Relevant bibliographies by topics / Rare taxa

Contents

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

Academic literature on the topic 'Rare taxa'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Rare taxa"

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Kerrigan, Richard W., Philippe Callac, and Luis A. Parra. "New and rare taxa inAgaricussectionBivelares(Duploannulati)." Mycologia 100, no. 6 (2008): 876–92. http://dx.doi.org/10.3852/08-019.

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Neuwirth, G. "Rare lichen taxa from Costa Rica." Mycosphere 5, no. 6 (2014): 711–18. http://dx.doi.org/10.5943/mycosphere/5/6/2.

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Liu, Mengjun, Yue Ren, and Weihong Zhang. "Rare Bacteria Can Be Used as Ecological Indicators of Grassland Degradation." Microorganisms 11, no. 3 (2023): 754. http://dx.doi.org/10.3390/microorganisms11030754.

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Grassland degradation is a major ecological problem at present, leading to changes in the grassland environment and the soil microbial community. Here, based on full-length 16S rRNA gene sequencing, we highlight the importance of small-scale environmental changes on the Qinghai-Tibet Plateau grassland for the composition and assembly processes of abundant and rare bacterial taxa. The results showed that grassland vegetation coverage affected the taxonomic and phylogenetic composition of rare bacterial taxa more than abundant bacterial taxa. The taxonomic composition and phylogenetic compositio
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Tian, Lixin, Yuchuan Zhang, Liyuan Zhang, Lei Zhang, Xiaoli Gao, and Baili Feng. "Biogeographic Pattern and Network of Rhizosphere Fungal and Bacterial Communities in Panicum miliaceum Fields: Roles of Abundant and Rare Taxa." Microorganisms 11, no. 1 (2023): 134. http://dx.doi.org/10.3390/microorganisms11010134.

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Unraveling how microbial interactions and assembly process regulate the rhizosphere abundant and rare taxa is crucial for determining how species diversity affects rhizosphere microbiological functions. We assessed the rare and abundant taxa of rhizosphere fungal and bacterial communities in proso millet agroecosystems to explore their biogeographic patterns and co-occurrence patterns based on a regional scale. The taxonomic composition was significantly distinct between the fungal and bacterial abundant and rare taxa. Additionally, the rare taxa of bacteria and fungi exhibited higher diversit
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A Afi, Abderrahman, Ahmed Achhal El Kadmiri, Abdelmalek Benabid, and Mohamed Rochdi. "Richesse et diversité floristique de la suberaie de la Mamora (Maroc)." Acta Botanica Malacitana 30 (December 1, 2005): 127–38. http://dx.doi.org/10.24310/abm.v30i0.7187.

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RÉSUMÉ. Richesse et diversité floristique de la suberaie de la Mamora (Maroc). L’étude vise la quantification de la richesse et de la diversité floristique de l’écosystème à chêne - liège de la forêt de la Mamora sur la base de transects et relevés floristiques répartis selon un échantillonnage stratifié et systématique dans différentes formations végétales préalablement distinguées. Les résultats montrent que l’écosystème renferme 62 familles, 261 genres, 408 espèces, sous-espèces et variétés. 35 taxons sont très rares et 29 rares. 18 taxons sont endémiques, 1 très rare et endémique et 4 rare
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Jiao, Congcong, Dayong Zhao, Rui Huang, et al. "Abundant and Rare Bacterioplankton in Freshwater Lakes Subjected to Different Levels of Tourism Disturbances." Water 10, no. 8 (2018): 1075. http://dx.doi.org/10.3390/w10081075.

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Anthropogenic disturbances have a negative impact on lake ecosystems, such as water environmental degradation. Bacterioplankton communities are essential components in lakes and consist of a few abundant species and several rare taxa. However, little is known about the community diversity and composition of abundant and rare bacterioplankton subjected to different levels of anthropogenic disturbances. In this study, water samples were collected from twelve freshwater lakes located around the city of Nanjing, China. Both Illumina MiSeq sequencing and multivariate statistical analysis were emplo
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Wang, Ting, Yu Duan, Xiaogang Lei, et al. "Tea Plantation Intercropping Legume Improves Soil Ecosystem Multifunctionality and Tea Quality by Regulating Rare Bacterial Taxa." Agronomy 13, no. 4 (2023): 1110. http://dx.doi.org/10.3390/agronomy13041110.

