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Journal articles on the topic 'Natural abundance'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 May 2024

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1

Shanovich, Hailey N., Brian H. Aukema, and Robert L. Koch. "Natural Enemy Community Composition and Impact on Brown Marmorated Stink Bug (Hemiptera: Pentatomidae) Eggs in Minnesota Apple Orchards." Environmental Entomology 49, no. 2 (2020): 324–33. http://dx.doi.org/10.1093/ee/nvz165.

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Abstract Halyomorpha halys is an invasive, polyphagous insect that feeds on many major crops, including apple. Statewide monitoring in Minnesota has shown continued increase of H. halys populations and occurrence of this pest in apple orchards. Potential arthropod natural enemies of H. halys and other pests have not been studied in Minnesota apple orchards. The purpose of this study was to characterize the composition of natural enemy communities; compare their abundances, richness and diversities between apple cultivars using different sampling methods; and assess the impact of natural enemie

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2

Abdelmohsen, Usama Ramadan, Kristina Bayer, and Ute Hentschel. "Diversity, abundance and natural products of marine sponge-associated actinomycetes." Nat. Prod. Rep. 31, no. 3 (2014): 381–99. http://dx.doi.org/10.1039/c3np70111e.

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This review discusses the diversity, abundance and natural products repertoire of actinomycetes associated with marine sponges. Comprehensive phylogenetic analysis was carried out and qPCR data on actinomycete abundances in sponge ecosystems are presented.

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3

Ding, N., and B. C. Field. "Natural Resource Abundance and Economic Growths." Land Economics 81, no. 4 (2005): 496–502. http://dx.doi.org/10.3368/le.81.4.496.

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4

Hadžišehović, M., N. Miljević, D. Golobočamn, M. Župančié, V. Šipka, and S. Kudia. "Tritium Abundance in Belgrade Natural Waters." Isotopenpraxis Isotopes in Environmental and Health Studies 26, no. 1 (1990): 5–10. http://dx.doi.org/10.1080/10256019008624209.

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5

Dupree, R., A. P. Howes, and S. C. Kohn. "Natural abundance solid state 43Ca NMR." Chemical Physics Letters 276, no. 5-6 (1997): 399–404. http://dx.doi.org/10.1016/s0009-2614(97)00863-4.

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6

Poupko, R., Z. Olender, D. Reichert, and Z. Luz. "Deuterium MAS NMR in Natural Abundance." Journal of Magnetic Resonance, Series A 106, no. 1 (1994): 113–15. http://dx.doi.org/10.1006/jmra.1994.1010.

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7

Álvarez, Roberto, and J. Rodrigo Fuentes. "Specialization dynamics and natural resources abundance." Review of World Economics 148, no. 4 (2012): 733–50. http://dx.doi.org/10.1007/s10290-012-0130-5.

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8

Jato, Terungwa Paul, and Joyce Ayaga. "Natural Resources Abundance and Macroeconomic Performance in Nigeria." European Journal of Economics 2, no. 1 (2022): 1–18. http://dx.doi.org/10.33422/eje.v2i1.185.

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Since the “Dutch disease”, more studies are establishing a negative relationship between natural resource abundance and a nation’s economic performance that have termed a ‘resource curse’. Nigeria being of such countries with abundant natural resources this study sought to examine the impact of natural resources abundance on the performance of selected macroeconomic development. Annual time series data from 1981-2021 about the variables were obtained from various sources like Central Bank of Nigeria statistical bulletin, National Bureau of Statistics and World Bank data base were used for the

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9

Jaworski, Coline C., Eva Thomine, Adrien Rusch, et al. "At Which Spatial Scale Does Crop Diversity Enhance Natural Enemy Populations and Pest Control? An Experiment in a Mosaic Cropping System." Agronomy 12, no. 8 (2022): 1973. http://dx.doi.org/10.3390/agronomy12081973.

