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Journal articles on the topic 'Dichotomous key'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Herke, Scott W., Jinchuan Xing, David A. Ray, Jacquelyn W. Zimmerman, Richard Cordaux, and Mark A. Batzer. "A SINE-based dichotomous key for primate identification." Gene 390, no. 1-2 (April 2007): 39–51. http://dx.doi.org/10.1016/j.gene.2006.08.015.

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2

Vollbrecht, Lisa, Marie Thérèse Rush, and Karl Cottenie. "Improving dichotomous keys for undergraduate teaching." SURG Journal 7, no. 1 (February 6, 2014): 23–32. http://dx.doi.org/10.21083/surg.v7i1.2750.

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University of Guelph undergraduate students have been struggling to independently identify macroinvertebrates using dichotomous keys in the Biology of Polluted Waters course (BIOL*4350). The course currently uses dichotomous keys that lack definitions of complex anatomical terms and illustrations that place features in the context of the whole organism. This results in taxonomic bias, whereby some macroinvertebrate families are ignored in subsampling, especially for Ephemeroptera (mayflies). This is of particular concern to biotic assessment of stream quality that uses Ephemeroptera as biological indicators. An updated dichotomous key for Ephemeroptera with illustrations and definitions of anatomical terms integrated within the text of the key was developed at the University of Guelph in Winter 2012. The generation of the key utilized a local macroinvertebrate collection, published literature and existing keys. The effectiveness of the updated key was tested against the BIOL*4350 key by comparing the number of correct identifications produced by undergraduate student volunteers using both keys. Additionally, the number of correct identifications by student volunteers who had previously taken BIOL*4350 (n=18) and those who had not taken the course (n=40) were compared. It was predicted that students who had previously taken BIOL*4350 would produce more correct identifications than students who had not. The new key had a significantly higher proportion of correct identifications than the old key (p

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3

Jacquemart, Anne-Laure, Pierre Lhoir, Fabian Binard, and Charlotte Descamps. "An Interactive Multimedia Dichotomous Key for Teaching Plant Identification." Journal of Biological Education 50, no. 4 (March 21, 2016): 442–51. http://dx.doi.org/10.1080/00219266.2016.1150870.

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4

Nimis, Pier Luigi, and Stefano Martellos. "Towards a digital key to the lichens of Italy." Symbiosis 82, no. 1-2 (October 22, 2020): 149–55. http://dx.doi.org/10.1007/s13199-020-00714-8.

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AbstractWork is in progress for the completion of a computer-aided key to all lichens known to occur in Italy, which will be freely available online, and as a free application for mobile devices. A first example, concerning the lichens of Northern Italy (2.339 infrageneric taxa), is already available online for testing. A computer-generated but manually edited dichotomous key is invoked for all species previously filtered via a multi-entry interface, where several selected characters can be specified in a single step. To optimize the two query interfaces, two different datasets are used, one for the dichotomous, the other for the multi-entry interface.

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5

Gobalet, Kenneth W. "An Alternative Exercise for Generating a Dichotomous Key to Vertebrae." American Biology Teacher 65, no. 9 (November 1, 2003): 697–700. http://dx.doi.org/10.2307/4451596.

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6

Stencel, John E. "An Understanding of a Dichotomous Key in a Zoology Class." American Biology Teacher 52, no. 3 (March 1, 1990): 179–81. http://dx.doi.org/10.2307/4449073.

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7

Kelso, Sylvia. "Dichotomous Key to Pond Microlife: Protists and Blue-Green Algae." Quarterly Review of Biology 64, no. 4 (December 1989): 541–42. http://dx.doi.org/10.1086/416573.

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8

Tissiani, Ana Silvia de Oliveira, Fernando Zagury Vaz-de-Mello, and José Holanda Campelo-Júnior. "Dung beetles of Brazilian pastures and key to genera identification (Coleoptera: Scarabaeidae)." Pesquisa Agropecuária Brasileira 52, no. 6 (June 2017): 401–18. http://dx.doi.org/10.1590/s0100-204x2017000600004.

