Log in

Relevant bibliographies by topics / Disturbed environments / Journal articles

To see the other types of publications on this topic, follow the link: Disturbed environments.

Journal articles on the topic 'Disturbed environments'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Disturbed environments.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Schultze, V., R. Stolz, R. Ijsselsteijn, V. Zakosarenko, L. Fritzsch, F. Thrum, E. Il'ichev, and H. G. Meyer. "Integrated SQUID gradiometers for measurement in disturbed environments." IEEE Transactions on Appiled Superconductivity 7, no. 2 (June 1997): 3473–76. http://dx.doi.org/10.1109/77.622141.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Schultze, V., R. Ijsselsteijn, R. Stolz, and V. Zakosarenko. "High Tc SQUIDs for Unshielded Measuring in Disturbed Environments." Le Journal de Physique IV 06, no. C3 (April 1996): C3–367—C3–372. http://dx.doi.org/10.1051/jp4:1996356.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Toch, Hans. "Mainstreaming Disturbed Offenders in the Prison." Journal of Psychiatry & Law 21, no. 4 (December 1993): 503–14. http://dx.doi.org/10.1177/009318539302100405.

Full text

Abstract:

Can a prison justify maintaining an inmate in complete segregation, guarded by three officers around the clock? Or does the prison have the obligation to mainstream disturbed prisoners so as to provide them with social stimulation and developmental opportunities? The complexity of this issue of placement in special environments—particularly, in stimulus-deprived environments—is illustrated by a violent offender who presents a plausible case for the proposition that his (to date) 15-year dissociation enables him to preserve a precarious equilibrium. For this inmate, the prison-within-a-prison in which he lives is a niche that facilitates psychological survival. It follows that mainstreaming an individual thus situated must be gradually and incrementally undertaken, after notice and consultation with the prisoner and the staff.

APA, Harvard, Vancouver, ISO, and other styles

4

Bubnova, Olena. "Prediction of changes in the state of the geological environment in the mining region." E3S Web of Conferences 109 (2019): 00009. http://dx.doi.org/10.1051/e3sconf/201910900009.

Full text

Abstract:

The mining industry is fundamental in the violation of the natural environment and the creation of technogenic. Due to the fact that the natural, disturbed and technogenic environments are in direct contact with each other, there are a number of interrelations between them that affect the general state of the environment. It is shown that the interaction of disturbed and technogenic arrays with the natural geological environment leads to the development of negative processes in the form of landslides, flooding and drainage of territories. In turn, these negative processes lead to the formation of secondary disturbances in the natural environment and directly in disturbed and technogenic arrays - additional sedimentation and deformation of rocks, the formation of dips. The main reason for the development of such hazardous processes is the violation of the hydrogeological regime in the vast territories adjacent to the mine workings. Studies of the hydrogeological and hydrological regimes in disturbed and technogenic arrays are given. The processes of landslide formation and their causes in quarries and in dumps of enterprises mining various types of minerals are considered.

APA, Harvard, Vancouver, ISO, and other styles

5

Palmer, T. A., P. Uehling, and J. B. Pollack. "Using oyster tissue toxicity as an indicator of disturbed environments." International Journal of Environmental Science and Technology 12, no. 6 (February 17, 2015): 2111–16. http://dx.doi.org/10.1007/s13762-014-0745-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Bauernschubert, Elisabeth. "Recurrence and Transience of Critical Branching Processes in Random Environment with Immigration and an Application to Excited Random Walks." Advances in Applied Probability 46, no. 03 (September 2014): 687–703. http://dx.doi.org/10.1017/s0001867800007321.

Full text

Abstract:

We establish recurrence and transience criteria for critical branching processes in random environments with immigration. These results are then applied to the recurrence and transience of a recurrent random walk in a random environment on ℤ disturbed by cookies inducing a drift to the right of strength 1.

APA, Harvard, Vancouver, ISO, and other styles

7

Bauernschubert, Elisabeth. "Recurrence and Transience of Critical Branching Processes in Random Environment with Immigration and an Application to Excited Random Walks." Advances in Applied Probability 46, no. 3 (September 2014): 687–703. http://dx.doi.org/10.1239/aap/1409319555.

Full text

Abstract:

We establish recurrence and transience criteria for critical branching processes in random environments with immigration. These results are then applied to the recurrence and transience of a recurrent random walk in a random environment on ℤ disturbed by cookies inducing a drift to the right of strength 1.