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The importance of plant richness to enhance the presence, biodiversity and efficiency of natural enemies in agricultural systems has largely been studied and demonstrated these last decades. Planting and preserving non-crop plants or manipulating crop richness in fields are practices that have proven their efficiency. However, the impact of crop-richness continuity in space and time on pests and natural enemies at a landscape scale remains poorly studied. In a two-year study, we assessed the effect of crop richness (single crop vs. multiple crops) on pest and natural enemy abundance and spillo

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10

Duff, Thomas J., Tina L. Bell, and Alan York. "Patterns of plant abundances in natural systems: is there value in modelling both species abundance and distribution?" Australian Journal of Botany 59, no. 8 (2011): 719. http://dx.doi.org/10.1071/bt11017.

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In plant ecology it is common to use biophysical models to predict species distribution; however, spatial quantitative models of plant species remain rare. In practice, occupancy models are often assumed to indicate habitant quality and are used as surrogate abundance models. This study assessed the potential value of quantitative models of plants for ecosystem management applications by assessing patterns of occupancy and abundance within two closely related understorey plant species, Xanthorrhoea australis and X. caespitosa. Vegetation quadrats were surveyed in Eucalyptus woodland and cover-

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11

Holloway, Paul, and Richard Field. "Can Rock-Rubble Groynes Support Similar Intertidal Ecological Communities to Natural Rocky Shores?" Land 9, no. 5 (2020): 131. http://dx.doi.org/10.3390/land9050131.

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Despite the global implementation of rock-rubble groyne structures, there is limited research investigating their ecology, much less than for other artificial coastal structures. Here we compare the intertidal ecology of urban (or semi-urban) rock-rubble groynes and more rural natural rocky shores for three areas of the UK coastline. We collected richness and abundance data for 771 quadrats across three counties, finding a total of 81 species, with 48 species on the groynes and 71 species on the natural rocky shores. We performed three-way analysis of variance (ANOVA) on both richness and abun

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12

Sutherland, R. A., C. van Kessel, and D. J. Pennock. "Spatial Variability of Nitrogen-15 Natural Abundance." Soil Science Society of America Journal 55, no. 5 (1991): 1339–47. http://dx.doi.org/10.2136/sssaj1991.03615995005500050024x.

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13

Clendinen, Chaevien S., Brittany Lee-McMullen, Caroline M. Williams, et al. "13C NMR Metabolomics: Applications at Natural Abundance." Analytical Chemistry 86, no. 18 (2014): 9242–50. http://dx.doi.org/10.1021/ac502346h.

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14

Dey, Arnab, Benoît Charrier, Estelle Martineau, et al. "Hyperpolarized NMR Metabolomics at Natural 13C Abundance." Analytical Chemistry 92, no. 22 (2020): 14867–71. http://dx.doi.org/10.1021/acs.analchem.0c03510.

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15

Stijns, Jean-Philippe. "Natural resource abundance and human capital accumulation." World Development 34, no. 6 (2006): 1060–83. http://dx.doi.org/10.1016/j.worlddev.2005.11.005.

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16

Stijns, Jean-Philippe C. "Natural resource abundance and economic growth revisited." Resources Policy 30, no. 2 (2005): 107–30. http://dx.doi.org/10.1016/j.resourpol.2005.05.001.

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17

Kinchesh, P., E. W. Randall, and S. C. R. Williams. "NMR imaging of 15N at natural abundance." Journal of Magnetic Resonance (1969) 98, no. 2 (1992): 458–61. http://dx.doi.org/10.1016/0022-2364(92)90148-z.

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18

Remelli, Sara, Pietro Rizzo, Fulvio Celico, and Cristina Menta. "Natural Surface Hydrocarbons and Soil Faunal Biodiversity: A Bioremediation Perspective." Water 12, no. 9 (2020): 2358. http://dx.doi.org/10.3390/w12092358.

