Journal articles: 'EM surveys'

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Crowley, Shannon M., Dexter P. Hodder, and Karl W. Larsen. "Canada Lynx (Lynx canadensis) detection and behaviour using remote cameras during the breeding season." Canadian Field-Naturalist 127, no. 4 (January 3, 2014): 310. http://dx.doi.org/10.22621/cfn.v127i4.1512.

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The efficacy of surveys in detecting Canada Lynx (Lynx canadensis) can vary considerably by geographic area. We conducted surveys using digital passive infrared trail video-cameras from January to April 2013, during the breeding season of the Canada Lynx, in the John Prince Research Forest in central British Columbia. We used snow-track surveys to test the efficacy of our camera surveys. We measured trail camera detection rates by survey week and location and we noted Canada Lynx activity and behaviours recorded by the cameras. The detection rate increased between January and April, reaching a peak of 8 Canada Lynx/100 camera-days in early April. Canada Lynx spent more time at camera sites displaying behaviours such as scent-marking and cheek-rubbing in late March. The combination of both snow-track and trail camera surveys was especially effective, with Canada Lynx detected at 77% of all monitored sites. Depending on survey objectives, it may be beneficial to conduct camera as well as other non-invasive survey methods for Canada Lynx during the breeding season, when survey efficacy and detection rates are maximized.

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Rose, Richard. "Medidas de democracia em surveys." Opinião Pública 8, no. 1 (May 2002): 01–29. http://dx.doi.org/10.1590/s0104-62762002000100001.

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Este artigo examina como as questões dos surveys sobre democracia são estruturadas de modos diferentes, dependendo do emprego de uma definição idealista ou realista e da presença ou não de comparações com regimes alternativos. Começo mostrando medidas de democracia em países pós-comunistas que perguntam às pessoas se estão satisfeitas ou não com a democracia e pedem que a comparem com um padrão ideal. As seções posteriores apresentam os resultados de questões realistas do New Democracies Barometer, que pedem às pessoas para avaliar regimes do passado, do presente e do futuro - e alternativas não-democráticas historicamente familiares.

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Squires, John R., Kevin S. McKelvey, and Leonard F. Ruggiero. "A Snow-tracking Protocol Used to Delineate Local Lynx, Lynx canadensis, Distributions." Canadian Field-Naturalist 118, no. 4 (October 1, 2004): 583. http://dx.doi.org/10.22621/cfn.v118i4.60.

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Determining Canada Lynx (Lynx canadensis) distribution is an important management need, especially at the southern extent of the species range where it is listed as threatened under the U. S. Endangered Species Act. We describe a systematic snowtrack based sampling framework that provides reliable distribution data for Canada Lynx. We used computer simulations to evaluate protocol efficacy. Based on these simulations, the probability of detecting lynx tracks during a single visit (8 km transect) to a survey unit ranged from approximately 0.23 for surveys conducted only one day after snowfall, to 0.78 for surveys conducted 7 days after a snowfall. If the survey effort was increased to three visits, then detection probabilities increased substantially from 0.58 for one day after snowfall to about 0.95 for surveys conducted 7 days after a snowfall. We tested the protocol in the Garnet Range, Montana, where most lynx were radio-collared. We documented a total of 189 lynx tracks during two winters (2001-2003). Lynx distribution based on snow-track surveys was coincident with the area defined through radio telemetry. Additionally, we conducted snow-track surveys in areas of western Wyoming where lynx were believed present but scarce. We detected a total of six lynx tracks during three winters (1999-2002). In Wyoming , where lynx presence was inferred from a few tracks, we verified species identification by securing genetic samples (hairs from daybeds) along track-lines.

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Seburn, David C., Carolyn N. L. Seburn, and Wayne F. Weller. "A Localized Decline in the Western Chorus Frog, Pseudacris triseriata, in Eastern Ontario." Canadian Field-Naturalist 122, no. 2 (April 1, 2008): 158. http://dx.doi.org/10.22621/cfn.v122i2.575.

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To assess whether Western Chorus Frogs have declined in eastern Ontario, we conducted amphibian call surveys at 18 sites in the Cornwall area, where they were heard calling in 1990, as well as selected wetlands in the same area. Chorus frogs were detected at only 1 of the 18 original locations during surveys in 2001 and 2007. When survey locations with and without Chorus Frogs were considered, the site occupancy rate declined from 58% in 1990, to only 12% in 2007. Chorus Frogs appear to have declined in this area of eastern Ontario which is adjacent to documented declines in western Québec and northern New York.

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Henkel, Karl. "Análise da não resposta em surveys políticos." Opinião Pública 18, no. 1 (June 2012): 216–38. http://dx.doi.org/10.1590/s0104-62762012000100011.

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Este artigo analisa a estrutura social dos entrevistados que apontam o item não resposta em um survey sobre assuntos políticos. Para isso foi realizado um survey com 2.110 jovens eleitores da rede pública de ensino em Belém (PA). Os dados indicam que a quota da não resposta aumenta com a mudança de um ciclo de vida para outro ou com a própria experiência obtida pelos efeitos das políticas públicas, o que deixa o entrevistado em dúvida em relação aos valores e opiniões estabelecidos.

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Honarmand, Arash, Hussein Sadeghi-namaghi, and Enrico De Lillo. "Three new Aceria spp. (Acari: Trombidiformes: Eriophyoidea) associated to Artemisia spp. (Compositae) from South Khorasan province, East Iran ." Systematic and Applied Acarology 25, no. 2 (February 21, 2020): 349–60. http://dx.doi.org/10.11158/saa.25.2.11.

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During the field surveys of eriophyoid mites associated to plant species of Artemisia L. (Compositae) from semi-arid and arid environment in East Iran (Birjand, South Khorasan, Iran 2016-2017), three new Aceria spp. (Acari: Trombidiformes: Eriophyidae) were collected. They are Aceria gallartae sp. nov. on Artemisia sieberi Besser, Aceria khaniensis sp. nov. on A. tournefortiana Rchb., and Aceria alghoorii sp. nov. on A. scoparia Waldst. & Kitam., which are illustrated and described herein.

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Micevski, Nikola, Filip Franeta, Martin Gascoigne-Pees, Branko Micevski, and Rudi Verovnik. "BUTTERFLY SURVEYS IN ALBANIA DURING 2014 INCLUDING THE DISCOVERY OF TWO NEW SPECIES FOR THE COUNTRY." Ecologica Montenegrina 3 (July 14, 2015): 1–12. http://dx.doi.org/10.37828/em.2015.3.1.