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Microorganisms play essential roles in soil-ecosystem multifunctionality. However, the contribution of their community assembly processes, composition, diversity, and keystone species to ecosystem multifunctionality is unclear, especially in tea-plantation ecosystems. In order to assess the effects of various intercropping patterns (tea-plant monoculture and tea plants, respectively, intercropped with soybean, soybean—milk vetch, soybean—red clover, and soybean—smooth vetch) on soil rare and abundant taxa, a field experiment was carried out. We found that tea plantation intercropping with legu
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Yu, Zhengda, Hui Wang, Jiao Meng, et al. "Quantifying the responses of biological indices to rare macroinvertebrate taxa exclusion: Does excluding more rare taxa cause more error?" Ecology and Evolution 7, no. 5 (2017): 1583–91. http://dx.doi.org/10.1002/ece3.2798.

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Yang, Qingmiao, Hanwen Liu, Biao Tang, et al. "Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types." Microorganisms 13, no. 3 (2025): 513. https://doi.org/10.3390/microorganisms13030513.

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Soil microorganisms are crucial for nutrient cycling, with abundant and rare taxa playing distinct roles. However, the mechanisms by which soil microbes influence nutrient cycling under different crop types remain unclear. In this study, we investigated the network structure, diversity, and microbial composition of croplands in the Yellow River Delta, focusing on four primary crops: soybean, maize, cotton, and sorghum. The findings revealed that the co-occurring network structure of sorghum planting-soils exhibited greater complexity than other crop types. Bacterial alpha diversity in cotton-p
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Mumin, Reyila, Dan-Dan Wang, Wen Zhao, et al. "Spatial Distribution Patterns and Assembly Processes of Abundant and Rare Fungal Communities in Pinus sylvestris var. mongolica Forests." Microorganisms 12, no. 5 (2024): 977. http://dx.doi.org/10.3390/microorganisms12050977.

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Revealing the biogeography and community assembly mechanisms of soil microorganisms is crucial in comprehending the diversity and maintenance of Pinus sylvestris var. mongolica forests. Here, we used high-throughput sequencing techniques and null model analysis to explore the distribution patterns and assembly processes of abundant, rare, and total fungal communities in P. sylvestris var. mongolica forests based on a large-scale soil survey across northern China. Compared to the abundant and total taxa, the diversity and composition of rare taxa were found to be more strongly influenced by reg
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Dissertations / Theses on the topic "Rare taxa"

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Herringshaw, Liam George. "Rare and problematic taxa from the Much Wenlock Limestone Formation." Thesis, University of Birmingham, 2004. http://etheses.bham.ac.uk//id/eprint/81/.

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The Much Wenlock Limestone Formation (Silurian: Wenlock, Homerian) of England and Wales contains a diverse invertebrate fauna including many rare and problematical taxa. This study investigates the palaeobiology and palaeoecology of five such groups: asteroids (starfish), the crinoid Calyptocymba mariae gen. et sp. nov., rostroconch molluscs, machaeridians and cornulitids. Six species of asteroids are recognized, including three new forms (Palasterina orchilocalia sp. nov., Hudsonaster? carectum sp. nov., and Doliaster brachyactis gen. et sp. nov.), that show a diverse range of morphologies. M
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Gillett, Nadezhda Dimitrova. "Diatom-Based Stream Bioassessment: the Roles of Rare Taxa and Live/Dead Ratio." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/26.

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It is unclear whether accounting for the number of rare taxa or differentiating live (cells with visible chloroplasts) and dead (empty cells) diatoms would enhance the accuracy and precision of diatom-based stream bioassessment. My dissertation research examines whether the number of rare taxa and percentage (%) live diatoms can be used as indicators of human disturbance in streams/rivers. To address my objectives, I analyzed two datasets collected at different spatial scales. The large scale dataset was collected over the course of five years and included more than 1300 sites and over 200 env
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Oetting, Liliana Lotufo. ""Avaliação de diferentes marcadores para a determinação da digestibilidade e taxa de passagem do alimento em suínos"." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/64/64132/tde-12072002-100432/.

