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1

Casas-Beltrán, Diego Armando, Courtney Maloof Gallaher, Emely Hernandez Yac, et al. "Seaweed Invasion! Temporal Changes in Beach Conditions Lead to Increasing Cenote Usage and Contamination in the Riviera Maya." Sustainability 12, no. 6 (2020): 2474. http://dx.doi.org/10.3390/su12062474.

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Since 2011, tourism to Mexico’s Yucatán Peninsula has been heavily impacted by large masses of sargassum seaweed washing up on the beaches, with the largest seaweed event occurring in 2019. Seaweed deters beach tourism, potentially shifting tourism inland towards other activities such as swimming in cenotes (sinkholes). Our mixed methods study combined data from surveys of visitors to the region, interviews with tourists and tour operators, thematic analysis of newspaper articles, laws and policies and analysis of water samples from a cenote to understand the environmental impact on cenotes of this shifting tourism industry. We identified intentional efforts by the tourism industry to encourage cenote tourism in response to the seaweed problem, and our survey and interview data confirmed that tourists are choosing to visit cenotes in lieu of beaches. Water samples from one tourist cenote in 2019 indicated increased pollution relative to previous years. Current regulations and management of tourist cenotes are weak, creating the potential for significant long term harm to the environment and to the water sovereignty of surrounding communities. Regulation of cenotes should be strengthened to protect these fragile karst ecosystems and to give local and indigenous residents a formal voice in the management process.
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2

Silva, Ildisnei Medeiros da. "Educação dialógica e ensino de teatro: aproximações pedagógicas." Revista Polyphonía 27, no. 2 (2016): 203. http://dx.doi.org/10.5216/rp.v27i2.44725.

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O presente trabalho possui como objetivo problematizar os caminhos para o planejamento de um ensino dialógico de teatro, considerando o pensamento freireano com relação ao diálogo, e a necessidade de uma educação para a emancipação dos sujeitos. A investigação se desenvolve contando com a “dialogicidade” e a “abordagem problematizadora” como fundamentos metodológicos mobilizadores para a construção de conhecimentos. Desse modo, os referenciais teóricos desta escrita situam-se nos trabalhos de Paulo Freire no que se refere principalmente à educação dialógica, e nas produções do Laboratório de Estudos
 Cenográficos e Tecnologias da Cena (Cenotec/UFRN), no que diz respeito à construção de um processo educativo que considera as realidades dos sujeitos, estabelecendo relações entre essas realidades e os conhecimentos específicos da área ensinada.
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3

Szeroczyńska, Krystyna, and Edyta Zawisza. "Cenotes – Lakes of the Yucatan Peninsula (Mexico)." Studia Quaternaria 32, no. 1 (2015): 53–57. http://dx.doi.org/10.1515/squa-2015-0005.

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Abstract Cenote lakes are natural sinkholes or depressions resulting from the collapse of limestone bedrock exposing the groundwater underneath. Thousands of such lakes are particularly encountered on the Yucatan Peninsula (Mexico). These lakes were of great significance for the Maya culture as important religious places and primary source of drink­ing water. They permitted the survival of Mayan communities through dry periods known as “Maya drought”. Most of the cenote lakes are large open water pools measuring tens of meters in diameter. The majority of cenotes are smaller sheliered sites. Their waiers are usually very clear and oligotrophic, originating from rain waier filtering slowly through the ground. The auihors visited and coliected zooplankion samples from eight cenotes in November 2013, namely: Ik-Kil, Samula, Zaci, X-Kekn, Actum Ha, Cristal, Sian Ka’an, and Chan Chemuxil (transect Merida-Tulum- Cancun). The analysed lakes differ considerably in morphological terms, varying from very deep to shallow. Some of them are under human impact (tourists). The water samples were anaiysed for zooplankton content, but the phyto­plankton frequently occurring was also taken into account. The obtained results are largely varied, indicated big eco­logical verity among cenotes which depended on lake age, localization and morphometry. As showed our study Cladocera zooplankion was very rare and only present at several sites. Beiween the fauna community Copepoda and Ostracoda species were the most abundant. Phytoplankton were present in all studied lakes and it sees that played the central role in those ecosystems.
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4

Angyal, Dorottya, Efraín M. Chávez-Solís, Luis A. Liévano-Beltrán, Benjamín Magaña, Nuno Simões, and Maite Mascaró. "New distribution records of subterranean crustaceans from cenotes in Yucatan (Mexico)." ZooKeys 911 (February 12, 2020): 21–49. http://dx.doi.org/10.3897/zookeys.911.47694.

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New records of 14 stygobiont crustacean species pertaining to six Malacostraca orders from 32 cenotes are presented, with their associated caves of the state of Yucatan, Mexico, together with an individual account for each species. Species composition of most of the investigated cenotes is examined for the first time. A thermosbaenacean and two amphipod species were not formally recorded to the cenote ecosystems of the state of Yucatan prior to our research. Distribution data of a cirolanid isopod previously known only from its type locality is also provided. Barcodes of mitochondrial cytochrome c oxidase subunit I for the reported peracarid species previously lacking this information have been included in present study as tools for species identification and a baseline of further molecular genetic analyses.
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Araújo, José Sávio Oliveira de. "DIÁLOGOS ENTRE A ACADEMIA E A CENOGRAFIA: A CONTRIBUIÇÃO DO CENOTEC UFRN PARA ESTE DEBATE NA PQ TALKS DA QUADRIENAL DE PRAGA 2019." Cena, no. 30 (March 31, 2020): 50–60. http://dx.doi.org/10.22456/2236-3254.97120.

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O presente ensaio apresenta uma reflexão acerca da participação brasileira em um importante painel da Quadrienal de Praga 2019, o PQ Talks intitulado: “What has the academy done to or for scenography?” (O que a academia tem feito para ou pela Cenografia?), durante a Quadrienal de Praga 2019, em Praga, República Tcheca. Participaram deste painel pesquisadores da área de Cenografia de sete países, de diferentes continentes, permitindo observar uma significativa amostragem de questões que pautam a contribuição do espaço acadêmico na atividade cenográfica mundial em diferentes âmbitos e recortes. O foco aqui abordado se concentra no impacto gerado pela contribuição brasileira, neste painel, que apresentou um trabalho produzido por meio do PIBID TEATRO UFRN e desenvolvido do CENOTEC – Laboratório de Estudos Cenográficos e Tecnologias da Cena – DEART/UFRN em parceria com escolas públicas da rede municipal de ensino do município de Natal, RN, Brasil. Uma experiência inédita de introdução do Ensino de Cenografia no Ensino Fundamental, em escolas públicas, que expressou e exemplificou algumas inquietações apontadas pelos painelistas, resultando numa importante contribuição brasileira, tanto pelo seu ineditismo como pela demonstração de sua natureza interdisciplinar e articulações entre formação de professores de teatro, pesquisa universitária e inserção social da produção acadêmica. Palavras chave Quadrienal de Praga 2019. Diálogos acadêmicos. Ensino de Cenografia.
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6

Bolívar-Cimé, Beatriz, Javier Laborde, M. Cristina MacSwiney G., and Vinicio J. Sosa. "Effects of landscape matrix type, patch quality and seasonality on the diet of frugivorous bats in tropical semi-deciduous forest." Wildlife Research 41, no. 5 (2014): 454. http://dx.doi.org/10.1071/wr13185.