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During field surveys conducted in Albania in 2014, we encountered 90 species of butterflies. Anthocharis damone Boisduval, 1836 is a new species for the fauna of Albania while Apatura metis Freyer, 1829 is confirmed for the country. With these discoveries the number of butterfly species known to occur in Albania has risen to 200 and our surveys added many new sites for species considered rare and local in Albania. In addition, the life cycles of Lycaena ottomana (Lefèbvre, 1830) and Apatura metis from Albania are documented and discussed.

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Döker, İsmail, Cengiz Kazak, and Kamil Karut. "The genus Amblyseius Berlese (Acari: Phytoseiidae) in Turkey with discussion on the identity of Amblyseius meridionalis." Systematic and Applied Acarology 25, no. 8 (August 8, 2020): 1395–420. http://dx.doi.org/10.11158/saa.25.8.4.

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Surveys were conducted to assess Phytoseiidae (Acari: Mesositgmata) diversity in various habitats and ecosystems (including natural and agricultural areas) since 2008 in Turkey. This paper aims to provide a review of the Turkish species belonging to genus Amblyseius Berlese (Acari: Phytoseiidae) based on materials collected during these surveys as well as previous records. As a result, A. nemorivagus Athias-Henriot was found for the first time for Turkish fauna. In addition, unknown male of A. bryophilus Karg is described and illustrated. A revised identification key is provided for the 13 Amblyseius species found in Turkey. Validity of some previous Turkish records, and identity of A. meridionalis Berlese, are discussed. There are series of discrete species reported under the name A. meridionalis, none of them truly match with the original description in terms of shape of ventrianal shield. Our results indicated that A. kadzhajai Gomelauri, A. meridionalis, A. nemorivagus and A. obtusus (Koch) sensu Karg, were found only on moss. Amblyseius andersoni (Chant), A. herbicolus (Chant) and A. swirskii Athias-Henriot are common in agricultural ecosystems or higher plants. According to results, there is a different geographic distribution between these three species; A. swirskii is reported only from east Mediterranean, while A. herbicolus only from North-East (Black Sea region), A. andersoni is common in western Turkey. Only a few specimens of Amblyseius adjaricus Wainstein & Vartapetov and A. bryophilus were collected, from cultivated plants from Black Sea region. Therefore, potential of Turkish populations of these five species and their using possibilities in biological control are warranted in Turkey.

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9

Mutton, Paul. "Superparamagnetic effects in EM surveys for Mineral Exploration." ASEG Extended Abstracts 2012, no. 1 (December 2012): 1–6. http://dx.doi.org/10.1071/aseg2012ab413.

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Zhou, Zikun, Aihua Weng, Xueqiu Wang, Zonglin Zou, Yu Tang, and Tianqi Wang. "Source shape impact on controlled source EM surveys." Journal of Applied Geophysics 171 (December 2019): 103858. http://dx.doi.org/10.1016/j.jappgeo.2019.103858.

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USMAN, MUHAMMAD, and ABDUL NASIR KHALID. "Termitomyces acriumbonatus sp. nov. (Lyophyllaceae, Agaricales) from Pakistan." Phytotaxa 477, no. 2 (December 24, 2020): 217–28. http://dx.doi.org/10.11646/phytotaxa.477.2.6.

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Four Termitomyces samples were collected in fungal surveys during 2016–2017 at Pabbi Forest Park, Punjab, Pakistan. Detailed morphological examination showed the four collections represent a new species. The phylogenetic analyses of Internal Transcribed Spacer (ITS) and Larger Sub-Unit (LSU) genes also supported the morphology to establish the new species which we describe and illustrate in this paper. The new species, Termitomyces acriumbonatus, is characterized by a small pileus 15–30 mm diam., with pointed grayish brown perforatium, cylindrical smooth stipe, and ellipsoid, 6.1−8.7 × 4.5–6.5 μm sized basidiospores.

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Kaspar, Wendi. "C&RL Spotlight." College & Research Libraries News 80, no. 8 (September 6, 2019): 476. http://dx.doi.org/10.5860/crln.80.8.476.

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It seems like the discourse on the value of the MLS surfaces in a very periodic way in the profession, either in the scholarly literature or less formal venues and day-to-day interactions. Certainly, it is not uncommon to hear from peers in other departments or from university administrators that they are surprised that practicing librarians, even those with faculty status, are not required to have a PhD. Studies and surveys are rampant through the library literature that explore the perceived value of the master’s in library science (or library studies, librarianship, information sciences, etc.) within different contexts, kinds of institutions, and positions.

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Hanke, Gavin F., and Steven M. Roias. "First Specimens of the Marine Eels Venefica ocella and V. tentaculata (Nettastomatidae) from British Columbia." Canadian Field-Naturalist 126, no. 3 (January 23, 2013): 210. http://dx.doi.org/10.22621/cfn.v126i3.1362.

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Until recently, only the following seven species of marine eels were known to exist in waters off British Columbia (based on literature sources and museum records): Nemichthys scolopaceus, and Avocettina infans (Nemichthyidae, snipe eels), Xenomystax atrarius (Congridae, conger eels), Serrivomer jesperseni (Serrivomeridae, sawtooth eels), Cyema atrum (Cyematidae, bobtail eels), Synaphobranchus affinis (Synaphobranchidae, cutthroat eels), and Thalassenchelys coheni (Colocongridae, worm eels). Histiobranchus bathybius (also in the Synaphobranchidae) is expected to occur in British Columbia, since its range extends from Mexico to Alaska. Recent surveys to determine the viability of crab fisheries facilitated the collection of non-game fishes from by-catch in bottom-trawl samples. Several eels were collected between 2004 and 2006, and they were originally identified as Serrivomer jesperseni (Serrivomeridae). Re-examination of these specimens indicates that they all are duckbill eels (Nettastomatidae), the first records of this family north of 45°39'N along the North American Pacific coast. Both Venefica ocella and V. tentaculata are represented, with V. ocella found farther north than V. tentaculata. All British Columbia specimens are housed at the Royal British Columbia Museum. The collection of new deep-water species in British Columbia reinforces the value of survey sampling to improve our knowledge of biodiversity.

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Ferla, Júlia Jantsch, Maicon Toldi, Wesley Borges Wurlitzer, and Noeli Juarez Ferla. "Description of a new species of Aponychus and redescriprion of Tetranychus armipenis (Tetranychidae)." Systematic and Applied Acarology 25, no. 6 (June 15, 2020): 1064–74. http://dx.doi.org/10.11158/saa.25.6.9.