APA, Harvard, Vancouver, ISO, and other styles

8

Munkholm, Mette S., and Esben Auken. "Electromagnetic Noise Contamination on Transient Electromagnetic Soundings in Culturally Disturbed Environments." Journal of Environmental and Engineering Geophysics 1, no. 2 (August 1996): 119–27. http://dx.doi.org/10.4133/jeeg1.2.119.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

TANAKA, Yuki, Toshiyuki NAKATA, and Hao Liu. "Aerodynamic Performance of Flapping and Revolving Wings Coping with Disturbed Environments." Proceedings of the JSME Conference on Frontiers in Bioengineering 2019.30 (2019): 2B12. http://dx.doi.org/10.1299/jsmebiofro.2019.30.2b12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Symonides, Ewa. "On the ecology and evolution of annual plants in disturbed environments." Vegetatio 77, no. 1-3 (November 1988): 21–31. http://dx.doi.org/10.1007/bf00045746.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Genovese, V., and A. M. Sabatini. "Differential Compassing Helps Human–Robot Teams Navigate in Magnetically Disturbed Environments." IEEE Sensors Journal 6, no. 5 (October 2006): 1045–46. http://dx.doi.org/10.1109/jsen.2006.881417.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Büchi, Lucie, and Séverine Vuilleumier. "Ecological strategies in stable and disturbed environments depend on species specialisation." Oikos 125, no. 10 (February 22, 2016): 1408–20. http://dx.doi.org/10.1111/oik.02915.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Piatti, Liliana, Paulo Matthes Orlandi de Amaro, Jhonatas Fernando de Jesus Araújo, Vitor Quadros Altamore Sanches, and Paulo Sérgio Bernarde. "Anurans of a disturbed area in Jarú, Rondônia, Brazil." Check List 8, no. 1 (February 1, 2012): 083. http://dx.doi.org/10.15560/8.1.083.

Full text

Abstract:

This paper presents a checklist of anurans species and their distribution in a disturbed area in the municipality of Jarú, Rondônia state, Brazil. Nineteen species belonging to eight families were sampled with pitfall traps and time constrained searches. About 70% of the species were found in a secondary forest and 40% were found only in this environment, while about 57% were found in pastures, with 26% of species being registered only in this habitat. Our results were similar to those of previous studies in other disturbed areas of Rondônia. Species that can be found in different habits were unevenly distributed, with forested environments harboring more species. Despite its nearness to Cerrado and the large number of open areas available, most species found are typical of the Amazon forest.

APA, Harvard, Vancouver, ISO, and other styles

14

Kendrick, G. A., S. Langtry, J. Fitzpatrick, R. Griffiths, and C. A. Jacoby. "Benthic microalgae and nutrient dynamics in wave-disturbed environments in Marmion Lagoon, Western Australia, compared with less disturbed mesocosms." Journal of Experimental Marine Biology and Ecology 228, no. 1 (October 1998): 83–105. http://dx.doi.org/10.1016/s0022-0981(98)00011-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Seburn, David C., and G. Peter Kershaw. "Changes in the active layer of a subarctic right-of-way as a result of a crude-oil spill." Canadian Journal of Earth Sciences 34, no. 12 (December 1, 1997): 1539–44. http://dx.doi.org/10.1139/e17-125.

Full text

Abstract:

The active layer of three distinct environments (undisturbed forest, moderately disturbed right-of-way, and severely disturbed trench) was examined during each of the 3 years following an experimental crude-oil spill in a black spruce forest in the Northwest Territories. The first year after the spill, the active layer in the oiled forest increased by >150%, in the oiled right-of-way by >80%, and in the oiled trench it did not change. By the third year, the active layers in all oiled environments were significantly deeper than their unoiled counterparts, and the active layer in the oiled trench was significantly deeper than that in the oiled forest. When compared with other studies for a crude-oil spill in a subarctic forested environment, this oil spill caused the greatest increase in thaw depths. This dramatic and persistent increase in thaw depth was likely a function of the high oil concentration, especially in areas where oil had pooled on the ground.