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Abstract: The objective of this work was to elaborate supporting tools for the correct identification of Scarabaeidae, by an identification key of genera, and a commented list of the species present in Brazilian pastures. A data survey was performed on the specimens deposited in the main Brazilian collection and reported on the recent scientific literature. The distribution of the species was identified in the Brazilian states, based on information on feeding preference, ecological aspects, and potential for faeces removal action. The species were classified according to their importance for pastures, as: high, medium, and low. A key for the identification of the genera and subgenera of Scarabeidae present in the pastures was constructed through the analysis of the external morphology of the species and, when needed, by the analysis of sexual traits. Twenty genera and 76 species of scarab beetles were recorded for Brazilian pasturelands, among which Dichotomius bos, Dichotomius nisus, Trichillum externepunctatum, Ontherus appendiculatus, Onthophagus aff. hirculus, and Digitonthophagus sp. were considered as the most frequent, widely distributed, abundant, and important. The dichotomous key will contribute to the identification of the genera and subgenera of dung beetles (Scarabaeidae: Scarabaeinae) occurring in the Brazilian pastures.

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9

Anđić, Branko, Stanko Cvjetićanin, Mirjana Maričić, and Danijela Stešević. "Digital dichotomous key in botanical education of pupils in primary school." Inovacije u nastavi 31, no. 4 (2018): 46–59. http://dx.doi.org/10.5937/inovacije1804046a.

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10

KOUAKOU, Amani Michel, Konan Evrard Brice DIBI, Boni N’ZUE, Brice Sidoine ESSIS, and Goli Pierre ZOHOURI. "Dichotomous key determining varietal groups of yam species Dioscorea alata L." Greener Journal of Agricultural Sciences 5, no. 5 (September 20, 2015): 190–203. http://dx.doi.org/10.15580/gjas.2015.5.082415121.

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11

Ryder, R. A. "Ecosystem Health, a Human Perception: Definition, Detection, and the Dichotomous Key." Journal of Great Lakes Research 16, no. 4 (January 1990): 619–24. http://dx.doi.org/10.1016/s0380-1330(90)71449-9.

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12

FONTOURA, PAULO, PAUL J. BARTELS, ASLAK JØRGENSEN, REINHARDT MØBJERG KRISTENSEN, and JESPER GULDBERG HANSEN. "A dichotomous key to the genera of the Marine Heterotardigrades (Tardigrada)." Zootaxa 4294, no. 1 (July 17, 2017): 1. http://dx.doi.org/10.11646/zootaxa.4294.1.1.

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This is an identification guide to the 47 currently described genera of marine heterotardigrades. We provide clear definitions and illustrations of relevant anatomy and an easy to use dichotomous key. The aim of the present contribution is to enable more people to identify collected specimens of marine heterotardigrades, and hopefully, encourage more people to study this intriguing group of animals. The paper is divided into three parts. The first part gives a brief introduction to heterotardigrade morphology with special emphasis on taxonomically important characters. The second part is the actual key, which is accompanied by illustrations of both habitus and detailed foot morphology of the marine heterotardigrade genera. The third part provides up to date diagnoses of the orders, families, subfamilies and genera of marine heterotardigrades according to the most recent emendments. With the generic diagnoses, we provide a bibliography with selected literature that relates to each specific genus.

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13

Chiari, Marcela, Ana Carolina Borella Marfil Anhê, William Raimundo Costa, and Ana Paula Milla dos Santos Senhuk. "Biomonitoring of air pollution: a dichotomous key for lichen species identification." Ciência e Natura 42 (June 29, 2020): e77. http://dx.doi.org/10.5902/2179460x41851.

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Biomonitoring has been seen as complementary analysis to physicochemical methods and as a low-cost alternative, mainly for regions lacking air pollution control programs. Despite being the most widely used bioindicator for this type of pollution, lichens are not easily identified and this methodology is restricted to groups of expert researchers. Accordingly, the aim of the present study was to analyze lichen diversity in urban and industrial areas, in order to elaborate a dichotomous key to identify the listed species, based on easily visualized features. Lichens with leaf stalks belonging to family Parmeliaceae and genus Parmotrema were the most abundant, which are known for their resistance to air pollution. The study sites generally presented low lichen diversity, which may also have been influenced by the degree of vegetation around them. This result reinforces the importance of green areas for mitigating air pollution in urban environment. The dichotomous key elaborated for the lichen species found aims to support research, environmental education and management activities, and may expand the use of lichens as air-quality bioindicators.