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O objetivo do trabalho foi (1) avaliar a utilização do óxido crômico, lantânio e itérbio como marcadores dietéticos para a determinação da digestibilidade, (2) determinar a taxa de passagem através desses três marcadores, e (3) comparar duas técnicas analíticas (ICP-OES e ED-XRF) na análise dos marcadores. No ensaio de digestibilidade foram utilizadas 12 fêmeas suínas com idade inicial e final de 133 e 153 dias, respectivamente, sendo que os sete tratamentos envolvidos representam a combinação das duas técnicas analíticas (ICP-OES e ED-XRF) com os três marcadores utilizados na coleta pa
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Brown, Susan Ann. "Genetic variation within and between some rare and common taxa of Cape Proteaceae and the implications for their conservation." Thesis, Rhodes University, 2000. http://hdl.handle.net/10962/d1003964.

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Rossi, Pedro Linhares 1981. "A piramide e a esfinge : estudo sobre a hierarquia das divisas, a integração financeira de paises perifericos e a volatilidade de cambio e juros." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/285806.

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Orientador: Ricardo de Medeiros Carneiros<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Economia<br>Made available in DSpace on 2018-08-12T10:13:28Z (GMT). No. of bitstreams: 1 Rossi_PedroLinhares_M.pdf: 744494 bytes, checksum: 3e1b02afff3aef44716b4906e5f61013 (MD5) Previous issue date: 2008<br>Resumo: Essa dissertação é constituída de um ensaio teórico e um estudo empírico tendo como tema os efeitos da inserção financeira internacional sobre a volatilidade de variáveis macroeconômicas como as taxas de câmbio e juros nos países periféricos. No plano teórico, des
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Lourinho, Ana Maria Rêgo. "Descida da taxa de IRC e o efeito na competitividade." Master's thesis, Instituto Superior de Economia e Gestão, 2015. http://hdl.handle.net/10400.5/13074.

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Mestrado em Ciências Empresariais<br>O presente trabalho analisa o efeito da descida das taxas estatutárias de sociedades no crescimento económico, desemprego e investimento, nos 28 países da UE. Desta forma, procura-se analisar se existe alguma correlação entre a decisão de subida/descida da taxa de IRC e a variação destes indicadores económicos. Os principais objetivos consistiram em analisar o efeito da variação das taxa estatutária e taxa efetiva de IRC nos países UE no período de 1990 a 2013, e compreender o efeito dessa variação e suas principais tendências no período em análise, nas va
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Moura, Silvio. "A relação entre taxa de câmbio, investimento direto estrangeiro e taxa de juros." Pontifícia Universidade Católica de São Paulo, 2015. https://tede2.pucsp.br/handle/handle/9444.

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Made available in DSpace on 2016-04-26T20:52:38Z (GMT). No. of bitstreams: 1 Silvio Moura.pdf: 3104342 bytes, checksum: b7f112704d9906e75b491f46318f1c32 (MD5) Previous issue date: 2015-03-12<br>The exchange rate is a major key due to its myriad consequences it waves on the economy such as: effect on monetary policy, effects on economic growth, effects on the trade balance, among many others. Using a time series sample from January / December 2000/2013 and the variables exchange rate, interest rates and foreign direct investment, econometric tests were modeled trying to build relationships us
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Afonso, Ana Catarina Duarte. "Determinantes do corporate tax avoidance e da utilização de tax havens." Master's thesis, Instituto Superior de Economia e Gestão, 2017. http://hdl.handle.net/10400.5/14487.

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Mestrado em Contabilidade, Fiscalidade e Finanças Empresariais<br>Este trabalho de investigação tem como objetivo analisar os determinantes do corporate tax avoidance e da utilização de tax havens, isto é, em que medida certas características da empresa poderão afetar a sua prática de tax avoidance e influenciar a sua escolha na utilização de subsidiárias localizadas em tax havens. Para uma amostra de 321 empresas Europeias constatou-se que a dimensão da empresa, a sua rentabilidade e o grau de utilização de tax havens, determinam de forma positiva o nível de tax avoidance, enquanto que o fact
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Harfuch, Leila. "Determinantes da taxa de juros nominal e sua relação com a taxa de câmbio no Brasil no período de 1990 a 2006." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11132/tde-20082008-112323/.

