Relevant bibliographies by topics / Abundance of individuals

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

Academic literature on the topic 'Abundance of individuals'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Abundance of individuals"

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Morlon, Hélène, Ethan P. White, Rampal S. Etienne, et al. "Taking species abundance distributions beyond individuals." Ecology Letters 12, no. 6 (2009): 488–501. http://dx.doi.org/10.1111/j.1461-0248.2009.01318.x.

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Swengel, Ann B., and Scott R. Swengel. "Paradoxes of Poweshiek Skipperling (Oarisma poweshiek) (Lepidoptera: Hesperiidae): Abundance Patterns and Management of a Highly Imperiled Prairie Species." ISRN Entomology 2014 (January 19, 2014): 1–10. http://dx.doi.org/10.1155/2014/216427.

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Although Oarisma poweshiek sometimes occurred in localized abundance, its known range is centered on the highly decimated northern tallgrass prairie of North America. To aid its conservation, we analyze surveys from 1988 to 1997 of populations no longer being found. While we recorded 2403 individuals at 20 sites, five sites had 87% of individuals, while 12 sites had only 2% of individuals. Most surveys during O. poweshiek flight had zero individuals recorded. In peak vegetative characteristics for O. poweshiek, fire management had the highest mean abundance but the lowest median abundance and
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Mulyono, Sabella Friska S., Suhara Suhara, and Iwan Setia Kurniawan. "Abundance of Ordo Lepidoptera in The Land Conversion of Ciwidey Pine Forest." Al-Hayat: Journal of Biology and Applied Biology 5, no. 2 (2022): 113–22. https://doi.org/10.21580/ah.v5i2.12684.

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The study entitled "Abundance of Ordo Lepidoptera in The Land Conversion of Ciwidey Pine Forest" aims to obtain the information about the abundance of insects of the ordo Lepidoptera and the influence of climatic factors on the abundance. The research method used is descriptive method, the research design is belt transect, and the sampling techniques used are pitfall trap, hand sorting, beating tray, and insect net. There are 6 stations with 5 quadrants in each. The results of this study obtained 37 individuals from 10 species, 10 genus, and 6 families. Abundance at station one is worth of 2 i
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Qureshi, Mubassera, Shrey Pandya, Punita Parikh, and Chirag Tank. "Assessment of diversity indices and rank abundance curve for herbaceous community of Junaghad district of Saurashtra." INTERNATIONAL JOURNAL OF PLANT SCIENCES 17, OCAEBGD (2022): 23–27. http://dx.doi.org/10.15740/has/ijps/17/ocaebgd/23-27.

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This Research was aimed at studying diversity indices and plotting a Rank Abundance Curve for herbaceous plant community at Kapuriyavadi area located in Junagadh District of Saurashtra region. The study was conducted from July to September 2021-22. Five quadrats of 1mx1m size were randomly laid down in the study area in such a way that they include maximum vegetation cover. Total number of individuals of each plant species, Rank abundance curve and Simpsons and Shannon-Wiener indices were calculated. A total of 33 plant species were identified and listed.Brachiariasp.Cyanodondactylon and Phyll
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de Oyarzabal, Eleane, Lourdes García-García, Claudia Rangel-Escareño, et al. "Expression of USP18 and IL2RA Is Increased in Individuals Receiving Latent Tuberculosis Treatment with Isoniazid." Journal of Immunology Research 2019 (December 6, 2019): 1–13. http://dx.doi.org/10.1155/2019/1297131.

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Background. The treatment of latent tuberculosis infection (LTBI) in individuals at risk of reactivation is essential for tuberculosis control. However, blood biomarkers associated with LTBI treatment have not been identified. Methods. Blood samples from tuberculin skin test (TST) reactive individuals were collected before and after one and six months of isoniazid (INH) therapy. Peripheral mononuclear cells (PBMC) were isolated, and an in-house interferon-γ release assay (IGRA) was performed. Expression of chemokine ligand 4 (CCL4), chemokine ligand 10 (CXCL10), chemokine ligand 11 (CXCL11), i
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Sherman, CS, MR Heupel, SK Moore, A. Chin, and CA Simpfendorfer. "When sharks are away, rays will play: effects of top predator removal in coral reef ecosystems." Marine Ecology Progress Series 641 (May 7, 2020): 145–57. http://dx.doi.org/10.3354/meps13307.

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Shark abundances are decreasing on many coral reefs, but the ecosystem effects of this loss are poorly understood. Rays are a prevalent mesopredator in tropical coral reef ecosystems that are preyed upon by top predators like sharks. Studies have suggested reduced predator abundances lead to increases in mesopredator abundance (mesopredator release). We examined the relationship between top predator abundances and the abundance and behaviour of 2 small benthic ray genera using baited remote underwater video systems (BRUVS) across 6 countries. Where predators were more abundant, 2 genera of sma
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Manu, Gaspar, Martinus Baroleh, and Alex D. Kambey. "STUDI FITOPLANKTON DI DANAU TONDANO PROVINSI SULAWESI UTARA." JURNAL PERIKANAN DAN KELAUTAN TROPIS 6, no. 1 (2012): 13. http://dx.doi.org/10.35800/jpkt.6.1.2010.108.

