Relevant bibliographies by topics / Diversity distribution

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Diversity distribution'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Diversity distribution"

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McCown, Phillip J., Keith A. Corbino, Shira Stav, Madeline E. Sherlock, and Ronald R. Breaker. "Riboswitch diversity and distribution." RNA 23, no. 7 (April 10, 2017): 995–1011. http://dx.doi.org/10.1261/rna.061234.117.

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Taylor, F. J. R., Mona Hoppenrath, and Juan F. Saldarriaga. "Dinoflagellate diversity and distribution." Biodiversity and Conservation 17, no. 2 (October 23, 2007): 407–18. http://dx.doi.org/10.1007/s10531-007-9258-3.

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Xu, Xu, Xu-Dong Gou, Sui Wan, Hang-Yu Liu, Hai-Bo Wei, Jian-Rong Liu, Jia-Hui Ding, et al. "Anomozamites (Bennettitales) in China: species diversity and temporo-spatial distribution." Palaeontographica Abteilung B 300, no. 1-6 (December 12, 2019): 21–46. http://dx.doi.org/10.1127/palb/2019/0067.

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Ichikawa, Atsunobu. "Water Distribution and Cultural Diversity." Japan journal of water pollution research 14, no. 4 (1991): 203. http://dx.doi.org/10.2965/jswe1978.14.203.

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Schwan, Tom G., Sandra J. Raffel, Merry E. Schrumpf, and Stephen F. Porcella. "Diversity and Distribution ofBorrelia hermsii." Emerging Infectious Diseases 13, no. 3 (March 2007): 436–42. http://dx.doi.org/10.3201/eid1303.060958.

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Baden, Andrea L. "Primates: Diversity, distribution, and evolution." Evolutionary Anthropology: Issues, News, and Reviews 22, no. 6 (November 2013): 312–13. http://dx.doi.org/10.1002/evan.21381.

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Phillips, Helen R. P., Carlos A. Guerra, Marie L. C. Bartz, Maria J. I. Briones, George Brown, Thomas W. Crowther, Olga Ferlian, et al. "Global distribution of earthworm diversity." Science 366, no. 6464 (October 24, 2019): 480–85. http://dx.doi.org/10.1126/science.aax4851.

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Soil organisms, including earthworms, are a key component of terrestrial ecosystems. However, little is known about their diversity, their distribution, and the threats affecting them. We compiled a global dataset of sampled earthworm communities from 9212 sites in 57 countries as a basis for predicting patterns in earthworm diversity, abundance, and biomass. We found that local species richness and abundance typically peaked at mid-latitudes, displaying patterns opposite to those observed in aboveground organisms. However, high species dissimilarity across tropical locations may cause diversity across the entirety of the tropics to be higher than elsewhere. Climate variables and habitat cover were found to be more important in shaping earthworm communities than soil properties. These findings suggest that climate and habitat change may have serious implications for earthworm communities and for the functions they provide.
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Pereira, Iris Müller, and Aly Valderrama. "Diversity and distribution of Bryophytes and Lichens of El Colorado, Central Chile." Nova Hedwigia 83, no. 1-2 (August 1, 2006): 117–27. http://dx.doi.org/10.1127/0029-5035/2006/0083-0117.

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Paris, Harry S. "Summer Squash: History, Diversity, and Distribution." HortTechnology 6, no. 1 (January 1996): 6–13. http://dx.doi.org/10.21273/horttech.6.1.6.

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Summer squash (Cucurbita pepo L.) is grown in many temperate and subtropical regions, ranking high in economic importance among vegetable crops worldwide. A native of North America, summer squash has been grown in Europe since the Renaissance. There are six extant horticultural groups of summer squash: cocozelle, crookneck, scallop, straightneck, vegetable marrow, and zucchini. Most of these groups have existed for hundreds of years. Their differing fruit shapes result in their differential adaptations to various methods of culinary preparation. Differences in flavor, while often subtle, are readily apparent in some instances. The groups differ in geographical distribution and economic importance. The zucchini group, a relatively recent development, has undergone intensive breeding in the United States and Europe and is probably by far the most widely grown and economically important of the summer squash.
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Knudsen, Jette T., Roger Eriksson, Jonathan Gershenzon, and Bertil Ståhl. "Diversity and Distribution of Floral Scent." Botanical Review 72, no. 1 (March 2006): 1–120. http://dx.doi.org/10.1663/0006-8101(2006)72[1:dadofs]2.0.co;2.