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Nas duas últimas décadas, o Brasil vem praticando elevadas taxas de juros nominais em relação à taxa de inflação existente. Isso encarece o crédito, aumenta o endividamento e prejudica o crescimento econômico sustentado. Além disso, fatores como a implementação de políticas econômicas de combate à inflação, a aceleração do processo de abertura e internacionalização econômicas criam um mix variáveis que se relacionam com a taxa de juros e deixam explícita a necessidade de se analisar os principais determinantes da taxa de juros nominal no Brasil e sua relação com a taxa de câmbio, objetos de es
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Rocha, Lizandra Salau da. "ANÁLISE DA TAXA DE JUROS E TAXA DE CÂMBIO BRASILEIRA POR MEIO DE MODELOS DE PREVISÃO." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/8288.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>The analysis of macro-economic variables through time-series models is widely used in the literature supporting economic theory, showing the actual behaviour of these variables. One of these macroeconomic variables have two variables that interfere with eou has relationships with other variables justifying the relevance in studying their behaviors. The first is the interest rate, which is very important in driving the economy, influencing the intention to spend and save of all economic agents, whether personal, commercial or indu
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Books on the topic "Rare taxa"

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Rutherford, Connie. Recovery plan for insect and plant taxa from the Santa Cruz Mountains in California. U.S. Fish and Wildlife Service, Region 1, 1998.

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Rutherford, Connie. Recovery plan for insect and plant taxa from the Santa Cruz Mountains in California. U.S. Fish and Wildlife Service, Region 1, 1998.

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Rutherford, Connie. Recovery plan for insect and plant taxa from the Santa Cruz Mountains in California. U.S. Fish and Wildlife Service, Region 1, 1998.

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Johnson, Joe. Vascular flora of three regions comprising Bruce and Grey Counties, Ontario with emphasis on rare native taxa. Ontario Ministry of Natural Resources, Owen Sound Area Office, 1995.

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Alexandre de Medeiros e Albuquerque Barcinski. Risco de taxa de juros e a dívida pública federal no Brasil pós-real. BNDES, 1999.

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Patriquin, Larry. Inventing tax rage: Misinformation in the National post. Fernwood Pub., 2004.

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Kinsey, Karyl A. Standing scrutiny: Intersection of race and class in tax audits. American Bar Foundation, 1994.

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Phillips, Martha H. Implications of tax alternatives for families: How ten families fare under five tax proposals. Women's Research and Education Institute, 1985.

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Ivanova, Anna. The Russian flat tax reform. International Monetary Fund, Fiscal Affairs Dept., 2005.

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Mitchell, Daniel. The flat tax: Freedom, fairness, jobs, and growth. Regnery Pub., 1996.

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Book chapters on the topic "Rare taxa"

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Tan, K., and G. Iatrou. "Two Rare Taxa in the Southern Peloponnese." In Progress in Botanical Research. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5274-7_35.

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Guan, Jianfei. "Role of Rare Taxa in the Structure and Function of Soil Fungal Community." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-5716-3_20.

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Stévart, Tariq, Gilles Dauby, Davy U. Ikabanga, et al. "Diversity of the Vascular Plants of the Gulf of Guinea Oceanic Islands." In Biodiversity of the Gulf of Guinea Oceanic Islands. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06153-0_10.

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AbstractDespite a long history of botanical collecting in the three oceanic islands of the Gulf of Guinea, no recent studies have documented floristic patterns. This chapter summarizes information on the vascular plants of the islands, including inventories conducted on Príncipe and São Tomé since 2017, as well as two recent expeditions to Annobón. An updated database of the vascular flora was compiled, which includes 14,376 records representing 1285 species and infraspecific taxa (1028 native). Príncipe has 445 species and infraspecific taxa (394 native), São Tomé has 1044 (842 native), and A
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Melo, Martim, Luis M. P. Ceríaco, and Rayna C. Bell. "Biogeography and Evolution in the Oceanic Islands of the Gulf of Guinea." In Biodiversity of the Gulf of Guinea Oceanic Islands. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06153-0_6.

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AbstractAs with most archipelagos, geography played a central role in the assembly and evolution of the endemic-rich biological communities of the Gulf of Guinea oceanic islands. The islands are located at moderate distances from the species-rich African continent that surrounds them to the east and north. This proximity facilitated colonization by many branches of the tree of life, but gene flow between the islands and continent was low enough that many lineages evolved in isolation once they reached the archipelago, resulting in many endemic species. Furthermore, several of the island taxa b
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Garnas, Jeff R., Matthew P. Ayres, and Maria J. Lombardero. "Forest Insect Population Dynamics." In Forest Entomology and Pathology. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-11553-0_5.