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Hydrocarbon pollution threatens aquatic and terrestrial ecosystems globally, but soil fauna in oil-polluted soils has been insufficiently studied. In this research, soil hydrocarbon toxicity was investigated in two natural oil seepage soils in Val D’Agri (Italy) using two different approaches: (i) toxicological tests with Folsomia candida (Collembola) and Eisenia fetida (Oligochaeta) and (ii) analysis of abundance and composition of micro- and meso-fauna. Soil sampling was done along 20 m-transepts starting from the natural oil seepages. Toxicological testing revealed that no exemplars of F. c

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19

Denis, Jérémy, Mario Lepage, Marie-Christine Gruselle, and Rachid Amara. "The Influence of Natural and Anthropogenic Environmental Pressures on European Eel Abundances in French Estuaries." Fishes 9, no. 2 (2024): 44. http://dx.doi.org/10.3390/fishes9020044.

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The aim of this study was to investigate the influence of environmental characteristics and anthropogenic pressures on the abundance of estuarine European eels (Anguilla anguilla L.) during their continental growth phase. European eels were collected with fyke nets from spring to autumn in twenty-nine estuaries along the French English Channel and the Atlantic coast. Eel abundance (catch per unit effort, CPUE) was assessed for all eels and by size class for small (total length < 300 mm), intermediate (≥300 to <450 mm), and large (≥450 mm) eels. The environmental characteristics of the Fr

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20

Lavnyy, Vasyl, Peter Spathelf, Rostyslav Kravchuk, Ruslan Vytseha, and Volodymyr Yakhnytskyy. "Silvicultural options to promote natural regeneration of Scots pine (Pinus sylvestris L.) in Western Ukrainian forests." Journal of Forest Science 68, No. 8 (2022): 298–310. http://dx.doi.org/10.17221/73/2022-jfs.

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Scots pine (Pinus sylvestris L.) forests belong to the most relevant forest types in the Western Ukrainian Roztochia area. The promotion of close-to-nature forest management in Ukraine in the framework of the forest strategy 2 035 supports natural regeneration and the application of diverse felling methods beyond clearcutting. In the present study, natural regeneration was analysed in mixed Scots pine stands on poor and relatively rich soils, after small clearcuts, shelterwood cutting and gap fellings (with or without soil preparation), with respect to tree species composition, species abundan

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21

Outerelo,, Raimundo, Purificación Gamarra, and Sergi Trócoli. "The sarcosaprophilous Staphylinidae (Coleoptera) of Sant Llorenç del Munt i l’Obac Natural Park, Barcelona, Spain." Boletín de la Real Sociedad Española de Historia Natural 114-2020 (2020): 5–18. http://dx.doi.org/10.29077/bol.114.ce01.outerelo.

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Data regarding the community of sarcosaprophilous Staphylinidae (Coleoptera) associated with pig carcass in Sant Llorenç del Munt i L’Obac Natural Park Barcelona, northwest of the Iberian Peninsula are presented. For the study, 4 traps were used, baited with pig remains placed in water, located in 4 different habitats, hanging 1.5 m from the ground. 68 samples were taken from february to december 2018. 843 individuals belonging to 17 species, belonging to5 subfamilies (10 Aleocharinae, 3 Staphylininae, 2 Omaliinae, 1 Proteininae, and 1 Tachyporinae) were captured, presenting their greatest abu

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22

Afun, J. V. K., D. E. Johnson, and A. Russell-Smith. "Weeds and natural enemy regulation of insect pests in upland rice; a case study from West Africa." Bulletin of Entomological Research 89, no. 5 (1999): 391–402. http://dx.doi.org/10.1017/s0007485399000528.

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AbstractEffects of five weed management regimes on abundance of weeds, insect pests, generalist predators and on pest damage and rice yield were investigated in upland rice in Côte d‘Ivoire over two years. In both years there was a highly significant negative correlation between weed biomass and grain yield across all treatments. Only two pest insect groups,Nephotettixspp. (Cicadellidae) and seed sucking Heteroptera, were consistently more abundant in unweeded plots and had a consistent significant positive correlation between abundance and weed biomass across all seven treatments. These polyp

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23

Kennedy, Philippa R., Charlotte Barthen, David J. Williamson, et al. "Genetic diversity affects the nanoscale membrane organization and signaling of natural killer cell receptors." Science Signaling 12, no. 612 (2019): eaaw9252. http://dx.doi.org/10.1126/scisignal.aaw9252.