APA, Harvard, Vancouver, ISO, and other styles

16

Banitz, Thomas. "Spatially structured intraspecific trait variation can foster biodiversity in disturbed, heterogeneous environments." Oikos 128, no. 10 (July 9, 2019): 1478–91. http://dx.doi.org/10.1111/oik.05787.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Morelli, Federico, Timothy A. Mousseau, and Anders Pape Møller. "Cuckoos vs. top predators as prime bioindicators of biodiversity in disturbed environments." Journal of Environmental Radioactivity 177 (October 2017): 158–64. http://dx.doi.org/10.1016/j.jenvrad.2017.06.029.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Tremblay, Geneviève Dufour, and Stéphane Boudreau. "Black spruce regeneration at the treeline ecotone: synergistic impacts of climate change and caribou activityThis article is a contribution to the series Tree recruitment, growth, and distribution at the circumpolar forest–tundra transition." Canadian Journal of Forest Research 41, no. 3 (March 2011): 460–68. http://dx.doi.org/10.1139/x10-183.

Full text

Abstract:

Tree regeneration at treeline is often inhibited by harsh climatic conditions and ecological constraints such as the presence of a continuous lichen cover. The objective of this study was to verify if recent climate warming and increased caribou (Rangifer tarandus L.) activity, which destroys the lichen cover, could act synergistically to increase black spruce (Picea mariana (Mill.) B.S.P.) regeneration. We collected cones produced in 2006–2007 to compare seed viability with data from 1989 to 1995. We conducted experimental plantations (field and controlled conditions) to determine if germination and seedling emergence were higher in disturbed environments where mineral soil was exposed. We sampled naturally established seedlings to evaluate the relationship between the year of establishment and caribou activity and to compare growth in disturbed and undisturbed environments. We found that seed viability was significantly higher in 2006–2007 compared with 1989–1995. The number of germinated seeds per cone increased by a factor >1000. Germination and seedling establishment were higher in the disturbed environment (mineral soil). Finally, although seedling establishment in areas with continuous lichen cover was rather constant over the last 50 years, 73.5% of the seedlings recorded on bare mineral soil became established in the years following high caribou activity. Our results suggest that climate warming and caribou activity are likely to act synergistically to promote black spruce regeneration at treeline.

APA, Harvard, Vancouver, ISO, and other styles

19

Efird, K. D. "Disturbed Flow and Flow-Accelerated Corrosion in Oil and Gas Production." Journal of Energy Resources Technology 120, no. 1 (March 1, 1998): 72–77. http://dx.doi.org/10.1115/1.2795013.

Full text

Abstract:

The effect of fluid flow on corrosion of steel in oil and gas environments involves a complex interaction of physical and chemical parameters. The basic requirement for any corrosion to occur is the existence of liquid water contacting the pipe wall, which is primarily controlled by the flow regime. The effect of flow on corrosion, or flow-accelerated corrosion, is defined by the mass transfer and wall shear stress parameters existing in the water phase that contacts the pipe wall. While existing fluid flow equations for mass transfer and wall shear stress relate to equilibrium conditions, disturbed flow introduces nonequilibrium, steady-state conditions not addressed by these equations, and corrosion testing in equilibrium conditions cannot be effectively related to corrosion in disturbed flow. The problem in relating flow effects to corrosion is that steel corrosion failures in oil and gas environments are normally associated with disturbed flow conditions as a result of weld beads, pre-existing pits, bends, flanges, valves, tubing connections, etc. Steady-state mass transfer and wall shear stress relationships to steel corrosion and corrosion testing are required for their application to corrosion of steel under disturbed flow conditions. A procedure is described to relate the results of a corrosion test directly to corrosion in an operation system where disturbed flow conditions are expected, or must be considered.

APA, Harvard, Vancouver, ISO, and other styles

20

Searight, H. Russell, Priscilla R. Searight, and Ellen Scott. "Family Environments of Children with School Behavior Problems." Psychological Reports 60, no. 3_part_2 (June 1987): 1263–66. http://dx.doi.org/10.1177/0033294187060003-252.1.

Full text

Abstract:

The Family Environment Scale was administered to 46 mothers whose children exhibited behavior problems at school and who had been referred for psychoeducational evaluation. When scores were compared with the norms for both nondistressed and distressed families, significant differences were noted on nine and five of the 10 subscales. Such findings suggest that this sample exhibits family environments that are more structured than those of the normative group and not as disturbed as those of the distressed group. Minimal subscale differences were found among three different recommended educational placements. Means and standard deviations for the three groups and the entire sample are provided.