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Context Dry forests usually have a marked seasonality in resource availability; as a consequence, wildlife is subjected to drastic changes in food availability during the year. The presence of high-quality sites that provide food during lean periods is crucial in these habitats, especially in human-modified landscapes where resources are limited and scattered. Aims We assessed whether seasonal fluctuations in the availability of fruit resources in two contrasting landscape matrices (continuous tropical semi-deciduous forest and pasture) affect the diet diversity for frugivorous bats, and whether the presence of cenotes (freshwater-filled sinkholes) in these matrices had any effect during the rainy and dry seasons. Methods For each matrix type, two sites with a cenote and two sites with no cenote were sampled. The highest richness of chiropterochorous plants and the longer availability of fruit in the forest surrounding cenotes than in forest with no cenote helped evaluate the importance of patch quality on diet diversity. Two dry and two wet seasons were sampled to assess the effect of the season on diet diversity. Key results After four seasons, 1398 frugivorous bats belonging to seven species had been captured, with Artibeus jamaicensis being the most abundant and important seed disperser. Thirteen plant species made up the diet of the frugivorous bats, with Ficus and Solanum being the most frequent genera. Diet diversity was greater in the pasture matrix than in the continuous forest. During the dry season, diet diversity was higher at sites with a cenote in both landscape matrices, but this interaction was not statistically significant. Conclusions Frugivorous bats are flexible and capable of tracking variations in food availability at different temporal and spatial scales. The latter allows these bats to use several vegetation types during the year to complement their diet in highly seasonal forests. Implications Owing to their foraging habits and the high number and variety of seeds that bats can disperse, they create strong connections between both fragmented and continuous landscapes. Management practices that conserve the areas with arboreal vegetation are essential to the movement of bats and the seeds they disperse across fragmented landscapes that later contribute to forest regeneration.
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Fiers, Frank, Janet W. Reid, Thomas M. Iliffe, and Eduardo Suárez-Morales. "New hypogean cyclopoid copepods (Crustacea) from the Yucatán Peninsula, Mexico." Bijdragen tot de Dierkunde 66, no. 2 (1996): 65–102. http://dx.doi.org/10.1163/26660644-06602001.

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Four previously unknown hypogean species of cyclopoid copepods were collected in cenotes and wells of the Yucatán Peninsula, Mexico. Diacyclops chakan sp. n. and D. puuc sp. n. differ from their congeners in combining 3-segmented swimming legs, 11-segmented antennules, and legs 1–4 endopodite segment 2 all with 2 setae. Species of Diacyclops rarely occur in tropical regions, and the Diacyclops described here are only the second and third species recorded from Mexico. The benthic D. puuc was found in the large underground reservoir of a cenote. Diacyclops chakan was encountered in such large open subterranean water basins, but more frequently and abundantly in wells.
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8

Ritter, Simon Michael, Margot Isenbeck-Schröter, Christian Scholz, et al. "Subaqueous speleothems (Hells Bells) formed by the interplay of pelagic redoxcline biogeochemistry and specific hydraulic conditions in the El Zapote sinkhole, Yucatán Peninsula, Mexico." Biogeosciences 16, no. 11 (2019): 2285–305. http://dx.doi.org/10.5194/bg-16-2285-2019.

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Abstract. Unique bell-shaped underwater speleothems were recently reported from the deep (∼ 55 m) meromictic El Zapote sinkhole (cenote) on the Yucatán Peninsula, Mexico. The local diving community has termed these speleothems as Hells Bells because of their shape and appearance in a dark environment in ∼ 28–38 m water depth above a sulfidic halocline. It was also suggested that Hells Bells form under water, yet the mystery of their formation remained unresolved. Therefore, we conducted detailed hydrogeochemical and geochemical analyses of the water column and Hells Bells speleothems including stable carbon isotopes. Based on the comprehensive results presented in this study we deduce that both biogeochemical processes in the pelagic redoxcline and a dynamic halocline elevation of El Zapote cenote are essential for Hells Bells formation. Hells Bells most likely form in the redoxcline, a narrow 1–2 m thick water layer immediately above the halocline where a pelagic chemolithoautotrophic microbial community thrives from the upward diffusion of reduced carbon, nitrogen and sulfur species released from organic matter degradation in organic-rich debris. We hypothesize that chemolithoautotrophy, in particular proton-consuming nitrate-driven anaerobic sulfide oxidation, favors calcite precipitation in the redoxcline and hence Hells Bells formation. A dynamic elevation of the halocline as a hydraulic response to droughts, annual tidal variability and recharge events is further discussed, which might explain the shape of Hells Bells as well as their occurrence over a range of 10 m water depth. Finally, we infer that highly stagnant conditions, i.e., a thick halocline, a low-light environment and sufficient input of organic material into a deep meromictic cenote are apparent prerequisites for Hells Bells formation. This might explain their exclusivity to only a few cenotes in a restricted area of the northeastern Yucatán Peninsula.
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9

Mejía-ortíz, Luis M., Germán Yañez, and Marilú López-Mejía. "Anchialocarididae, a new family of anchialine decapods and a new species of the genus Agostocaris from Cozumel Island, Mexico." Crustaceana 90, no. 4 (2017): 381–98. http://dx.doi.org/10.1163/15685403-00003657.