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AbstractMost insect species are rare most of the time, but populations of certain taxa exhibit dramatic fluctuations in abundance across years. These fluctuations range from highly regular, cyclical dynamics to mathematical chaos. Peaks in abundance, or “population outbreaks” are notable both for the damage they can cause in natural and planted forests and for the rich body of research and theory they have inspired focused on elucidating drivers of population fluctuations across time and space. This chapter explores some of the key mechanisms that explain the population dynamics of outbreaking
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Ramanathan, Subramaniam, Nirmalya Deo Pradhan, and Girish Chinnaswamy. "Rare Pediatric Tumors." In Tata Memorial Centre Textbook of Oncology. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-3378-5_66.

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Carlberg, Michael. "Fixed Tax Rate." In Contributions to Economics. Physica-Verlag HD, 1995. http://dx.doi.org/10.1007/978-3-642-46965-7_12.

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Carlberg, Michael. "Fixed Tax Rate." In Contributions to Economics. Physica-Verlag HD, 1995. http://dx.doi.org/10.1007/978-3-642-46965-7_4.

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Carlberg, Michael. "Fixed Tax Rate." In Contributions to Economics. Physica-Verlag HD, 1995. http://dx.doi.org/10.1007/978-3-642-46965-7_8.

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Haufler, Andreas. "Tax Rate Harmonization." In Commodity Tax Harmonization in the European Community. Physica-Verlag HD, 1993. http://dx.doi.org/10.1007/978-3-642-58071-0_8.

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Conference papers on the topic "Rare taxa"

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Sohrab, Fahad, and Jenni Raitoharju. "Boosting Rare Benthic Macroinvertebrates Taxa Identification With One-Class Classification." In 2020 IEEE Symposium Series on Computational Intelligence (SSCI). IEEE, 2020. http://dx.doi.org/10.1109/ssci47803.2020.9308359.

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Izverscaia, Tatiana, and Veaceslav Ghendov. "Rare asperula L. (Rubiaceae) species in the spontaneous flora of Republic of Moldova." In Conferința științifică națională cu participare internațională "Integrare prin cercetare și inovare", dedicată Zilei Internaționale a Științei pentru Pace și Dezvoltare. Moldova State University, 2025. https://doi.org/10.59295/spd2024n.15.

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The article presents new data on distribution in the spontaneous flora of the Republic of Moldova and the study results on Asperula species: Asperula rumelica Boiss. and Asperula tenella Heuff. ex Degen. - two rare species (Rubiaceae Juss. family) proposed for inclusion in the national Ecological legislation and to the Red Book of the Republic of Moldova, 4th edition. The following data for these taxa are indicated: Latin, Romanian and Russian names, synonymy, category and criteria of rarity, local distribution, habitat, limiting factors, biological and ecological characteristics, status and c
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Karaman, Gordan S. "Endemic rare species of family Niphargidae from Serbia, Niphargus smederevanus S. Karaman, 1950 (Contribution to the Knowledge of the Amphipoda 341)." In 7th International Scientific Conference Modern Trends in Agricultural Production, Rural Development and Environmental Protection. The Balkans Scientific Center of the Russian Academy of Natural Sciences, 2025. https://doi.org/10.46793/7thmtagricult.01k.

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The subterranean member of the family Niphargidae G. Karaman, 1962, Niphargus smederevanus S. Karaman, 1950a is redescribed and figured based on males and females from type locality, fountain-spring near Smederevo, Serbia, and its taxonomical relation to the other similar taxa of genus Niphargus Schiődte, 1849 is discussed.
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Levkovskaya, G. M., N. V. Shamal, V. F. Tarasevich, A. N. Bogolyubova, and A. K. Kasparov. "SEM-CHARACTERISTICS OF THE “CEMETERIES” OF TERATOMORPHIC POLLEN GRAINS FORMED UNDER HIGH RADIATION CONTAMINATION IN THE CHERNOBYL 30-KM EXCLUSION ZONE." In X Международная конференция молодых ученых: биоинформатиков, биотехнологов, биофизиков, вирусологов и молекулярных биологов — 2023. Novosibirsk State University, 2023. http://dx.doi.org/10.25205/978-5-4437-1526-1-192.