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Genetic diversity in human natural killer (NK) cell receptors is linked to resistance and susceptibility to many diseases. Here, we tested the effect of this diversity on the nanoscale organization of killer cell immunoglobulin-like receptors (KIRs). Using superresolution microscopy, we found that inhibitory KIRs encoded by different genes and alleles were organized differently at the surface of primary human NK cells. KIRs that were found at low abundance assembled into smaller clusters than those formed by KIRs that were more highly abundant, and at low abundance, there was a greater proport

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24

Pan, Jianfeng, Qiong Wang, Xiaoyan Guo, et al. "Local patterns of arbuscular mycorrhizal fungal diversity and community structure in a natural Toona ciliata var. pubescens forest in South Central China." PeerJ 9 (May 3, 2021): e11331. http://dx.doi.org/10.7717/peerj.11331.

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Toona ciliata var. pubescens (Toona in Meliaceae) (Tc) is listed as an endangered species, and there are natural regeneration obstacles due to its long-term excessive exploitation and utilization. Arbuscular mycorrhizal fungi (AMF) can produce beneficial effects for plant growth and natural regeneration. However, the characteristics of the AMF community in natural Tc forests are poorly understood. The Illumina PE250 high-throughput sequencing method was used to study the characteristics of the AMF community in the rhizosphere soil and roots associated with three dominant tree species (Tc; Padu

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25

Lapointe, Stéphane, Luc Bélanger, Jean-François Giroux, and Bernard Filion. "Effects of Plant Cover Improvements for Nesting Ducks on Grassland Songbirds." Canadian Field-Naturalist 117, no. 2 (2003): 167. http://dx.doi.org/10.22621/cfn.v117i2.678.

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Several islands located along the St. Lawrence River in southern Quebec have been used as natural pastureland by cattle for decades. Recently, a rest-rotation grazing system and dense nesting cover were established on four islands near Varennes to improve duck nesting conditions. The effects of these two plant cover improvements on the abundance of grassland songbirds were assessed through four treatments: (1) idle fields with no vegetation improvement but exclusion of cattle (IDLE), (2) improved pastures with seeding of forage plants for cattle (IMPP), (3) dense seeded nesting cover fields im

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26

Kelly, Colleen K., Michael G. Bowler, Oliver Pybus, and Paul H. Harvey. "PHYLOGENY, NICHES, AND RELATIVE ABUNDANCE IN NATURAL COMMUNITIES." Ecology 89, no. 4 (2008): 962–70. http://dx.doi.org/10.1890/07-0322.1.

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27

Blanc, Frédéric, Luke Sperrin, David A. Jefferson, Shane Pawsey, Melanie Rosay, and Clare P. Grey. "Dynamic Nuclear Polarization Enhanced Natural Abundance 17O Spectroscopy." Journal of the American Chemical Society 135, no. 8 (2013): 2975–78. http://dx.doi.org/10.1021/ja4004377.

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28

PRESTON, T. "The measurement of stable isotope natural abundance variations." Plant, Cell and Environment 15, no. 9 (1992): 1091–97. http://dx.doi.org/10.1111/j.1365-3040.1992.tb01659.x.

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29

Natarajan, Savithiry S. "Natural variability in abundance of prevalent soybean proteins." Regulatory Toxicology and Pharmacology 58, no. 3 (2010): S26—S29. http://dx.doi.org/10.1016/j.yrtph.2010.08.005.

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30

Eckert, Hellmut, and James P. Yesinowski. "Sulfur-33 NMR at natural abundance in solids." Journal of the American Chemical Society 108, no. 9 (1986): 2140–46. http://dx.doi.org/10.1021/ja00269a004.

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31

Hall, L. D., A. G. Webb, and S. C. R. Williams. "Natural abundance 13C imaging incorporating multiple-echo acquisition." Journal of Magnetic Resonance (1969) 81, no. 3 (1989): 565–69. http://dx.doi.org/10.1016/0022-2364(89)90094-2.