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Spider mite surveys conducted in Rio Grande do Sul state, Brazil, allowed us to provide the redescription of Tetranychus armipenis Flechtmann & Baker (Tetranychidae) from specimens collected on native plant species from Pampa biome, Rio Grande do Sul state. A new species of spider mite, Aponychus mauritianum sp. nov. is described and illustrated based on specimens collected from Solanum mauritianum Scop. (Solanaceae) in the municipality of Lajeado in the same state. New hosts for Atrichoproctus uncinatus Flechtmann and Schizotetranychus oryzae Rossi de Simons are also reported.

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15

LI, XIAO-LING, SU-RUI WU, CHUN-LI WANG, YUN-LI FENG, CHUN-YAN ZHAO, ZHENG-QI CHEN, JIN-FENG YU, RUI LUO, ITTHAYAKORN PROMPUTTHA, and DA-FENG SUN. "Two new species of Phyllachora (Phyllachoraceae, Phyllachorales) on bamboo from China." Phytotaxa 425, no. 2 (December 2, 2019): 78–86. http://dx.doi.org/10.11646/phytotaxa.425.2.2.

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The genus Phyllachora is the largest genus in the family Phyllachoraceae. Phyllachora species are obligate biotrophic fungi with a tropical distribution. During our field surveys in Yunnan province of China, fifteen graminicolous Phyllachora species were collected. Multi-locus phylogenetic analyses of ITS and LSU together with morphological characteristics, two new species, Phyllachora dendrocalami-membranacei sp. nov. on Dendrocalamus membranaceus and P. dendrocalami-hamiltonii sp. nov. on D. hamiltonii are described and illustrated. Phyllachora dendrocalami-membranacei is characterized by its dump-bell to ellipsoidal to ovoid ascospores (15–25 × 5–11 μm) while P. dendrocalami-hamiltoniicola is distinguished by its dump-bell to ellipsoidal ascospores (15–30 × 8–12 μm).

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Williams, Baden G., and John Anderson. "Hydrological Aspects of Electromagnetic Surveys." Journal of Agricultural and Marine Sciences [JAMS] 19 (January 1, 2014): 63. http://dx.doi.org/10.24200/jams.vol19iss0pp63-70.

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Interpreting Electromagnetic (EM) surveys - Electromagnetic induction techniques have now largely replaced previous descriptive, and largely subjective, techniques used for soil salinity surveys. The question then is a matter of how to interpret the EM data. A very clear linkage exists between Apparent Electrical Conductivity (ECa) and the total soluble salts in the upper soil profile. This, in turn, can be interpreted as reflecting the degree of vertical/ lateral leaching of soluble salts, or of salt accumulation in the profile. Topography, depth to groundwater and groundwater salinity also appear to affect ECa, although they are not suited to rapid survey techniques and do not necessarily have a direct relationship with either the total salt content of the upper soil profile or the ECa values. The interpretation of isoconductivity maps in terms of the degree of leaching of the soil profile from point to point provides an added hydrological management perspective to EM soil salinity surveys.

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Dunnam, Curt. "EM Site A.C. Magnetic Field Sources, Surveys and Solutions Part IV: Survey Data Analysis." Microscopy Today 4, no. 4 (May 1996): 20–21. http://dx.doi.org/10.1017/s1551929500068450.

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Up to the present waypoint in this series on EM site magnetic fields, we have identified typical sources of time-varying magnetic field intensities, examined salient field characteristics and illustrated correct survey methods. Our goal this month is to analyze data collected at a proposed site and answer the key question of whether or not the candidate site is, as far as magnetic fields go, acceptable for EM use. In the process of analyzing the magnetic field survey data we will define some of the interpretive techniques involved and observe the distinction between localized (a.c. power) and non-localized (geomagnetic) time-varying fields. Finally, we will discuss the implications of EM susceptibility threshold vs. measured field ratios when considering remedial site shielding.

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Beamish, David. "The canopy effect in airborne EM." GEOPHYSICS 67, no. 6 (November 2002): 1720–28. http://dx.doi.org/10.1190/1.1527073.

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Airborne electromagnetic (AEM) surveys may be used to provide environmental subsurface assessments. Trial fixed‐wing AEM surveys were conducted in the central English Midlands for such purposes. This paper investigates a specific issue, that of the canopy effect, which needs to be addressed when high‐resolution AEM data are to be interpreted accurately. Any elevated feature (typically tree cover) that gives rise to underestimated altimeter readings causes the canopy effect. Half‐space models obtained from conventional, half‐space procedures together with formal numerical inversion techniques form the basis of the study. Both theory and survey data are used to assess the significance of the canopy thickness on the resistivity models. The pseudolayer half‐space method has a stated immunity to altitude errors. The method is found to be highly effective in returning resistivity estimates unbiased by altimeter errors. The associated positive apparent depths provide realistic estimates of canopy thickness while, elsewhere, negative values may be returned. Published numerical inversion schemes do not discuss any corresponding requirement to reduce canopy effect bias. Underestimated altitude measurements introduce false high‐resistivity zones with high wavenumber content unless an equivalent pseudolayer concept is used. The study indicates a requirement for a formal pseudolayer (an at‐surface perfect resistor of variable depth) to be included in the model when canopy zones are present.

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Dunnam, Curt R. "EM Site A.C. Magnetic Field Sources, Surveys and Solutions Part III: Survey Instrumentation and Methods." Microscopy Today 4, no. 1 (February 1996): 28–29. http://dx.doi.org/10.1017/s1551929500067018.

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A.C. magnetic fields exist throughout every EM site. For a given site, then, how does one predict when EM interference problems are likely to occur? Obviously, an accurate, meaningful magnetic field survey is the first step toward evaluating site EM magnetic field compatibility. Consequently, this article in our series will describe measurement equipment and techniques for achieving accurate, unambiguous magnetic field characterization.In a previous article (Part II: “ACMF/EM Antipathy”, Microscopy Today, November ‘95), we examined several types of sources which produce alternating current magnetic fields (ACMFs). In near proximity, or at sufficiently high power levels, any of these sources (e.g., transformers, power cabling, ground currents, and/or combinations thereof) can affect EM operation. In this article, we will review specific instrumentation and methods for accurate magnetic field survey data collection and interpretation, a necessary prior step for EM interference prediction and resolution.