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Dissertations / Theses on the topic "Diversity distribution"

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Chen, Youhua. "Microarthropod diversity and distribution in Southwestern Canada." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44051.

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Microarthropod diversity patterns were investigated in southwestern British Columbia, Canada. We surveyed soil microarthropods associated with moss carpets on exposed rocky outcrops. Our survey identified 352 morphospecies in 32 sites spanning a 130 km 60 km area. Previous studies have interpreted strong correlations of species composition with environmental factors as evidence of niche limitation, and strong correlations with spatial factors as evidence of dispersal limitation. Here, we examine 18 ecological variables relevant to either spatial location or environmental aspects of ecological processes, and evaluate their influences on the microarthropod community. We tested whether the relative importance of spatial and environmental factors was concordant between various community attributes including composition, abundance and species richness, and between different taxonomic groups of microarthropods (Oribatida, Mesostigmata, Collembola). We used two different methods (distance-based Mantel and raw data-based ordination methods) to show that spatial variables could not explain composition or compositional turnover for most microarthropod groups, except Collembola. Dispersal limitation of Collembola is surprising given the high dispersal ability of this group. Although environmental factors explained a large amount of spatial variance in composition (raw data-based ordination method) for all microarthropod groups, environmental similarity (distance-based Mantel method) was a poor predictor of compositional similarity for Oribatida and Mesostigmata. Total abundance and species richness could also be explained by combinations of environmental factors, particularly those relating to tree cover and soil-relevant microhabitat variables (i.e, water content/mass, total soil mass and particle mass), but total abundance and richness were themselves only weakly correlated across space. The most important environmental influences on microarthropod communities were tree cover and water mass, followed by distance-to-sea. At the same time, there was a lot of unexplained variance in the composition of microarthropod communities (especially for species incidences) which could not be explained by the available ecological variables. As richness hotspots were dispersed across different habitats for different taxonomic groups, we suggested that species interactions might be equally important as environmental filtering and spatial autocorrelation in shaping microarthropod community structure, especially for patterns in species incidence.
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Wood, Laura R. "Diversity and distribution of amphibians in Luxembourg." Thesis, University of Kent, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544084.

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Cooper, Fiona Mary Phillips. "Geographic distribution and genetic diversity of black poplar." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246878.

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Gifford, Robert James Moncreiff. "Evolutionary inference from endogenous retrovirus distribution and diversity." Thesis, Imperial College London, 2004. http://hdl.handle.net/10044/1/12030.

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Baker, Paul. "The distribution and diversity of actinomycetes in soil fractions." Thesis, University of Warwick, 1997. http://wrap.warwick.ac.uk/59518/.

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The results presented were concerned with the survival of Streptomyces coelicolor A3(2) (pll673) inoculated into soil microcosms, which were destructively fractionated so that the total propagules and spore counts could be determined in each of the soil fractions. It was found that this microorganism became associated with the smallest soil aggregates at the time of inoculation but with incubation of the soil microcosms the mycelia and spores became attached to the larger soil aggregates. In the sterile soil, the streptomycete growth was much greater than in nonsterile soil, perhaps due to the increased supply of nutrients created by autoclaving the soil, and the lack of competition. Many of the newly formed spores in sterile soil were not attached to the soil aggregates, which may have enabled them to be distributed to new micro sites. When the distribution of indigenous actinomycetes in soil was investigated, it ressembled the distribution of Streptomyces coelicolor in nonsterile soil after the inoculant had been through one life cycle. Actinomycetes were then isolated from each of the soil fractions, as well as the unfractionated soil, and each of these strains were identified to genera, if possible. It was found that many of the micromonosporas and streptosporangia were isolated from the 63-251 μm soil aggregates, probably because this fraction contained low eubacterial and streptomycetes populations caused by the low organic content within this soil fraction. There was a high eubacterial count in the 2-20 μm soil aggregates and although the actinomycetes were outcompeted within this soil fraction, their diversity was greatest within this fraction. This diversity was also reflected by their production of different secondary metabolites. DNA was extracted from each of the isolates and amplified using specifically designed primers for high GC microorganisms. Each of the products were individually run on denaturing gradient gels. It was found that the amplified products from actinomycetes formed bands on the denaturing gels which migrated to 3 positions. Each of these positions corresponded to major groups of actinomycetes of which streptomycetes formed one group. The patterns corresponding to the isolates of each soil fraction would be compared with the amplified products derived from in situ soil DNA extracts. It was found that the results were not comparable but this work is still being investigated.
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Pascall, David John. "The diversity and distribution of multihost viruses in bumblebees." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/31597.