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14

Delarze, Raymond, and François Clot. "Techniques d'interprétation des relevés de végétation forestière: entre rigueur et pragmatisme | Techniques for interpreting forest vegetation surveys: between stringency and pragmatism." Schweizerische Zeitschrift fur Forstwesen 160, s1 (December 1, 2009): s7—s12. http://dx.doi.org/10.3188/szf.2009.s0007.

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In order to interpret the 12,000 vegetation survey samples taken in the forests of Canton Vaud, half of which were placed in a systematic grid, it was necessary to develop a complex dichotomous key. This obliged the phytosociologist to specify the criteria identifying each plant community. The most recent version of the automatic dichotomous key provided satisfying results in 90% of all cases, though an expert appraisal can not be entirely dispensed with. A certain need for further improvements on the key was identified.

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15

Zettler, Jennifer A., Scott C. Mateer, Melanie Link-Pérez, Jennifer Brofft Bailey, Geneva DeMars, and Traci Ness. "To Key or Not to Key: A New Key to Simplify & Improve the Accuracy of Insect Identification." American Biology Teacher 78, no. 8 (October 1, 2016): 626–33. http://dx.doi.org/10.1525/abt.2016.78.8.626.

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Insects have extraordinary species richness: over a million species have been identified, and even more await discovery and classification. Given their abundance and diversity, insects are excellent teaching tools for science classrooms. However, accurate insect identification can be especially challenging for beginning students. Accordingly, we have developed a dichotomous key that both precollege and university instructors and students can use efficiently to correctly identify 18 taxonomic orders of insects. Our key was developed to target insects most commonly encountered throughout the coastal southeastern United States, but it can easily be adapted to other regions. This key is novel in that it incorporates not only adult insects but also their immature stages. In addition, we included insects that are likely to be collected in all seasons, facilitating implementation in the classroom throughout the academic year.

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16

Mokhtarian, P. L., and I. Salomon. "Modeling the Choice of Telecommuting: 2. A Case of the Preferred Impossible Alternative." Environment and Planning A: Economy and Space 28, no. 10 (October 1996): 1859–76. http://dx.doi.org/10.1068/a281859.

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A conceptual model of the choice to telecommute was advanced in an earlier paper. In this paper we present empirical data from a nonrepresentative sample of 628 City of San Diego employees on key variables and relationships in that model. The relationships among possibility, preference, and choice are examined. A key finding is the existence of a large group of people (57% of the sample) for whom telecommuting is a preferred impossible alternative. Dichotomous and continuous constraints are distinguished, and three dichotomous constraints are defined. ‘Lack of awareness’ is active for 4%, ‘job unsuitability’ for 44%, and ‘manager disapproval’ for 51% of the sample. For 68% of the sample, at least one of these constraints is active. Even among those for whom none of the dichotomous constraints is in force, most people do not choose telecommuting because of the presence of active continuous constraints. For only 11% of the entire sample, telecommuting is possible, preferred, and chosen. The potential impacts of self-selection bias are estimated, and sampling bias is qualitatively assessed. This analysis provides a crude but useful estimate of the potential of telecommuting in the population, and more specifically, the relative share of potential telecommuters who are prevented by key dichotomous constraints from choosing that option.

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17

Jones, Steven M., and Bill R. Smith. "Use of a dichotomous key as an aid to correlating soil series." Journal of Agronomic Education 17, no. 2 (September 1988): 128–29. http://dx.doi.org/10.2134/jae1988.0128.

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18

Wood, Piers. "A dichotomous key for the identification of common British wild flower families." Journal of Biological Education 38, no. 3 (June 2004): 125–26. http://dx.doi.org/10.1080/00219266.2004.9655919.

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19

Kofinas, Gary, Phil Lyver, Don Russell, Robert White, Augie Nelson, and Nicholas Flanders. "Towards a protocol for community monitoring of caribou body condition." Rangifer 23, no. 5 (April 1, 2003): 43. http://dx.doi.org/10.7557/2.23.5.1678.