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32

Beckmann, N., and S. Müller. "Natural-abundance 13C spectroscopic imaging applied to humans." Journal of Magnetic Resonance (1969) 93, no. 1 (1991): 186–94. http://dx.doi.org/10.1016/0022-2364(91)90041-q.

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33

Nöth, Heinrich, and Bernd Wrackmeyer. "natural-abundance 15N NMR of azole-borane adducts." Journal of Magnetic Resonance (1969) 69, no. 3 (1986): 492–95. http://dx.doi.org/10.1016/0022-2364(86)90161-7.

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34

Hock, F., V. Ball, Y. Dong, et al. "Natural-Abundance Oxygen-17 NMR Spectra of Ozonides." Journal of Magnetic Resonance, Series A 111, no. 2 (1994): 150–54. http://dx.doi.org/10.1006/jmra.1994.1240.

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35

Weigelt, J., and G. Otting. "1H-Detected INEPT-INADEQUATE at Natural 13C Abundance." Journal of Magnetic Resonance, Series A 113, no. 1 (1995): 128–30. http://dx.doi.org/10.1006/jmra.1995.1067.

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36

Weigelt, J., and G. Otting. "13C-Relayed 13C HSQC at Natural Isotopic Abundance." Journal of Magnetic Resonance, Series A 116, no. 1 (1995): 133–34. http://dx.doi.org/10.1006/jmra.1995.1201.

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37

Vasquez, P. C., D. W. Boykin, and A. L. Baumstark. "17O NMR spectroscopy (natural abundance) of heterocycles: Anhydrides." Magnetic Resonance in Chemistry 24, no. 5 (1986): 409–14. http://dx.doi.org/10.1002/mrc.1260240504.

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38

Forsman, Jukka T., Pasi Reunanen, Jukka Jokimäki, and Mikko Mönkkönen. "The effects of small-scale disturbance on forest birds: a meta-analysis." Canadian Journal of Forest Research 40, no. 9 (2010): 1833–42. http://dx.doi.org/10.1139/x10-126.

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Small-scale disturbance is a significant process in all major forest biomes. Some silvicultural practices, particularly group selection harvesting, intend to emulate natural small-scale disturbance by harvesting small clearcuts in the continuous forest. We conducted a meta-analysis on the effects of small-scale harvesting on North American breeding forest birds. We extracted species richness and relative abundance of several functional bird groups and guilds from published studies and compared them between gap-dominated and unlogged forest as a function of forest type and the size and age of t

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39

Ritz, P., T. J. Cole, P. S. Davies, G. R. Goldberg, and W. A. Coward. "Interactions between 2H and 18O natural abundance variations and DLW measurements of energy expenditure." American Journal of Physiology-Endocrinology and Metabolism 271, no. 2 (1996): E302—E308. http://dx.doi.org/10.1152/ajpendo.1996.271.2.e302.

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Appropriate corrections for 2H and 18O natural abundance are necessary in energy expenditure measurements with the doubly labeled water (DLW) method. The contribution of natural abundance variations to errors in the method is generally ignored if an appropriate dose level is given. Calculation of the appropriate dose level assumes that 2H and 18O natural abundance values are covariant and have a fixed slope. This study has investigated the between- and within-subject natural abundance variations, the latter over periods of time similar to those used in DLW experiment. Although 2H and 18O natur

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40

Jiao, Nianzhi, Yanlin Zhao, Tingwei Luo, and Xiulin Wang. "Natural and anthropogenic forcing on the dynamics of virioplankton in the Yangtze river estuary." Journal of the Marine Biological Association of the United Kingdom 86, no. 3 (2006): 543–50. http://dx.doi.org/10.1017/s0025315406013452.