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This research was conducted in Tondano Lake North Sulawesi for 3 month from June to August 2007. The research was aimed to identify species abundance of phytoplankton. Phytoplankton were collected by using a 40 μm large plankton net. Results showed that phytoplankton consisted of 32 genera. It also indicated that the highest individual abundance was shown by Fragillaria (2903 individuals), followed by Microspora (2349 individuals), Closterium ( 984 individuals), Zynema (803 individuals), Melosira (770 individuals), and Anabaena (693 individuals) respectively with monthly sampling the highest a
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Kamal, Abdullahi, Aliyu Abdulhamid Omar, Abdullahi Shamsudden, et al. "Diversity and Abundance of Butterfly Fauna (<i>Lepidoptera</i>) at Sa'adu Zungur University, Bauchi Main Campus, Nigeria." Dutse Journal of Pure and Applied Sciences 11, no. 1b (2025): 282–91. https://doi.org/10.4314/dujopas.v11i1b.30.

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The study was conducted to assess the diversity and abundance of butterfly species at Sa’adu Zungur University, Main Campus, Bauchi State. A total of three hundred and fifty-seven (357) individual butterflies were recorded across two different sites within the campus, and the study was conducted between July and August, 2024. These individuals were distributed among eleven (11) species belonging to three (3) families. The recorded species included Limenitis archippus, Danaus plexippus, Anthocharis sara, Colias harfordii, Pieris rapae, Nathalis iole, Heliopetes ericetorum, Hypolimnas misippus,
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Asni Johari, Pebi Triamaliah, Muswita, Upik Yelianti, and Muhammad Naswir. "Temporal variation in aphid abundance throughout cucumber plant growth stages." Open Access Research Journal of Biology and Pharmacy 10, no. 2 (2024): 022–27. http://dx.doi.org/10.53022/oarjbp.2024.10.2.0009.

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This study aims to analyze the abundance of aphids (Aphis gossypii) on cucumber plants (Cucumis sativus L.) during both the vegetative and generative growth phases in the agricultural land of the Jambi farming community. The research employs a descriptive exploratory approach. Data were collected using a total sampling technique, involving the counting of all aphids found on sampled cucumber plants. Measurements of air humidity, temperature, and light intensity were conducted during the observation period. The results revealed that during the vegetative phase, the highest abundance of aphids o
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Teston, José Augusto, and Danúbia Marcela Pereira Valente. "Population Fluctuation of Pseudalus limona (Lepidoptera, Erebidae, Arctiinae) in an Amazonian Savannah of the alter do chão environmental protection area, Santarém, Pará, Brazil." Revista Ouricuri 15, no. 1 (2025): 03–12. https://doi.org/10.59360/ouricuri.vol15.i1.a18042.

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The tiger moth (Lepidoptera: Erebidae: Arctiinae) Pseudalus limona Schaus, 1896 occurs almost exclusively in Brazil. The caterpillar of this polyphagous species primarily feeds on plants from the families Anacardiaceae, Connaraceae, Proteaceae, and Vochysiaceae. In this study, the population dynamics of P. limona were monitored monthly using light traps in an Amazonian savannah over a one-year period (June 2014 – May 2015). Population data were analyzed and correlated with meteorological variables—mean temperature, relative humidity, and rainfall—using multiple regression analyses. Analysis of
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Dissertations / Theses on the topic "Abundance of individuals"

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Fearnbach, Holly. "Individual-based population assessment for cetaceans : using photographs to infer abundance, demography and individual quality." Thesis, University of Aberdeen, 2012. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=189677.

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Taylor, Hannah Louise. "Quantitative detection of low abundance gene expression products in individual E. coli cells." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31258.

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Stochastic fluctuations in mRNA and protein copy number between cells are inevitable during the process gene expression, even when cells carry identical chromosomes. Such fluctuations are able to impact the phenotypic fate of the cell, and are known to have greater impact when the copy number of the molecule involved is low. Additionally, up to 50% of proteins in Escherichia coli are present in the cell at a level of 10 molecules per cell or fewer (Taniguchi et al. 2010). As such, quantification of low copy number gene expression products and their distribution in cellular populations is key i
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Penner, Johan. "Effect of temporal increases in prey fish abundance on individual growth rates of coastal piscivores." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-121854.

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Commercial fishing in the Baltic Sea has led to decrease in abundance of large predatory fish and as a result the predation pressure on smaller fish species has been reduced. Three-spined stickleback (Gasterosteus aculeatus) is among the species that have benefited from reduced predation pressure. Sticklebacks are a small fish species that spends its juvenile stage in coastal habitat and its adult stage in the open sea with a yearly migration from the sea to coastal habitat and lakes for spawning. Sticklebacks have been shown to have a negative effect on fry of coastal species, such as perch (
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Johnson, Christian I., R. Michael Rich, Nelson Caldwell, et al. "Exploring the Chemical Composition and Double Horizontal Branch of the Bulge Globular Cluster NGC 6569." IOP PUBLISHING LTD, 2018. http://hdl.handle.net/10150/626525.