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Two new species of anchialine cave shrimp from Cozumel Island are described. A new species from the family Agostocarididae,Agostocaris zabaletain. sp., occurs in three cenotes on the island (Chempita, Chankanaab System and Tres Potrillos). This new species is closely related toAgostocarisbozanicithat is known from one isolated cenote in another zone of the island.Agostocaris zabaletain. sp. is similar toA. bozanicibecause it lacks a rostrum with teeth, and the palp of the first maxilliped is not segmented. In additionA. zabaletaialso differs fromA. bozaniciby bearing four pairs of spines on the telson and only one spine on the outer ramus of the uropods. BothAgostocaris williamsiandAgostocaris acklinsensisdiffer fromA. zabaletaibecause both species have occasionally a serrate rostrum, and these species are reported exclusively from the Bahamas. A new family, Anchialocarididae, new genus and speciesAnchialocaris paulinin. sp. are described. This new species is known exclusively from the cenote Chempita located in the central area of the island. The new family Anchialocarididae is closely related to the families Agostocarididae and Atyidae because they have a similar branchial formulae. The main difference is that the new family has a simple articulation between carpus and palm of the first pereiopod, and this appendage is more slender than the second. Although the new family has several setae on the rudimentary propodus on the second pereiopod it lacks the abundance of setae found in other members of the Atyidae family genusTyphlatya. The relationship between this new family and the Agostocarididae is discussed.
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10

Liévano-Beltrán, Luis Arturo, and Nuno Simões. "Updated Distribution of the Mysid Antromysis cenotensis (Crustacea: Peracarida), a Protected Key Species in Yucatan Peninsula Cenotes." Diversity 13, no. 4 (2021): 154. http://dx.doi.org/10.3390/d13040154.

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We present 52 new geographic location records for the peracarid crustacean Antromysis cenotensis Creaser, 1936, endemic in cenotes of the Yucatan Peninsula, Mexico. This species is currently considered threatened and, therefore, is protected by Mexican law. These results arise from several expeditions carried out between 2017 and 2020 in 75 locations within the cenote-ring, the interior, and coastal plains of the peninsula. A comprehensive literature review provided 84 geographic location records since the species was described in 1936. A map with 136 geographic location records that better describe the current species distribution is also included. With this information, plus some notes on the ecology of the species, a comprehensive literature and data review, and a brief analysis regarding the possible factors associated with the confirmed absence of the species in some locations in the state of Yucatan, we provide a brief and condensed summary of the actual knowledge on this particular species. The data in Darwin Core format can be retrieved in Zenodo.
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Enseñat-Soberanis, Fernando, Rocío Blanco-Gregory, and Johnathan Alexander Mondragón-Mejía. "Percepción de congestión y dimensión social de la capacidad de carga en cenotes de Yucatán." Cuadernos de Turismo, no. 45 (June 3, 2020): 93–112. http://dx.doi.org/10.6018/turismo.426051.

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La visita masiva de turistas a los cenotes de Yucatán tiene impactos negativos sobre dos elementos: el recurso natural y la experiencia misma del visitante. Este estudio mide y compara, a través del indicador percepción de congestión, los impactos de la masificación en la experiencia del visitante en dos cenotes de Yucatán y entre tres tipos de visitantes: locales, nacionales y extranjeros. Los resultados muestran que la aceptabilidad de los visitantes a la congestión disminuye conforme aumenta el número de personas en ambos cenotes. Los visitantes extranjeros en los dos cenotes toleran menos la congestión mientras que los locales son el grupo que presentan niveles de tolerancia más altos. The massive visit of tourists to the cenotes of Yucatán has negative impacts on two elements: the natural resource and the visitor's own experience. This study measures and compares, through the congestion perception indicator, the impacts of massification on the visitor's experience in two cenotes of Yucatán and among three types of visitors: local, national and foreign. The results show that the acceptability of visitors to congestion decreases as the number of people in both cenotes increases. Foreign visitors in the two cenotes tolerate less congestion while locals are the group with the highest tolerance levels.
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Grego, Jozef, Dorottya Angyal, and Luis Arturo Liévano Beltrán. "First record of subterranean freshwater gastropods (Mollusca, Gastropoda, Cochliopidae) from the cenotes of Yucatán state." Subterranean Biology 29 (February 18, 2019): 79–88. http://dx.doi.org/10.3897/subtbiol.29.32779.

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The biospeleological investigations of several cenotes in the eastern region of Yucatán state, Mexico, during January 2018 yielded, among other invertebrates, two new truncatelloid gastropod species described herein as Mexicenoticaxochiigen. n. et sp. n. and Pyrgophorusthompsonisp. n. Both species represent the first record of stygobiont gastropod species from the cenotes of Yucatán indicating the high biodiversity potential of the studied area.
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13

Somohano Eres, Ana. "Roberto Romero Sandoval (ed.), Cuevas y cenotes mayas: una mirada multidisciplinaria. México: Universidad Nacional Autónoma de México, Instituto de Investigaciones Filológicas, Centro de Estudios Mayas, 2016, 195 pp." Estudios de Cultura Maya 49 (December 5, 2016): 285. http://dx.doi.org/10.19130/iifl.ecm.2017.49.820.

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En 2016 se publica el libro Cuevas y cenotes mayas; una mirada multidisciplinaria en el Centro de Estudios Mayas de la Universidad Autónoma de México, producto de la mesa "Los umbrales del inframundo maya: cuevas y cenotes", celebrada en el contexto del IX Congreso Internacional de Mayistas. La presente reseña revisa los aportes de los seis escritos que integran este volumen.
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Steinich, Birgit, Guadalupe Velázquez Olimán, Luis E. Marin, and Eugene Perry. "Determination of the ground water divide in the karst aquifer of Yucatan, Mexico, combining geochemical and hydrogeological data." Geofísica Internacional 35, no. 2 (1996): 153–59. http://dx.doi.org/10.22201/igeof.00167169p.1996.35.2.857.

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El acuífero de la península de Yucatán es un acuífero cárstico, el cual se caracteriza por su alta permeabilidad. Huellas del proceso de la carstificación, como los túneles y las cavernas (cenotes), se pueden apreciar en toda la península. Sin embargo, hay una acumulación de los mismos a lo largo de una línea circular, el Anillo de Cenotes. El anillo está relacionado con el cráter de Chicxulub, una estructura de impacto enterrada que data del límite del Cretácico/Terciario. El Anillo de Cenotes representa en varios de sus segmentos una zona de alta permeabilidad y se ha propuesto que actúa como un río subterráneo, el cual concentra el agua subterránea y la conduce hacia sus puntos de intersección con la línea costera cerca de Celestún y Dzilam de Bravo. Basado en datos hidrogeológicos, se describe una zona que separa hidráulicamente dos segmentos del anillo. Se usó la relación SO4/Cl como trazador natural para determinar direcciones de flujo en el área en estudio. La combinación de los resultados permite la identificación del parteaguas del sistema del río subterráneo y su ubicación en la parte sur del área en estudio cruzando el Anillo de Cenotes cerca de la población de Abalá.
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Borbolla-Vazquez, Jessica, Paul Ugalde-Silva, José León-Borges, and Job Alí Díaz-Hernández. "Total and faecal coliforms presence in cenotes of Cancun; Quintana Roo, Mexico." BioRisk 15 (December 2, 2020): 31–43. http://dx.doi.org/10.3897/biorisk.15.58455.