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Beamish, David, and Annina Mattsson. "Time-Lapse Airborne EM Surveys Across a Municipal Landfill." Journal of Environmental and Engineering Geophysics 8, no. 3 (September 2003): 157–65. http://dx.doi.org/10.4133/jeeg8.3.157.

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Sykes, Michael, Peter Wolfgram, John Hart, and Jim Mckinnon-Matthews. "Airborne EM surveys over the Barrow Creek Prospect, NT." ASEG Extended Abstracts 2006, no. 1 (December 2006): 1–10. http://dx.doi.org/10.1071/aseg2006ab174.

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Oldenburg, Douglas, Robert Eso, Scott Napier, and Nigel Phillips. "Comparison of 3D conductivity imaging from multiple EM surveys." ASEG Extended Abstracts 2007, no. 1 (December 1, 2007): 1–6. http://dx.doi.org/10.1071/aseg2007ab104.

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Ingerov, Igor. "Marine EM Surveys on Coastal Shelf and Transition Zones." ASEG Extended Abstracts 2015, no. 1 (December 2015): 1–4. http://dx.doi.org/10.1071/aseg2015ab243.

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24

Carneiro, Jorge Manoel Teixeira, and Luís Antônio da Rocha Dib. "O USO DA INTERNET EM SURVEYS: OPORTUNIDADES E DESAFIOS." Administração: Ensino e Pesquisa 12, no. 4 (December 31, 2011): 641. http://dx.doi.org/10.13058/raep.2011.v12n4.146.

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Este artigo discute o uso da Internet nas pesquisas de levantamento de dados (surveys), tratando das questões que são exclusivas deste meio e daquelas comuns a outros ambientes de pesquisa, mas que apresentam particularidades quando no ambiente online. Inicialmente discutem-se quatro tipos de erros, que costumam estar presentes em surveys – erros de cobertura, amostragem, não resposta e mensuração – e quais as causas e manifestações específicas destes no ambiente online, bem como as formas de se lidar com eles. Em seguida, discute-se o impacto do formato do questionário sobre a qualidade das respostas. Questões éticas como a garantia de confidencialidade e de anonimato são abordadas. Este material poderá ser útil a pesquisadores brasileiros – que poderão tirar proveito das potencialidades do novo meio ao mesmo tempo em que evitam suas “armadilhas” – uma vez que reúne um conjunto de orientações conceituais e práticas para o uso de web surveys que, de outra forma, somente se encontram disponíveis em diversos trabalhos isolados ou em extensos textos.

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Dalan, Rinita A. "Defining archaeological features with electromagnetic surveys at the Cahokia Mounds State Historic Site." GEOPHYSICS 56, no. 8 (August 1991): 1280–87. http://dx.doi.org/10.1190/1.1443150.

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Electromagnetic (EM) surveys have been used at the Cahokia Mounds State Historic Site in southwestern Illinois to locate and define a number of buried archaeological features. Two instruments, Geonics EM31-D and EM38 conductivity meters, were employed to locate portions of a wooden stockade known as the Central Palisade; delineate a number of leveled earthen mounds; and explore a broad, flat area in the central portion of the site known as the Grand Plaza. EM surveys, together with limited excavation, provide a cost effective and nondestructive means of exploring a site as large and complex as Cahokia. Archaeological excavations confirmed that EM surveys were able to locate the Central Palisade, and more importantly, that they provided information on anthropogenically modified terrain within the Grand Plaza. The EM survey documented buried ridge and swale topography and borrow pits within this area. This evidence of landscape modification challenges previous conceptions about the extent of earthmoving at this important Mississippian center and suggests a promising area of application for EM surveys in archaeology.

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Chi, Nguyen Minh, Vu Dinh Huong, Duy Long Pham, Le Van Binh, Nguyen Van Luu, Kieu Manh Ha, Vu Van Loi, and Roman V. Yakovlev. "Neurozerra conferta (Lepidoptera: Cossidae) damaging Melaleuca plantations in Vietnam and its biological control." Ecologica Montenegrina 60 (December 9, 2022): 13–24. http://dx.doi.org/10.37828/em.2022.60.3.

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Melaleuca leucadendra and M. cajuputi are grown widely in Vietnam, with plantation areas in 2020 of 32,000 ha and 36,000 ha respectively. A stem borer, Neurozerra conferta (Walker) (Lepidoptera: Cossidae), has significantly damaged plantations of both species. Field surveys in 2021 found N. conferta damage to M. leucadendra in the four provinces of Ninh Binh, Long An, Dong Thap and Kien Giang with a damage incidence (P%, percentage of plants attacked) of 22.4–33.2% and an average damage index (DI) of 0.77–1.01. In Long An province, surveys in 2022 found frequent damage to M. leucadendra plantations at the age of 2–3 years with P% ranging from 22.7 to 27.3% and DI from 0.46 to 0.54. Beauveria bassiana and Metarhizium anisopliae were identified as potential biological agents with control effectiveness of 59.6–63.3%. Screening to identify resistant varieties of M. leucadendra and development of an integrated pest management strategy for N. conferta are recommended.

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Santos, Sueyla Ferreira da Silva dos, Ismael Forte Freitas Júnior, Ana Maria Alvarenga, Silvio Aparecido Fonseca, Jair Sindra Virtuoso Junior, and Thiago Ferreira de Sousa. "Prevalência e fatores associados à prática de atividades físicas no lazer: inquérito repetido em estudantes universitários." Brazilian Journal of Kinanthropometry and Human Performance 18, no. 5 (December 20, 2016): 577. http://dx.doi.org/10.5007/1980-0037.2016v18n5p577.

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DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n5p577 The practice of leisure physical activity represents a behavior that must be monitored in different population groups. The objectives of this study were i) to compare the prevalence of leisure-time physical activity in university students along the survey years in three separate years; ii) to analyze the factors associated with practice of leisure time physical activity in each survey. Three surveys in a college institution in northeastern Brazil in 2010, 2012 and 2014 were carried out. The dependent variable was practice of leisure-time physical activity. Exploratory variables were sociodemographic factors and link with the university. The prevalence was compared using the chi-square test for linear trend and association for Prevalence Ratio. Participation was of 1,084, 1,085 and 1,041 college students in 2010, 2012 and 2014, respectively. The prevalence of leisure-time physical activity was approximately 50% in the three surveys. Women were less active in leisure time on the three surveys. In each survey, associations were different in relation the courses, and Chemistry – teacher training, Computer Science, Pedagogy – teacher training and Linguistics (no specialization) students showed lower levels of leisure-time physical activity and Biomedicine, Geography – Bachelor, Physical Education – teacher training and Geography – teacher training students were more active in leisure time. It was concluded that there was a stabilization of the prevalence of active leisure over time and that women showed lower prevalence of leisure-time physical activity in the three surveys.

