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Relevant bibliographies by topics / Species observations

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Academic literature on the topic 'Species observations'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Species observations"

1

Berndt, Reinhard. "New species, reports and observations on rust fungi." Nova Hedwigia 75, no. 3-4 (2002): 415–31. http://dx.doi.org/10.1127/0029-5035/2002/0075-0415.

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Cubilla R, Jan A. "SEABIRDS OFF THE PACIFIC COAST OF PANAMA." Tecnociencia 26, no. 2 (2024): 173–95. http://dx.doi.org/10.48204/j.tecno.v26n2.a5412.

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Little information has been added to our knowledge of Panama’s Pacific coast seabirds since the last century. In order to increase and update our knowledge, systematic observations were made of seabirds on a total of 20 trips, conducted in 2010, then every year from 2012-2019 off the Pacific coast of Panama, and the percentage of all 1-hour observation periods during which each species was recorded according to location (continental shelf or continental slope/deep waters) and season (dry or wet) was calculated. Thirthy-nine species of seabirds of 11 different families during 120 1-hour observa

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Schermer, Maarten, and Laurens Hogeweg. "Supporting citizen scientists with automatic species identification using deep learning image recognition models." Biodiversity Information Science and Standards 2 (May 17, 2018): e25268. https://doi.org/10.3897/biss.2.25268.

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Volunteers, researchers and citizen scientists are important contributors to observation and monitoring databases. Their contributions thus become part of a global digital data pool, that forms the basis for important and powerful tools for conservation, research, education and policy. With the data contributed by citizen scientists also come concerns about data completeness and quality. For data generated by citizen scientists taxonomic bias effects, where certain species (groups) are underrepresented in observations, are even stronger than for professionally collected data. Identification to

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Hyman, Alan. ""New" species observations for Bundanoon, NSW." Metamorphosis Australia : magazine of the Butterfly & Other Invertebrates Club 80 (March 2016): 19. https://doi.org/10.5962/p.420063.

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Piper, Cameron, Kiana Elliott, and Nakaila Wengreen. "Interspecies Feeding and Defense of Lewis’s Woodpecker by Female Western Tanager." Western Birds 56, no. 1 (2025): 57–59. https://doi.org/10.21199/wb56.1.5.

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Interspecific help caring for young is an uncommon behavior in birds. Observations of an individual of one species caring for young in the nest of another typically entail species with the same nest type. Our observation of a female Western Tanager (Piranga ludoviciana) guarding and feeding a Lewis’s Woodpecker (Melanerpes lewis) nestling adds to the meager body of observations of interspecies parental care for species with differing nest types.

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Schermer, Maarten, and Laurens Hogeweg. "Supporting citizen scientists with automatic species identification using deep learning image recognition models." Biodiversity Information Science and Standards 2 (May 17, 2018): e25268. http://dx.doi.org/10.3897/biss.2.25268.

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Volunteers, researchers and citizen scientists are important contributors to observation and monitoring databases. Their contributions thus become part of a global digital data pool, that forms the basis for important and powerful tools for conservation, research, education and policy. With the data contributed by citizen scientists also come concerns about data completeness and quality. For data generated by citizen scientists taxonomic bias effects, where certain species (groups) are underrepresented in observations, are even stronger than for professionally collected data. Identification to

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Peterson, Charles, and Patrick Giltz. "Reviewing Observations for the Idaho Amphibian and Reptile iNaturalist Project For Improved Data Quality." Biodiversity Information Science and Standards 6 (September 19, 2022): e95052. https://doi.org/10.3897/biss.6.95052.

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Data on the occurrence and distribution of amphibians and reptiles are needed to identify and address conservation problems for these species. Observations from crowd-sourced/citizen science projects are an important source of data for conservation and management. Crowdsourced data such as iNaturalist observations have several strengths, including large amounts of recent data over a broad area, low cost, accurate spatial coordinates, photo vouchers or sound recordings that allow identification confirmation, and public education and engagement. The goal of this project is to increase and improv

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Cahyono, Heru, and Haris Eka Pramudhita. "OBSERVATION REPORT OF THE ENDEMIC CHESTNUT-BELLIED HILL-PARTRIDGE (Arborophila javanica lawuana) IN TAHURA RADEN SOERJO, EAST JAVA." KnE Life Sciences 2, no. 1 (2015): 552. http://dx.doi.org/10.18502/kls.v2i1.215.