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The large increase in population in Cancun, Mexico has increased domestic, agricultural and industrial activities, resulting in inadequate solid and liquid waste management that can affect underground aquifers. One of the factors which affects water quality is coliform bacteria. The present study focused on determining the presence of total and faecal coliforms in ten urban cenotes in Cancun. Sampling was carried out in the dry and rainy seasons of 2018. The Most Probable Number (MPN) technique was used to determine the concentration of coliform bacteria. The results from the analyses indicate that the ten cenotes are contaminated with total and faecal coliforms. Additionally, the concentration of coliforms increases during the rainy season. We conclude that all the cenotes are contaminated with faecal coliforms and suggest that more studies are necessary to determine the origin of this contamination and the impact on the ecosystem.
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Ivanova, Maria B., and Alexandra P. Tsurpalo. "The Phyllospadix iwatensis community in the intertidal zone of the Far Eastern seas of Russia." Izvestiya TINRO 188, no. 1 (2017): 173–80. http://dx.doi.org/10.26428/1606-9919-2017-188-173-180.

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The community of Phyllospadix iwatensis is studied using materials from expeditions of A.V. Zhirmunsky Institute of Marine Biology (National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences) and archive data (1949-2013) of the Laboratory of Chorology covering the species habitat area from Peter the Great Bay in the south to middle Kuril Islands in the north. The core of the community is identified. It has changing species composition; the changes correspond to geographical boundaries of the cenotic systems of Peter the Great Bay, the Lesser Kuril Islands, and Iturup Island. However, these boundaries do not coincide with the boundaries of the species-edificator habitat that embraces several cenotic systems. Spatial alterations of the cenotic systems are caused by landscape changes conditioned by general geomorphological situation and ecological conditions in the intertidal zone.
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Kipriyanova, L. M. "Vegetation of the Berd river and its tributaries (Novosibirsk region, West Siberia)." Vegetation of Russia, no. 12 (2008): 21–38. http://dx.doi.org/10.31111/vegrus/2008.12.21.

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A cenotic diversity of the Berd River and its tribu­taries is ascertained as 23 associations, 2 subassocia­tions, 2 variants and 4 communities referred to 3 ve­getation classes of the Braun-Blanquet approach: Phragmito-Magnocaricetea (15 associations, 2 sub­asso­ciations, 2 variants), Potametea (7 associations and 4 communities), Isoёto-Nanojuncetea (1 association). Cenotic structure and spatial allocation of stream vegetation of various parts of the Berd River are determined mainly by a ratio of the erosion-accumu­lation processes in the river bed and trophic status of waters, with the impact of altitudinal zonation beeing less significant. The cenotic diversity increases in the range «uppermeanlower flow». Two new asso­ciations of class Potametea Klika in Klika et Novak 1941, order Potametalia W. Koch 1926 are described: Scirpo lacustris—Nupharetum luteae within the allian­ce Nymphaeion albae Oberd. 1957, and Fonti­nali antipyreticae—Scirpetum lacustris within the Batrachion fluitantis Neuhäusl 1959. Some specifi­cations to the interpretation of the order Oenanthetalia aquaticae Hejný in Kopecký et Hejný 1965 are given.
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López, Luis Alberto Martos. "Underwater Archaeological Exploration of the Mayan Cenotes." Museum International 60, no. 4 (2008): 100–110. http://dx.doi.org/10.1111/j.1468-0033.2008.00670.x.

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Dykyy, I., Y. Tsaryk, I. Shydlovskyy, V. Trokhymets, and O. Holovachov. "Cenotic connection land biota Islands Western Antarctic." Ukrainian Antarctic Journal, no. 10-11 (2012): 239–56. http://dx.doi.org/10.33275/1727-7485.10-11.2012.304.

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20

Lopéz-Adrian, Silvia, and Jorge A. Herrera-Silveira. "Plankton composition in a cenote, Yucatan, Mexico." SIL Proceedings, 1922-2010 25, no. 3 (1994): 1402–5. http://dx.doi.org/10.1080/03680770.1992.11900402.

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Ritter, Simon, and Christian Scholz. "Erforschen eines Cenotes in Mexiko mit einer Multisonde." WASSERWIRTSCHAFT 108, no. 11 (2018): 83–84. http://dx.doi.org/10.1007/s35147-018-0233-6.

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Хуснетдинова (Khusnetdinova), Ландыш (Landysh) Завдетовна (Zavdetovna), Антон (Anton) Николаевич (Nikolaevich) Акулов (Akulov), and Светлана (Svetlana) Алексеевна (Alekseevna) Дубровная (Dubrovnaya). "THE RESEARCH OF THE SPECTRUM OF BIOLOGICALLY ACTIVE FLAVONOIDS GRASS HYPERICUM PERFORA-TUM L. FLORA OF THE REPUBLIC OF TATARSTAN BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY." chemistry of plant raw material, no. 4 (May 3, 2017): 175–79. http://dx.doi.org/10.14258/jcprm.2017041841.

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The article presents the results of the study of the dependence of the flavonoid content of the herb Hypericum perforatum L., from growth conditions of cenopopulations in various ecological, cenotic conditions of the Republic of Tatarstan. Plant biocenosis were considered – meadows, Border of broadleaf and pine forest or artificial planting of pine. A qualitative and quantitative analysis of flavonoids in the herb of Hypericum perforatum was carried out by high-performance liquid chromatography. In studying water-alcohol extracts of H. perforatum L. flavonoids – rutin, quercetin, bisapigenin were identified by HPLC analysis. It is shown that the ecological, cenotic conditions of growth of Hypericum perforatum affect the quantitative content of phenolic compounds. It has been established that in investigated cenopopulations in the territory of the Republic of Tatarstan, rutin is the dominant flavonoid in medicinal plant raw materials. Maximum amount of this compound detected in the samples of Hypericum perforatum confined to the pine biocenosis of Tukaevsky and Drozhzhanovsky districts under significant quantity level of quercetin. In all variants of the experiment, bisapiginin was detected in small amounts. Plants of Hypericum perforatum, grow in different plant biocenosis differed in the various contents of the compounds of the phenolic complex, which is probably due to the ecological, cenotic and climatic conditions of growth.
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Cedillo Fernández, Sergio Miguel. "El fabuloso saqueo del cenote sagrado de Chichén Itzá." Fuentes Humanísticas 30, no. 57 (2018): 142–46. http://dx.doi.org/10.24275/uam/azc/dcsh/fh/2018v30n57/cedillo.

