Academic literature on the topic 'Biotopic diversity'
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Journal articles on the topic "Biotopic diversity"
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Kininmonth, Stuart, Thorsten Blenckner, Susa Niiranen, James Watson, Alessandro Orio, Michele Casini, Stefan Neuenfeldt, Valerio Bartolino, and Martin Hansson. "Is Diversity the Missing Link in Coastal Fisheries Management?" Diversity 14, no. 2 (January 28, 2022): 90. http://dx.doi.org/10.3390/d14020090.
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Fisheries management has historically focused on the population elasticity of target fish based primarily on demographic modeling, with the key assumptions of stability in environmental conditions and static trophic relationships. The predictive capacity of this fisheries framework is poor, especially in closed systems where the benthic diversity and boundary effects are important and the stock levels are low. Here, we present a probabilistic model that couples key fish populations with a complex suite of trophic, environmental, and geomorphological factors. Using 41 years of observations we model the changes in eastern Baltic cod (Gadus morhua), herring (Clupea harengus), and Baltic sprat (Sprattus sprattus balticus) for the Baltic Sea within a Bayesian network. The model predictions are spatially explicit and show the changes of the central Baltic Sea from cod- to sprat-dominated ecology over the 41 years. This also highlights how the years 2004 to 2014 deviate in terms of the typical cod–environment relationship, with environmental factors such as salinity being less influential on cod population abundance than in previous periods. The role of macrozoobenthos abundance, biotopic rugosity, and flatfish biomass showed an increased influence in predicting cod biomass in the last decade of the study. Fisheries management that is able to accommodate shifting ecological and environmental conditions relevant to biotopic information will be more effective and realistic. Non-stationary modelling for all of the homogeneous biotope regions, while acknowledging that each has a specific ecology relevant to understanding the fish population dynamics, is essential for fisheries science and sustainable management of fish stocks.
2
Belitskaya, M. N., I. R. Gribust, V. E. Drevin, Z. Ch Morozova, and E. A. Zenina. "Phyllophages biotopic distribution in sparsely wooded regions plantations." IOP Conference Series: Earth and Environmental Science 1138, no. 1 (February 1, 2023): 012021. http://dx.doi.org/10.1088/1755-1315/1138/1/012021.
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Abstract The study of the main woody plants entomofauna diversity peculiarities in sparsely wooded regions with arid climate is an urgent scientific direction and the basis for the design of ecologically balanced multifunctional plantations in the arid zone. The presented materials illustrate the peculiarities of the arthropod phyllophages diversity of trees growing in the FSC of Agroecology RAS dendrological collections. The species and quantitative abundance of individual ecological and trophic groups of fauna, types of damage to plants’ different parts of the Ulmaceae, Fabaceae, Rosaceae families and a number of others were revealed. The structure of the dendrophages community was assessed. The insects’ orders distribution features according to the types of plantations were analyzed.
3
Koval, Nelya, Sergii Glotov, and Vasyl Chumak. "Rove beetle (Coleoptera: Staphylinidae) communities of the upper forest line of the Ukrainian Carpathians: structure and biotopic distribution (on the example of the Polonynskyi ridge)." GEO&BIO 2021, no. 21 (December 30, 2021): 196–210. http://dx.doi.org/10.15407/gb2115.
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The results of studies of species diversity, community structure, and biotopic distribution of rove beetles (Insecta: Coleoptera: Staphylinidae) at the upper forest line on the Yavirnyk and Stinka mountain ridges (Polonynskyi massif, Ukrainian Carpathians) are presented. As a result, 91 species of Staphylinidae belonging to 53 genera and 10 subfamilies were found. In particular, 71 species were found on Yavirnyk, and 69 species on Stinka. The largest number of species was noticed on meadows of both ridges: 48 species on Yavirnyk and 51 on Stinka. The lowest number of species was recorded in in ecotones: 39 species on Yavirnyk and 40 on Stinka. The rove beetle dominant complex of the Yavirnyk ridge includes four species, including two eudominants—Eusphalerum alpinum and Philonthus politus, and two dominants—Eusphalerum anale and Philonthus decorus. The dominant complex of the Stinka ridge includes six species: three eudominants—Eusphalerum alpinum, Ocypus macrocephalus, and Staphylinus erythroptery, and three dominants in almost equal proportions—Anotylus mutator, Dinothenarus fossor, and Philonthus decorus. All indices of species richness and diversity of the rove beetle communities have higher values on the Stinka ridge, and they are the highest in forest biotopes of both mountain ridges, which indicates their high ecological quality and stability. This is also confirmed by the highest rate of originality of the species composition of Staphylinidae in these areas. The most similar in species composition are the rove beetle communities of meadows. The original fauna of rove beetles of Yavirnyk is represented by 25 species, and of Stinka by 19 species. Among the species of Staphylinidae, 18 occurred in all biotopes of the upper forest line, which is 19.8% of the total number of species found here. In terms of trophic specialization, predators that live in the forest floor, among remains of organic origin and in fungi predominate in all biotopes of the upper forest line (UFL). In terms of biotopic distribution, eurytopic species predominate.