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<p>Chestnut-bellied Hill-Partridge (Arborophila javanica) is an endemic species of Java, and also one of four endemic partridge species in the Greater Sunda islands. This species is constituted by three subspecies which differ in the color pattern of their head. The first reported sighting of Chestnut-bellied Hill-Partridge (Arborophila javanica lawuana) in Cangar is by Nijman in 2003, and for these past ten years the observation data has been inadequately obtained by local birdwatchers although its call is remarkable ; the call might be frequently heard by birdwatchers but got missed. S

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9

Berndt, Reinhard. "Neotropical Rust Fungi: New Species and Observations." Mycologia 91, no. 6 (1999): 1045. http://dx.doi.org/10.2307/3761636.

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Piercy, S. E. "OBSERVATIONS ON THE TYPE SPECIES MYCOPLASMA MYCOIDES." Annals of the New York Academy of Sciences 79, no. 10 (2006): 665–69. http://dx.doi.org/10.1111/j.1749-6632.1960.tb42740.x.

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Dissertations / Theses on the topic "Species observations"

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Rajapakse, Rajapakse Gamaralalage Anura Sirimevan. "Observations on anthracnose of chilli pepper (Capsicum annuum L.) caused by Colletotrichum species in Sri Lanka." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300475.

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Van, Rensburg Sue Janse. "The effect of smoke teatment on the germination on four species of Mesembryanthemum: some preliminary observations." Thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/25934.

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Janse, van Rensburg Sue. "The effect of smoke teatment on the germination on four species of Mesembryanthemum: some preliminary observations." Bachelor's thesis, Faculty of Science, 2020. http://hdl.handle.net/11427/32419.

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The effect of plant derived smoke on germination, extent of eosine dye penetration and amount of abscisic acid (ABA) in the seeds of two Karoo non-fire-prone species: Ruschia caroli and Drosanthemum speciosum, and two fynbos fire-prone species: R. macowanii and D. stokoei, of Mesembryanthemum were investigated. The seed coat characteristics of each species were also investigated. Pierce et al. (1995) found that smoke promotes seed germination in the Karoo species R. caroli (scarified) and D. speciosum, whereas smoke has no effect on the germination of R. macowanii and D. stokoei (fynboss speci

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Holmes, Mary Jane. "Phenology and observations on the morphology, cytology and life history of species of Porphyra (Bangiales, Rhodophyta) from Britain." Thesis, Bath Spa University, 2004. http://researchspace.bathspa.ac.uk/1451/.

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Teske, Johanna Kavanagh. "Connecting the Dots: Investigating Planet Formation and Composition Through Observations of Carbon and Oxygen Species in Stars, Disks, and Planets." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/318831.

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What physical processes and sources of material contribute to exoplanet compositions? Specifically, what roles do the protoplanetary disk composition and structure, and host star abundances play in the different stages of planet formation? In this thesis, beginning with a brief literature review in Chapter 2, I trace oxygen and carbon species through these stages to inform how, when, and where planets form. In Chapter 3 I describe a study of the molecular emission from the warm inner disks of T Tauri stars, where terrestrial planets likely form. I report moderate correlations between HCN emiss

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Zielcke, Johannes [Verfasser], and Ulrich [Akademischer Betreuer] Platt. "Observations of reactive bromine, iodine and chlorine species in the Arctic and Antarctic with Differential Optical Absorption Spectroscopy / Johannes Zielcke ; Betreuer: Ulrich Platt." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180499611/34.

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Zatout, Masoud Moustafa Mohamed. "The roles of exotic and native tree species in preventing desertification and enhancing degraded land restoration in the north east of Libya : reciprocal effects of environmental factors and plantation forestry on each other, assessed by observations on growth and reproductive success of relevant tree species, and environmental factors analysed using multivariate statistics." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5708.