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Photometric and spectroscopic analyses have shown that the Galactic bulge cluster Terzan 5 hosts several populations with different metallicities and ages that manifest as a double red horizontal branch (HB). A recent investigation of the massive bulge cluster NGC 6569 revealed a similar, though less extended, HB luminosity split, but little is known about the cluster's detailed chemical composition. Therefore, we have used high- resolution spectra from the Magellan-M2FS and VLT-FLAMES spectrographs to investigate the chemical compositions and radial velocity distributions of red giant branch
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Johnson, Christian I., Nelson Caldwell, R. Michael Rich, et al. "Chemical Complexity in the Eu-enhanced Monometallic Globular NGC 5986." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/624431.

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NGC 5986 is a poorly studied but relatively massive Galactic globular cluster that shares several physical and morphological characteristics with "iron-complex" clusters known to exhibit significant metallicity and heavy-element dispersions. In order to determine whether NGC 5986 joins the iron-complex cluster class, we investigated the chemical composition of 25 red giant branch and asymptotic giant branch cluster stars using high-resolution spectra obtained with the Magellan-M2FS instrument. Cluster membership was verified using a combination of radial velocity and [Fe/H] measurements, and w
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Min, M., J. Bouwman, C. Dominik, et al. "The abundance and thermal history of water ice in the disk surrounding HD 142527 from the DIGIT Herschel Key Program." EDP SCIENCES S A, 2016. http://hdl.handle.net/10150/622159.

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Context. The presence or absence of ice in protoplanetary disks is of great importance to the formation of planets. By enhancing solid surface density and increasing sticking efficiency, ice catalyzes the rapid formation of planetesimals and decreases the timescale of giant planet core accretion. Aims. In this paper, we analyze the composition of the outer disk around the Herbig star HD 142527. We focus on the composition of water ice, but also analyze the abundances of previously proposed minerals. Methods. We present new Herschel far-infrared spectra and a re-reduction of archival data from
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Spencer, Meghin E., Mario Mateo, Matthew G. Walker, and Edward W. Olszewski. "A Multi-epoch Kinematic Study of the Remote Dwarf Spheroidal Galaxy Leo II." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/623237.

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We conducted a large spectroscopic survey of 336 red giants in the direction of the Leo II dwarf galaxy using Hectochelle on the Multiple Mirror Telescope, and we conclude that 175 of them are members based on their radial velocities and surface gravities. Of this set, 40 stars have never before been observed spectroscopically. The systemic velocity of the dwarf is 78.3 +/- 0.6 km s(-1) with a velocity dispersion of 7.4 +/- 0.4 km s(-1). We identify one star beyond the tidal radius of Leo II but find no signatures of uniform rotation, kinematic asymmetries, or streams. The stars show a strong
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Farihi, J., D. Koester, B. Zuckerman, et al. "Solar abundances of rock-forming elements, extreme oxygen and hydrogen in a young polluted white dwarf." OXFORD UNIV PRESS, 2016. http://hdl.handle.net/10150/622949.

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The T-eff = 20 800 K white dwarf WD 1536+520 is shown to have broadly solar abundances of the major rock-forming elements O, Mg, Al, Si, Ca, and Fe, together with a strong relative depletion in the volatile elements C and S. In addition to the highest metal abundances observed to date, including log (O/He) = -3.4, the helium-dominated atmosphere has an exceptional hydrogen abundance at log (H/He) = -1.7. Within the uncertainties, the metal-to-metal ratios are consistent with the accretion of an H2O-rich and rocky parent body, an interpretation supported by the anomalously high trace hydrogen.
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van, Haaften Lennart M., Thomas J. Maccarone, Paul H. Sell, et al. "An Excess of Low-mass X-Ray Binaries in the Outer Halo of NGC 4472." IOP PUBLISHING LTD, 2018. http://hdl.handle.net/10150/626536.

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We present new Chandra observations of the outer halo of the giant elliptical galaxy NGC 4472 (M49) in the Virgo Cluster. The data extend to 130 kpc (28'), and have a combined exposure time of 150 ks. After identifying optical counterparts using the Next Generation Virgo Cluster Survey to remove background active galactic nuclei and globular cluster (GC) sources, and correcting for completeness, we find that the number of field low-mass X-ray binaries (LMXBs) per unit stellar V-band light increases significantly with the galactocentric radius. Because the flux limit of the complete sample corr
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Lim, Beomdu, Hwankyung Sung, Jinyoung S. Kim, Michael S. Bessell, Narae Hwang, and Byeong-Gon Park. "A CONSTRAINT ON THE FORMATION TIMESCALE OF THE YOUNG OPEN CLUSTER NGC 2264: LITHIUM ABUNDANCE OF PRE-MAIN SEQUENCE STARS." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/622162.