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Seasonal investigation of virus dynamics by flow cytometry was conducted in the Yangtze river estuarine area in April, August, November 2002 and February 2003, and a supplemental investigation in the inner estuary and downstream of the river was conducted in October 2005. The majority of the total viral abundance was bacteriophage and only 5.4% of the total was algal virus. Total viral abundance varied with season and location, ranging from 6.75×105–1.68×107 particles/ml, and the virus:bacterium ratio (VBR) ranged from 1.52 to 72.02 with a mean of 8.7. In the present study, viral abundance pea

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41

Oliveira, Luísa, Isabel Borges, Dário Silva, Ana C. Durão, and António O. Soares. "Abundance of Tuta absoluta (Meyrick, 1917) and its natural enemies on tomato crops in greenhouses of different production modes (Azores, Portugal) (Lepidoptera: Gelechiidae)." SHILAP Revista de lepidopterología 51, no. 201 (2023): 59–70. http://dx.doi.org/10.57065/shilap.437.

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Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) is a major pest of tomato (Solanum lycopersicum L.) crops produced in the Azorean greenhouses. Despite the major concerns, no systematic study is available to describe population dynamics of T. absoluta and its natural enemies. The objective of this study was to compare the abundance of the pest (eggs and larvae) and its native natural enemies, in greenhouses of tomato crops produced under different production modes (biological, traditional and intensive). A sampling program was carried out during 2020-2021 and two production seasons of

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42

Powell, Alexis F. L. A. "Effects of Prescribed Burns and Bison (Bos Bison) Grazing on Breeding Bird Abundances in Tallgrass Prairie." Auk 123, no. 1 (2006): 183–97. http://dx.doi.org/10.1093/auk/123.1.183.

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Abstract Grassland birds have declined more than any other avian assemblage in North America, with nearly every species showing negative population trends. In the Flint Hills of Kansas, the largest remnant of the tallgrass prairie biome, annual spring burning of rangeland has recently replaced burning every 2–3 years. I examined effects of different burning and bison (Bos bison) grazing regimes on June abundances of seven bird species using a 23-year data set from the Konza Prairie Biological Station. Fire significantly affected the abundances of six of the seven species. Effects varied among

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Ram, Rachna J., Nathan C. VerBerkmoes, Michael P. Thelen, et al. "Community Proteomics of a Natural Microbial Biofilm." Science 308, no. 5730 (2005): 1915–20. http://dx.doi.org/10.1126/science.1109070.

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Using genomic and mass spectrometry–based proteomic methods, we evaluated gene expression, identified key activities, and examined partitioning of metabolic functions in a natural acid mine drainage (AMD) microbial biofilm community. We detected 2033 proteins from the five most abundant species in the biofilm, including 48% of the predicted proteins from the dominant biofilm organism, Leptospirillum group II. Proteins involved in protein refolding and response to oxidative stress appeared to be highly expressed, which suggests that damage to biomolecules is a key challenge for survival. We val

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44

Soysa, Indra de. "Ecoviolence: Shrinking Pie, or Honey Pot?" Global Environmental Politics 2, no. 4 (2002): 1–34. http://dx.doi.org/10.1162/152638002320980605.

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Some claim that the scarcity of natural resources, particularly renewable resources, is a “causal mechanism” behind civil war. Recent work in development studies and political science suggest that relative abundance of natural resources cause broad-based socio-economic and political problems, while some using microeconomic theories even blame abundance directly for motivating “loot-seeking” rebellion and allowing the finance of large-scale armed violence. Using a host of alternative measures of natural capital wealth, disaggregated as renewable and nonrenewable, this study finds that an abunda

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45

Hung, Keng-Lou James, Jennifer M. Kingston, Adrienne Lee, David A. Holway, and Joshua R. Kohn. "Non-native honey bees disproportionately dominate the most abundant floral resources in a biodiversity hotspot." Proceedings of the Royal Society B: Biological Sciences 286, no. 1897 (2019): 20182901. http://dx.doi.org/10.1098/rspb.2018.2901.

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Most plant–pollinator mutualisms are generalized. As such, they are susceptible to perturbation by abundant, generalist, non-native pollinators such as the western honey bee ( Apis mellifera ), which can reach high abundances and visit flowers of many plant species in their expansive introduced range. Despite the prevalence of non-native honey bees, their effects on pollination mutualisms in natural ecosystems remain incompletely understood. Here, we contrast community-level patterns of floral visitation by honey bees with that of the diverse native pollinator fauna of southern California, USA

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46

Suheriyanto, Dwi, Soemarno, Bagyo Yanuwiadi, and Amin Setyo Leksono. "Soil Arthropods Diversity in Manggis Natural Reserve and Coffee Agroforestry System Kediri Regency, Indonesia." Applied Mechanics and Materials 747 (March 2015): 341–44. http://dx.doi.org/10.4028/www.scientific.net/amm.747.341.