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SEM-micrographs of palynoteratical pollen complexes were obtained from the soil samples collected at points with high 239/240Pu, 241Am, 90Sr and 137Cs contamination located 12, 16 and 22 km from the Chernobyl NPP in 1988. The complexes resemble “cemeteries” of monstrous, underdeveloped and sterile pollen of all taxa simultaneously, while in the pollen complexes of Pleistocene extremes monstrous pollen are rare.
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Ghendov, Veaceslav, and Tatiana Izverscaia. "Allium fuscum waldst. et kit. and A. sphaeropodum klokov (alliaceae) - rare species proposed for protection in the Republic of Moldova." In Conferința științifică națională cu participare internațională "Integrare prin cercetare și inovare", dedicată Zilei Internaționale a Științei pentru Pace și Dezvoltare. Moldova State University, 2025. https://doi.org/10.59295/spd2024n.10.

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The article presents data on distribution of two rare species of vascular plants - Allium fuscum Waldst. et Kit. and Allium sphaeropodum Klokov (Alliaceae Juss. family) in the spontaneous flora, proposed for protection and inclusion in the Red Book of the Republic of Moldova, 4th edition. The following data for these taxa are indicated: Latin, Romanian and Russian names, synonymy, category and criteria of rarity, general and local distribution, habitat, limiting factors, biological and ecological characteristics, aspects of cultivation and use, status and conservation measures protection in th
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Goryacheva, Anna A. "Preliminary data on dinocysts of the upper toarcian – lower aalenian of Northeastern Siberia." In Недропользование. Горное дело. Направления и технологии поиска, разведки и разработки месторождений полезных ископаемых. Экономика. Геоэкология. Федеральное государственное бюджетное учреждение науки Институт нефтегазовой геологии и геофизики им. А.А. Трофимука Сибирского отделения Российской академии наук, 2020. http://dx.doi.org/10.18303/b978-5-4262-0102-6-2020-006.

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The article presents preliminary results of palynological studies of the Lower-Middle Jurassic deposits, uncovered by the natural exposure of 7A on the Kelimyar river and represented by the Kelimyar Formation. The Toarian biostraton with Valvaeodinium aquilonium is identified in the section. As a result of studies in the Lower Aalenian samples, only rare dinocysts taxa were identified that did not allow to divide the upper part of the section on this group of unicellular algae.
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Tofan-Dorofeev, Elena, and Olga Ioniţă. "Ex-situ conservation of pontechium maculatum (Boraginaceae) in the national botanical garden." In Scientific International Symposium “Advanced Biotechnologies - Achievements and Prospects” (VIth Edition). Institute of Genetics, Physiology and Plant Protection, 2022. http://dx.doi.org/10.53040/abap6.2022.117.

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The identification of rare and endangered species is a valuable tool for raising awareness of those taxa facing a high risk of extinction. It is a first step towards highlighting the issue of species decline and loss, as well as encouraging decision makers to take action to improve or at least maintain the current state of biodiversity. In recent years, it has become urgently neces-sary to update and reassess the risk of extinction for species of community interest that grow in natural habitats in our country. Therefore, in 2020, a research program was initiated in the Spontaneous Flora and Herb
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STRAUPE, Inga, and Līga LIEPA. "AN ASSESSMENT OF RETENTION TREES IN HYLOCOMIOSA FOREST TYPE IN SOUTHERN LATVIA." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.111.

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In Latvia the forest legislation requires that at least five living trees must be retained per hectare after clear-cutting. It is known that retention trees significantly increase the biodiversity in production forest landscape. After clear-cutting retention trees function as habitats for various lichens, mosses, insects, fungi and birds. Over time retention trees are incorporated into the young forests stand and provide presence of old trees, which is necessary for many endangered and rare species. After the death, these trees turn into coarse woody debris which is an essential habitat and fe
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Chang, Chaofan, Baohua Mao, and Tuansheng Chen. "Study on Effect of Taxi Quantity to Taxi Split Rate." In Seventh International Conference of Chinese Transportation Professionals Congress (ICCTP). American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/40952(317)21.