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The timescale of cluster formation is an essential parameter in order to understand the formation process of star clusters. Pre-main sequence (PMS) stars in nearby young open clusters reveal a large spread in brightness. If the spread were considered to be a result of a real spread in age, the corresponding cluster formation timescale would be about 5-20 Myr. Hence it could be interpreted that star formation in an open cluster is prolonged for up to a few tens of Myr. However, difficulties in reddening correction, observational errors, and systematic uncertainties introduced by imperfect evolu
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Books on the topic "Abundance of individuals"

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Nigro, Giampiero, ed. Gestione dell'acqua in Europa (XII-XVIII Secc.) / Water Management in Europe (12th-18th centuries). Firenze University Press, 2018. http://dx.doi.org/10.36253/978-88-6453-700-9.

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Water was a source of wealth which facilitated, fostered or brutally halted economic development in the Ancien Regime. Lack of hygiene meant that water was used less for drinking than other drinks, but as a raw material, source of energy, cooling, rinsing and cleansing agent, water was unequalled. It played a role in public and private relaxation and in health. Water also proved to be an ideal, safe and cheap means of transporting goods and ideas. Urban historians have long pointed to the enormous comparative advantage enjoyed by towns and regions whose favourable maritime or riverine location
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Murgia, Camilla. Space, Images, and Art Perception in Napoleonic Paris. Amsterdam University Press, 2025. https://doi.org/10.5117/9789463724142.

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This book examines the impact of space on the perception of art and visual culture in early nineteenth-century Paris. It turns its attention to the way in which space determines the understanding and the development of visual culture. The abundance of images, their status, and their employment alike offer a means to grasp the extent of the development of an approach to art which further involved the spectator. Space is here conceived as a multifaceted entity, spanning architectural, scholarly, artistic, and visual dimensions. These various aspects offer means to consider the way in which image
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Boczkowski, Pablo J. Abundance. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197565742.001.0001.

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The book examines the experience of living in a society that has more information available to the public than ever before. It focuses on the interpretations, emotions, and practices of dealing with this abundance in everyday life. Drawing upon extensive fieldwork and survey research conducted in Argentina, the book inquiries into the role of cultural and structural factors that mediate between the availability of information and the actual consequences for individuals, media, politics, and society. Providing the first book-length account of the topic in the Global South, it concludes that the
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Zweig, David. An Abundance of Caution. The MIT Press, 2025. https://doi.org/10.7551/mitpress/14377.001.0001.

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An Abundance of Caution is a devastating account of the decision-making process behind one of the worst American policy failures in a century—the extended closures of public schools during the pandemic. In fascinating and meticulously reported detail, David Zweig shows how some of the most trusted members of society—from Pulitzer Prize–winning journalists to eminent health officials—repeatedly made fundamental errors in their assessment and presentation of evidence. As a result, for the first time in modern American history, millions of healthy children did not set foot in a classroom for more
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Botsford, Louis W., J. Wilson White, and Alan Hastings. Population Dynamics for Conservation. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198758365.001.0001.

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This book is a quantitative exposition of our current understanding of the dynamics of plant and animal populations, with the goal that readers will be able to understand, and participate in the management of populations in the wild. The book uses mathematical models to establish the basic principles of population behaviour. It begins with a philosophical approach to mathematical models of populations. It then progresses from a description of models with a single variable, abundance, to models that describe changes in the abundance of individuals at each age, then similar models that describe
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The Abundance spread within globular clusters: Spectroscopy of individual stars. Paris Observatory], 1989.

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Alice, Kathryn. Teaching Successful Workshops: Steps to Fulfillment & Abundance for the Individual Practitioner. The Alice Tompkins Company, 2004.

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Sandberg, Jörgen, Linda Rouleau, Ann Langley, and Haridimos Tsoukas. Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198806639.003.0001.

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Skillful performance has become one of the most perennial and critical questions within management and organization studies (MOS). This introductory chapter discusses how skillful performance has been conceptualized and investigated in three main interrelated research areas within MOS, namely strategic management, organizational learning and knowledge management, and human resource management. It critically scrutinizes these bodies of literatures, showing that while they have generated an abundance of knowledge about what characterizes the properties of the capabilities, knowledge, competence,
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Cutter, Asher D. A Primer of Molecular Population Genetics. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198838944.001.0001.

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The study of molecular population genetics seeks to understand the micro-evolutionary principles underlying DNA sequence variation and change. It addresses such questions as: Why do individuals differ as much as they do in their DNA sequences? What are the genomic signatures of adaptations? How often does natural selection dictate changes to DNA and accumulate as differences between species? How does the ebb and flow in the abundance of individuals over time get marked onto chromosomes to record genetic history? The concepts used to answer such questions also apply to analysis of personal geno
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Peterson, Ralph R. Empowered Individualism: Discovering Authentically Abundant Joyfulness every day! Rrpeterson, Inc, 2020.

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Book chapters on the topic "Abundance of individuals"

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Wastell, David. "In Praise of Abundance: Why Individuals Matter in Design Science." In Grand Successes and Failures in IT. Public and Private Sectors. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38862-0_36.

