallis FI. Irbitei, silva salicoso-populosa variiherbosa, 3 VIII 1972, V. Chanminczun, L. Kupalova, L. Eremenko (NS, isotypus LE). Unlike type subspecies, leaves usually with 3 (rarely 2) pairs of oblong-lanceolate leaflets. Leaf petioles with faint whitish, erect or slightly curved soft spiniform shoot at tip. In arid solonetzic meadows, river valleys, nannophyte solonchak semideserts. Cen. Sib.: TU (Irbitei river valley in Tes-Khemsk region—class, hab.—Ak-Chyra settlement, bank of Amdaigyn-Khol’ lake).—Endemic. 2. Tribulus L. 1. T. terrestris L. 1753, Sp. Pl.: 387. Annual with slender weak root and (3)10-60 cm tall stems diffuse along ground and branched right from base; together with leaf petioles and pedicels, covered with long distant and short semiappressed hairs bent at tip. Leaves (1) 2-6 cm long, (0.5) 1-3 cm broad, more often opposite, paripinnate, with small lanceolate-deltoid stipules; leaflets 4-7 pairs, 3-13 mm long, 34 1-5 mm broad, oblong or oblong-elliptical, asymmetric, obtuse, on very short petiolules, more or less compactly (specially young) covered beneath with long slender appressed hairs, glabrescent with age, subglabrous on upper surface. Flowers single, axillary, on short (4-10 mm) stems. Sepals 3-5 mm long, lanceolate, hairy outside. Petals narrow-obovate, about 10 mm long,." In Flora of Siberia, Vol. 10, 46–55. CRC Press, 2006. http://dx.doi.org/10.1201/9781482294248-3.
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Din Sheikh, Feroz. "Status of World’s Unique Animal Genetic Resource of Ladakh." In Population Genetics [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.103767.
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Ladakh is the only typical cold arid zone of our country with extreme climate and hostile condition, the area makes its flora and fauna a unique one and distinct from rest of the country. Around 60% of the farmers of Ladakh are Pastoralist and 40% of the farmers are agriculturist and the majority of the economic income comes from animal rearing in Ladakh. It has some of the world’s best animal genetic resource in the form of Changthangi Pashmina goats, Changthangi Sheep, Malra Goat, Malluk and Purig Sheep, Semi domesticated Yak and its crosses, Bactrian (Double Humped Camel) Zanskari horse, Ladakhi Cattle and Changthangi Dog. All these livestock contributes a lot to the income of the farmers of Ladakh especially the Changthang nomads who are completely dependent on livestock rearing. The livestock in Changthang is reared on extensive system on high altitude pastureland. During the past few decades these unique germplasms are facing several threats for its eco-friendly existence with the human populations. These threats and constraints are figured with possible recommendation and solution in the present study. Ladakh has been deprived of basic research facilities in animal science sector for so many years due to which this unique genetic resources are declining in terms of numbers as well as in production. Another reason is shifting of Ladakh economy from agro pastoralist to tourism business. If necessary steps are not taken immediately a time will reach that all this precious animal will be lost forever. The present article describes the present status and critical issues pertaining to animal genetic resource of Ladakh.
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Hammerson, Geoffrey A., and Larry E. Morse. "State of the States: Geographic Patterns of Diversity, Rarity, and Endemism." In Precious Heritage. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195125191.003.0011.
Повний текст джерелаАнотація:
The natural geography of the 50 states varies tremendously, supporting an equally varied suite of wild species—from flocks of tropical birds in southern Florida to caribou migrations across the Alaskan tundra. The geography of risk, too, varies across the nation, reflecting the interaction between natural and human history. Similarly, present-day land and water uses will largely determine the future diversity and condition of the flora and fauna. We can learn much, though, from looking at the current condition of a state’s biota, since this both reflects the past and helps illuminate the future. A state’s ecological complexion and the evolutionary history of its biota are the primary determinants of its biological diversity. These environmental factors have encouraged spectacular diversification in many regions: for instance, the freshwater fish fauna in the Southeast, the magnificent conifers along the Pacific cordillera, and the small mammal assemblages of the arid Southwest. Conversely, geological events such as the expansion and contraction of the ice sheets have left other areas of the country with a more modest array of species. States, however, are artificial constructs laid out on the landscape’s natural ecological patterns. While some state lines follow natural boundaries, such as shorelines or major rivers, most cut across the land with no sensitivity to natural features or topography. Nonetheless, urban and rural dwellers alike identify with the major ecological regions within which they live, and this is often the source of considerable pride. Montana is “big sky country,” referring to the vast open plains that sweep up against the eastern phalanx of the Rocky Mountains. California’s moniker “the golden state” now refers more to its tawny hills of summer—unfortunately at present composed mostly of alien species—than to the nuggets first found at Sutter’s Creek. Maryland, home of the Chesapeake Bay, offers the tasty blue crab (Callinectes sapidus) as its unofficial invertebrate mascot. The list could go on, evidenced by the growing number of states that offer vanity license plates celebrating their natural environment. Natural features have always played a dominant role in determining patterns of settlement and land use.