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The bumblebees (genus Bombus) are an ecologically and economically important group in decline. Their decline is driven by many factors, but parasites are believed to play a role. This thesis examines the factors that influence the diversity and distribution of multihost viruses in bumblebees using molecular and modelling techniques. In Chapter 2, I performed viral discovery to isolate new multihost viruses in bumblebees. I investigated factors that explain prevalence differences between different host species using co-phylogenetic models. I found that related hosts are infected with similar viral assemblages, related viruses infect similar host assemblages and related hosts are on average infected with related viruses. Chapter 3 investigated the ecology of four of the novel viruses in greater detail. I applied a multivariate probit regression to investigate the abiotic factors that may drive infection. I found that precipitation may have a positive or negative effect depending on the virus. Also, we observe a strong non-random association between two of the viruses. The novel viruses have considerably more diversity than the previously known viruses. Chapter 4 investigated the effect of pesticides on viral and non-viral infection. I exposed Bombus terrestris colonies to field realistic doses of the neoticotinoid pesticide clothianidin in the laboratory, to the mimic pulsed exposure of crop blooms. I found some evidence for a positive effect of uncertain size on the infection rate of pesticide exposed colonies relative to non-pesticide exposed colonies, a potentially important result. Chapter 5 explored the evolution of avirulent multihost digital organisms across fluctuating fitness landscapes within a discrete sequence space. Consistent with theory, I found that evolution across a fluctuating discrete landscape leads to a faster rate of adaptation, greater diversity and greater specialism or generalism, depending on the correlation between the landscapes. A large range of factors are found to be important in the distribution of infection and diversity of viruses, and we find evidence for abiotic, biotic and anthropogenic factors all playing a role.
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Santos, Maria Eduarda Alves dos. "Diversity and distribution patterns of order Zoantharia (Cnidaria: Anthozoa)." reponame:Repositório Institucional da UFPR, 2015. http://hdl.handle.net/1884/41121.