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Ragbetli, Murat Cetin, and Seda Keskin. "A Current Review on Diabetes Mellitus Induced Gut Microbiota and Histological Changes." In Current Multidisciplinary Approach to Diabetes Mellitus Occurrence Mechanism. Nobel Tip Kitabevleri, 2023. http://dx.doi.org/10.69860/nobel.9786053359104.2.

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Recent studies have highlighted the intricate relationship between diabetes mellitus (DM) and alterations in gut microbiota composition, as well as associated histological changes. Dysbiosis, characterized by an imbalance in microbial communities, has been observed in diabetic individuals, with decreased microbial diversity and altered abundance of specific taxa such as Firmicutes and Bacteroidetes. These changes are implicated in promoting systemic inflammation, insulin resistance, and metabolic dysfunction. Concurrently, diabetic conditions influence gut barrier integrity and mucosal immunit
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Gaston, Kevin J. "Abundance structure." In The Structure and Dynamics of Geographic Ranges. Oxford University PressOxford, 2003. http://dx.doi.org/10.1093/oso/9780198526407.003.0004.

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Abstract Position and size are two important descriptors of the structure of the geographic range of a species (Chapters 2 and 3). Nonetheless, they are but crude indices of the distribution of individuals across the land (or sea) scape. Whilst they are all that have been determined about the ranges of many species—and for the majority not even these quantities have as yet been measured (a high proportion of species that are doubtless much more widespread remain known from only a single locality; Andersen et al. 1997; Stork 1997)—they entirely ignore any patterns of spatial distribution of ind
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Gray, John S., and Michael Elliott. "Diversity." In Ecology of Marine Sediments. Oxford University Press, 2009. http://dx.doi.org/10.1093/oso/9780198569015.003.0008.

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In the previous chapter we covered ways of describing samples of benthos, but specifically did not include diversity. We can talk of primary community variables, such as abundance (A), species richness (S) and biomass (B), and derived variables from these such as true diversity indices, evenness indices, and ratios indicating the relationship between species richness and abundance (A/S, the abundance ratio or the average abundance per species) and between biomass and abundance (B/A, the biomass ratio or the mean biomass per individual). Diversity is not just simply about the number of species
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Bowman, William D., and Sally D. Hacker. "Population Distribution and Abundance." In Ecology. Oxford University Press, 2023. http://dx.doi.org/10.1093/hesc/9780197614044.003.0016.

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Key Concepts CONCEPT 9.1 Populations are groups of individuals of the same species that vary in size over space and time. CONCEPT 9.2 Species vary in their distribution and abundance across their geographic range. CONCEPT 9.3 Species are limited in their distribution and abundance...
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Knape, Jonas, and Andreas Lindén. "Abundance-based approaches." In Demographic Methods across the Tree of Life. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198838609.003.0007.

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Across a wide range of different organisms, abundance data form one of the backbones for understanding the dynamics of populations. This type of data consists of measures of population size over time or space in the form of numbers of individuals, biomass, areal cover, or other measures. Abundance data contain no direct information about demographic processes but are available at larger scales or higher resolution in space and time than direct demographic data. This chapter introduces some of the basic statistical modeling strategies that can be used to learn about populations from abundance d
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Gurevitch, Jessica, Samuel M. Scheiner, and Gordon A. Fox. "Local Abundance, Diversity, and Rarity." In The Ecology of Plants. Oxford University Press, 2020. http://dx.doi.org/10.1093/hesc/9781605358291.003.0017.

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This chapter addresses a series of questions that raise fundamental issues in ecology and also have major implications for applied ecology and conservation. It seeks to answer questions like: what determines the relative abundances of the individuals in a community ever since ecology was a scientific discipline? What determines how many species can coexist in a community? The chapter aims to understand how species interact, and whether that has anything to do with their abundances. It also examines why some species are rare, others common, and still others invasive, in order to understand the
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Nee, Sean, Paul H. Harvey, and Peter Cotgreave. "Species abundances." In Mutualism and Community Organization. Oxford University PressOxford, 1993. http://dx.doi.org/10.1093/oso/9780198540274.003.0022.

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Abstract How many individuals of each species are there in a given community, and why? These questions, which lie at the heart of ecology, continue to motivate much ecological research. In this chapter one approach to answering these questions will be considered, i.e. the detection and interpretation of patterns of species abundance that are common to different communities. If the same patterns are found in different communities, it is likely that similar processes are involved. For some years, species abundance data was represented as in Fig. 22.1, plotting the number of species in a sample r
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Sutherland, William J. "Prey availability." In From Individual Behaviour to Population Ecology. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198549116.003.0004.

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Abstract Animals often appear to live amongst a superabundance of food. For example, for many thrushes, frogs, or damselfish there must often be as many prey in a square metre of substrate as an individual requires in a day. Herbivores are similarly often surrounded by abundant vegetation. Individuals may, however, starve amongst such apparent abundance and the reason, of course, is that not all of the food is available. Availability is thus a very important factor, yet it has received little attention as it is often hard to quantify.
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Harte, John. "Maximum Entropy." In Advances in Info-Metrics. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190636685.003.0006.