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Moruzzi, Trina L., Kimberly J. Royar, Clayton Grove, Robert T. Brooks, Christopher Bernier, Frank L. Thompson, Richard M. DeGraaf, and Todd K. Fuller. "Assessing an American Marten, Martes americana, Reintroduction in Vermont." Canadian Field-Naturalist 117, no. 2 (April 1, 2003): 190. http://dx.doi.org/10.22621/cfn.v117i2.681.

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During October-December 1989-1991, biologists from the Vermont Fish and Wildlife Department and the USDA Forest Service reintroduced 115 (88 male, 27 female) American Martens (Martes americana) into the southern half of the Green Mountain National Forest. During the years of release, brief radio-contact was made with 9 of the 13 (8 male, 5 female) radiocollared animals, and several of these may have established residency. Results of winter track count surveys suggested the presence of at least four Martens in 1990. During winter 1994-1995, Trailmaster® cameras and boxed camera systems detected Martens at two, and Fishers (Martes pennanti) at 11, of 20 sites. During winter 1997-1998, Fishers were detected at 37 of 47 boxed camera sites, but no Martens were detected. During summer 1997 and 1998, no Marten photos were recorded at 285 pressure-plate camera stations in a larger area that included all Marten release sites. Although post-release monitoring may have been insufficient to definitively confirm Marten presence, results from the 1997 and 1998 camera surveys indicate that a viable population of Martens was not established in southern Vermont, perhaps due to competition with Fishers.

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PANSARIN, EMERSON R., SAMANTHA G. AUGUSTO, and ALESSANDRO W. C. FERREIRA. "Resurrection of Liparis inundata (Orchidaceae)." Phytotaxa 441, no. 3 (May 5, 2020): 294–300. http://dx.doi.org/10.11646/phytotaxa.441.3.6.

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Up until now, three species of Liparis were recognized in Brazil. During floristic surveys of the orchid family in Brazil, populations of a Liparis species occurring in marshy areas were found. Based on our investigations we conclude that it is the rare L. inundata, a taxon currently considered to be a synonym of L. nervosa. Morphological, phenological and ecological evidence is provided for the recognition of L. inundata as a species distinct from L. nervosa. In addition, the original illustration of Barbosa Rodrigues is designated as the lectotype of L. inundata.

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Warkentin, Ian G., Christine E. Campbell, Kristin G. Powell, and Tina D. Leonard. "First Record of Mink Frog, Rana septentrionalis, from Insular Newfoundland." Canadian Field-Naturalist 117, no. 3 (July 1, 2003): 477. http://dx.doi.org/10.22621/cfn.v117i3.813.

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Two populations of the Mink Frog (Rana septentrionalis) were identified near Corner Brook Newfoundland during wider surveys for anurans on the west coast of the island. This brings to six the number of anuran species which are known to have been introduced to insular Newfoundland, with four known to be currently extant.

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Chaulk, Keith G. "Suspected Long-Term Population Increases in Common Eiders, Somateria mollissima, on the Mid-Labrador Coast, 1980, 1994, and 2006." Canadian Field-Naturalist 123, no. 4 (October 1, 2009): 304. http://dx.doi.org/10.22621/cfn.v123i4.998.

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Aerial surveys for adult male Common Eiders, Somateria mollissima, were flown on the Labrador coast during June 2006. This information was then compared with aerial counts of adult male Common Eiders collected in 1980 and 1994. For each survey year, data were grouped and paired by coastal block and were analyzed for population trends. Overall, the observed counts of adult male Common Eiders increased by 244% between 1980 and 2006. Much of this increase seemed to occur in the southern region of the study area.

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Robson, Diana Bizecki. "Rarity Status Assessments of Bugseeds (Amaranthaceae: Corispermum) in Manitoba." Canadian Field-Naturalist 125, no. 4 (August 13, 2012): 338. http://dx.doi.org/10.22621/cfn.v125i4.1262.

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To provide a more accurate assessment of the rarity of the plant genus Corispermum (Amaranthaceae), commonly known as bugseeds, in Manitoba, I undertook a survey of all historical populations. In total, 68 quarter sections were selected for presence/absence surveys; 37 of them contained at least one species of bugseed. Only 10 of the 20 historical populations in Manitoba were relocated. The total estimated size of known bugseed populations in Manitoba in 2010-2011 was approximately 9,820 to 13,060 individuals. American Bugseed (C. americanum (Nutt.) Nutt. var. americanum) is the most abundant and widespread of the bugseeds in Manitoba, followed by Hairy Bugseed (C. villosum Rydb.). There is only one population of Hooker’s Bugseed (C. hookeri Mosyakin var. hookeri) in the province. Pallas’ Bugseed (C. pallasii Steven) was not relocated and should probably be considered extirpated in Manitoba. The habitats at 61% of the localities where bugseeds were confirmed are anthropogenically disturbed, the most common habitat being roadsides with exposed bare sand. Of the localities where bugseeds were not relocated, 67% occurred in natural sandy areas, suggesting that dune stabilization is a major threat to the continuing persistence of these species.

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DAHINTEN-BAILEY, HELLEN, MARCELO J. SERRANO, MARGARITA ALONSO-ASCENCIO, JOSE J. CRUZ-FONT, ISABELLA ROSITO-PRADO, KENNEDY J. A. RUIZ-VILLANUEVA, CARLOS VÁSQUEZ-ALMAZAN, and DANIEL ARIANO-SÁNCHEZ. "A new species of Bolitoglossa (Caudata: Plethodontidae) of the Bolitoglossa franklini group from an isolated cloud forest in northern Guatemala." Zootaxa 4966, no. 2 (May 3, 2021): 202–14. http://dx.doi.org/10.11646/zootaxa.4966.2.7.

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We describe Bolitoglossa qeqom sp. nov. from an isolated cloud forest in Cerro Guachmalén, Alta Verapaz, Guatemala, based on multiple lines of evidence (morphological, molecular, and biogeographic data). This region comprises a mountain ridge without previous herpetological surveys. The new species is a large salamander with uniform purplish-black coloration and is distinguished by having relatively long legs with only one costal groove between adpressed limbs, numerous maxillary teeth, few vomerine teeth, only one phalange free of webbing in digit III of feet, and a relatively short tail. It is geographically closest to its sister clade of B. lincolni + B. franklini and the xeric Chixoy river canyon appears to be the major biogeographic barrier that isolated the new taxon. The cloud forest inhabited by this species has undergone severe habitat destruction in the region and land conservation actions are urgent.