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Marín, L. E., and E. C. Perry. "The hydrogeology and contamination potential of northwestern Yucatán, Mexico." Geofísica Internacional 33, no. 4 (1994): 619–23. http://dx.doi.org/10.22201/igeof.00167169p.1994.33.4.594.

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La única fuente de agua potable para el noroeste de la Península de Yucatán es un lente delgado de agua dulce que flota sobre una intrusión salina que ha sido detectada a más de 40 Km de la costa. El marco hidrogeológico de este acuífero es un sistema cárstico maduro con conductos, cavernas y cenotes. El gradiente hidráulico es muy pequeño, del orden de 7-10-mm/Km, sugiriendo permeabilidades muy altas. Estas permeabilidades han resultado en un acuífero muy vulnerable que tradicionalmente recibe tanto descargas domésticas como industriales. El noroeste de la Península está aparentemente aislado hidrogeológicamente del resto de la península por una zona de extremadamente alta permeabilidad (semicírculo de cenotes), el cual probablemente está relacionado con el Cráter de Chicxulub.
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Khussainova, Irina. "Age-related changes in lawn phytocenoses of various species." BIO Web of Conferences 24 (2020): 00036. http://dx.doi.org/10.1051/bioconf/20202400036.

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This article presents comparative data on the study of several composite multicomponent and monocomponent lawn cenoses based on the analysis of their density and decorative score. To ensure the best stability, projective coating and decorativeness, it is important when choosing components and composing herbal mixtures to take into account their interspecific dynamics of development, pace of development and longevity. Optimum cenoses are obtained by combining species from the rhizome-bush group, slowly growing, yet more long-lived, such as Festuca rubra L., Poa pratensis L. The decorativeness of such cenoses is about 7.5 points, density about 20000 pcs / m2. With age, in complex cenoses, the density of shoots increases, in monotypic ones it decreases.
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Salomon, Jean-Noël. "Cenotes et trous bleus, sites remarquables menacés par l’écotourisme." Cahiers d'Outre-Mer 56, no. 223 (2003): 327–52. http://dx.doi.org/10.4000/com.815.

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Díaz-Arce, Verónica, Jorge A. Herrera-Silveira, and Francisco A. Comín. "Limnological characteristics of two types of cenotes of Yucatán." SIL Proceedings, 1922-2010 27, no. 6 (2001): 3579–82. http://dx.doi.org/10.1080/03680770.1998.11902494.

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Webb, John A., Ken G. Grimes, and Ian D. Lewis. "Volcanogenic origin of cenotes near Mt Gambier, southeastern Australia." Geomorphology 119, no. 1-2 (2010): 23–35. http://dx.doi.org/10.1016/j.geomorph.2010.02.015.

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Hasanova, T., G. Mammadova, and G. Asgarova. "Phytomass of Gray-Brown Soils Forming in Arid Ecosystem of Azerbaijan." Bulletin of Science and Practice 7, no. 9 (2021): 110–15. http://dx.doi.org/10.33619/2414-2948/70/11.

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Formed in the arid ecosystem of the Greater Caucasus, gray-brown soils were studied in comparison with the phytomass in natural and cultivated cenoses, along with the agrochemical properties of these soils. Comparative study of these indicators on the dominant lands of economically important regions is innovative. Soils of various herbaceous natural cenoses and cover of cultivated cenoses, as well as their agrochemical properties, are important for attracting virgin soils to agriculture. The results show that these lands are suitable for agriculture and high yields.
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Ovchinnikova, Svetlana. "Ecological features and new location of the rare relict species Craniospermum pseudotuvinicum (Boraginaceae)." BIO Web of Conferences 16 (2019): 00024. http://dx.doi.org/10.1051/bioconf/20191600024.

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Information on the new location of the high-mountainous species Craniospermum pseudotuvinicum (endemic to Mongolia) is given. The morphological and ecological-cenotic features of the species, as well as known locations within the Central Mongolian-Altai province are considered.
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Blanco Gregory, Rocío, Fernando Enseñat Soberanis, and Johnathan Alexander Mondragón Mejía. "La capacidad de carga psicosocial del turista: instrumento de medición para el desarrollo sostenible en la turistificación de los cenotes." Cuadernos de Turismo, no. 43 (May 6, 2019): 169–86. http://dx.doi.org/10.6018/turismo.43.07.

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La capacidad de carga psicosocial ha demostrado ser un instrumento efectivo para establecer números máximos de personas que un turista está dispuesto a ver simultáneamente en espacios naturales. Aunque, ha sido muy aplicado en parques nacionales de EEUU, este indicador no ha sido utilizado en espacios naturales confinados como son los cenotes de la península de Yucatán. Esta investigación aplica este indicador generando resultados que pueden utilizarse para una gestión sostenible de estos espacios. The psychosocial load capacity has proven to be an effective instrument to establish maximum numbers of people that a tourist is willing to see simultaneously in natural spaces. Although, it has been widely applied in national parks in the USA, this indicator has not been used in confined natural spaces such as the cenotes of the Yucatan Peninsula. This research applies this indicator generating results that can be used for sustainable management of these spaces.
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Dowd, Anne S., Anthony F. Aveni, and Ramón Carrasco. "SOLAR OBSERVATORY OR ALLEGORY? CALAKMUL'S GROUP E-TYPE COMPLEX FORM AND FUNCTION." Ancient Mesoamerica 28, no. 2 (2017): 559–83. http://dx.doi.org/10.1017/s0956536117000165.

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Members of the Proyecto Arqueológico de la Biosfera Calakmul under Carrasco's direction excavated the Cenote Style Group E-type complex at the Maya site of Calakmul, Campeche, Mexico. The Cenote Style refers to the plan of the E-Group with a series of three temples built onto a long narrow eastern range structure facing a western structure across a broad central plaza. Architectural data exist to evaluate this standardizing group's utility for observing solar events. Astronomical evidence for the function of this complex is presented and discussed. The overall orientation of Structures IVa, IVb, IVc, and VI is slightly east, 13° of true north, while a pair of doorways in Structure IVc align with the setting sun during the summer solstice point, despite the break in the buildings' floor-plan symmetry this represents.
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Waniowski, Paweł. "Strategie cenowe sklepów internetowych." Nierówności społeczne a wzrost gospodarczy 45, no. 1 (2016): 366–73. http://dx.doi.org/10.15584/nsawg.2016.1.37.