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Orientadora : Prof. Dr. Marcelo Visentini Kitahara
Orientadora : Prof. Dr. James Davis Reimer
Dissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências da Terra, Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos. Defesa: Pontal do Paraná, 10/12/2015
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Linha de pesquisa: Biologia e ecologia de sistemas oceânicos e costeiros
Resumo: Os padrões de diversidade nos oceanos são foco de teorias ecológicas e evolutivas. Estudos correlacionando dados filogenéticos e da distribuição de organismos permitem corroborar essas teorias que explicam os processos geradores da diversidade marinha. A compreensão desses processos também auxilia prever as consequências de eventos tais como alterações climáticas e bioinvasões Os animais da ordem Zoantharia (Cnidaria: Anthozoa) são encontrados da zona entremarés até profundidades abissais em todos oceanos. Zoantários formam extensas colônias, as quais servem de proteção e alimento para outros organismos. Apesar de serem um grupo de animais abundantes e cosmopolitas, dados sobre a distribuição das espécies ainda são escassos em diversos locais. Por exemplo, até a realização desta dissertação não haviam estudos investigando as espécies de Zoantharia da costa brasileira e sua distribuição nessa província. A falta de investigações sobre a diversidade do grupo é causada principalmente pela dificuldade de identificação das espécies, as quais apresentam uma grande plasticidade morfológica. Para solucionar essa dificuldade, estudos acoplando dados moleculares e taxonômicos mostram ser uma excelente forma de identificar esses animais. Dados moleculares também acresceram no conhecimento sobre a história evolutiva da ordem Zoantharia, um dos grupos que divergiram mais basais em Metazoa. Até o momento não foram estimadas relações filogenéticas do grupo utilizando todos as famílias/genêros com dados disponíveis em bases de dados tais como o GenBank. Em adição, dados moleculares indicam um relacionamento estreito entre espécies de zoantário dos oceanos Atlântico e Pacífico/Índico, entretanto nenhum trabalho investigou quais são são esses pares de espécie e que processos podem ter gerado esse padrão. O objetivo desta dissertação é contribuir na elucidação de padrões evolutivos nos oceanos, utilizando como modelo os zoantários. Nós analisamos as relações filogenéticas da ordem Zoantharia em dois aspectos complementares: 1) grandes clados e 2) espécies geneticamente próximas. Adicionalmente, nós relacionamos esses dados com ecologia e zoogeografia do grupo. No primeiro capítulo, a relação filogenética entre todas as famílias de Zoantharia é analisada em conjunto com as principais características ecológicas de cada clado. O segundo capítulo examina a diversidade e distribuição de zoantários no Atlântico sudeste, preenchendo a lacuna de conhecimento sobre o grupo na costa brasileira. Os resultados desse capítulo são utilizados também na investigação das espécies próximas de zoantários entre as duas bacias oceânicas (Oceano Atlântico e oceanos Pacífico e Índico) no terceiro capítulo.
Abstract: Diversity patterns in the oceans are focus of ecological and evolutionary theories. Studies correlating phylogenetic and distribution data of species allow support these theories which explain the processes generators of marine diversity. Undestand these processes also allow predict the consequences of events such as climate changes and bioinvasons. Animals of the order Zoantharia (Cnidaria: Anthozoa) occur from intertidal to abissal zones in all oceans. Species of the group are able to form extensive colonies that serve as shelter and food resource to other organisms. Althought zoantharian are abundant and cosmopolitan, distribution species data are still scass in several localities. For example, until the present research, there were no studies on Zoantharia species in brazilian coast. The lack of investigation of the group diversity is mostly due to the difficulties in species identification, which present a high interspecific morphological variability. In order to overcome this problem, studies using both morphological and molecular data have proven to be an excellent way to identify species. Molecular data have also provide a better knowledge on the evolution history of the group, however, there is no estimarion of phylogenetic relationships between all the genera with data avaialable in data bases such as GenBank. Moreover, molecular data indicated a close-related relationship between species on Atlantic Ocean and Pacific/Indian oceans, but no study have investigation which are these species. The goal of this dissertation is contribute in the elucidation of evolutionary patterns in the oceans, using as a model the zoantharians. We analyze phylogenetic relationships of the order Zoantharia in two complementary aspects: 1) large clades 2) close-related species. Furthemore, we linked these data with ecology and zoogeograpy of the group. In the first chapter, phylogenetic relationships between all Zoantharia families is analyzed along with their ecological traits. The second chapter examine diversity and distribution of zoantharians in southwest Atlantic, filling the gap of Zoantharia diversity in Brazil. Data of this study is also used in the investifation of close- related species between the two ocean basins (Atlantic Ocean and Pacific/Indian oceans) on the third chapter.
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Smith, Joseph Alexander. "Mammalian Diversity and Distribution in Human-Altered Tropical Landscapes." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/4427.