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Flanagan, Melissa, Vanessa Roy-McDougall, Graham Forbes, and Glen Forbes. "Survey methodology for the detection of Wood Turtles (Glyptemys insculpta)." Canadian Field-Naturalist 127, no. 3 (December 3, 2013): 216. http://dx.doi.org/10.22621/cfn.v127i3.1486.

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Wood Turtles (Glyptemys insculpta) are difficult to survey because their use of aquatic and terrestrial environments varies spatio-temporally. Existing survey methodology is highly variable and typically involves searching for Wood Turtles within water and on land 0 to >20 m from the shoreline from spring to autumn. The mobility of Wood Turtles suggests that detection is likely influenced by distance surveyed from water and the amount of vegetation, which varies by season. To determine an ideal survey methodology for the Wood Turtle, we recorded distances from a waterway of 31 radio-tagged turtles at Canadian Forces Base, Gagetown, New Brunswick, in 2003 and 2004. Ordinal logistic regression was used to determine the probability of finding male or female Wood Turtles with increasing distance from water at different times of day or season. Sex and time of day were not significant factors in detecting Wood Turtles. Season was a significant factor, with highest probability (69%) of finding Wood Turtles at a distance of 0–10 m of a waterway up to July 1 (corresponding to pre-nesting and nesting periods), compared to probabilities of <10% for any 10-m distance between 10 m and 50 m from a waterway. After July 1, the highest detection probability (50%) was at distances greater than 50 m from a waterway. We recommend that Wood Turtle surveys for environmental impact assessments and population monitoring be conducted on warm days (i.e., 10–25°C) within 10 m of waterways up to July 1.

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Jung, Thomas S., Brian G. Slough, David W. Nagorsen, and Piia M. Kukka. "New records of the Ogilvie Mountains Collared Lemming (Dicrostonyx nunatakensis) in central Yukon." Canadian Field-Naturalist 128, no. 3 (October 16, 2014): 265. http://dx.doi.org/10.22621/cfn.v128i3.1605.

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The Ogilvie Mountain Collared Lemming (Dicrostonyx nunatakensis Youngman, 1967), reported only from the Ogilvie Mountains of central Yukon, is among the least known mammals in Canada. It was first discovered in 1961 and, since then, only 13 specimens had been collected, all from one mountain, in central Yukon. We conducted a targeted survey to determine the distribution of the species by trapping areas of apparently suitable habitat on 12 mountains within 40 km of the known location. Many of our traps were disabled by other mammals; however, we captured three Ogilvie Mountain Collared Lemmings on two mountains 25.9 km and 29.6 km from the original location. Our findings suggest that this lemming may be more widely distributed than indicated by earlier specimens. We suggest further surveys to delineate the range of the Ogilvie Mountain Collared Lemming.

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Noel, Lynn E., Stephen R. Johnson, and Gillian M. O'Doherty. "Long-tailed Duck, Clangula hyemalis, Eider, Somateria spp., and Scoter, Melanitta spp., Distributions in Central Alaska Beaufort Sea Lagoons, 1999-2002." Canadian Field-Naturalist 119, no. 2 (April 1, 2005): 181. http://dx.doi.org/10.22621/cfn.v119i2.103.

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During July and August 1999–2002, distributions of Long-tailed Ducks (Clangula hyemalis), eiders (Somateria spp.) and scoters (Melanitta spp.) were documented in three barrier island-lagoon systems in the central Alaska Beaufort Sea. Concentration areas for each species were determined during 16 aerial surveys. Kernel density procedures were used to delineate 75% and 50% “activity” or concentration areas for all three species. Long-tailed Ducks were 13 times more numerous than eiders and 38 times more numerous than scoters. The Long-tailed Duck 75% activity area encompassed all three lagoon systems and was three times as large as the eider activity area and one-third larger than the scoter activity area. Eider activity areas were located only in the eastern lagoon, and scoter activity areas were located only in the western lagoon. Density contours showed patterns of repeated habitat use for sea ducks over the four years of sampling and improve our understanding of sea duck habitat use within Beaufort Sea barrier island-lagoon habitats.

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Henkel, Karl, and Jimnah De Almeida. "A imaginabilidade visual de itens nas perguntas de pesquisas de opinião em comunicação política." Comunicação & Sociedade 43, no. 3 (March 16, 2022): 111–35. http://dx.doi.org/10.15603/2175-7755/cs.v43n3p111-135.

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O presente trabalho visa identificar analisar o viés psicolinguístico da imaginabilidade visual no momento da escolha dos itens discursivos apresentados sequencialmente numa pergunta fechada com mensuração da resposta em escala nominal durante pesquisas de opinião com surveys. Aplicou-se um teste psicométrico para medir o grau da imaginabilidade visual dos itens. Os dados foram correlatos com as frequências dos respectivos itens levantados por meio de um survey para constituir um poll, representando um desenho metodológico pré-teste no nível experimental e pós-teste com survey real. Embora exista uma alta correlação entre a imaginabilidade visual e a escolha do item, o resultado supõe ser esta uma relação espúria devido à complexibilidade de múltiplas dimensões entre aspectos linguísticos, experimentais e comportamentais do entrevistado em surveys no momento da escolha do item. A escolha simples de resposta com a opção de somente um item entre vários elimina alguns efeitos psicolinguísticos, mas não o efeito da imaginabilidade visual do item.Palavras-chave: Efeito imaginabilidade visual, Pesquisa de opinião pública, Demoscopia, Survey, Bias psicolinguísticas, Escolha do item.

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Karaouzas, Ioannis, Andrzej Zawal, Grzegorz Michoński, and Vladimir Pešić. "CONTRIBUTION TO THE KNOWLEDGE OF THE CADDISFLY FAUNA OF MONTENEGRO – NEW DATA AND RECORDS FROM THE KARSTIC SPRINGS OF LAKE SKADAR BASIN." Ecologica Montenegrina 22 (July 6, 2019): 34–39. http://dx.doi.org/10.37828/em.2019.22.3.

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Caddisfly larvae were collected in 11 karstic springs located in Lake Skadar drainage basin in the Mediterranean part of Montenegro on May and June 2018. Three species are new records for the caddisfly fauna of Montenegro: Brachycentrus subnubilus, Lepidostoma hirtum, Triaenodes ochreellus lefkas. One is a confirmed record of a previously thought absent species Thremma anomalum. Future caddisfly surveys in the region will contribute significantly to the partially known Trichoptera fauna of Montenegro.