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Estrada Medina, Hector, Juan José Jiménez Osornio, Oscar Álvarez-Rivera, and Roberto Carlos Barrientos Medina. "El karst de Yucatán: su origen, morfología y biología." Acta Universitaria 29 (October 23, 2019): 1–18. http://dx.doi.org/10.15174/au.2019.2292.

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El karst del estado de Yucatán, México, tiene su origen en los arrecifes coralinos y sedimentos marinos que, al exponerse a la superficie, formaron la roca caliza. Los procesos de solubilización-precipitación de esta roca han promovido la ausencia de corrientes de agua superficiales, un relieve ligeramente ondulado con planicies, depresiones y montículos, afloramientos y presencia de cenotes. Los diferentes grados de porosidad y dureza de la roca han permitido la formación desde pequeñas oquedades y acumulaciones de suelo, hasta complejos sistemas de cuevas secas y húmedas. El manejo de este tipo de áreas debe partir del conocimiento de su origen, morfología y biología para garantizar el uso sustentable de los recursos naturales. Se requiere especial atención en el manejo de la extracción de roca caliza, las actividades turísticas y productivas relacionadas con el uso de agua del acuífero, así como el volumen y calidad de las descargas de aguas residuales al suelo, cenotes y el mar.
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Rubtsova, T. A. "Ecological-cenotic analysis of aboriginal flora in Jewish Autonomous Region." Regional Problems 22, no. 1 (2019): 5–11. http://dx.doi.org/10.31433/2618-9593-2019-22-1-5-11.

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MacSwiney G., M. Cristina, Beatríz Bolívar Cimé, Frank M. Clarke, and Paul A. Racey. "Insectivorous Bat Activity at Cenotes in the Yucatan Peninsula, Mexico." Acta Chiropterologica 11, no. 1 (2009): 139–47. http://dx.doi.org/10.3161/150811009x465758.

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Makhmudova, U. "Cenotic Characteristic of Peganum harmala L. on Various Plant Communities." Bulletin of Science and Practice 7, no. 5 (2021): 69–74. http://dx.doi.org/10.33619/2414-2948/66/07.

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The article presents the results of our coenopopulations studies of Peganum harmala L., conducted in various plant communities, ecologically most, less and least polluted areas. An old coenopopulation type has been identified in Peganum harmala L. in I CP in 2016 (∆−0.56–0.61), in II CP in 2018 (∆−0.56–0.56).
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Ovczinnikova, S. V. "Craniospermum volkovae (Boraginaceae), a new species from Mongolia." Novitates Systematicae Plantarum Vascularium, no. 50 (2019): 148–53. http://dx.doi.org/10.31111/novitates/2019.50.148.

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A new species Craniospermum volkovae Ovczinnikova (Boraginaceae) from relationship of C. pseudotuvinicum Ovczinnikova et A. Korolyuk, is described from the Central Mongolian-Altai province of Mongolia. Morphological and ecologo-cenotic peculiarities of the new species are discussed, and the necessity of its treatment within a separate section Pseudotuvinica Ovczinnikova is substantiated.
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39

Blagoveshenskaya, N. V., Ch T. Zamaldinova, and G. V. Funk. "History of Vegetation of Ulyanovsk City and Its Surroundings." Povolzhskiy Journal of Ecology, no. 1 (March 23, 2020): 3–14. http://dx.doi.org/10.35885/1684-7318-2020-1-3-14.

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The vegetation evolution on the modern territory of the Ulyanovsk City and its surroundings, beginning from the late glacial period, can be presented as follows. 11,000– 10,300 years ago: a “tundra-steppe” with wormwood-mazy, horsetail, fern, shrubbygreen-green communities. 10,300–9,500 years ago: wormwood-haze-cenotic cenoses, isolated islets of sparse pine forests. 9,500–8,500 years ago: sagebrush-cerebral, cereal steppes and pine forests. 8,500–8,000 years ago: turf-grass, grass-meadow-grass meadow steppes and pine forests. 8,000–6,000 years ago: forbred-cereal, less often turfgrass meadow steppes, birch, and birch-pine forests, the appearance of deciduous species. 6,000–4,500 years ago: pine-broad-leaved, broad-leaved forests, mixed-grassgrass meadow steppes, and the maximum afforestation. 4,500–3,200 years ago: broadleaved, pine-broadleaf forests, and the appearance of agrocenoses. 3200–2500 years ago: pine, pine-birch forests, reduction of broad-leaved species, the expansion of turfgrass steppes and agrocenoses. 2,500–700 years ago: the emergence of secondary forests and meadow steppes (fescue, wormwood-cereal), the expansion of agrocenoses. 700–350 years ago: pine, pine-birch, pine-broadleaf forests, reduction of agrocenoses. 350 years ago till the present time: a sharp decline in forests, the predomination of secondary pine, broad-leaved, small-leaved, mixed forests and secondary meadow steppes, the expansion of agrocenoses and residential areas. Thus, the vegetation of the territory of the Ulyanovsk City and its environs since the late glacial period varied from the steppe one (11,000–8,000 years ago) to the forest-steppe one (8,000–700 years ago) and again to the steppe one (700 years ago – modern time). The least afforestation of the territory was observed from 11,000 to 9,500 years ago (3–4%) and from 350 years ago to the present (6–7%). The greatest afforestation of the forest-steppe was from 6,000 to 3,200 years ago, when the forest-to-steppe ratio was equal.
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Bakshaev, D. Yu, T. A. Sadokhina, and V. Yu Listkov. "Creating competitive galega and bromus cenoses." Siberian Herald of Agricultural Science 50, no. 2 (2020): 15–22. http://dx.doi.org/10.26898/0370-8799-2020-2-2.