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Effective ecological monitoring is central to the sustainability of subsistence resources of indigenous communities. For caribou, Arctic indigenous people's most important terrestrial subsistence resource, body condition is a useful measure because it integrates many ecological factors that influence caribou productivity and is recognized by biologists and hunters as meaningful. We draw on experience working with indigenous communities to develop a body condition monitoring protocol for harvested animals. Local indigenous knowledge provides a broad set of caribou health indicators and explanations of how environmental conditions may affect body condition. Scientific research on caribou body condition provides a basis to develop a simple dichotomous key that includes back fat, intestinal fat, kidney fat and marrow¬fat, as measures of body fat, which in autumn to early winter correlates with the likelihood of pregnancy. The dichotomous key was formulated on "expert knowledge" and validated against field estimates of body composition. We compare local indigenous knowledge indicators with hunter documented data based on the dichotomous key. The potential con¬tribution of community body condition monitoring can be realized through the continued comparative analysis of datasets. Better communication among hunters and scientists, and refinement of data collection and analysis methods are recommended. Results suggest that specific local knowledge may become generalized and integrated between regions if the dichotomous key is used as a generalized (semi-quantitative) index and complemented with other science and community-based assessments.

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20

Ristanto, Rizhal Hendi, Mieke Miarsyah, Ilena Amalia Luthfi, Endah Kristiani, and Risky Hasanah. "Invertebrate-Interactive Dichotomous Key Media: Enhance Students Learning Motivation in Lower Secondary School." International Journal of Information and Education Technology 10, no. 9 (2020): 669–73. http://dx.doi.org/10.18178/ijiet.2020.10.9.1441.

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The purpose of this research is to develop interactive learning media about classification of organisms. This research used modification of 4D method (Define, Design, Develop, and Disseminate from Thiagarajan et al., 1974). Invertebrate Interactive Dichotomous Key (Invertebrate-IDKM) is given in the learning at lower secondary school. Percentage of the expert validation is 80%. According to the validation result, we conclude that Invertebrate-IDKM is valid in the media, materials, languages, and eligible in the learning about the classification of organisms especially classification of invertebrate animals. Invertebrate-IDKM increases learning motivation especially lower secondary school students because it encourages interaction and use technology.

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21

To-Anun, C. "Genus Cercospora in Thailand: Taxonomy and Phylogeny (with a dichotomous key to species)." Plant Pathology & Quarantine 1, no. 1 (2011): 11–87. http://dx.doi.org/10.5943/ppq/1/1/3.

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22

Griffing, Lawrence R. "Who invented the dichotomous key? Richard Waller's watercolors of the herbs of Britain." American Journal of Botany 98, no. 12 (December 2011): 1911–23. http://dx.doi.org/10.3732/ajb.1100188.

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23

Collins, Linda T. "A Dichotomous Key to Tree Cones and Fruits of the Eastern United States." American Biology Teacher 53, no. 1 (January 1, 1991): 29–30. http://dx.doi.org/10.2307/4449209.

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24

Menezes, FGR, WE Barbosa, LS Vasconcelos, RS Rocha, R. Maggioni, OV Sousa, E. Hofer, and RHSF Vieira. "Genotypic assessment of a dichotomous key to identify Vibrio coralliilyticus, a coral pathogen." Diseases of Aquatic Organisms 128, no. 1 (March 22, 2018): 87–92. http://dx.doi.org/10.3354/dao03209.

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25

Laganis, Jana, Kristina Prosen, and Gregor Torkar. "Classroom versus Outdoor Biology Education Using a Woody Species Identification Digital Dichotomous Key." Natural Sciences Education 46, no. 1 (March 16, 2017): 160032. http://dx.doi.org/10.4195/nse2016.11.0032.

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26

Semsar, Katharine, and Janet Casagrand. "Bloom’s dichotomous key: a new tool for evaluating the cognitive difficulty of assessments." Advances in Physiology Education 41, no. 1 (March 1, 2017): 170–77. http://dx.doi.org/10.1152/advan.00101.2016.

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27

BOBROV, ANATOLY, and YURI MAZEI. "A review of testate amoeba genus Cryptodifflugia Penard, 1890 (Phryganellina: Cryptodifflugiidae) with a key to species." Zootaxa 4282, no. 2 (June 26, 2017): 292. http://dx.doi.org/10.11646/zootaxa.4282.2.4.

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The testate amoeba genus Cryptodifflugia is reviewed. Thirty-two taxa are described. Four taxa, namely Cryptodifflugia collum (Chardez, 1971), Cryptodifflugia minuta (Playfair, 1917), Cryptodifflugia patinata (Schönborn, 1965), Cryptodifflugia psammophila (Golemansky, 1970), appear as new combinations. A dichotomous identification key is provided.