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Habitat loss at the hands of human enterprise continues to drive the global decline inbiodiversity. While much attention has been placed on the use of protected areas as ameans of conservation, there is an increasing need to understand the capacity ofunprotected, human-altered landscapes to provide refugia and connectivity at largerspatial scales. This study evaluates the mammalian diversity that persists underalternative land management regimes and degrees of landscape change in south-centralSumatra, Indonesia. Species occurrence data compiled from extensive field surveysacross 1600km2 form the basis for analyses of community composition and speciesspecificresponses to the current landscape. Results indicate that species richnessdeclined with increased landscape alteration. The lowest observed species numberswere in areas of industrial scale oil palm production rather than scrub habitats ordegraded forest. Endangered mammals that persisted in the wider matrix were extirpatedfrom the oil palm dominated areas. Comparisons between the ecological traits shared bypersistent versus locally extirpated species revealed that in the initial stages of landscapechange there is the capacity to support large specialist species with slow life histories. Aslandscape degradation continues to an agricultural matrix only habitat and dietgeneralists persisted. Tests of species-specific responses to landscape alteration focussed on the occurrencepatterns of Sumatran tigers (Panthera tigris sumatrae) and four principal prey species. Measures of human prevalence derived from survey data and a novel application ofoccupancy estimation techniques, identified significant negative responses to higherlevels of landscape development. Satellite derived measures of habitat connectivity andlocalised landcover degradation found that connectivity to areas of least disturbed forestwas more important for reclusive species such as tapir (Tapirus indicus) and red muntjac(Muntiacus muntjak), while the occurrence of the wide-ranging tiger was more stronglyinfluenced by local landcover degradation. The capacity of human altered landscapes tocontribute to the conservation of mammalian communities is closely allied to theavailability of degraded forests rather than alternative human altered landcovers. Giventhat these areas of forest are increasingly subject to degradation and conversion, spatialplanning and proactive management are required to safeguard these resources.
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Sanyika, Walter Tendai. "Comparison of actinobacterial diversity in Marion Island terrestrial habitats." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_2619_1263423621.

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Suija, Ave. "Lichens and lichenicolous fungi in estonia: diversity, distribution patterns, taxonomy /." Online version, 2005. http://dspace.utlib.ee/dspace/bitstream/10062/810/5/suija.pdf.

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Books on the topic "Diversity distribution"

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Foissner, W. Protist Diversity and Geographical Distribution. Dordrecht: Springer Netherlands, 2009.

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Foissner, W., and David L. Hawksworth, eds. Protist Diversity and Geographical Distribution. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2801-3.

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Barooah, C. Diversity and distribution of Bamboos in Assam. Dehra Dun: Bishen Singh Mahendra Pal Singh, 2003.

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Kōbe Daigaku. Keizai Keiei Kenkyūjo, Kōbe Daigaku. Kokusai Kyōryoku Kenkyūka, and Workshop "Economics of Diversity, Issues and Prospects" (2008 : Kobe, Japan), eds. Economics of diversity: Issues and prospects. Kobe, Japan: Research Institute for Economics and Business Administration, Kobe University, 2010.

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Liverworts of the Mediterranean: Ecology, diversity and distribution. Berlin: J. Cramer, 2004.

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K, Tiwari S. Zoogeography of Indian amphibians: Distribution, diversity, and spatial relationship. New Delhi: Today & Tomorrow's Printers & Publishers, 1991.

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Gururaja, K. V. Anuran diversity and distribution in Dandeli Anshi Tiger Reserve. Bangalore: Energy & Wetlands Research Group, Centre for Ecological Sciences, Indian Institute of Science, 2012.

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D, McIntyre A., ed. Life in the world's oceans: Diversity, distribution, and abundance. Ames, Iowa: Blackwell Pub., 2010.

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Samant, S. S. Medicinal plants of Indian Himalaya: Diversity, distribution, potential values. Nainital: Gyanodaya Prakashan, 1998.

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Baker, Paul. The distribution and diversity of actinomycetes in soil fractions. [s.l.]: typescript, 1997.

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Book chapters on the topic "Diversity distribution"

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Taylor, F. J. R., Mona Hoppenrath, and Juan F. Saldarriaga. "Dinoflagellate diversity and distribution." In Protist Diversity and Geographical Distribution, 173–84. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-90-481-2801-3_13.

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Banister, Judith. "Ethnic Diversity and Distribution." In The Population of Modern China, 553–72. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-1231-2_23.

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Wellband, Kyle, Shauna M. Baillie, Paul Bentzen, and Louis Bernatchez. "Genetic Diversity." In The Lake Charr Salvelinus namaycush: Biology, Ecology, Distribution, and Management, 119–65. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62259-6_5.

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Chavarie, Louise, Colin E. Adams, Heidi K. Swanson, Mark S. Ridgway, William M. Tonn, and Christopher C. Wilson. "Ecological Diversity." In The Lake Charr Salvelinus namaycush: Biology, Ecology, Distribution, and Management, 69–117. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62259-6_4.