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Wang, Zhengyu, and Defa Cai. "Analysis of China's Rare Earth Resources Tax." In Proceedings of the 2018 5th International Conference on Education, Management, Arts, Economics and Social Science (ICEMAESS 2018). Atlantis Press, 2018. http://dx.doi.org/10.2991/icemaess-18.2018.7.

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Reports on the topic "Rare taxa"

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Gillett, Nadezhda. Diatom-Based Stream Bioassessment: the Roles of Rare Taxa and Live/Dead Ratio. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.26.

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Rykken, Jessica. Pollinator diversity and floral associations in subarctic sand dunes of Kobuk Valley National Park, Alaska. National Park Service, 2024. http://dx.doi.org/10.36967/2302008.

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Active sand dunes in Kobuk Valley National Park are a regionally rare and ecologically distinct landscape feature occurring within the northern boreal biome. The sand dunes harbor a rich diversity of plants, including several rare and disjunct species and the endemic Kobuk locoweed (Oxytropis kobukensis). Pollinators associated with these dune plants have not been studied in Kobuk Valley, despite their essential role in transporting pollen which many plants rely on for successful reproduction. In order to gain a better understanding of pollinator diversity and plant-pollinator associations in
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Boyle, Maxwell, and Elizabeth Rico. Terrestrial vegetation monitoring at Fort Pulaski National Monument: 2019 data summary. National Park Service, 2021. http://dx.doi.org/10.36967/nrds-2288716.

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The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and monitoring is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural veg
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Waud, Roger. Tax Aversion, Deficits and the Tax Rate-Tax Revenue Relationship. National Bureau of Economic Research, 1985. http://dx.doi.org/10.3386/w1533.

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Browne, James. The 50p income tax rate. The IFS, 2012. http://dx.doi.org/10.1920/ps.ifs.2024.0926.

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Adam, Stuart, Mike Brewer, and Robert Chote. The 10% tax rate: where next? Institute for Fiscal Studies, 2008. http://dx.doi.org/10.1920/bn.ifs.2008.0077.

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Boning, William, Drahomir Klimsa, Joel Slemrod, and Robert Ullmann. Norderfriedrichskoog! Tax Havens, Tax Competition and the Introduction of a Minimum Tax Rate. National Bureau of Economic Research, 2023. http://dx.doi.org/10.3386/w31225.

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Smith, Stephen. Analysis of kettle pond plant communities of Cape Cod National Seashore (1995?2020). National Park Service, 2023. http://dx.doi.org/10.36967/2300645.

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Along transects and within boxplots, several ponds have experienced significant changes in macrophyte species composition since 1995, while others have remained relatively unchanged. In 2020 new occurrences of Phragmites australis (common reed) were documented in Duck (a single plant, which was immediately removed), Gull, and Higgins ponds. Three state-listed rare species that occur in CACO kettle ponds were not found in 2020. These included Sabatia kennedyanna (Plymouth rose gentian) (found in 2016 at Great-T), Drosera filiformis (threadleaf sundew) (found in 2016 at Great-W) and Sagittaria t
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Boyle, M., and Elizabeth Rico. Terrestrial vegetation monitoring at Cumberland Island National Seashore: 2020 data summary. National Park Service, 2022. http://dx.doi.org/10.36967/2294287.

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The Southeast Coast Network (SECN) conducts long-term terrestrial vegetation monitoring as part of the nationwide Inventory and Monitoring Program of the National Park Service (NPS). The vegetation community vital sign is one of the primary-tier resources identified by SECN park managers, and it is currently conducted at 15 network parks (DeVivo et al. 2008). Monitoring plants and their associated communities over time allows for targeted understanding of ecosystems within the SECN geography, which provides managers information about the degree of change within their parks’ natural vegetation.
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Gu, Yuanyuan, and Jhorland Ayala-García. Emigration and Tax Revenue. Banco de la República de Colombia, 2022. http://dx.doi.org/10.32468/dtseru.312.

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According to the World Migration Report 2020, the number of international migrants increased from 84 million in 1970 to 272 million in 2019, accounting for 3.5% of the world’s population. This paper investigates the aggregated effect of emigration on the tax revenue of sending countries with a focus on developing nations. Using a gravity approach, we construct a time-varying exogenous instrument out of geographic time-invariant dyadic characteristics that allow us to estimate the predicted emigration rate for every country. Then, we follow an instrumental variable approach where we use our pre
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