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28

Bowers, Steve. "Dichotomous Keys for Scaling and Grading Merchantable Quality Sawlogs." Western Journal of Applied Forestry 18, no. 4 (October 1, 2003): 250–58. http://dx.doi.org/10.1093/wjaf/18.4.250.

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Abstract This study documented and field-tested a simplified version of the Westside Grading Guidelines as published in the Official Rules Handbook by the Northwest Log Rules Advisory Group. A four-step dichotomous key was documented and field-tested to determine merchantable vs. nonmerchantable logs. The study also documented and field-tested an individual seven-step dichotomous log grading key for evaluating second-growth Douglas-fir (Pseudotsuga menziesii), Sitka spruce (Picea sitchensis), western hemlock (Tsuga heterophylla), and grand fir (Abies grandis) as derived from the Rules For Grading Logs section of the Official Rules Handbook. Results were compared with certified scalers employed by Yamhill Log Scaling & Grading Bureau and Columbia River Log Scaling & Grading Bureau. Eighty-four individuals measured the length, scaling diameter, determined merchantability versus nonmerchantability and assigned log grade for 440 logs. Results showed participants in the study correctly measuring log length 99% of time, scaling diameters were recorded correctly at an 89% rate, and merchantability and log grade at 98 and 97%, respectively. West. J. Appl. For. 18(4):250–258.

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29

HENRIQUES, AUGUSTO LOUREIRO, and TIAGO KÜTTER KROLOW. "Description of a new species of Tabanidae (Diptera) from the Amazon region: Catachlorops (Rhamphidommia) dubius sp. nov. and a key to species of the subgenus." Zootaxa 2295, no. 1 (November 23, 2009): 64–68. http://dx.doi.org/10.11646/zootaxa.2295.1.7.

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30

CARVALHO, GERVÁSIO SILVA, and ANDRESSA PALADINI. "A new species of the Neotropical spittlebug genus Catrimania Fennah, 1968 (Hemiptera: Cercopidae) with a dichotomous key to species of the genus." Zootaxa 4281, no. 1 (June 22, 2017): 280. http://dx.doi.org/10.11646/zootaxa.4281.1.23.

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31

Coles, S., N. Maxted, and L. J. G. van der Maesen. "Identification aids for Cicer (Leguminosae, Cicereae) taxa." Edinburgh Journal of Botany 55, no. 2 (July 1998): 243–65. http://dx.doi.org/10.1017/s0960428600002183.

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Identification aids for Cicer (Leguminosae, Cicereae) taxa are presented. A DELTA format dataset was generated for 42 Cicer taxa, on the basis of observation of 214 herbarium specimens and information obtained from the literature. Using the programs key, explore and confor, a dichotomous key, a tabular key, an interactive key and brief descriptions were produced and are presented.

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32

Miller, Gary W., Leland F. Hanks, and Harry V. Wiant. "A Key for the Forest Service Hardwood Tree Grades." Northern Journal of Applied Forestry 3, no. 1 (March 1, 1986): 19–22. http://dx.doi.org/10.1093/njaf/3.1.19.

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Abstract A dichotomous key organizes the USDA Forest Service hardwood tree grade specifications into a stepwise procedure for those learning to grade hardwood sawtimber. The key addresses the major grade factors, tree size, surface characteristics, and allowable cull deductions in a series of paired choices that lead the user to a decision regarding tree grade. Subtle grading rules, previously presented as footnotes to the major specifications, are included in the key. It simplifies the process so that the beginner can learn the system quickly, without detailed instruction from experienced tree traders. North. J. Appl. For. 3:19-22, Mar. 1986.

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33

Schneider, Scott A. "A key to the flat grass scale genus Nipponaclerda (Hemiptera, Coccomorpha, Aclerdidae)." ZooKeys 862 (September 9, 2019): 81–87. http://dx.doi.org/10.3897/zookeys.862.35294.

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The flat grass scale genus Nipponaclerda comprises four species, native to Central and East Asia. Nipponaclerdabiwakoensis has been introduced to the United States and is considered a serious pest of Phragmitesaustralis, the common reed. Heavy infestations of N.biwakoensis in coastal marshes of Louisiana have coincided with extensive die-off of reeds. In this article, dichotomous identification keys to the genera of Aclerdidae and to the species of Nipponaclerda are provided, allowing for accurate identification of species found in the native and invasive range.