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Lisovets, O. I., D. S. Ganzha, and O. O. Mylnikova. "Biotopic diversity and ecomorphic analysis of the Gryshkiv lis tract (Poltava)." Питання степового лісознавства та лісової рекультивації земель 50 (October 29, 2021): 22–32. http://dx.doi.org/10.15421/442103.
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The study of ecosystem and biotope biodiversity of park ecosystems allows to identify the most valuable plant objects in their composition, to assess the degree of stability of existing groups and to identify current threats of anthropogenic impact on them. Gryshkiv Lis tract (Poltava, Kyiv region) is one of the centers of natural phytodiversity conservation and is an array of deciduous forests with an area of about 50 hectares, located adjacent to residential areas of the city. Research materials were collected during field expeditions in August–September 2021 using generally accepted geobotanical methods. The list of higher plants found on the territory of the Gryshkiv Lis tract includes 154 species belonging to 3 classes, 51 families. The most numerous of them are Asteraceae – 19%, Poaceae – 14%, Rosaceae – 11% and Lamiaceae – 10%. There are two species of plants listed in the Red Book of Ukraine and seven species are regionally rare plants. One plant group was identified in the Green Book of Ukraine. Ecomorphic analysis of species showed that mesophytes, sciogeliophytes and mesotrophs predominate in the study area. Thus, the proportions of hygromorphs, heliomorphs and tropomorphs are close to the structure of the typical flora of the forest-steppe zone, which indicates favorable development conditions for zonal forest vegetation. However, in the spectrum of cenomorphs the share of ruderants is quite significant – almost 20%, the percentage of adventitious species is close to 3%. This indicates a significant anthropogenic transformation of the flora of the surveyed object. Habitat classification was carried out in accordance with the structure of the National Catalog of Habitats of Ukraine. Studies have shown that in the tract "Grishkiv Lis" there are at least 7 habitats, including forest (Eastern European mesophilic eutrophic deciduous forests of forest-steppe and steppe zones), swampy (reedbeds normally without freestanding water, beds of large Carex spp.), shrubbery (lowland and collinar riverine willow scrub, Central European subcontinental thickets), grassy (mesophile fringes), synanthropic (ruderal biotops of perennial nitrophilic type grasses). The dominant habitat of the Gryshkiv Lis tract is natural deciduous forests. The studied object represents a characteristic type of vegetation for the forest-steppe zone – maple-linden oak wood (anthropogenically transformed) with elements of waterlogging. Its central areas are represented by stands with a high degree of preservation of the structure and have good prospects for preservation and restoration with moderate efforts. Recommendations for the preservation of floristic diversity and vegetation of the Gryshkiv Lis tract include the introduction of a system of biotechnical measures to support ecosystems, including restrictions and regulation of recreation, elimination of natural landfills, sewage disposal and elimination of unauthorized buildings. The territory has environmental, scientific, aesthetic and recreational significance. Creation here of a protected area will help preserve the coenotic, landscape and biological diversity of Poltava region.
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H., Hushtan. "The diversity of oribatid mites (Acari: Oribatida) of grassland ecosystems of Latorica and Borzhava river basins." Proceedings of the State Natural History Museum, no. 34 (August 20, 2018): 75–80. http://dx.doi.org/10.36885/nzdpm.2018.34.75-80.
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The diversity of oribatid mites (Acari: Oribatida) of grassland ecosystems of Latorica and Borzhava river basins As a result of our research, taxonomic and ecological diversity of oribatid mites in the ecosystems of the basins of the Latoritsa and Borzhava rivers has been established. For the studied territory, the species composition of the oribatid mites is established, which includes 109 species (57 genus, 40 families). The dominant qualitatively are the following families of oribatid mites: Oppiidae, Suctobelbidae, Brachychthoniidae, Scheloribatidae, Oribatulidae. The richest qualitative composition is represented by the Oribatida of the following genera: Suctobelbella, Scheloribates, Oppiella, Achipteria, Ramusella, Steganacarus, Notrus, Scutovertex, Ceratozetes, Punctoribates. The ecological diversity of oribatid mites is investigated. There are 12 morphoekotypes (METs) of Oribatida for the Latoritsa and Borzhavy river basins. The most represented are 4 METs (10-26 species per morphoecotype). For the investigated ecosystems, representatives of 4 biotope groups of oribatid mites: forest, forest-meadow, meadow and eurytopic species. The studied groups of Oribatids are 6 ecological groups by hygropreferendum. These include hygrophilous, hygro-mesophilous, mesophilous, meso-xerophilous, xerophilous and eurybiontic. The most diverse in terms of quality are the forest biotopic group and species-hygrophilous (31 and 30 species, respectively).