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Kratzer, Terence, James Macnae, and Paul Mutton. "Detection and correction of SPM effects in airborne EM surveys." Exploration Geophysics 44, no. 1 (March 2013): 6–15. http://dx.doi.org/10.1071/eg12048.

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Yoon, Daeung, and Michael S. Zhdanov. "Optimal Synthetic Aperture Method for Marine Controlled-Source EM Surveys." IEEE Geoscience and Remote Sensing Letters 12, no. 2 (February 2015): 414–18. http://dx.doi.org/10.1109/lgrs.2014.2345416.

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Rouzes, Raphaël, Lionel Delbac, Marie-Laure Ravidat, and Denis Thiéry. "First occurrence of Drosophila suzukii in the Sauternes vineyards." OENO One 46, no. 2 (June 30, 2012): 145. http://dx.doi.org/10.20870/oeno-one.2012.46.2.1513.

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Aim: The present work reports the detection of a new fruit fly species in Sauternes vineyards (Aquitaine region, France): Drosophila suzukii.Methods and results: Drosophila were collected in two Sauternes vineyards, at the beginning of the harvest time in 2011, using food traps with apple molasses baits. The surveys led to the detection of the invasive species D. suzukii. In addition, rotting bunches were randomly taken in each vineyard but no D. suzukii emerged from them. The Drosophila community found in traps and on bunches was dominated by D.melanogaster.Conclusion: D. suzukii, although present in the vineyard agroecosystem of Sauternes, did not cause any noticeable damage in 2011. However, population monitoring should be continued.Significance and impact of the study: This first occurrence report of the invasive species D. suzukii in the Bordeaux vineyard should motivate further surveys of this potential pest of green berries.

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OLIVER, PAUL M., CHRIS J. JOLLY, PHILLIP L. SKIPWITH, LEONARDO G. TEDESCHI, and GRAEME R. GILLESPIE. "A new velvet gecko (Oedura: Diplodactylidae) from Groote Eylandt, Northern Territory." Zootaxa 4779, no. 3 (May 20, 2020): 438–50. http://dx.doi.org/10.11646/zootaxa.4779.3.10.

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Over the last decade, the combination of biological surveys, genetic diversity assessments and systematic research has revealed a growing number of previously unrecognised vertebrate species endemic to the Australian Monsoonal Tropics. Here we describe a new species of saxicoline velvet gecko in the Oedura marmorata complex from Groote Eylandt, a large island off the eastern edge of the Top End region of the Northern Territory. Oedura nesos sp. nov. differs from all congeners in combination of moderate size, and aspects of tail morphology and colouration. It has not been reported from the nearby mainland regions (eastern Arnhem Land) suggesting it may be an insular endemic, although further survey work is required to confirm this. While Groote Eylandt is recognised as a contemporary ecological refuge for declining mammal species of northern Australia, newly detected endemic species suggest it may also be of significance as an evolutionary refuge for many taxa, especially those associated with sandstone escarpments.

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Glöer, Peter, Youness Mabrouki, and Abdelkhaleq Fouzi Taybi. "Two new valvatoid genera (Gastropoda, Hydrobiidae) from Morocco." Ecologica Montenegrina 30 (April 23, 2020): 124–28. http://dx.doi.org/10.37828/em.2020.30.12.

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Recent field surveys conducted on the Middle Atlas of Morocco have led to the discovery of two new species belonging to two new genera (Ifrania n. gen. and Fessia n. gen.) described here. Photos of the holotypes are presented in addition to the penis morphology of the new genera, the map of the sampling area with the type localities and the habitat description. Ongoing investigations will possibly reveal more new genera and species from the country.

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Palero, Ferran, Hector Torrado, Orly Perry, Elena Kupriyanova, Aylin Ulman, Rebeca Genis-Armero, Harry A. Ten Hove, and Romana Capaccioni-Azzati. "Following the Phoenician example: western Mediterranean colonization by Spirobranchus cf. tetraceros (Annelida: Serpulidae)." Scientia Marina 84, no. 1 (March 3, 2020): 83. http://dx.doi.org/10.3989/scimar.04976.20a.

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A newly established population of the fouling polychaete Spirobranchus cf. tetraceros is reported from the western Mediterranean (Valencia Port). Despite previous intensive surveys, this is the first record for the taxon in the Iberian Peninsula. Molecular analyses revealed that S. cf. tetraceros from Valencia are genetically identical to specimens from Heraklion, Crete, but different from those collected in the Red Sea and S. tetraceros sensu stricto from the type locality in Australia. Mediterranean and Red Sea S. cf. tetraceros form a well-supported monophyletic clade but are clearly distinct from New South Wales specimens of S. tetraceros. Our new molecular evidence supports the hypothesis that S. tetraceros is not a global invader of Australian origin but rather a large species complex in need of a comprehensive worldwide revision. These results highlight the importance of integrative taxonomic research for species with reported global distributions because these taxa may include cryptic invaders. An illustrated morphological account of the Valencia and Heraklion specimens and a taxonomic key for Spirobranchus species in the Mediterranean Sea are provided.

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Lavrova, Olga Yu, Ksenia R. Nazirova, Evgeny V. Krayushkin, and Alexey Ya Strochkov. "Concurrent Field Experiments and Satellite Surveys for Assessing Environmental Risk in the Coastal Zone of Southeast Baltic." Ecologica Montenegrina 25 (November 8, 2019): 44–54. http://dx.doi.org/10.37828/em.2019.25.5.

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The results of field experiments concurrent to satellite surveys conducted in the summer periods of 2014-2019 in the southeastern part of the Baltic Sea off Sambian Peninsula are presented. The main goal was to study coastal currents in a highly variable wind field and its impact on the transport of potential marine pollution. Southeast Baltic is, on the one hand, an area of active navigation, fishing, off-shore oil production, and, on the other hand, a rapidly developing recreation area. It is also an area of frequent massive blooming of harmful algae. Considering these facts, studying coastal currents and their impact on antropogenic and biogenic pollution propagation in the area is highly important. Our main research instrument was drifting Lagrangian buoys (mini-drifters) that are quite often used in oceanography today, Acoustic Doppler Current Profiler (ADCP) and CTD probe measuring temperature, conductivity (salinity) and pressure (depth) and in-situ turbidity and CHL-a In addition, we used satellite remote sensing data publicly available from European and American databases. Mainly, these were data obtained from Sentinel-2 (MSI), Landsat-8 (OLI/TIRS), Sentinel-3 (OLCI) and MODIS (Aqua/Terra) satellites. The experimental data allowed us to describe in detail the alongshore current structure and identify the areas most affected by marine pollution, among which are the most popular places of the region: the beaches of the Yantarniy settlement and Curonian Spit, a national nature reserve and a UNESCO World Heritage Site.