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34

Altmann, Marselha Vianna, and Jefferson Monticelli Correio. "Adoption of key performance indicators in Brazilian startups." Desenvolve Revista de Gestão do Unilasalle 9, no. 2 (July 30, 2020): 09. http://dx.doi.org/10.18316/desenv.v9i2.6690.

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Our study aims to analyze the adoption of main key performance indicators in Brazilian startups based on the software as a service (SaaS) model. This study is exploratory and descriptive using a survey carried out in 2018 a closed-ended questionnaire with dichotomous answers as a method. As for the use of the model to measure the performance of the startup, the applicability, in general, was mostly positive. Startups have already shown benefits in the application of a structured performance measurement model, but more focused on cash management and less concerned with commercial and marketing expenses. This research contributes to check the applicability of performance indicators in startups in the SaaS model, while implying in impediments to the scalability of the product or service.

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35

Weiner, Gudrun, and Walter Liese. "Generic Identification Key to Rattan Palms Based on Stem Anatomical Characters." IAWA Journal 14, no. 1 (1993): 55–61. http://dx.doi.org/10.1163/22941932-90000576.

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The rattan palms consist of 13 genera which present distinct anatomical differences. Of special significance are the number of phloem fields and vessels per vascular bundie, type of ground parenchyma, occurrence of fibre rows in the cortex, 'yellow cap', raphide sacs, arrangement of sieve tubes and size of the fibre sheath of the outer vascular bundles. On the basis of these features a dichotomous key for the identification of the rattan genera has been developed. Since the technological properties of the c. 650 species differ considerably, this means of identification at least at the generic level is of practical value.

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36

Stagg, Bethan C., Maria E. Donkin, and Alison M. Smith. "Bryophytes for Beginners: The usability of a printed dichotomous key versus a multi-access computer-based key for bryophyte identification." Journal of Biological Education 49, no. 3 (August 5, 2014): 274–87. http://dx.doi.org/10.1080/00219266.2014.934900.

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37

MASSIN, CLAUDE. "Holothuria (Selenkothuria) parvispinea n. sp. (Echinodermata, Hololthuroidea, Holothuriidae) with key to the sub-genus Selenkothuria." Zootaxa 3609, no. 3 (January 30, 2013): 343–48. http://dx.doi.org/10.11646/zootaxa.3609.3.9.

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Description of a new species from Australia, belonging to the subgenus Selenkothuria (Holothuria, Aspidochirotida). A dichotomous key of the thirteen valid species included in the subgenus is also given. The species H. perrieri Thandar, 1977 and H. spinea Cherbonnier, 1988 are considered as non valid.

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38

CHRISTOPHORYOVÁ, JANA, FRANTIŠEK ŠŤÁHLAVSKÝ, and PETER FEDOR. "An updated identification key to the pseudoscorpions (Arachnida: Pseudoscorpiones) of the Czech Republic and Slovakia." Zootaxa 2876, no. 1 (May 12, 2011): 35. http://dx.doi.org/10.11646/zootaxa.2876.1.4.

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An illustrated dichotomous key is provided for the identification of adults of the pseudoscorpion species found in the Czech Republic and Slovakia, based on morphological and morphometric characters. The pseudoscorpion fauna of Slovakia includes 51 species in 7 families, and that of the Czech Republic includes 38 species in 7 families. New country records are provided: Mundochthonius carpaticus Rafalski and Microbisium brevifemoratum (Ellingsen) in the Czech Republic and Microbisium suecicum Lohmander in Slovakia.

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39

Bomfim, Grecilane S., Janisete G. Silva, and Anibal Ramadan Oliveira. "A new species of Licneremaeus (Oribatida: Licneremaeidae) from Brazil, with an identification key to the known species of the genus." Systematic and Applied Acarology 22, no. 11 (October 16, 2017): 1872. http://dx.doi.org/10.11158/saa.22.11.7.

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Licneremaeus braziliensis sp.nov. is described and illustrated based on female specimens collected from palm leaflets (Arecaceae) in Ilhéus, state of Bahia, northeastern Brazil. This is the first species of the genus described from this country. A dichotomous key for identification of all known species of Licneremaeus is proposed.