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Nabhan, Gary P. "Cultural Dispersal of Plants and Reptiles." In Island Biogeography in the Sea of Cortés II. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195133462.003.0022.
Повний текст джерелаАнотація:
The equilibrium theory of island biogeography (MacArthur and Wilson 1967) gives little attention to the human forces that have contributed to shape the biota of archipelagos. Most of the studies that have been done to test the theory, however, concentrated mostly on natural forces and less on the ancient influences of sea-faring cultures on island biodiversity. Although many biologists have followed MacArthur and Wilson’s lead by charting the natural processes shaping the island biogeography of the midriff islands in the Sea of Cortés (Soulé and Sloan 1966; Case and Cody 1983), the cultural dispersal of native plants and animals across the gulf has hardly been taken into account in these pattern analyses of the region’s biota. Nevertheless, new opportunities have emerged. Analyses made possible by novel genetic tools can now be combined with recent revelations of oral history from Seri Indian seafarers who have frequented the midriff islands and who know of their ancestors’ activities on the islands. Archaeologists have found indigenous remains on San Esteban, Ángel de la Guarda, San Lorenzo Norte and Sur, and Tiburón, with dateable occupation sequences on San Esteban for a minimum of 350 years (Bowen 2000). We can now begin to reconcile data from cultural geography, genetics, and biogeography to track cultural dispersal with new precision. A cohesive but curious story has begun to emerge from this unlikely partnership of genetic analyses performed in laboratories and oral history documentation in the field: historic seafarers of this arid region have carried with them flora and fauna that became established on islands other than those accessible by natural routes of dispersal (Grismer 1994; Petren and Case 1996, 1997; Nabhan in press). This should come as no surprise to scientists who read beyond their own area of interest: similar cultural dispersal dynamics have been documented in Polynesia and Melanesia (McKeown 1978; Fisher 1997; Austin 1999) and in Central America and the Caribbean (Bennett 1992; Case 1996). Factoring indigenous cultural dispersal into island biogeography has led to very different views of biotic origins and migrations than those offered by a purely biological perspective.
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Emery, K. O., and David Neev. "Sodom and Gomorrah Event." In The Destruction of Sodom, Gomorrah, and Jericho. Oxford University Press, 1995. http://dx.doi.org/10.1093/oso/9780195090949.003.0009.
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About 7800 B.P. after the first effects of warmings and droughts associated with the Atlantic Interval, many people of the Mideast moved into river floodplains where suitable agricultural soils and freshwater were available. Prominent examples are in Mesopotamia, the Nile Valley, and along the Jordan-Dead Sea rift. The extremely dry climates occasionally improved because of small fluctuations within the Chalcolithic and a larger one during Early Bronze II, when there was a 250-year wet interval. These climatic changes explain the settling, flourishing, and abandonment by the Ghassulians about 6000 B.C. and of the city of Arad, 4900 to 4650 B.P. at the fringe of the desert (R. Amiran and Gophna, 1989, n. 18; D. Amiran, 1991; Gilead, 1993). During the Early Bronze ages overall the climatic conditions in the Dead Sea region were not appreciably different from those at present, as attested by fossil flora found in excavations at Bab edh-Dhr’a and Numeira (McCreery, 1980). High yields of agriculture in fertile irrigated areas were an incentive to settle in the Plain of Sodom. This settling gradually intensified within the fertile plains of the Jordan-Dead Sea region as well as in Canaan through Early Bronze I and II but weakened toward the end of Early Bronze III. This is indicated by the pattern of settlements that developed from individual villages to city-states with satellite villages—mostly because of economic and social motivations— which later were changed into fortified communities (Esse, 1989). A gradual increase in fortification of Early Bronze settlements along the Dead Sea and Jordan Valley basins and the position of some of them along the narrow elevated step-faulted strip of the east foothills (Zori, 1962;Ben-Arieh, 1965; Rast, 1987 and personal communication, 1989) indicate increased need for defense by settlers against raids and invasions. These evidences of stress probably resulted from gradual climatic drying and warming. Investments in defense facilities were worthwhile if increased productivity was tempting enough. Such areas could have been found not only along the east foothills but also at the foot of the Amazyahu fault escarpment and in the delta of Nahal Zohar north of Mount Sedom if fresh or slightly brackish water was available there during the Early Bronze age.
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"Par let aria floridana. a. Section of plant, b. Flower, side view, c. Flower, longitudinally dissected, d. Fruit, e. Achene. f. Floral diagram. Drawn by Priscilla Fawcett. From Correll and Correll 1982." In Florida Ethnobotany, 840–43. CRC Press, 2004. http://dx.doi.org/10.1201/9780203491881-138.
Повний текст джерелаТези доповідей конференцій з теми "Arid flora"
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Miller, Gifford H., Marilyn L. Fogel, John W. Magee, and Michael K. Gagan. "DISENTANGLING THE ROLES OF HUMAN COLONIZATION AND CLIMATE ON DISRUPTIONS TO THE FLORA AND FAUNA OF SEMI-ARID AUSTRALIA DURING THE LATE QUATERNARY." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-284984.