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A major goal of ecology is to predict patterns and changes in the abundance, distribution, and energetics of individuals and species in ecosystems. The maximum entropy theory of ecology (METE) predicts the functional forms and parameter values describing the central metrics of macroecology, including the distribution of abundances over all the species, metabolic rates over all individuals, spatial aggregation of individuals within species, and the dependence of species diversity on areas of habitat. In METE, the maximum entropy inference procedure is implemented using the constraints imposed b
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Conference papers on the topic "Abundance of individuals"

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Jgenti, Lali, Eka Tskitishvil, and Tengiz Vadachkoria. "TAXONOMIC AND ECOLOGICAL STRUCTURE OF FREE-LIVING AND PLANT PARASITIC NEMATODES IN POTATO FIELDS IN KHULO (AJARA, EASTERN GEORGIA)." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s14.47.

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The aim of this study is to determine the prevalence of plant parasitic nematodes in the main potatoe growing area in Ajara and to show whether altitu-dinal gradient affects nematode diversity and community structure along three contrasting altitudinal localities of Ajara: Kobuleti (10 m.a.s.l), Shuakhevi (450 m.a.s.l) and Khulo (950 -1800 m.a.s.l). The first part of this study is to assess for the first time the taxonomic and ecological structure of plant parasitic and free-living nematodes in agroecosystems of Khulo in this territory. Fauna of soil nematodes was studied in three villages of
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Tskitishvili, Eka, Lali Jgenti, Nino Lomidze, and Tengiz Vadachkoria. "TAXONOMIC STRUCTURE OF THE NEMATODE COMMUNITIES IN AGROECOSYSTEMS OF SHUAKHEVI (AJARA, GEORGIA)." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/3.2/s13.41.

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Potatoes is the fourth important food crop worldwide after maize, wheat, and rice and are grown in more than 100 countries worldwide under temperate, subtropical and tropical conditions, however, they are considered as cool temperature crop. Potato is one of the most important food crops in Georgia and potato growing has always been the subject of great importance for settlement of food supply problems in country. Potato crops are severely affected by approximately forty soil borne diseases worldwide including those caused by soil inhabiting fungi, bacteria and nematodes. Plant-parasitic nemat
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O’Malley, Cynthia L., Scott Christensen, and Gina Neilson. "Southern Nevada Water Authority-Polyurethane Lining Evaluation and Testing." In SSPC 2011. SSPC, 2011. https://doi.org/10.5006/s2011-00054.

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Abstract The Southern Nevada Water Authority (SNWA) is a regional agency whose mission is to manage water resources and develop solutions that will ensure adequate future water supplies for the Las Vegas Valley. Its primary water resource is the Colorado River via Lake Mead. Since 2000, persistent droughts have resulted in decreasing Lake Mead water levels. To reduce Southern Nevada’s reliance on the Colorado River, SNWA has begun planning for the development of in-state groundwater resources north of Las Vegas. Initial planning efforts identified project specific requirements that could poten
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Khorraminezhad, Leila, Karine Greffard, Mickael Leclercq, Arnaud Droit, Jean-Fracois Bilodeau, and Iwona Rudkowska. "Butyric acid concentration is associated with Firmicutes bacteria abundance after dairy intake among hyperinsulinemic individuals." In Virtual 2020 AOCS Annual Meeting & Expo. American Oil Chemists’ Society (AOCS), 2020. http://dx.doi.org/10.21748/am20.23.

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Premcharoen Siraprapha, Siraprapha, Siraprapha Premcharoen Siraprapha, Sutanun Kiat-amornwet, and Sutanun Kiat-amornwet. "LAND USE IMPACTS ON MANGROVE FISH ASSEMBLAGES: IMPLICATIONS FOR CONSERVATION OF COASTAL RESOURCES IN THE INNER GULF OF THAILAND." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b946e44cc39.05776562.

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Fish assemblages as reflected from coastal land use in mangrove estuary of Ban Laem District, Phetchaburi Province, Inner Gulf of Thailand had been conducted seasonally during December 2012 and October 2013. Samplings were conducted in blood cockle farms, public benefit channel, mangrove fringe area and Ban Laem estuary, using a push net at both day and night. A total of 29,287 individuals belonging to 11 orders 33 families and 54 species were collected. The Carangidae was by far the most speciose (6 species), with Arius maculatus numerically dominating (15,989 individuals, 54.59%). The highes
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Premcharoen Siraprapha, Siraprapha, Siraprapha Premcharoen Siraprapha, Sutanun Kiat-amornwet, and Sutanun Kiat-amornwet. "LAND USE IMPACTS ON MANGROVE FISH ASSEMBLAGES: IMPLICATIONS FOR CONSERVATION OF COASTAL RESOURCES IN THE INNER GULF OF THAILAND." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b431555ae6a.