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Soil arthropods have role as herbivores, decomposers, predators and bioindicators of the various functions on ecosystems. Soil arthropods have an important role in increasing and maintaining soil productivity through the decomposition process of organic matter. The research was conducted to investigate abundance and diversity of soil arthropods in Manggis Natural Reserve and Coffee Agroforestry System. Hand-shorting methods and pitfall traps were used to catch soil arthropods. The abundance of soil arthropods were analyzed into diversity index. The result showed that the Natural Reserve has hi

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47

Potapova, Marina, Daiana Markarian, Abigail King, and Laura Aycock. "Microbial Eukaryotes in Natural and Artificial Salt Marsh Pools." Coasts 4, no. 2 (2024): 287–305. http://dx.doi.org/10.3390/coasts4020015.

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Microscopic eukaryotes are important components of coastal wetland ecosystems. The goal of this study was to investigate the diversity of microeukaryotes in the tidal pools of a New Jersey salt marsh and to compare the assemblages of natural and artificial pools excavated for controlling mosquito populations. We evaluated microeukaryotic assemblages using the amplicon sequencing of 18S and rbcL DNA markers and the microscopic identification of diatoms in water and sediment samples. 18S unique amplicon sequence variants (ASV) representing ciliates, dinoflagellates, diatoms, and cercozoans were

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48

Bodinof Jachowski, CM, BE Ross, and WA Hopkins. "Evaluating artificial shelter arrays as a minimally invasive monitoring tool for the hellbender Cryptobranchus alleganiensis." Endangered Species Research 41 (February 13, 2020): 167–81. http://dx.doi.org/10.3354/esr01014.

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Hellbenders Cryptobranchus alleganiensis are critically imperiled amphibians throughout the eastern USA. Rock-lifting is widely used to monitor hellbenders but can severely disturb habitat. We asked whether artificial shelter occupancy (the proportion of occupied shelters in an array) would function as a proxy for hellbender abundance and thereby serve as a viable alternative to rock-lifting. We hypothesized that shelter occupancy would vary spatially in response to hellbender density, natural shelter density, or both, and would vary temporally with hellbender seasonal activity patterns and ti

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Gao, Dandan, Faming Wang, Jian Li, Shiqin Yu, Zhian Li, and Jie Zhao. "Soil nematode communities as indicators of soil health in different land use types in tropical area." Nematology 22, no. 6 (2020): 595–610. http://dx.doi.org/10.1163/15685411-00003325.

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Summary The study of soil nematode communities is a powerful tool that has been widely used as an indicator of soil health. This study explored whether soil nematode composition of different land use types could be used as a baseline to indicate the soil health of both natural and anthropogenic ecosystems. The soil nematode community compositions were documented for five land use types in tropical China: bare land, secondary forest, old forest, eucalyptus plantation and litchi orchards. The first three land use types are natural ecosystems and considered as a vegetation succession, whereas the

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Lubiarz, Magdalena. "Comparing densities of spider mites (Tetranychidae) and predatory mites (Phytoseiidae) on the common oak (Quercus robur L.) in forests of natural and industrial areas." Forest Research Papers 77, no. 3 (2016): 177–85. http://dx.doi.org/10.1515/frp-2016-0020.

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Abstract This paper presents results of studies conducted in the forest areas of the Polesie National Park and in the surroundings of the chemical producer Zakłady Azotowe in the town of Puławy on the abundance of mites from the families Tetranychidae and Phytoseiidae. These studies were conducted on eight different sites in the years 2002–2004 and aimed at answering the question of whether mite abundance is related to factors such as area, site and year. In total, 8894 specimen of the spider mite family and 1835 specimen of the predatory mite family were collected. Spider mites were more abun

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