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Alagesan, Periasamy. "Millipedes: Diversity, Distribution and Ecology." In Arthropod Diversity and Conservation in the Tropics and Sub-tropics, 119–37. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1518-2_7.

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Vankhede, Ganesh, Priyanka Hadole, and Akshay Kumar Chakravarthy. "Spiders: Diversity, Distribution, and Conservation." In Arthropod Diversity and Conservation in the Tropics and Sub-tropics, 139–64. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1518-2_8.

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Pérez, Carlos Daniel, Bárbara de Moura Neves, Ralf Tarciso Cordeiro, Gary C. Williams, and Stephen D. Cairns. "Diversity and Distribution of Octocorallia." In The Cnidaria, Past, Present and Future, 109–23. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31305-4_8.

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Gomes, Paula Braga, Alessandra Gomes Targino, Rafael Antônio Brandão, and Carlos Daniel Pérez. "Diversity and Distribution of Actiniaria." In The Cnidaria, Past, Present and Future, 125–38. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31305-4_9.

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Baldi, Ricardo, Germán Cheli, Daniel E. Udrizar Sauthier, Alejandro Gatto, Gustavo E. Pazos, and Luciano Javier Avila. "Animal Diversity, Distribution and Conservation." In Late Cenozoic of Península Valdés, Patagonia, Argentina, 263–303. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-48508-9_11.

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Antúnez-de-Mayolo, Adriana, Gabriela Antúnez-de-Mayolo, Emmanuel Thomas, Erika P. Reategui, Michael D. Brown, and Rene J. Herrera. "Worldwide Distribution of a PolymorphicAluInsertion in the Progesterone Receptor Gene." In Genomic Diversity, 213–22. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4263-6_15.

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Conference papers on the topic "Diversity distribution"

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Ferrara, Matthew, Michael Kupferschmid, and Gregory Coxson. "The peak sidelobe distribution for binary codes." In 2007 International Waveform Diversity and Design Conference. IEEE, 2007. http://dx.doi.org/10.1109/wddc.2007.4339397.

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Goodman, Steve. "Madagascar: Historical biogeography, diversity, and patterns of distribution." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.94062.

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Qudaih, Yaser Soliman, and T. Hiyama. "Wealth in DG diversity for power distribution system operation improvement." In 2009 Transmission & Distribution Conference & Exposition: Asia and Pacific. IEEE, 2009. http://dx.doi.org/10.1109/td-asia.2009.5356998.

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Gyongyosi, Laszlo. "Diversity extraction for multicarrier Continuous-Variable Quantum Key Distribution." In 2016 24th European Signal Processing Conference (EUSIPCO). IEEE, 2016. http://dx.doi.org/10.1109/eusipco.2016.7760294.

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Scheepers, Christiaan, and Andries P. Engelbrecht. "Misleading Pareto optimal front diversity metrics: Spacing and distribution." In 2016 IEEE Symposium Series on Computational Intelligence (SSCI). IEEE, 2016. http://dx.doi.org/10.1109/ssci.2016.7850218.

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Lusina, Paul, Robert Schober, and Lutz Lampe. "Power and Weight Distribution Design Criteria for Cooperative Diversity Channels." In 2007 IEEE Wireless Communications and Networking Conference. IEEE, 2007. http://dx.doi.org/10.1109/wcnc.2007.154.

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Rolland, Jonathan, Daniele Silvestro, Dolph Schluter, Antoine Guisan, Olivier Broennimann, and Nicolas Salamin. "ENDOTHERMY, THERMAL NICHE EVOLUTION AND THE DISTRIBUTION OF VERTEBRATE DIVERSITY." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-300075.

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Sulimov, Amir I., and Arkadiy V. Karpov. "Analysis of Polarization Diversity Applicability in Meteor Key Distribution Systems." In 2021 International Siberian Conference on Control and Communications (SIBCON). IEEE, 2021. http://dx.doi.org/10.1109/sibcon50419.2021.9438896.

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Barebo, Ashley, and Alan D. Gishlick. "DIVERSITY AND DISTRIBUTION PATTERNS IN SOME TRILOBITES MIMIC DYNASTINE BEETLES." In Northeastern Section-56th Annual Meeting-2021. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021ne-361830.