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Today's arid and semi-arid zones of the Mediterranean are affected by desertification, resulting from various factors, including climatic variations and human activities such as overcultivation, overgrazing and deforestation. Afforestation programs are one of the most effective means in preventing desertification. For many years Libya has had afforestation programs in order to restore degraded land and in response to rapid desert encroachment in the north east of Libya, in the area called the Jabal Akhdar (Green Mountain), which has been investigated in this study. The purpose of this research

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Boschetti, Fabio [Verfasser], Kai Uwe [Gutachter] Totsche, and Christoph [Gutachter] Gerbig. "Atmospheric modeling of airborne GHG observations over Europe using a regional transport model : towards quantitative inversions using multiple species / Fabio Boschetti ; Gutachter: Kai Uwe Totsche, Christoph Gerbig." Jena : Friedrich-Schiller-Universität Jena, 2017. http://d-nb.info/1177595516/34.

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Virgili, Auriane. "Modelling distributions of rare marine species : the deep-diving cetaceans." Thesis, La Rochelle, 2018. http://www.theses.fr/2018LAROS003/document.

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Les cétacés grands plongeurs, cachalots Physeteridae et Kogiidae, et baleines à bec Zipiidae, sont des espèces marines rares. Leur faible densité, aire de distribution étendue et faible disponibilité en surface génèrent de faibles taux d’observations. Cette particularité constitue un défi pour la modélisation d’habitat de ces espèces, préalable à leur conservation. Les modèles doivent gérer l’abondance de zéros qui limitent leur capacité à inférer des résultats écologiquement cohérents. Cette thèse vise donc à trouver une méthodologie adaptée aux jeux de données abondants en zéros, à détermine

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Sorreano, Maria Claudia Mendes. "Avaliação da exigência nutricional na fase inicial do crescimento de espécies florestais nativas." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/91/91131/tde-05022007-152214/.

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O projeto tem como hipótese de trabalho que as espécies florestais tem exigências nutricionais e respostas ao stress nutricional diferenciados e que a complementação nutricional é um dos principais fatores determinantes do sucesso de projetos de recuperação florestal. Este trabalho teve como objetivo avaliar as exigências nutricionais e os efeitos da omissão de macro e micronutrientes em espécies florestais nativas de diferentes grupos sucessionais, mais usadas ou indicadas para recuperação de áreas degradadas no Estado de São Paulo. As espécies estudadas, agrupadas de acordo com o seu grupo s

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Books on the topic "Species observations"

1

E, Bowman Ray, and Northeast Fisheries Science Center (U.S.), eds. Food of northwest Atlantic fishes and two common species of squid. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northeast Region, Northeast Fisheries Science Center, 2000.

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G, Casey John, Turner Patricia A, and Northeast Fisheries Science Center (U.S.), eds. Length-length and length-weight relationships for 13 shark species from the western North Atlantic. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northeast Region, Northeast Fisheries Science Center, 1996.

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G, Casey John, Turner Patricia A, and Northeast Fisheries Science Center (U.S.), eds. Length-length and length-weight relationships for 13 shark species from the western North Atlantic. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northeast Region, Northeast Fisheries Science Center, 1996.

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4

Hassett, R. Patrick. Seasonal, vertical, and horizontal distribution of four species of copepods around Oahu, Hawaii: Data report. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, [Southwest Fisheries Science Center, 1995.

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5

F, Boatman Joey, and Air Resources Laboratory (U.S.), eds. Acid-MODES II (1990): Summary data report, NOAA King Air aircraft measurements of selected pollution species. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1992.

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Gunter, R. L. Acid-MODES II (1990): Summary data report, NOAA King Air aircraft measurements of selected pollution species. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1992.

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F, Boatman Joey, and Air Resources Laboratory (U.S.), eds. Acid-MODES II (1990): Summary data report, NOAA King Air aircraft measurements of selected pollution species. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1992.

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F, Boatman Joey, and Air Resources Laboratory (U.S.), eds. Acid-MODES II (1990): Summary data report, NOAA King Air aircraft measurements of selected pollution species. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1992.

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F, Boatman Joey, and Air Resources Laboratory (U.S.), eds. Acid-MODES II (1990): Summary data report, NOAA King Air aircraft measurements of selected pollution species. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1992.