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Holloway, J. D. "Macrolepidoptera diversity in the Indo-Australian tropics: geographic, biotopic and taxonomic variations." Biological Journal of the Linnean Society 30, no. 4 (April 1987): 325–41. http://dx.doi.org/10.1111/j.1095-8312.1987.tb00306.x.
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Anissimova, Olga V. "Euastrum (Zygnematophyceae) from Europea: diversity, ecology, distribution." Issues of modern algology (Вопросы современной альгологии), no. 1(25) (2021): 85–92. http://dx.doi.org/10.33624/2311-0147-2021-1(25)-85-92.
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Euastrum is one of the most important genus of desmids, have been selected as widely represented in the flora of the water bodies of Europe. The algal samples were collected from different localities of ten regions of European part of Russia. Cells of 50 species of Euastrum was examined in scanning electron microscope. Cell wall of the Euastrum have some specific pits, which are called scrobicles. Its size, shape and quantity vary from species to species. Out of more than 250 species Euastrum, described 73 taxa for which the preference for acidity of the environment, biotopic confinement, and distribution over Europe and other continents are known. The dictionary of the most used terms is given.
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Tsapko, N. V. "IXODID TICKS OF THE REPUBLIC OF ABKHAZIA: DISTRIBUTION, NUMBER AND ECOLOGICAL FEATURES." Medical parasitology and parasitic diseases, no. 1 (2024): 8–15. http://dx.doi.org/10.33092/0025-8326mp2024.1.8-15.
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The article analyzes the biological diversity of the fauna of the ticks of the Republic of Abkhazia. Their biotopic confinement and parasite-host bonds at different stages of ontogenesis are considered. According to the materials of the authors ' collections, literary sources and partially the collections of the FKUZ Stavropol antiplague institute of Rospotrebnadzor for the territory of Abkhazia, data on 14 ticks species are given. Comparatively low species diversity is due to insufficient study of the ticks of Abkhazia. Key words: ticks, host-parasite relationships, tick-borne infections, Abkhazia.
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Curtean-Bănăduc, Angela. "Biotope Determinants of EPT Assamblages Structure – Târnava Watershed (Transylvania, Romania) Case Study." Transylvanian Review of Systematical and Ecological Research 17, no. 2 (December 1, 2015): 95–104. http://dx.doi.org/10.1515/trser-2015-0067.
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Abstract This study aims to analyze the biotopic factors affecting the EPT assemblage diversity in the rivers of the Târnava Watershed. Our research revealed that the high diversity of the Plecoptera communities is associated with river reaches with boulder and cobble lithological substrate, accentuated slope and natural bank dynamics, and also it is directly correlated with dissolved oxygen and inversely correlated with chemical and biochemical oxygen demand, total hardness, nitrates and total nitrogen in the water. The high diversity of the Trichoptera communities is associated with water which presents moderate quantities of nutrients (total phosphorus, phosphates) and with river reaches with heterogeneous structures (where runs and bends were present). The diversity of the Ephemeroptera communities is positively correlated with the multiannual average flow and riverbed width.
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Mikhaylova, T. V., I. S. Mescheryakova, T. N. Demidova, M. I. Kormilitsyna, D. A. Kvasov, Yu I. Stepkin, and D. B. Trankvilevsky. "Features of the Biotopic Distribution of Different Species of Small Mammals and their Role in Supporting the Natural Foci of Tularemia in the North-Eastern Part of the Voronezh Region." Epidemiology and Vaccine Prevention 14, no. 3 (June 20, 2015): 37–41. http://dx.doi.org/10.31631/2073-3046-2015-14-3-37-41.
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Different species of small mammals (SM) (539 total), cached in Voronezh region, were examined for antigen and DNA of Francisella tularensis. The basic species of SM involved in circulation of F. tularensis were revealed. The features of the biotopic distribution of infected SM on the territory of the natural foci were shown. The diversity of species SM ensures long operation and epizootic activity of the natural foci of tularemia.
Dissertations / Theses on the topic "Biotopic diversity"
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Galada, Ncebakazi. "Exploring diversity and ecology of nonarchaea in hydrothermal biotopes." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&.
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The Nanoarchaeota were proposed as the fourth archaeal sub-division in 2002, and the only fully characterized nanoarchaeon was found to exist in a symbiotic association with the crenarchaeote, Ignicoccus sp. This nanoarchaeote, named Nanoarchaeum equitans could not be detected with &ldquouniversal&rdquo
archaeal 16S PCR primers and could only be amplified using specifically designed primers. In order to identify and access a wide diversity of archaeal phylotypes a new set of &ldquo
universal&rdquo
archaeal primers A571F (5&rsquo
-GCY TAA AGS RIC CGT AGC-3&rsquo
) and UA1204R (5&rsquo
-TTM GGG GCA TRC IKA CCT-3&rsquo
) was designed, that could amplify the 16S rRNA genes of all four archaeal sub-divisions. Using these primers community DNA was amplified from Chinese and New Zealand hydrothermal systems.