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SUKKHARAK, PHIANGPHAK, and SAHUT CHANTANAORRAPINT. "The liverwort genus Metzgeria (Metzgeriaceae, Marchantiophyta) in Thailand." Phytotaxa 441, no. 3 (May 5, 2020): 251–62. http://dx.doi.org/10.11646/phytotaxa.441.3.2.

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The taxonomic account of the genus Metzgeria in Thailand is presented based on herbarium specimens and recent collections from field surveys. Five species of Metzgeria including M. consanguinea, M. furcata, M. kinabaluensis, M. leptoneura, and M. lindbergii are recognized. Of these, M. kinabaluensis is newly reported to Thailand. A key to the species, descriptions and illustrations of each species are provided. Ecology and geographical distribution of the species are noted. In addition, M. pubescens is excluded from the country.

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Kratzer, Terence, and James C. Macnae. "Induced polarization in airborne EM." GEOPHYSICS 77, no. 5 (September 1, 2012): E317—E327. http://dx.doi.org/10.1190/geo2011-0492.1.

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A major impediment in the path toward airborne induced polarization (IP) is an effective method to quantify data from inductive sources, such as those used in airborne electromagnetic systems. We modeled inductive IP using a combination of Warburg and exponential decay models as a basis for fitting electromagnetic data from ground time-domain electromagnetic (TEM) and airborne versatile TEM (VTEM) surveys. Observed decays were deconvolved into electromagnetic and IP constituents by constrained least-squares fitting of basis functions modified to account for transmitter waveforms. The method was confirmed through synthetic modeling of 2D and 3D structures, and when applied to ground TEM or airborne TEM data, obtained an estimate of apparent chargeability at each station or fiducial. In the case of a VTEM survey in Africa, the apparent chargeabilities mapped graphitic sediments and provided spatially consistent indications of clay concentrations. A limitation on this airborne IP for airborne applications is motion noise, which places a lower limit on usable base frequency and begins to significantly affect the signal at the later delay times, when IP effects are most visible.

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Hansen, Donald J. "Observations of Habitat Use by Polar Bears, Ursus maritimus, in the Alaskan Beaufort, Chukchi, and Northern Bering Seas." Canadian Field-Naturalist 118, no. 3 (July 1, 2004): 395. http://dx.doi.org/10.22621/cfn.v118i3.12.

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A total of 1112 Polar Bears (Ursus maritimus) at 482 sightings were recorded during aerial surveys in the Beaufort, Chukchi, and northern Bering Seas conducted primarily during September and October from 1979-1999. Of these bears, 784 were observed offshore at 400 sightings. The surveys were conducted by the Naval Ocean Systems Center and Minerals Management Service; they were designed to monitor the fall Bowhead Whale (Balaena mysticetus) migration. Over the 20-year period, 1,096,620 kilometers of surveys were flown. The majority of the offshore Polar Bears, 595 bears at 290 sightings, and most of the kill sites and polar bear tracks were recorded in 80-100% ice cover. The number of bears per kilometer increased substantially in >24% ice cover, with the highest number observed in 80-100% ice cover. This habitat use probably is related to the availability of seals, their primary prey. There were 328 bears (83 sightings) recorded on land, and most of them were associated with whale carcasses and bowhead whale subsistence harvest sites along the Alaskan Beaufort Sea coast.

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GRISMER, L. LEE, PLATON V. YUSHCHENKO, PARINYA PAWANGKHANANT, MALI NAIDUANGCHAN, ROMAN A. NAZAROV, VALENTINA F. ORLOVA, CHATMONGKON SUWANNAPOOM, and NIKOLAY A. POYARKOV. "A new species of Hemiphyllodactylus Bleeker (Squamata; Gekkonidae) from Peninsular Thailand that converges in morphology and color pattern on Pseudogekko smaragdinus (Taylor) from the Philippines." Zootaxa 4816, no. 2 (July 16, 2020): 171–90. http://dx.doi.org/10.11646/zootaxa.4816.2.2.

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An integrative taxonomic analysis of newly discovered populations of Hemiphyllodactylus from Indochina recovered a new species from Peninsular Thailand and two others from Laos. The new Thai species, Hemiphyllodactylus pardalis sp. nov. described herein, is the sister species to all other species in the newly designated Indochina clade and has a unique spotted contrasting dorsal pattern not seen in any other species of Hemiphyllodactylus. This, along with its elongate and gracile body morphology, renders it remarkably convergent on the Philippine gecko Pseudogekko smaragdinus despite the fact it is deeply nested within Hemiphyllodactylus. The description of this new species underscores the depauperate nature of Hemiphyllodactylus diversity throughout Indochina in general and Thailand in particular compared to neighboring upland areas of Myanmar and Peninsular Malaysia. This especially underscores the need for continued herpetofaunal field surveys in montane areas of western Thailand.

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BRANTLEY, CHERYL A. "A new species of Poecilochaetus (Polychaeta: Poecilochaetidae) from coastal waters off Southern California, USA." Zoosymposia 2, no. 1 (August 31, 2009): 81–89. http://dx.doi.org/10.11646/zoosymposia.2.1.8.

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A new species of Poecilochaetus (Polychaeta: Poecilochaetidae) is described from coastal waters off Southern California. Much of the material was collected as part of the benthic infaunal survey work carried out by the Sanitation Districts of Los Angeles County as part of their ocean monitoring program. Numerous specimens of this new species have also been collected throughout the Southern California Bight during U.S. Environmental Protection Agency (EPA) regional surveys in 1994, 1998, and 2003. The distinct characters of this new species were first noted three decades ago, but a formal description was never published. These specimens have been reported frequently in survey data under the provisional name Poecilochaetus sp. A. The number of branchial filaments, the location of these filaments along the body, and the absence of a middorsal chitinous plate on setiger 9 make Poecilochaetus martini sp. nov. unique. This new species also has elongated interramal papillae on the branchiate setigers, a character only recently noted. P. martini sp. nov. is compared to other branchiate species in the genus that also have interramal structures.

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Journal articles on the topic 'EM surveys'

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