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F, Boatman Joey, and Air Resources Laboratory (U.S.), eds. Acid-MODES II (1990): Summary data report, NOAA King Air aircraft measurements of selected pollution species. U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Air Resources Laboratory, 1992.

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Book chapters on the topic "Species observations"

1

Isagi, Yuji, and Shingo Kaneko. "Ubiquitous Genotyping for Conservation of Endangered Plant Species." In Integrative Observations and Assessments. Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54783-9_16.

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Denny, Martin. "Struggling with the Act - some observations by ecological consultants." In Threatened species legislation. Royal Zoological Society of New South Wales, 2004. http://dx.doi.org/10.7882/fs.2004.068.

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Bauhus, Jürgen, David I. Forrester, and Hans Pretzsch. "From Observations to Evidence About Effects of Mixed-Species Stands." In Mixed-Species Forests. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54553-9_2.

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Gourichon, Lionel. "Avifauna: general observations." In Klimonas. CNRS Éditions, 2024. http://dx.doi.org/10.4000/129ki.

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The avian assemblage of Klimonas (Cyprus, PPNA) comprises only 74 bones, but it shows a wide diversity with 14 taxa identified. While the Anatidae group is well represented, with at least six goose and dabbling duck species, the great bustard (Otis tarda) is the most abundant bird with 20.6% of the identified bones. Ducks and geese are mainly represented by skeletal wing parts, whereas the distal limb parts dominate for the great bustard. Most of the diurnal and nocturnal raptor remains are pedal phalanges. Except a few goose and bustard bones modified for possible use as tools or containers,

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Miyashita, Tadashi, Tatsuya Amano, and Takehisa Yamakita. "Effects of Ecosystem Diversity on Species Richness and Ecosystem Functioning and Services: A General Conceptualization." In Integrative Observations and Assessments. Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54783-9_2.

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Wiemann, Stefan. "Spatial Data Relations as a Means to Enrich Species Observations from Crowdsourcing." In Geospatial Data in a Changing World. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-33783-8_8.

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Gelder, Stuart R. "Observations on three species of branchiobdellid (Annelida: Clitellata) worms from eastern Asia." In Aquatic Oligochaeta. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3091-9_2.

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Ramos, Eric Angel, Karin L. Hartman, Robin W. Baird, Jordan K. Lerma, Fabian Missael Rodríguez-González, and Dara N. Orbach. "Drone Perspectives on Cetacean Mating and Sex." In Sex in Cetaceans. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-35651-3_11.

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AbstractMating and sociosexual behaviors of cetaceans are challenging to study in nature because most species spend only brief periods of time at the surface and most copulation and courtship occurs underwater. Recent advancements in technology have enabled a new perspective on these behaviors. Drones, or unoccupied aerial systems, have revolutionized studies of marine mammals by providing unparalleled aerial perspectives on the behaviors of whales, porpoises, and dolphins, including their use for investigating questions concerning the sexual behaviors and mating habits of species in near-surf

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Zoghlami, Aziza, and H. Hassen. "Observations on the distribution and ecology of annual Medicago species in northern Tunisia." In Genetic Resources of Mediterranean Pasture and Forage Legumes. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4776-7_20.

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Kontrovitz, Mervin. "Observations on the ontogeny of the ocular sinus in a species of Echinocythereis." In Ostracoda and Global Events. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1838-2_31.

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Conference papers on the topic "Species observations"

1

de Jong, Jan-Peter, N. Dowling, M. Sargent, Andrea Etheridge, Andrew Saunders-Tack, and William Fort. "Effect of Mercaptans and Other Organic Sulfur Species on High Temperature Corrosion in Crude and Condensate Distillation Units." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07565.

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Abstract Measured corrosion rates of carbon, low alloy, and stainless steels are significantly higher than that predicted by the modified McConomy curves in cases where significant concentrations of mercaptans are present in crude oils and hydrocarbon condensates. It suggested that these organic sulfur containing hydrocarbons cause higher corrosion rates than sulfur species in general. The corrosivity of four different mercaptans and selected crude oil fractions were measured in laboratory tests. It was concluded that mercaptan corrosion can contribute significantly to the total sulfur related

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Vitse, Frederic, Khairul Alam, Yves Gunaltun, Dominique Larrey de Torreben, and Pierre Duchet-Suchaux. "Semi-empirical Model for Prediction of the Top-Of-the-Line Corrosion Risk." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02245.