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Fish assemblages as reflected from coastal land use in mangrove estuary of Ban Laem District, Phetchaburi Province, Inner Gulf of Thailand had been conducted seasonally during December 2012 and October 2013. Samplings were conducted in blood cockle farms, public benefit channel, mangrove fringe area and Ban Laem estuary, using a push net at both day and night. A total of 29,287 individuals belonging to 11 orders 33 families and 54 species were collected. The Carangidae was by far the most speciose (6 species), with Arius maculatus numerically dominating (15,989 individuals, 54.59%). The highes
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Bacal, Svetlana, and Irina Mihailov. "Contribuții la cunoașterea coleopterelor epigee din unele ecosisteme forestiere din regiunea de nord a Republicii Moldova." In Provocări şi tendinţe actuale în cercetarea componentelor naturale şi socio-economice ale ecosistemelor urbane şi rurale. Institute of Ecology and Geography, Republic of Moldova, 2020. http://dx.doi.org/10.53380/9789975891608.14.

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This article reports on the edaphic beetle diversity and abundance study conducted on the teritory of the Republic of Moldova during 2005 and 2014 in forest ecosystems located near Branzeni and Zabriceni. All insects were collected using pitfall traps techniques. In total, 1620 beetle specimens were collected, representing 31 species from 17 genera and 4 families. The largest family was Carabidae, followed by Silphidae, Scarabaeidae and Lucanidae. Carabidae also represented the greatest proportion in terms of number of individuals. Seventeen species were common in all investigated forest ecosy
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Popović, Filip J., Tanja B. Trakić, Mirjana M. Stojanović, and Jovana M. Sekulić. "Abundance, species richness and diversity of earthworms (lumbricidae) in several habitats of the northern part of Jastrebac Mountain." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.280p.

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The aim of this study was to investigate the diversity of earthworms in different habitats (meadow, humid meadow, oak and beech forest). A total of nine earthworm species belonging to six genera were found in the studied habitats. In the studied habitats, the earthworm fauna was found to be different: the beech forest was richer in earthworms (6 taxa), while the oak forest was poorest in earthworms (3 taxa). The earthworm abundance was higher in the humid meadow (34 individuals), while was lower in the beech forest (17 individuals). A combination of the alpha diversity index (Shannon-Weaver, E
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Kis-Novak, Darinka. "INTERCALIBRATION PROCEDURE OF THE FRAMEWORK DIRECTIVE ON WATER - COMPARISON OF RESULTS FOR MACROZOOBENTHOS ON THE EXAMPLE OF RESERVOIR LAKES OF THE DRAVA RIVER IN MEDUMURJE, CROATIA." In 22nd International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/3.2/s12.13.

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The Water Area Management Plan 2016-2021 assessed reservoirs as natural water bodies. This assessment included their ecological condition. The goal of the intercalibration procedure is to achieve consistency, comparability of results and evaluation of the ecological state based on the biological element of macrozoobenthos quality. The paper presents the results of research on the Cakovec HPP and Dubrava HPP reservoirs on the Drava River from 1999 and 2003. Complex studies of individual biological elements of macrozoobenthos included seasonal monitoring. They are part of the overall state of th
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Jakubec, Pavel, Santiago Montoya-Molina, Jarin Qubaiova, Martin Novak, and Martina Vetrovska. "BIOTOPE PREFERENCES OF OICEOPTOMA THORACICUM (COLEOPTERA: SILPHIDAE)." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/5.1/s20.011.

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Biotope or habitat preferences are important species characteristics that can be used for understanding their ecology, as well as their conservation, and even as a tool for crime investigations for detection of post-mortem body manipulation. However, the characterization of species� habitat preferences can be difficult. There are several limiting factors like lack of quantitative data and reliance on anecdotal evidence for this trait. Further, we must consider the reaction to the border between two neighboring habitats. These ecotones are important biodiversity hotspots in the landscape, which
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Reports on the topic "Abundance of individuals"

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Nikula, Blair, and Robert Cook. Status and distribution of Odonates at Cape Cod National Seashore. National Park Service, 2024. http://dx.doi.org/10.36967/2303254.

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Odonates are significant components of most wetland habitats and important indicators of their health. At Cape Cod National Seashore (CACO), we compiled odonate records dating back to the 1980s and, based partly on that data, identified 41 wetland sites for sampling, representing six freshwater habitats (kettle pond, inter-dune pond, dune slack, riparian marsh, vernal pool, and bog). We surveyed these sites for adult odonates during the 2016?2018 field seasons. Ten sites were surveyed all three years (total 19-20 surveys/site); all ten had at least some historical data. The remaining 31 sites
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P, Neethi, and Shilpa S P. Gender Glossary. Indian Institute for Human Settlements, 2025. https://doi.org/10.24943/gen04.2025.