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Della, Bella Valentina. "COMPOSIZIONE TASSONOMICA, ORGANIZZAZIONE FUNZIONALE E STRUTTURA IN TAGLIA DELLA MACROFAUNA A INVERTEBRATI DI BIOTOPI TEMPORANEI E PERMANENTI DEL LITORALE TIRRENICO - TAXONOMIC COMPOSITION, FUNCTIONAL ORGANIZATION AND SIZE STRUCTURE OF MACROINVERTEBRATE COMMUNITIES IN TEMPORARY AND PERMANENT PONDS OF THE TYRRHENIAN COAST." Doctoral thesis, La Sapienza, 2005. http://hdl.handle.net/11573/916841.
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Virbalytė, Ieva. "Januliškio girininkijos medynų vertinimas biologinės įvairovės požiūriu." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120620_151042-91167.
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Magistro darbe vertinama medynų įvairovė biologinės įvairovės požiūriu ir nustatomos teritorijos palankiausios biologinei įvairovei ir jos apsaugai.
Darbo objektas – VĮ Švenčionėlių miškų urėdijos Januliškio girininkijos teritorija.
Darbo tikslas – įvertinti Januliškio girininkijos medynus biologinės įvairovės požiūriu ir nustatyti palankiausiais biologinei įvairovei ir jos apsaugai teritorijas.
Darbo metodai – 1975 m., 1985 m., 1999 m., ir 2009 m. miškotvarkų duomenų analizavimas ir nustatytų medynų rūšinės įvairovės rodiklių vertinimas, bei remiantis girininkijoje esančiomis saugomomis teritorijomis, kertinėmis miško buveinėmis ir retomis rūšimis, charakterizuojama girininkijos biologinė įvairovė ir nustatomos jos koncentracijos vietos.
Darbo rezultatai. Atlikus tyrimus nustatyta, kad Januliškio girininkijoje tenkančio miško masyvo dalyje 1975 m. augo 6, 1985 m. – 7, o 1999 – 2009 m. po 9 medžių rūšių. Tai lėmė liepos, baltalksnio, ąžuolo, uosio, gluosnio ir maumedžio atsiradimas medynuose. Nagrinėjimu laikotarpiu yra pastebimas pušynų mažėjimas, jie sumažėjo 6,4%, tačiau tuo pačiu laikotarpiu yar fiksuojamas eglynų kiekio didėjimas medynų sudėtyje. Jų kiekis medyne padidėjo 4%. Nagrinėtų įvairovės, proporcingumo bei vyravimo rodiklių dinamika rodo medynų rūšinės įvairovės didėjimą iki 1985 m. ir mažėjimą po 1985 m. Nagrinėjant atskirų augaviečių medynų rūšinės įvairovės dinamiką 1975 – 2009 m., pastebėta, kad didžiausia rūšinė įvairovė buvo Nb, Nc, Lc ir Uc augavietėse... [toliau žr. visą tekstą]In this final master degree work the stands of Januliškis Forestry are evaluated from the perpective of biodiversity and the most favorable environment for biodiversity and it‘s protection is determined. The object of the work – The teritory of SE Švenčionėliai State Forest Januliškis Forestry. The aim of the study – To evaluate Januliškis Forestry stands from the perspective of biodiversity and to determine the most favorable teritories for biodiversity and it‘s protection. Working methods – the analysis of 1975 yr., 1985 yr., 1999 yr., and 2009 yr. data about forest order, the assessment of stands‘ species diversity rates and the characterization of the forestry biological diversity and determination of concentration points based on protected teritories, key biotopes and rare species that are found in the teritory of particular forestry. Study results – The reasearch showed that in the part of the forest which belongs to Juniliškis Forestry in 1975 there were 6 tree species, in 1985 – 7, and in 1999 – 2009 there could be found 9 tree species. This happened due to linden, gray alder, oak, ash, willow and larch stands appearance. In the analyzed period the decrease in number of pines by 6,4% can be observed, on the other hand, at the same time the increase in number of spruces by 4 % is traced. The dynamics of analyzed diversity, proportion and predominance rates indicates the growth of stands‘ species diversity till 1985 and it‘s abatement after 1985. While analysing the... [to full text]
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Renner, Swen Christoph. "Structure and diversity of cloud forest bird communities in Alta Verapaz, Guatemala, and implications for conservation." Doctoral thesis, [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969959478.
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Burkartová, Kateřina. "Využití mikrobiálních komunit jako markeru podmínek v podzemních biotopech." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-368994.
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The amount of data obtained by barcoding of prokaryotic 16S rDNA from natural habitats is increasing exponentially. Thus, methods enabling us to extract useful information from these data are of increasing importance. In this thesis microbial communities from water, sludge and drilling dust were analyzed by 16S rDNA sequencing in three geologically well described sedimentary aquifers in Bohemian Massif. The main goal of this research was to establish how different analytical approaches can be useful in interpretation of groundwater biogeochemical processes. Three approaches were used: First, taxonomy and metabolic traits of the most abundant microorganisms were assessed. Second, ordination methods showing metabolic and taxonomic variability between communities were used. Last the analysis of phylogenetic dissimilarity using UniFrac metrics was performed. When analyzing individual localities separately, the shift in microbial community composition corresponds with the change of environmental conditions. The unconstrained ordination method based on the variability in metabolic traits indicated, that sludge samples are more informative than water samples when asking which electron donor is used in microbial communities. On the other hand, unconstrained ordination methods were useless when the...