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Abstract A model is proposed that determines the influence of the condensation rate on the Top-of-Line Corrosion (TLC) under dewing conditions. The model is based on an analytical and numerical solution of the flow field in the falling film of the condensate. A numerical solution is then used to compute the mass transfer by convection and diffusion of the dissolved species. At the wall, the boundary conditions are given by empirical equations for the corrosion rate. The numerical solutions are compared with data from the field observations.

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Kahyarian, Aria, Bruce Brown, and Srdjan Nesic. "Fundamental Mechanisms of Mild Steel Corrosion in H2S Containing Environments." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-12875.

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Abstract The current understanding of the corrosion mechanisms in H2S containing environments is based on the direct electrochemical reduction of H2S as the main contribution of this species to the corrosion process. Such an argument has been developed based on the distinctive behavior of cathodic polarization curves in H2S containing solutions, as compared to the behavior observed in the solutions of strong acids or those in presence of other weak acids such as carboxylic acids and carbonic acid. The direct reduction of H2S is generally associated with the observation of a “double wave” in a

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Zhang, R., M. Gopal, and W. P. Jepson. "Development of a Mechanistic Model for Predicting Corrosion Rate in Multiphase Oil/Water/Gas Flows." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97601.

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Abstract A mechanistic model has been developed to predict corrosion rates in multiphase (water/oil/CO2) flow conditions. The model takes into account electrochemistry, reaction kinetics, and, mass transport effects. This paper describes the equations used to determine pH and bulk concentrations of various ions, which are then used to calculate the mass transfer rates to the corrosion surface. The result includes the determination of the mass transfer coefficients of various ionic species and corrosion rates. Details of relations used for determination of mass transfer coefficients for multiph

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Shifler, David A. "Factors That Influence the Performance of High-Temperature Coatings." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07420.

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Abstract High-temperature materials such as MCrAlY, aluminide, silicon-base environmental barrier, and thermal barrier coatings, as well as nickel- and cobalt-based superalloys, ceramic matrix composites, and ceramics are used in various corrosive environments. Materials that may be resistant to one environment may be susceptible in other environments. The interaction of the protective oxide of the given material changes as a function of a number of factors. The increasing desire to raise temperatures in different high-temperature applications requires a thorough understanding of those factors

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Gostin, Irina Neta. "USING SCANNING ELECTRON MICROSCOPY TECHNIQUES IN THE ANALYSIS OF STRUCTURAL DIVERSITY OF VARIOUS PLANTS ORGANS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/4.2/s19.51.

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In this paper, the applications of Scanning Electron Microscopy (SEM) in plant histology and anatomy research are highlighted. Traditionally, SEM is used in plant biology to analyze the surfaces of various vegetative and reproductive organs in order to investigate micromorphological aspects. Vegetative and reproductive organs from 12 species of angiosperms from various habitats in Romania were analyzed (Adonis vernalis L., Primula halleri J.F.Gmel., Oxytropis halleri Bunge et. Koch, Oxytropis campestris (L.) DC, Pulsatilla alpina (L.) Chaz., Gentiana acaulis L., Ranunculus montanus Willd., Dry

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Brown, Bruce. "The Likelihood of Localized Corrosion in an H2S / CO2 Environment." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05855.

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Abstract Understanding the mechanisms that lead to localized corrosion in oil and gas pipeline is of great interest to corrosion engineers worldwide. In a research program which examined corrosion under slightly sour conditions due to an H2S/CO2 environment, experimental studies were carried out to identify the environmental parameters with the most influence on the likelihood of localized corrosion. Observations of localized corrosion that occurred in slightly sour conditions in a large scale flow loop under single phase and multiphase flow were used to develop a better understanding of how b

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Anderko, A., and N. Sridhar. "Corrosion of Ni-based Alloys and Stainless Steels in Mixed Acids and Salts - Experimental and Modeling Results." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05430.