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The concept of gender is increasingly significant in our rapidly evolving society. This term can be interpreted through various dimensions, such as politics, law, social values, culture, and individual identities, all of which play vital roles. An examination reveals an abundance of glossaries pertaining to gender-related terminology, emphasising specific aspects of this concept. Numerous glossaries provide explanations concerning LGBTQIA+ related issues and the legal dimensions of gender. In this compilation, we have endeavoured to encompass terminology that reflects diverse facets of gender,
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Gallanty, Ellen, Tim Bernot, Darren Fong, et al. Inventory and nesting characteristics of northwestern pond turtles (Actinemys marmorata) in Point Reyes National Seashore and North District Golden Gate National Recreation Area. National Park Service, 2025. https://doi.org/10.36967/2307219.

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Northwestern pond turtles have gained much attention in the past few decades due to dramatic population declines. We compiled data on the pond turtle?s historic occurrence within northern Golden Gate National Recreation Area (GOGA) and Point Reyes National Seashore (PORE), including recent incidental observations by U.S. Geological Survey (USGS) staff. To build on that past data and better understand current pond turtle distribution, abundance, non-native co-inhabitants, demographics, nesting behavior, and nest site characteristics, we conducted distribution surveys here from 2015?2019. We fou
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Hoekman, Steven, Jamie Womble, Thomas Ziomek, and Courtney Amundson. Monitoring Kittlitz’s and marbled murrelets in Glacier Bay National Park and Preserve: 2021 annual report. National Park Service, 2023. http://dx.doi.org/10.36967/2299439.

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Since 2009, the Southeast Alaska Network (SEAN) has monitored the abundance and spatial distribution of Kittlitz’s (Brachyramphus brevirostris, “KIMU”) and marbled murrelets (B. marmoratus, “MAMU”) in Glacier Bay National Park, an important summer residence for both species. Species-specific, on-water density and abundance of murrelets is estimated from vessel-based line transect surveys, while accounting for detection probability and partial identification (identification only to genus). Design of the monitoring program focuses on KIMU, with secondary consideration of MAMU. Due to the global
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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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Whitaker, Stephen. Rocky intertidal community monitoring at Channel Islands National Park: 2018–19 annual report. National Park Service, 2023. http://dx.doi.org/10.36967/2299674.

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Channel Islands National Park includes the five northern islands off the coast of southern California (San Miguel, Santa Rosa, Santa Cruz, Anacapa, and Santa Barbara Islands) and the surrounding waters out one nautical mile. There are approximately 176 miles of coastline around the islands, about 80% of which is composed of rock. The diversity and undisturbed nature of the tidepools of this rocky coastline were recognized as special features of the islands in the enabling legislation. To conserve these communities unimpaired for future generations, the National Park Service has been monitoring
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Peitz, David, and Tani Hubbard. Bird monitoring at Pipestone National Monument, Minnesota: Status report 2009?2022. National Park Service, 2024. http://dx.doi.org/10.36967/2303740.

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In 2009, the Heartland Inventory and Monitoring Network initiated bird surveys on Pipestone National Monument to monitor changes in bird community composition and abundance and improve our understanding of relationships between breeding birds and their habitat and the effects of management actions on those relationships. This information helps park staff plan management objectives and assess the effectiveness of management alternatives. We evaluated park breeding bird trends in the context of trends observed within the North American Bird Conservation Initiative?s Prairie Potholes Bird Conserv
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Peitz, David, and Tani Hubbard. Bird monitoring at Herbert Hoover National Historic Site, Iowa: Status report 2005?2022. National Park Service, 2024. http://dx.doi.org/10.36967/2303787.

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In 2005, the Heartland Inventory and Monitoring Network initiated bird surveys on Herbert Hoover National Historic Site to monitor changes in bird community composition and abundance and improve our understanding of relationships between breeding birds and their habitat and the effects of management actions on those relationships. This information helps park staff plan management objectives and assess the effectiveness of management alternatives. We evaluated park breeding bird trends in the context of trends observed within the North American Bird Conservation Initiative?s Eastern Tallgrass P
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Peitz, David, and Tani Hubbard. Bird monitoring at Homestead National Historical Park, Nebraska: Status report 2009?2022. National Park Service, 2024. http://dx.doi.org/10.36967/2303805.

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In 2009, the Heartland Inventory and Monitoring Network initiated bird surveys on Homestead National Historical Park to monitor changes in bird community composition and abundance and improve our understanding of relationships between breeding birds and their habitat and the effects of management actions on those relationships. This information helps park staff plan management objectives and assess the effectiveness of management alternatives. We evaluated park breeding bird trends in the context of trends observed within the North American Bird Conservation Initiative?s Central Mixed Grass Pr
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Peitz, David, and Tani Hubbard. Bird monitoring at Effigy Mounds National Monument, Iowa: Status report 2009?2022. National Park Service, 2024. http://dx.doi.org/10.36967/2303731.

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In 2009, the Heartland Inventory and Monitoring Network initiated bird surveys on Effigy Mounds National Monument to monitor changes in bird community composition and abundance and improve our understanding of relationships between breeding birds and their habitat and the effects of management actions on those relationships. This information helps park staff plan management objectives and assess the effectiveness of management alternatives. We evaluated park breeding bird trends in the context of trends observed within the North American Bird Conservation Initiative?s Prairie Hardwood Transiti
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