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Radoi, Radu, Ioan Pavel, Corneliu Cristescu, and Liliana Dumitrescu. "PRODUCTION OF DOMESTIC HOT WATER IN A SUSTAINABLE WAY BY USING A COMBINED SOLAR - TLUD SYSTEM." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b2/v2/34.
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Fossil fuels are an exhaustible resource on Earth, and their use pollutes the environment massively. The population of the planet has grown a lot, and for the production of domestic hot water, to ensure a decent standard of living, it is necessary to consume increasing quantities of fossil fuels. The very high level of greenhouse gases released into the atmosphere leads to an increase in average of annual temperature and climate change. Climate change is manifested by the melting of the ice caps, which has the consequence of increasing the level of the seas and oceans. Climate change also leads to extreme weather events such as floods, heat waves or the appearance of arid areas. Risks to human health have increased through deaths caused by heat or by changing the way some diseases are spread. Risks also exist for flora and wildlife due to rapid climate change.Many species of animals migrate, and other species of animals and plants are likely to disappear. Climate change also leads to costs for society and the economy due to damage to property and infrastructure, which have been more than 90 billion euros in the last 30 years, just because of the floods. In order to reduce the effects of environmental pollution, ecological energy production solutions need to be expanded. The article presents the creation of an experimental stand of a Solar - TLUD stove combined system for the production of domestic hot water in a sustainable way. TLUD is the acronym for "Top-Lit UpDraft". The advantage of the combined heat system is that it can provide thermal energy both during the day and at night. If the atmospheric conditions are unfavorable (clouds, fog) and do not allow the water to be heated only with the solar panel, TLUD gas stove can be used to supplement the energy. The TLUD stove has low Carbon Monoxide (CO) and Particulate Matter (PM) emissions. After gasification, about 10% of the carbon contained in the biomass is thermally stabilized and can be used as a "biochar" in agriculture or it can be burnt completely, resulting in very little ash. The stand is composed of a solar thermal panel, a TLUD stove, a boiler for hot water storage and an automation system with circulation pumps and temperature sensors. To record the experimental results, a data acquisition board was used, with which data were recorded from a series of temperature and flow transducers located in the installation. Experimental results include diagrams for temperature variation, available energy and heat accumulated in the boiler. Keywords: combined thermal system, TLUD stove, domestic hot water, solar thermal panel, data aquisition system
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Carvalho, Braulio Fernandes de, and Gustavo Nogueira Barreto. "DESAFIOS AO USO SUSTENTÁVEL DA ARIE DA LAGOA DO PORTINHO, NO LITORAL DO PIAUÍ." In I Congresso Brasileiro de Especialidades Biológicas On-line. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/2652.
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Introdução: A Lagoa do Portinho é uma Área de Relevante Interesse Ecológico (ARIE) criada pelo decreto estadual 18346 (08/07/2019), no território de Parnaíba e Luís Correia, ambos no litoral piauiense. É uma Unidade de Conservação de uso sustentável, com a finalidade de conservar ecossistemas naturais de restinga, dunas e lagoas. O local contava com complexo de bares, em sua maioria soterrado pelas dunas, e a lagoa ficou seca por anos. Com o retorno das águas, retornaram os turistas e visitantes. Objetivos: Identificar impactos negativos atuais do uso da ARIE da Lagoa do Portinho sobre o ambiente e a flora e a fauna nativas. Material e Métodos: fizeram-se visitas de campo e análise de imagens de satélite (Google Earth Pro), de janeiro a agosto de 2021. Resultados: Observou-se o tráfego de veículos motorizados na área das dunas, bem como a presença de animais herbívoros exóticos, soltos ou sob pastoreio, que dificultam a fixação de vegetação nativa sobre as dunas, área naturalmente hostil a maioria dos vegetais. A fixação prejudicada das dunas favorece o avanço acelerado destas sobre a pista, a lagoa e a vegetação de capoeira, onde se observam exemplares de diversas espécies, tais como: Jatobá-do-cerrado (Hymenaea sp.), Juazeiro (Ziziphus joazeiro), Catingueira (Cenostigma pyramidale), Cajueiro (Anacardium occidentale), Cagaita (Eugenia dysenterica) e Copaíba (Copaifera martii). Ademais o tráfego de veículos motorizados pode oferecer risco aos ninhos de aves que nidificam no chão, como Corujas-buraqueiras (Athene cunicularia) e Quero-queros (Vanellus chilensis), bem como as que se alimentam na margem, a exemplo da Garça-branca-pequena (Egretta thula) prejudicando ainda a prática de observação ornitológica. Conclusão: Para que o uso da ARIE seja sustentável de fato, é necessário planejamento para evitar danos à vida silvestre e a paisagem. Dessa forma, recomenda-se a demarcação de rotas fixas para veículos, como o feito nas dunas de Caucaia-CE. Além disso, deve-se cercar as áreas críticas, para evitar a herbivoria pelo gado, e o favorecimento da sucessão ecológica, resultando na fixação das dunas. Fazem-se necessários planejamento, investimento e fiscalização para manter conservada a ARIE da Lagoa do Portinho e garantir o desenvolvimento turístico a longo prazo.