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Abstract Corrosion in process industries often occurs in mixtures of various acids and salts. Such corrosion behavior cannot be predicted simply by extrapolation from the behavior in pure acids. For example, corrosion behavior in wet process phosphoric acid is significantly different from that in pure orthophosphoric acid due to a variety of impurities in the former. Corrosion behavior in sulfuric and hydrofluoric acid mixtures is quite different from that in either of the pure acids. Acid mixtures can be broadly classified as: (1) mixtures of two non-oxidizing strong acids; (2) mixtures with

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Farina, S. B., G. S. Duffo, and J. R. Galvele. "Stress Corrosion Cracking of Zirconium and Zircaloy-4 in Iodine Containing Solutions." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02436.

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Abstract The stress corrosion cracking (SCC) susceptibility of zirconium (UNS R60702) and one of its alloys, Zircaloy-4 (UNS R60804), was studied in 10 g/L iodine dissolved in various alcohols: methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol and 1-octanol. SCC was observed in all the systems studied and the crack propagation rate was found to vary depending on the size of the solvent molecule. As the solvent molecular weight increased, the crack propagation rate decreased. Preceding crack propagation, intergranular attack was found in all the solutions tested. The intergranular corrosion

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Blake, Geoffrey. "OBSERVATIONS OF VOLATILE SPECIES IN PROTOPLANETARY DISKS." In 69th International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.rf01.

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Reports on the topic "Species observations"

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Rine, Kristin, Roger Christopherson, and Jason Ransom. Harlequin duck (Histrionicus histrionicus) occurrence and habitat selection in North Cascades National Park Service Complex, Washington. National Park Service, 2022. http://dx.doi.org/10.36967/nrr-2293127.

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Harlequin ducks (Histrionicus histrionicus) are sea ducks that migrate inland each spring to nest along fast-flowing mountain streams. They are considered one of the most imperiled duck species in North America and occur in two distinct populations on the Atlantic and Pacific coasts. The Pacific coast population includes Washington State, where harlequin ducks breed in the Olympic, Cascade, and Selkirk Mountains. This species is designated as a Management Priority Species by the National Park Service within North Cascades National Park Service Complex (NOCA). This report summarizes harlequin d

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Neeley, Aimee, Stace E. Beaulieu, Chris Proctor, et al. Standards and practices for reporting plankton and other particle observations from images. Woods Hole Oceanographic Institution, 2021. http://dx.doi.org/10.1575/1912/27377.

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This technical manual guides the user through the process of creating a data table for the submission of taxonomic and morphological information for plankton and other particles from images to a repository. Guidance is provided to produce documentation that should accompany the submission of plankton and other particle data to a repository, describes data collection and processing techniques, and outlines the creation of a data file. Field names include scientificName that represents the lowest level taxonomic classification (e.g., genus if not certain of species, family if not certain of genu

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Larsen, Trond, and Madhu Rao. Ecological Consequences of Extinctions. American Museum of Natural History, 2006. http://dx.doi.org/10.5531/cbc.ncep.0115.

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Extinction may be a natural process, but due to human activities, it is currently proceeding at an artificially accelerated rate. Field experiments and observations demonstrate that species extinctions may have broad consequences including related extinctions, loss of ecosystem functions, and disease. This module provides an overview of the patterns and consequences of biodiversity loss, with a review of key concepts and groups such as keystone species and tropic interactions.

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Gervacio Jakabosky, Olivia. Effects of Road and Trail Characteristics on Mountain Grouse Observations in Western Montana. Montana State University, 2022. https://doi.org/10.15788/s2022.curio2.

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Anthropogenic features such as roads and trails, and human activity may affect space use, demography, abundance, and other wildlife population parameters. Human infrastructure and activity may result in biased population estimates by influencing habitat use of a species and thus abundance estimates within a localized area or the ability of biologist to detect individuals during standard population surveys. To evaluate the effects of anthropogenic features on mountain grouse detections, we developed and conducted replicated surveys throughout western Montana during 2020. Biologists and voluntee

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Young, Craig. Problematic plant monitoring in Pea Ridge National Military Park: 2006–2021. Edited by Tani Hubbard. National Park Service, 2022. http://dx.doi.org/10.36967/nrr-2293656.