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40

Nowak, Sławomir, Dariusz L. Szlachetko, and Joanna Mytnik-Ejsmont. "New Species of the Genus Altensteinia (Orchidaceae, Spiranthoideae) from Colombia." Polish Botanical Journal 59, no. 1 (July 1, 2014): 11–14. http://dx.doi.org/10.2478/pbj-2014-0015.

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Abstract A new species of Altensteinia Kunth, probably endemic to the Colombian Andes, is described, illustrated and discussed, with notes on its habitat and altitude. A dichotomous key for determination of Altensteinia species in Colombia is provided

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ÁLVAREZ, YOSIEL, and RAYNER NÚÑEZ. "A new subspecies of Calisto disjunctus Núñez & Barro (Lepidoptera: Nymphalidae: Satyrinae) from Western Cuba, with a key to the Cuban members of the genus." Zootaxa 4915, no. 1 (January 20, 2021): 107–18. http://dx.doi.org/10.11646/zootaxa.4915.1.7.

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Calisto disjunctus hersheyi ssp. n. is described from western Cuba. Additionally, a dichotomous key including all described Cuban taxa of the herophile species group of Calisto is given together with illustrations of live specimens of most taxa.

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Bell, N. L. "A computerised identification key for 30 genera of plant parasitic nematodes." New Zealand Plant Protection 55 (August 1, 2002): 287–90. http://dx.doi.org/10.30843/nzpp.2002.55.3954.

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A computerbased key for identifying plant parasitic nematodes of temperate agriculture in New Zealand and around the world is described It uses the Lucid software developed at the University of Queensland and includes images of major diagnostic features The key is multiaccess rather than dichotomous so may be entered at any point allowing for the most obvious characters of a specimen to be scored first and thereby immediately reduce the number of likely taxa Both qualitative and quantitative characters are used The key requires that the specimen can be viewed microscopically but examples of most morphological terms are illustrated so the nonspecialist should be able to make use of the key

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DI NICOLA, MATTEO RICCARDO. "A revised dichotomous key to the snakes of Italy (Reptilia, Squamata, Serpentes), according to recent systematic updates." Zootaxa 4686, no. 2 (October 15, 2019): 294–96. http://dx.doi.org/10.11646/zootaxa.4686.2.10.

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The diffusion of “citizen science” brings considerable benefits to ecological research (Bonney et al. 2009; Dickinson et al. 2012) and involves an increasing use of data provided by “non-professionals” for the establishment of distribution atlases (for instance, through online platforms such as “iNaturalist”). Therefore, it is important that the presented data are sufficiently reliable and, for this reason, photographic documentation of what has been observed is always encouraged. In many cases, however, the circumstances or the conditions of the observed organism do not allow a photographic identification. Dichotomous keys are tools that, in addition to the use by technicians, researchers and students, can be useful to “non-professional” observers to improve the accuracy in the determination of observations to be submitted to the scientific community. This also applies to the herpetological field, and thus to this work, which offers an updated dichotomous key for the determination of Italian snakes (the first since the one published in Corti et al. (2011)) in light of the various systematic updates that affected this taxon.

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Eyssartier, G., and B. Buyck. "Notes on the Australian species described in the genus Cantharellus (Basidiomycetes)." Australian Systematic Botany 14, no. 4 (2001): 587. http://dx.doi.org/10.1071/sb00026.

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Type specimens of Australian species of CantharellusAdans. : Fr. are critically examined. Two, perhaps three taxa (if C. ochraceoravus is not a Clitocybe) among 17 belong to the genus and a short dichotomous key is provided for these species.

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Clark, Fred E., and R. Timothy Patterson. "An illustrated key to the identification of unilocular genera of calcareous foraminifera." Journal of Paleontology 67, no. 1 (January 1993): 20–28. http://dx.doi.org/10.1017/s0022336000021132.

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Taxonomic keys are rarely used as an aid to the identification of foraminifera. Such keys become increasingly attractive, however, as the number of taxa which must be distinguished becomes large. The proliferation of known genera over the last 25 years is nowhere more apparent than in the unilocular calcareous foraminifera, where the number of genera has risen from 5 to 46. We present herein a dichotomous key in which any species may be assigned to its proper genus by progressing through a series of steps, consisting of paired statements, in which only one choice is made at a time.