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Makhalanyane, Thulani Peter. "The diversity of key anabolic genes in antarctic hypolithons." Thesis, 2009. http://hdl.handle.net/11394/3337.
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>Magister Scientiae - MScAntarctica is known for its pristine environments. A variety of unsuitable environmental conditions were once thought to render the continent unsuitable for sustaining life. However, metagenomic data have revealed a wealth of species diversity in a range of biotopes.Hypolithons, photosynthetic communities which live under translucent rocks in climatically extreme environments, are an important input source for both carbon (C) and nitrogen (N) in this hyperarid desert environment. Microbial contribution to biogeochemical cycling resulting in fixation of both C and N remains poorly understood. Moreover, there is a reported close interplay between both cycles, with nitrogen being reported to be a limiting factor in carbon assimilation.In this study the diversity of C and N fixing organisms was investigated by using the cbbL and nifH genes as phylogenetic and functional markers. High Molecular weight metagenomic DNA and RNA was extracted from hypolithons. PCR amplification was carried out using cbbL (800 bp for red-like, 1,100 bp for green-like) and nifH (360 bp) gene specific primers.Resultant PCR products were used to construct libraries which were screened for correct sized inserts. Restriction Fragment Length Polymorphism (RFLP) was used to de-replicate clones prior to sequencing. Phylogenetic positions from both clone libraries were established by aligning nucleotide sequences and constructing similarity trees using NJ clustering methods.BLASTn results indicated the presence of previously uncultured organisms which contain cbbL and nifH genes. BLASTn results were characterized by low percentages of maximum identity (typically <95%), a potential indicator of novel taxa. Sequences from respective libraries clustered with cyanobacteria such as Nostoc, Scytonema, and Tolypothrix and α-, β-, and γ-Proteobacteria such as Azotobacter, Agrobacterium and Mesorhizobium. Generally sequence results indicate a largely homogenous, being dominated by specific taxa. Each group may contain potential keystone species, essential for both biogeochemical cycling in oligotrophic environment.
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JAHNOVÁ, Zuzana. "Společenstva epigeických brouků plantáží rychle rostoucích bylin a okolních biotopů." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-52828.
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The aim of the work was to study the communities of epigeic beetles in plantations of energetic plants (Dactylis glomerata, Arrhenatherum elatius, Phalaris arundinacea, Helianthus tuberosus) and in surrounding lawn biotope. The method of pitfall trapping was used for beetle sampling from 2008 to 2010 during the growing season. Carabid beetles (Carabidae) and rove beetles (Staphylinidae) were used as bioindicators. In total 69 species and 1789 individuals were captured and evaluated. Eurytopic species were more common than stenotopic in all habitats, also the value of the index of beetle communities was low in all plots. RDA analysis proved the influence of surrounding biotope on beetle communities. It was concluded that communities of epigeic beetles might be also affected by the climatic factors, long termed population fluctuations of individual species, edge effect and microclimate inside the vegetation.
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HAVEL, Jaroslav. "Zhodnocení přírodní hodnoty a ekosystémových služeb přírodě blízkých biotopů v intenzivně využívané zemědělské krajině." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-252429.
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My thesis is focused on valuation methods intensively used agricultural landscapes according to the importance of near-natural habitats in terms of their natural values and ecosystem services. This is done at four sites using pitfall traps, where there was a catch beetles (Carabidae). To evaluate the data I used indicators such as the Shannon index serenity. Procedures for calculating the ecological value of the area and the ecosystem services provided I processed according to the proposed method Seják et al., (2010). Rating I performed by BVM (,, habitat valuation methods "). Replacement cost method I used for the calculation of ecosystem services.
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KUBÁTOVÁ, Marcela. "Biodiverzita městského prostředí - Č. Krumlov jako model města světového kulturního dědictvé UNESCO (brownfields, městská zeleň a vybrané příměstské biotopy)." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-188494.
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Biodiversity of epigeic beetles in urban and suburban areas was studied in the area of Český Krumlov (a UNESCO World Heritage Site). Study confirmed the influence of urban-suburban gradient on the epigeic beetles. Every level of that gradient was characterized by indicator species.
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Linares-Palomino, Reynaldo. "Diversity and Ecological patterns of Bolivian deciduous forests." Doctoral thesis, 2009. http://hdl.handle.net/11858/00-1735-0000-0006-B65C-8.
Full textBooks on the topic "Biotopic diversity"
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Anne-Kathrin, Jackel, ed. BioPop: Funktionelle Merkmale von Pflanzen und ihre Anwendungsmöglichkeiten im Arten-, Biotop-, und Naturschutz : datenbank und expertensystem. Bonn-Bad Godesberg: Bundesamt für Naturschutz, 2006.