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Kawamura, Eri, Sei-ichiro Watanabe, Tomonori Usuda, Motohide Tamura, and Miki Ishii. "Size Distribution of Dust grains in Vortices in a Protoplanetary Disk." In EXOPLANETS AND DISKS: THEIR FORMATION AND DIVERSITY: Proceedings of the International Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3215818.

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Reports on the topic "Diversity distribution"

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Yurkonis, Kathryn Anne, Brian J. Wilsey, and Kirk A. Moloney. The Effect of Plant Distribution on Diversity and Exotic Species Invasion in Prairie Restoration. Ames: Iowa State University, Digital Repository, 2009. http://dx.doi.org/10.31274/farmprogressreports-180814-473.

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Balice, R. G., N. Jarmie, and F. J. Rogers. Distribution and diversity of fungal species in and adjacent to the Los Alamos National Laboratory. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/564129.

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Chapman, A. S., and V. E. Kostylev. Distribution, abundance and diversity of benthic species from the Beaufort Sea and western Amundsen Gulf - a summary of data collected between 1951 and 2000. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2008. http://dx.doi.org/10.4095/225396.

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Winter, H. V., and M. de Graaf. Diversity, abundance, distribution and habitat use of reef-associated sharks in the Dutch Caribbean : Field studies using Baited Remote Underwater Video (BRUV) and acoustic telemetry ; as part of the DCNA ‘Save Our Sharks’ project (Nationale Postcode Loterij). IJmuiden: Wageningen Marine Research, 2019. http://dx.doi.org/10.18174/466593.

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Robledo, Ana, and Amber Gove. What Works in Early Reading Materials. RTI Press, February 2019. http://dx.doi.org/10.3768/rtipress.2018.op.0058.1902.

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Access to books is key to learning to read and sustaining a love of reading. Yet many low- and middle-income countries struggle to provide their students with reading materials of sufficient quality and quantity. Since 2008, RTI International has provided technical assistance in early reading assessment and instruction to ministries of education in dozens of low- and middle-income countries. The central objective of many of these programs has been to improve learning outcomes—in particular, reading—for students in the early grades of primary school. Under these programs, RTI has partnered with ministry staff to produce and distribute evidence-based instructional materials at a regional or national scale, in quantities that increase the likelihood that children will have ample opportunities to practice reading skills, and at a cost that can be sustained in the long term by the education system. In this paper, we seek to capture the practices RTI has developed and refined over the last decade, particularly in response to the challenges inherent in contexts with high linguistic diversity and low operational capacity for producing and distributing instructional materials. These practices constitute our approach to developing and producing instructional materials for early grade literacy. We also touch upon effective planning for printing and distribution procurement, but we do not consider the printing and distribution processes in depth in this paper. We expect this volume will be useful for donors, policymakers, and practitioners interested in improving access to cost-effective, high-quality teaching and learning materials for the early grades.
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Latané, Annah, Jean-Michel Voisard, and Alice Olive Brower. Senegal Farmer Networks Respond to COVID-19. RTI Press, June 2021. http://dx.doi.org/10.3768/rtipress.2021.rr.0045.2106.

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This study leveraged existing data infrastructure and relationships from the Feed the Future Senegal Naatal Mbay (“flourishing agriculture”) project, funded by the US Agency for International Development (USAID) and implemented by RTI International from 2015 to 2019. The research informed and empowered farmer organizations to track and respond to rural households in 2020 as they faced the COVID-19 pandemic. Farmer organizations, with support from RTI and local ICT firm STATINFO, administered a survey to a sample of 800 agricultural households that are members of four former Naatal Mbay–supported farmer organizations in two rounds in August and October 2020. Focus group discussions were conducted with network leadership pre- and post–data collection to contextualize the experience of the COVID-19 shock and to validate findings. The results showed that farmers were already reacting to the effects of low rainfall during the 2019 growing season and that COVID-19 compounded the shock through disrupted communications and interregional travel bans, creating food shortages and pressure to divert seed stocks for food. Food insecurity effects, measured through the Household Food Insecurity Access Scale and cereals stocks, were found to be greater for households in the Casamance region than in the Kaolack and Kaffrine regions. The findings also indicate that farmer networks deployed a coordinated response comprising food aid and access to personal protective equipment, distribution of short-cycle legumes and grains (e.g., cowpea, maize) and vegetable seeds, protection measures for cereals seeds, and financial innovations with banks. However, food stocks were expected to recover as harvesting began in October 2020, and the networks were planning to accelerate seed multiplication, diversify crops beyond cereals, improve communication across the network. and mainstream access to financial instruments in the 2021 growing season. The research indicated that the previous USAID-funded project had likely contributed to the networks’ COVID-19 resilience capacities by building social capital and fostering the new use of tools and technologies over the years it operated.
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Evans, Julie, Kendra Sikes, and Jamie Ratchford. Vegetation classification at Lake Mead National Recreation Area, Mojave National Preserve, Castle Mountains National Monument, and Death Valley National Park: Final report (Revised with Cost Estimate). National Park Service, October 2020. http://dx.doi.org/10.36967/nrr-2279201.