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Field experiments (2001–2005) were carried out to create optimal schemes for sowing mixtures of perennial grasses in the forest-steppe of Western Siberia. Objects of research were Krasnoobsky oats, Eastern galega Gorno-Altayskaya 87, awnless brome Antey. The soil of the plots was medium thick, medium loamy leached chernozem. The experiment was carried out in two layouts spread in time and in space. Grasses were sown under the cover of Krasnoobsky oats. Awnless brome was sown across galega in the first ten days of May. Seeding rate of awnless brome was 3.0; 4.5 and 6.0 million germinating seeds per hectare. Recordings of yield were made according to standard methods. The highest yield of galega dry mass was achieved when it was sown in rows with awnless brome planted with inter-row spacing of 15 cm (it was higher than with 30 cm inter-row spacing by 1.16 t/ ha and 0.63 t/ha, respectively). In the variant “three rows of galega + a row of awnless brome” (3 : 1), the yield of dry mass of the mixture in two cuttings was higher by 5.7 and 2.1% than when they were sown with every other row skipped. The total yield for two cuttings exceeded single-species crops of galega by 0.48–2.03, and awnless brome by 2.15–2.54 t/ha. A tendency towards a decrease in the yield of dry mass in single-species crops of galega with an increase in row spacing was noted. In mixtures sown at the same time according to the 3 : 1 scheme, the yield of dry mass was 5.14 t/ha in the first mowing and 4.05 t/ha in the second. This is higher than in the mixture sown according to the scheme “a row of galega + a row of awnless brome” (1 : 1) by 2.2–7.6, or 2.2–13.1%. Awnless brome in mixtures is more competitive than galega. An increase in the seeding rate of awnless brome from 3.0 to 6.0 million germinating seeds/ha in the herbage of galega increased the yield by 0.9–1.37 t/ha. The yield of dry mass of mixtures sown at the same time was higher than mixtures with awnless brome planted between rows of galega with spacing of 15 cm by 2%, and with row spacing of 30 cm by 10%.
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DE GRAVE, S., and T. S. SAKIHARA. "Further records of the anchialine shrimp, Periclimenes pholeter Holthuis, 1973 (Crustacea, Decapoda, Palaemonidae)." Zootaxa 2903, no. 1 (2011): 64. http://dx.doi.org/10.11646/zootaxa.2903.1.7.

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Caridean shrimps are one of the most conspicuous faunal components of the Indo-West Pacific anchialine fauna (Maciolek, 1983). To date, 11 anchialine species distributed in 10 genera and 5 families have been recorded in Indo-Pacific waters, with related species occurring in Atlantic waters, notably in Mexican cenotes and caves in the Bahamas.
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42

Akatov, V. V., T. V. Akatova, and S. G. Chefranov. "Impact of dominants on species and cenotic diversity of grass vegetation." Plant Biology and Horticulture: theory, innovation, no. 149 (December 10, 2019): 7–16. http://dx.doi.org/10.36305/0201-7997-2019-149-7-16.

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43

Шевчик, Василь Леонович, Ігор Володимирович Соломаха, and Володимир Андрійович Соломаха. "Eco- logycal and cenotic features «Ulianykivski dzherela (wellsprings)» designed landscape reserve." Agroecological journal, no. 3 (October 13, 2019): 27–34. http://dx.doi.org/10.33730/2077-4893.3.2019.183466.

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44

Dubyna, D. V., and E. L. Kordyum. "ONTOGENESIS PLASTICITY OF VASCULAR PLANTS: MOLECULAR, CELLULAR, POPULATION AND CENOTIC ASPECTS." Visnik Nacional'noi' akademii' nauk Ukrai'ni, no. 07 (July 20, 2015): 32–40. http://dx.doi.org/10.15407/visn2015.07.032.

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45

Правдюк, А. Ф., та Е. А. Скрипчинская. "Комплексный анализ растительности Верхнеегорлыкского ландшафтного района Ставропольской возвышенности". ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ 70, № 5 (2021): 15–20. http://dx.doi.org/10.18411/lj-02-2021-159.

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The article deals with issues related to the research of flora, the identification of the structure and biological features. This research is based on the methods of conducting a comprehensive floral analysis. On the example of the Verkhneegorlyk landscape district of the Tatar settlement, a comprehensive analysis of vegetation was carried out. It includes geographical, systematic, ecological-cenotic and biomorphological types of analysis.
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Montes-Ortiz, Lucia, Tom Goldschmidt, and Manuel Elías-Gutiérrez. "First evidence of parasitation of a Bosmina (Cladocera) by a water mite larva in a karst sinkhole, in Quintana Roo (Yucatán Peninsula, México)." Acarologia 59, no. 1 (2019): 111–14. http://dx.doi.org/10.24349/acarologia/20194315.

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For the first time a parasitic relationship between a water mite larva and a Cladocera is found and documented by scanning electron microscope (SEM) imaging. A Unionicolidae larva (cf. Unionicola) has been found attached to a Bosmina tubicen (Cladocera) collected in a karst sinkhole (cenote) in the southeast of the Yucatán Peninsula (México).
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47

Рожков, А. О. "ОЦІНКА РОЗВИТКУ ПОСІВІВ ПШЕНИЦІ ЯРОЇ ЗА ПРОВЕДЕНИМИ ФЕНОЛОГІЧНИМИ СПОСТЕРЕЖЕННЯМИ". Вісник Полтавської державної аграрної академії, № 3 (27 вересня 2012): 49–54. http://dx.doi.org/10.31210/visnyk2012.03.09.

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Висвітлено результати чотирирічних дослідженьщодо впливу ценотичних факторів: способів сівбита норм висіву на час проходження окремих фазрозвитку рослин пшениці ярої твердої. У дослідахдоведено вплив ценотичного фактора, що визнача-вся різними варіаціями досліджуваних факторів начас проходження рослинами міжфазних періодіврозвитку. Із послабленням ценотичної напруги упосівах за смугового способу сівби відзначено при-скорене проходження розвитку посівів від сівби дофази кущіння, а також у міжфазний період – відвиходу у трубку до цвітіння. Водночас у цих варіа-нтах відзначено розтягування періоду від повнихсходів до виходу в трубку і від цвітіння –до воскової стиглості.
 The results of four-year researches concerning influence of cenoticfactors such as (way of sowing and sowing rates) on the duration ofseparate development phases of hard spring wheat plants are given.The influence of a cenotic factor characterized by differentvariations of experimental factors during the interphase periods inplants’ development has been proved in the experiments. Under weakening cenotic stress in row plants sowing and less experimental sowing rates accelerated plants development phasesfrom sowing time to bushing and also during interphase stage fromtubing to flowering was observed. With this, the above mentionedvariants showed a longer plant development period from fullgermination to tubing and from flowering to wax ripeness.
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Ilyina, V. N. "Ontogenetic structure and types of cenopopulation of Hedysarum grandiflorum Pall. in the Middle Volga basin." Proceedings of the National Academy of Sciences of Belarus, Biological Series 64, no. 3 (2019): 302–10. http://dx.doi.org/10.29235/1029-8940-2019-64-3-302-310.