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MARIA, TATIANA FABRICIO, ANDRÉ MORGADO ESTEVES, NICOLE SMOL, ANN VANREUSEL, and WILFRIDA DECRAEMER. "Chromaspirina guanabarensis sp. n. (Nematoda: Desmodoridae) and a new illustrated dichotomous key to Chromaspirina species." Zootaxa 2092, no. 1 (May 6, 2009): 21–36. http://dx.doi.org/10.11646/zootaxa.2092.1.2.

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A new species of Chromaspirina is described from Bica Beach, a polluted beach situated at Ilha do Governador, Guanabara Bay on the coast of Rio de Janeiro (Brazil). The new species belongs to the group of species within the genus which bears a poorly developed dorsal tooth. The new species is characterized by large body size, conoid tail shape, small acute dorsal tooth, long slender spicules with sclerotised hooked capitulum, and sexual dimorphism of the nonstriated part of the tail. A new illustrated dichotomous key to males of species of Chromaspirina is proposed.

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Vincecruz-Abeledo, Chona C., and Ma Carmen A. Lagman. "A revised dichotomous key for the mangrove crab genus Scylla De Haan, 1833 (Brachyura, Portunidae)." Crustaceana 91, no. 7 (2018): 847–65. http://dx.doi.org/10.1163/15685403-00003798.

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Abstract Species identification in mangrove crabs of the genus Scylla De Haan, 1833 is problematic, due to the high intraspecific variation and the continuity of diagnostic features. To determine the hierarchy of characters that are most useful in differentiating Scylla species from the Philippines, 1,185 mangrove crabs were collected from seven sites across the Philippines. Morphological species identification was contrasted with morphometric and molecular techniques. The hierarchy of characters in the existing dichotomous key resulted in the misidentification of 245 samples. Errors stem from asymmetry in the features of the chelipeds and the continuity in the features of the frontal lobe spines. Considering mainly morphological characters, the most reliable traits were the geometric patterns in the swimming and walking legs. Nonetheless, 27 individuals with morphological ambiguities exhibited unique patterns in digested nuclear ITS-1 fragments, unreported in any known species of Scylla. A revised hierarchy of characters resulted in a 97.8% match with molecular species identification.

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Knight, Kathryn, and Randall S. Davies. "Using a Mobile Dichotomous Key iPad application as a scaffolding tool in a museum setting." Interactive Learning Environments 24, no. 4 (June 26, 2014): 814–28. http://dx.doi.org/10.1080/10494820.2014.924532.

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Razak, N. F. A., C. V. Supramaniam, and A. Zieritz. "A dichotomous PCR–RFLP identification key for the freshwater mussels (Bivalvia: Unionida) of Peninsular Malaysia." Conservation Genetics Resources 11, no. 4 (March 31, 2018): 457–64. http://dx.doi.org/10.1007/s12686-018-1038-8.

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Andjić, Branko, Stanko Cvijetićanin, Simon Hayhoe, Rade Grujičić, and Danijela Stešević. "DICHOTOMOUS KEYS IN THE BOTANICAL LEARNING OF NON-VISUAL (BLIND) PEOPLE." Journal of Baltic Science Education 18, no. 5 (October 12, 2019): 668–80. http://dx.doi.org/10.33225/jbse/19.18.668.

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Recently, the research about innovative approaches in the education of blind (non-visual- NV) students has intensified; however the use of dichotomous keys (DK) in their botanical education has not yet been examined. This research explored the contribution of two self-generated dichotomous keys (DK) for plant identification (a digital version- DDK and a printed version- DPK), to the botanical education of NV students. The research included 100 students, with an average age of 24, divided into 2 groups. Group E1 determined the plants using the DDK while in Group E2 plants were identified using the DPK. The DDK contributed more than the DPK in helping the NV participants to acquire the quality and durability knowledge they need to identify different plant groups (woody, bushy and herbaceous plants). The NV has the greatest success in the identification of woody plants, and the least success in the identification of herbaceous plants. The members of both groups (E1, E2) had possitive opinion about the contribution of the applicable dichotomous key to their knowledge, the activities in it. Due to this fact, both versions of DKs are recommended as new assistive tools in the botanical education of NV students. Keywords: botanical education, plants identification, dichotomous keys, non-visual people, quasi-experimental design.

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