Find full textBook chapters on the topic "Biotopic diversity"
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Stouvenakers, Gilles, Peter Dapprich, Sebastien Massart, and M. Haïssam Jijakli. "Plant Pathogens and Control Strategies in Aquaponics." In Aquaponics Food Production Systems, 353–78. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15943-6_14.
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AbstractAmong the diversity of plant diseases occurring in aquaponics, soil-borne pathogens, such as Fusarium spp., Phytophthora spp. and Pythium spp., are the most problematic due to their preference for humid/aquatic environment conditions. Phytophthora spp. and Pythium spp. which belong to the Oomycetes pseudo-fungi require special attention because of their mobile form of dispersion, the so-called zoospores that can move freely and actively in liquid water. In coupled aquaponics, curative methods are still limited because of the possible toxicity of pesticides and chemical agents for fish and beneficial bacteria (e.g. nitrifying bacteria of the biofilter). Furthermore, the development of biocontrol agents for aquaponic use is still at its beginning. Consequently, ways to control the initial infection and the progression of a disease are mainly based on preventive actions and water physical treatments. However, suppressive action (suppression) could happen in aquaponic environment considering recent papers and the suppressive activity already highlighted in hydroponics. In addition, aquaponic water contains organic matter that could promote establishment and growth of heterotrophic bacteria in the system or even improve plant growth and viability directly. With regards to organic hydroponics (i.e. use of organic fertilisation and organic plant media), these bacteria could act as antagonist agents or as plant defence elicitors to protect plants from diseases. In the future, research on the disease suppressive ability of the aquaponic biotope must be increased, as well as isolation, characterisation and formulation of microbial plant pathogen antagonists. Finally, a good knowledge in the rapid identification of pathogens, combined with control methods and diseases monitoring, as recommended in integrated plant pest management, is the key to an efficient control of plant diseases in aquaponics.
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"Anadromous Sturgeons: Habitats, Threats, and Management." In Anadromous Sturgeons: Habitats, Threats, and Management, edited by Pierre Nellis, Jean Munro, Daniel Hatin, Gaston Desrosiers, Rachel D. Simons, and Frédéric Guilbard. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569919.ch6.
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<em>Abstract.</em>—The St. Lawrence estuarine transition zone (ETZ) harbors the only known concentrations of age-0 and early juveniles of the St. Lawrence Atlantic sturgeon and lake sturgeon populations. Past dredging and disposal operations conducted in the ETZ to deepen the navigation channel resulted in the creation of an extensive sand dune biotope near the juvenile sturgeon concentration areas. In order to characterize the dune biotope within a diversified set of biotopes in the ETZ, nine areas were selected for study, including two areas to cover the sand dune complex. The study objectives were (1) to identify the benthos assemblages of the ETZ and the main physical factors controlling them, (2) to measure the sampling areas’ biological characteristics and feeding potential for sturgeon, and (3) to compare the dune areas’ feeding potential with selected control areas. In 1999–2001, grab sampling was conducted at 141 stations to determine macrobenthos composition and sediment parameters. Depth, slope, and slope orientation were measured from multibeam sonar echosoundings. Salinity, current velocity, and tidal amplitude were provided by a hydrodynamic model of the ETZ. Benthos assemblages were determined using cluster analysis on taxon biomass. Four major assemblages were identified, all having Tubificidae as the dominant or subdominant taxon: zebra mussel <em>Dreissena polymorpha</em>, <em>Gammarus tigrinus</em>, Tubificidae, and <em>Capitella</em> sp. assemblages. A succession of the major assemblages was observed from the freshwater front to the upper mesohaline waters. Three minor assemblages, the Chironomidae, Physidae, and Cumacea, were concentrated in the upper oligohaline zone. Taxonomic richness was highest in areas with the lowest maximum salinity (0.0–0.5), and diversity was highest in areas with intermediate maximum salinities (0.5–2.0). The largest biomass values were found in areas with maximum salinities less than 0.5, in the zebra mussel assemblage. Controls and dune areas had similar macrobenthos richness and diversity, but dune areas had significantly lower densities and biomasses. Feeding potential for a given sturgeon life stage was measured as the sum of taxa biomasses standardized using the prey proportions in that life stage’s feeding regime. For age-0 Atlantic sturgeon and for all lake sturgeon life stages, all of which feed mostly on gammarids, the feeding potential of control and dune areas were not significantly different. For juvenile and subadult Atlantic sturgeon, which feed mostly on tubificids, the dune areas had a significantly lower feeding potential than the control areas. The lower feeding potential of the sand dune areas created by dredged sediment deposition is considered an important issue for the management of the St. Lawrence Atlantic sturgeon population.