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Vegetation inventory and mapping is a process to document the composition, distribution and abundance of vegetation types across the landscape. The National Park Service’s (NPS) Inventory and Monitoring (I&M) program has determined vegetation inventory and mapping to be an important resource for parks; it is one of 12 baseline inventories of natural resources to be completed for all 270 national parks within the NPS I&M program. The Mojave Desert Network Inventory & Monitoring (MOJN I&M) began its process of vegetation inventory in 2009 for four park units as follows: Lake Mead National Recreation Area (LAKE), Mojave National Preserve (MOJA), Castle Mountains National Monument (CAMO), and Death Valley National Park (DEVA). Mapping is a multi-step and multi-year process involving skills and interactions of several parties, including NPS, with a field ecology team, a classification team, and a mapping team. This process allows for compiling existing vegetation data, collecting new data to fill in gaps, and analyzing the data to develop a classification that then informs the mapping. The final products of this process include a vegetation classification, ecological descriptions and field keys of the vegetation types, and geospatial vegetation maps based on the classification. In this report, we present the narrative and results of the sampling and classification effort. In three other associated reports (Evens et al. 2020a, 2020b, 2020c) are the ecological descriptions and field keys. The resulting products of the vegetation mapping efforts are, or will be, presented in separate reports: mapping at LAKE was completed in 2016, mapping at MOJA and CAMO will be completed in 2020, and mapping at DEVA will occur in 2021. The California Native Plant Society (CNPS) and NatureServe, the classification team, have completed the vegetation classification for these four park units, with field keys and descriptions of the vegetation types developed at the alliance level per the U.S. National Vegetation Classification (USNVC). We have compiled approximately 9,000 existing and new vegetation data records into digital databases in Microsoft Access. The resulting classification and descriptions include approximately 105 alliances and landform types, and over 240 associations. CNPS also has assisted the mapping teams during map reconnaissance visits, follow-up on interpreting vegetation patterns, and general support for the geospatial vegetation maps being produced. A variety of alliances and associations occur in the four park units. Per park, the classification represents approximately 50 alliances at LAKE, 65 at MOJA and CAMO, and 85 at DEVA. Several riparian alliances or associations that are somewhat rare (ranked globally as G3) include shrublands of Pluchea sericea, meadow associations with Distichlis spicata and Juncus cooperi, and woodland associations of Salix laevigata and Prosopis pubescens along playas, streams, and springs. Other rare to somewhat rare types (G2 to G3) include shrubland stands with Eriogonum heermannii, Buddleja utahensis, Mortonia utahensis, and Salvia funerea on rocky calcareous slopes that occur sporadically in LAKE to MOJA and DEVA. Types that are globally rare (G1) include the associations of Swallenia alexandrae on sand dunes and Hecastocleis shockleyi on rocky calcareous slopes in DEVA. Two USNVC vegetation groups hold the highest number of alliances: 1) Warm Semi-Desert Shrub & Herb Dry Wash & Colluvial Slope Group (G541) has nine alliances, and 2) Mojave Mid-Elevation Mixed Desert Scrub Group (G296) has thirteen alliances. These two groups contribute significantly to the diversity of vegetation along alluvial washes and mid-elevation transition zones.
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