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. The need to study the current state of cenotic populations of rare plant species in nature is not in doubt for the conservation of floristic and phytocenotic diversity at the regional and world levels. The purpose of our study is to study the current state of the cenotic populations of Rare in the Middle Volga basin Hedysarum grandiflorum Pall. To characterize the ontogenetic structure of the cenopopulations, generally accepted demographic indicators were used: the recovery index (the ratio of growth to the generative fraction is calculated), the replacement index (the ratio of growth and the sum of generative and post-regenerative fractions), and the aging index (post-generative to the adult part of the cenotic populations). The population estimation was carried out by the criterion “delta-omega”.A relatively narrow range of ecological and phytocoenotic growth conditions is characteristic of the species, for the most part a patient type of life strategy. Among the limiting factors for the development of populations of environmental factors are their location at the border of the area, uncontrolled grazing in areas, excessive recreation of territories and steppe fires (natural origin and pala) in phytocenoses with the participation of a penny, career development of limestone and Cretaceous slopes, and construction debris, the appearance of dirt roads and the construction of various objects in the points of growth of the model species.The main ways of ontogenesis of the species are identified – normal, accelerated and delayed, breaks in the development of individuals, their rejuvenation and the manifestation of quasisenity were noted. The majority of H. grandiflorum develop at a normal and accelerated rate. The main indicator for determining the current state of populations and their loci is the ontogenetic structure. As an example, information on the ontogenetic composition of some cenopopulations of H. grandiflorum at the Chubovskaya Krasnaya Gorka (High Samara Zavolzhye, Russia) is given. Populations are characterized by the predominance of generative individuals. Of the registered cenopopulations, 11 is characterized as mature, 9 – transitional, 2 – ripening, 1 – young. Aggregation is characteristic of the spatial structure of H. grandiflorum.
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Paredes, Carlos, Hector Matos, Rogelio De la Vega, and Eulogio Pardo. "Reconocimiento semiautomático de depresiones kársticas mediante análisis de agregados en sus distribuciones morfométricas. Aplicación al karst del Estado de Yucatán, México." Revista Mexicana de Ciencias Geológicas 36, no. 2 (2019): 270–88. http://dx.doi.org/10.22201/cgeo.20072902e.2019.2.1017.

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La Península del Yucatán, una de las cinco regiones en las que fisiográficamente se divide la República de México, se encuentra principalmente constituida por rocas carbonatadas de origen sedimentario, por lo que, debido a sus condiciones geológico estructurales, climáticas e hidrogeológicas, acoge importantes procesos de disolución, lo que da lugar a un paisaje en el que predominan las formaciones endo- y exo-kársticas. Entre estas segundas, las depresiones en forma de cenotes, dolinas, uvalas y poljes, han sido objeto de numerosos estudios, al tratarse de zonas de importancia tanto hidrogeológica como histórico sociocultural, muy sensibles a la alteración medioambiental. Actualmente hay unas 3000 depresiones catalogadas el Estado de Yucatán (EY), sin embargo, la cobertura vegetal dificulta su localización y clasificación, mermando la completitud del inventario. En este trabajo se presenta el procedimiento utilizado para construir y ampliar el catálogo de depresiones en el EY, agrupado por tipologías, mediante un sistema de clasificación semiautomática de tipo k-medias, utilizando los parámetros morfométricos más relevantes de las depresiones, identificados mediante una agrupación jerárquica. Los inventarios utilizados de cenotes (SEDUMA), cuerpos de agua (INEGI), y curvas de nivel hipsométricas a 1:50 000 (INEGI) han sido complementados con las depresiones obtenidas, sobre el modelo digital de elevaciones con 15 m de resolución (CEM 3.0, INEGI), mediante dos algoritmos (llenado y jerárquico) en ArcGis. Para cada inventario se han calculado los parámetros morfométricos: área, perímetro, circularidad, forma, ancho, largo, elongación y alargamiento, siendo los dos primeros (transformados logarítmicamente) y los tercero y cuarto, los que han resultado ser más relevantes, tras el análisis jerárquico de sus distribuciones. La agrupación k-medias ha permitido discriminar en estos inventarios: 6587 pequeñas depresiones, cenotes y dolinas secas, muy condicionadas a la estructura de impacto Chicxulub, 4428 uvalas, 406 poljes, 89 grandes depresiones, más allá del borde exterior de Chicxulub , y 5176 dolinas tipo cockpit concentradas sobre la Sierra de Ticul y diseminadas en zonas de lomerios. Finalmente, se han establecido las distribuciones de sus parámetros morfométricos más relevantes, característicos de cada una de estas agrupaciones.
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50

Abdulmanova, I. F., and E. A. Igosheva. "Comparison of bog phytocenosis ecotopes parameters and peat deposit depths of the Beloe bog (Perm region, Russia)." Anthropogenic Transformation of Nature 7, no. 1 (2021): 48–64. http://dx.doi.org/10.17072/2410-8553-2021-1-48-64.

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Abstract:
It is known that phytoindication of the nature and depth of peat deposits is possible only when, among other factors, the geographical and geomorphological position of the bog systems is taken into account. The aim of this study is to determine whether or not there is a relationship between peat deposit thickness, phytocenosis composition and ecological parameters of plant habitats, using the example of the Beloe Bog located in the Sylvensko-Irenskaya lowland in the south-east of Perm Krai. Measure ments of the depth of the peat deposit were carried out using a peat probe, followed by the determination of the volumes of the peat bog in the GIS (ArcGIS (ESRI)). The diversity of peatland plant com-munities is described, their ecological-cenotic analysis and phytoindication analysis of ecotopes is carried out using Ellenberg and Landolt ecological scales using EcoScaleWin software. The results allow to update the stock data of geological exploration 1969. Ecological-cenotic and phytoindication analyzes revealed differences between pine-dwarf shrub-sphagnum and birch-menyanthes-sphagnum communities. A Spearman correlation coefficient demonstrated a relationship between peat deposit depths and the proportion of Water-Swamp ecological-cenotic group species in the communities, as well as with a number of ecological parameters of the ecotopes. The use of two different ecological scales revealed inconsistency between them. The article substantiates the chosen spatial tactics for measuring the peatland depth of a small irregularly shaped bog and also calculates the time required to measure the thickness of a conven-tional peat deposit of 1000 hectares. The relationship of this work to ongoing palaeoecological research in Perm Krai is highlighted. A comparison is made between the available data on the Beloe Bog and the results of phytoindication studies of the peatland thickness of Western Siberia known to the authors. The limitations and prospects of a series of similar studies in Perm Krai, which will reveal regional and zonal patterns in the spatial structure of bog communities and their relation to the thickness of peat deposits, are considered.
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