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Vasantha Packiavathy, Issac Abraham Sybiya, Danaraj Jeyapragash, Dharmadhas Jeba Sweetly, and Arumugam Veera Ravi. "Marine Natural Products as Tools for Discovering New Antimicrobial Targets." In Frontiers in Antimicrobial Agents, 45–64. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815080148123030005.
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The discovery of drugs for human ailments has been greatly attributed to nature ever since the existence of mankind. Continuous isolation of metabolites from terrestrial resources leads to a bargaining effect on the synthesis of novel compounds. Remarkably, marine biotope, one of nature’s resources, accommodates approximately 75% of the global surface. To acclimatize in a marine environment characterized by unique circumstances that diverge from the individuals present in other habitation, marine organisms occasionally accumulate structurally distinctive bioactive secondary metabolites that are deficient in terrestrial organisms. Marine metabolites are currently employed as the key components in pharmacological research and drug discovery, acting as drugs and active lead molecules towards the development of novel antimicrobials. Numerous marine metabolites that are derived from macro and microorganisms have attained the level of clinical assessment. Hence, marine environments are considered tools for discovering new antimicrobial agents as they comprise a vast untapped reservoir of metabolite diversity.<br>
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Juhani Mikkola, Heimo. "Diversity of the Owl Species in the Amazon Region." In Ecosystem and Biodiversity of Amazonia [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94977.
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The Amazon basin is the largest tropical rainforest in the world covering almost 40 per cent of the South American continent. For centuries, its vastness and inaccessibility have been protecting this area. The general belief is that the Amazonia region has unparalleled biodiversity which means that one in five of all bird species known in the globe lives in the Amazon Jungle. The author is testing this claim against the known occurrence of the world owl species. There are fewer owl species in Amazonia than expected namely 34 (against 54 expected). Two possible reasons are that our knowledge of the Amazon region species is still incomplete as may be indicated that new owl species have been found recently. The other reason could be that the rainforest is not after all the most wanted biotope for many of the owl species which often depend on the prey available in the bottom tier of the forest which is flooded during the wet season. Whatever the reason is, more detailed research is needed on all species of the Amazon region as there must be many new owls and other animal species out there waiting to be discovered. We have no idea how many of those new species have been or will be lost due to the rainforest destruction before they can be discovered. Therefore, it is necessary to stop deforestation in the Amazonia, be it due to forest logging, uncontrolled fires (often deliberately set) agriculture expansion or industrial development. Deforestation is not the only reason that the Amazon basin is changing. The rainforest suffers also from the global climate change when the higher temperatures reduce the rainfall in the tropical Atlantic region, causing drought and increasing the fire susceptibility of the rainforest. Luckily the owls are not so sensitive to surrounding forest cover as many other tropical forest-dependent bird species, like the large-bodied avian frugivores. Impacts of forest fragmentation on owls will need additional research.
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Nyeki, Catherine. "Plastika [Totipotenta]." In Metaplasticity in Virtual Worlds, 228–39. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-077-8.ch014.
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Over the last ten years, my work has developed into a biotope abounding in diversity, a sort of virtual “vivarium” composed of interactive pieces, musical creations, drawings and writings in numerous sketchbooks, films and installations. A digital work of art is by definition non-uniqueness; it is potentially transformable at any moment. It is both fascinating and intriguing to have access to such a “plastic material”. My artistic research, which has flexible boundaries and echoes that of today’s nanosciences, genetics and cell biology, has gradually led me to improve certain personal concepts like the sensitive microscope, tactile laboratory, imaginary incubator, parallel botany, nano evolutions, visible and audible strata, multilingual semantic zoo, bud cell, virtual tissue, body graft… and the list goes on. My contribution’s title, Plastika [Totipotenta], is taken from my last solo exhibition in Paris that brought together recent works related to plasticity, questioning a sort of constantly evolving “modeling clay”-type thinking. This chapter is an invitation to question the various levels of plasticity concepts applied to some of my latest works that have been inspired by current biotechnology and my recent collaboration with a cell biologist.
Conference papers on the topic "Biotopic diversity"
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Simonov, P. S. "FEATURES OF THE DISTRIBUTION OF ORB-WEAVER SPIDERS (ARANEI: ARANEIDAE) on the SOUTH SIKHOTE-ALIN MOUNTAINS IN SUMMER." In Современные проблемы регионального развития. ИКАРП ДВО РАН, 2022. http://dx.doi.org/10.31433/978-5-904121-35-8-2022-38-40.
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An analysis of the altitudinal-zonal distribution of the orb-weaver spiders (Aranei: Araneidae) in the Livadiisky Range (Primorskii krai) using the method of high-altitude profiling in the summer is given. A total of 253 specimens of spiders are captured belonging to seventeen species in 9 genera. The highest diversity of species and the maximum number of orb weaving spiders, observed in the herb-wormwood biotopes and the cedar-broadleaf forests at elevations of 200–300 m above sea level.