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Managers are challenged with the impact of problematic plants, including exotic, invasive, and pest plant species. Information on the cover and frequency of these plant species is essential for developing risk-based approaches to managing them. Based on surveys conducted in 2006, 2013, 2018, and 2021, Heartland Inventory and Monitoring Network staff and contractors identified a cumulative total of 38 potentially problematic plant species in Pea Ridge National Military Park. Of the 35 species found in 2021, we characterized 13 as very low frequency, 9 as low frequency, 9 as medium frequency, an

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Harms, Nathan, and James Cronin. Phenology of competitive interactions and implications for management of the invasive wetland plant Alternanthera philoxeroides. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42188.

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Phenological differences between invading plants and members of recipient communities may increase the success of invaders because of priority effects. Thus, the application of management when the invader has a phenological advantage (for example, early in the year) can benefit other species by increasing resource availability. This technical note summarizes results from a combination of field observations and a mesocosm experiment to explore whether phenological differences between the invasive wetland plant, alligatorweed (Alternanthera philoxeroides [Mart.] Grseb.), and resident species con

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Gardner, Coral, Matt Goode, Tom Philippi, and Don Swann. Using transect sampling and road cruising surveys to estimate abundance and distribution of sidewinders (Crotalus cerastes) in Saguaro National Park, Tucson Mountain District: Final report. National Park Service, 2024. http://dx.doi.org/10.36967/2302204.

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Saguaro National Park, Tucson Mountain District (TMD) includes a portion of the Tucson Mountains and adjacent lower bajada landscapes along the western boundary in Avra Valley. Threats to TMD include urban encroachment, busy commuter roads running through the interior and along the boundaries, agricultural development, and the Arizona Canal and water recharge basin. Plans to route Interstate 11 within 400 m of the western boundary have led to concerns over projected negative impacts on wildlife. Among the species of concern is the Sidewinder (Crotalus cerastes), primarily because the populatio

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Adelberg, Jeff, Halina Skorupska, Bill Rhodes, Yigal Cohen, and Rafael Perl-Treves. Interploid Hybridization of Cucumis melo and C. metuliferus. United States Department of Agriculture, 1999. http://dx.doi.org/10.32747/1999.7580673.bard.

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The long-term motivation for this research is to transfer useful traits from a broad based gene pool of wild species into the narrow base of a cultivated crop in Cucumis. Our primary focus was to use polyploid prior to fertilization as a tool to overcome fertility barriers in the cross between C. melo and C. metuliferus. In conducting this research, we explored all combinations of tetraploid and diploid parents, in reciprocal combinations. Pollinations were made in both the field and greenhouse, using emasculated flowers, moneocious females, and open pollination by insect vectors, with morphol

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Leis, Sherry. Vegetation community monitoring trends in restored tallgrass prairie at Wilson’s Creek National Battlefield: 2008–2020. National Park Service, 2022. http://dx.doi.org/10.36967/nrr-2293117.

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Plant community monitoring at Wilson’s Creek National Battlefield (NB) focused on the restored tallgrass prairie community. Six monitoring sites were visited four times and observations of plant species and ground cover were made. In addition to those observations, we included two environmental factors in this report—precipitation and recent fire history—to help understand the vegetation data status and trends. Precipitation data (standardized vegetation index) indicated drought conditions in 2012 and some dry periods in 2016. Although prairies are adapted to drought, we found that species ric

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Whitecloud, Simone, Kevin Philley, J. Minkin, et al. Assessing the Validity and Accuracy of Wetland Indicator Status Ratings for Eight Species in Alaska Subregions. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49509.

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Preexisting ecological information and plant species occurrence data were used to determine the accuracy and validity of the present regional and subregional wetland indicator status ratings for eight species: Andromeda polifolia, Arctous rubra, Carex canescens, Rhododendron tomentosum, Rubus arcticus, Salix arctica, Salix pulchra, and Viola palustris. Technical documentation was developed to either (1) support the current National Wetland Plant List (NWPL) subregion boundaries and wetland indicator status ratings for the NWPL Alaska Region or (2) support a proposed change to the subregions or

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