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Rusu, Ștefan, Dumitru Erhan, Oleg Chihai, Maria Zamornea, Ion Gologan, Nina Chihai, Mihail Pruteanu, and Vadim Rusu. "Diversitatea helmintofaunei la câinii maidanezi în dependență de vârstă și biotop." In International symposium ”Functional ecology of animals” dedicated to the 70th anniversary from the birth of academician Ion Toderas. Institute of Zoology, Republic of Moldova, 2019. http://dx.doi.org/10.53937/9789975315975.58.
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More than 1200 biological samplings were collected from the free-ranging dogs of various ages and biotopes that allowed to study the diversity of their helminth fauna. The results of investigations revealed that 95% of researched dogs are infested with multiple parasites mostly endoparasites (Eimeria canis, Dipilidium caninum, Echinococcus granulosus, Toxocara canis, Toxascaris leonina, Ancylostoma caninum and Trichocephalus vulpis.). It was established that the level of contamination with the all above mentioned parasites in free-ranging dogs is hogher in the adult dogs compared to the young ones. The young dogs were predominantly infested with parasites from the class Sporozoite (Eimeria canis) and the Nematoda class (Toxocara leonina). The level of contamination with parasites of the free-rangeging dogs is higher in the rural regions compared to the urban area.
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Rusu, Stefan, Dumitru Erhan, Maria Zamornea, Elena Gherasim, and Viorelia Rusu. "Study of ectoparasitic fauna diversity in wild birds from various anthropic biotopes of the Republic of Moldova." In Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.45.
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The results of the complex parasitological studies conducted in the wild birds of hunting interest as well as domestic birds demonstrates that the phenomenon of the poliparasitism is a static one, although the poliparasitic quantitative and qualitative structure is continuously changing. This is due to instantaneous contact of the wild birds with the domestic ones, irregular deparasiting of domestic animals and their crates, reduced areas for animals breading and maintenance that ensures the permanent contact with the wild birds as the infestation source. The findings of the study on the diversity of the ectoparasitic fauna in wild birds from various anthropic biotopes of Moldova revealed that the wild and domestic birds are infested with multiple parasites and that the most identified parasitoses are common for major birds of hunting interest as well as for the domestic birds.
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Upite, Ilze, Aija Pilvere, Irina Pilvere, and Aleksejs Nipers. "RESULT-ORIENTED EFFICIENT AND SUSTAINABLE RESOURCE MANAGMENT IN FORESTRY IN LATVIA." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/3.1/s14.46.
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The forest industry is an important sector of the economy of many countries, because the timber grown in it can be used for achieving various economic goals, including increasing added value and exports. However, the social functions of forestry: rural employment and the availability of forests, in the form of various ecosystem services, are also important to the public. Forests are home to various protected species, and forest biotopes, biotopes associated with forests as well as the biodiversity of forests play an important role in preserving and improving the productivity, regeneration capacity and viability of the forests. Therefore, the Latvian Bioeconomy Strategy 2030 identifies forestry as one of the fields that needs development to achieve the goals of that strategy. Thus, the aim of the research is to study the Forestry section of the Latvian Bioeconomy Strategy 2030 strategic goal 5.2. �Result-orientated, efficient and sustainable resource management�. The research shows that as of the end of 2021, the Forestry objectives set in the Latvian Bioeconomy Strategy 2030 had only been accomplished partially. There is good progress in the replacement of non-productive areas of forest stand with productive stand; the use of planting material that is genetically improved and suitable for climate change in forest regeneration and afforestation; the thinning of young forest stand; the reconstruction and construction of forest amelioration systems; the range and intensity of the ecosystem services provided by commercial forests, as well as the achievement of the objectives for the preservation and renewal of biological diversity.
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Rusu, Stefan. "Diversitatea parazitofaunei animalelor sălbatice și celor domestice din diverse biotopuri naturale și antropizate ale Republicii Moldova." In International Symposium "Actual problems of zoology and parasitology: achievements and prospects". Institute of Zoology, 2017. http://dx.doi.org/10.53937/9789975665902.07.
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The study of the diversity of the parasitophauna in wild and domestic animals from various natural and anthropic biotopes of the Republic of Moldova allowed revealing that 80,8% of such animals were infested with mix forms of parasites, in diverse associations from two till five parasite agents. The obtained results suggest that the parasitophauna of the wild animals (deers, roedeers, bisons) roughly correspond to the parasitophauna of the domestic animals (cattle, sheep) pasturing in the neighboring regions. The analysis of the parasitological data show that the parasitic agents could be attributed into two groups: those obligate for wild animals and those common for the wild and wild animals. The high level of infestation of the wild ruminants with fasciolas, dicrocelium, intestinal and pulmonary strongyles, protista as well as the presence of the intermediary and complementary hosts demonstrate again that these take part in maintaining the epizootic chain of diseases and have a huge impact on infesting the domestic animals. In this way, the ambient environment plays an important role in maintaining the epizootic chain of the parasitic infections. The recent parasitic research conducted in domestic and wild animals in Moldova reveal the conversed situation – the wild and domestic animals are reciprocally infested by various parasitic agents while pasturing on the same territory.