APA, Harvard, Vancouver, ISO, and other styles

21

Wafula, Matthews, Agnes W. Muthumbi, Virginia Wangondu, Charles Kihia, and Julius Okondo. "Nematodes as bio-indicators of physical disturbance of marine sediments following polychaete bait harvesting." Western Indian Ocean Journal of Marine Science 19, no. 2 (April 2, 2021): 117–30. http://dx.doi.org/10.4314/wiojms.v19i2.9.

Full text

Abstract:

Sediment disturbance in marine environments is caused by activities including polychaete bait harvesting, trawling, dredging, sediment erosion and treading. These activities affect the benthic communities by changing the densities, community assemblage and diversity. The aim of this study was to evaluate the potential of nematodes as indicators of sediments disturbance following polychaete bait harvesting. The study was conducted in three sites experiencing different bait harvesting intensities in Mida Creek, Kenya. Sediment samples were collected from the mudflats during low tide, preserved in 5% formalin and transported to the laboratory for processing and identification of nematodes. The highly disturbed site recorded the lowest nematode genus richness while the less disturbed sites had the highest. Overall, the most abundant nematode genera in the non-disturbed (Dabaso) and less disturbed sites (Kirepwe) were selective deposit feeders (Spirinia and Terschellingia), while most disturbed sites (e.g. Mayonda) had predators/omnivores (Pheronus, Aporcelaimellus) and selected members of the genus Spirinia. The disturbed site was characterised by low nematode diversity (H’) and low dominance (D) while the non-disturbed and less disturbed sites had higher diversity and dominance. Clearly, nematode community assemblage, diversity and feeding guilds changed following disturbance to a low diversity that favoured higher proportions of predator/omnivore taxa.

APA, Harvard, Vancouver, ISO, and other styles

22

Weaver, T., D. Gustafson, and J. Lichthardt. "Plants Colonizing Disturbed Areas in Fifteen Rocky Mountain Environments - Weeds and Reclamation Candidates." UW National Parks Service Research Station Annual Reports 17 (January 1, 1993): 20–28. http://dx.doi.org/10.13001/uwnpsrc.1993.3133.

Full text

Abstract:

We list plants whch are commonly established in road cuts in fifteen major Northern Rocky Mountain environmental types. We expect them to establish well on new disturbances in the same environmental types. Thus, our list of natives can be used to choose plants for reintroduction of natives to construction sites and other disturbed areas; additional data on life form, aggressiveness (cover), and altitudinal distribution will be useful for choosing among seeding candidates and selecting seed sources for the reseeding. And, our list of establishing exotics will identify the weeds most likely to colonize a site, their aggressiveness on disturbed sites, and their capacity to enter adjacent undisturbed vegetation; this list will caution against introduction of certain exoti (e.g. Poa pratensis, Phleum pratense, and most Trifoliums-- as well as noxious weeds) and will be the basis for plans to control locally noxious exotics early and aggressively.

APA, Harvard, Vancouver, ISO, and other styles

23

Robins, Joseph G., Craig W. Rigby, and Kevin B. Jensen. "Genotype × Environment Interaction Patterns in Rangeland Variety Trials of Cool-Season Grasses in the Western United States." Agronomy 10, no. 5 (April 28, 2020): 623. http://dx.doi.org/10.3390/agronomy10050623.

Full text

Abstract:

Rangeland revegetation is necessary to stabilize disturbed sites and increase forage production, but frequently fails due to a variety of environmental and biotic factors. Plant breeding efforts in perennial cool-season grasses result in the development of potential cultivars that must be evaluated in multi-environment trials to determine their level of adaptation. This study evaluated 49 cultivars for stand frequency and dry matter yield over five years at five environments in the Intermountain and High Plains regions of the United States. The results were significant differences among the included cultivars for both traits across and within environments. Yet, there was also crossover genotype × environment interaction. Thus, highest performing cultivars were to some extent dependent on the environment. Hycrest II crested wheatgrass and Vavilov II Siberian wheatgrass possessed high stand frequency (>80 %) and dry matter yield (>800 kg·ha−1) across environments and within environments except at the Eureka, UT environment where they possessed low stand frequency. These cultivars, and species, also possessed high productivity and stability for both traits. Thus, breeding efforts in the species resulted in widely adapted cultivars that may lack specific adaptation to some environments.

APA, Harvard, Vancouver, ISO, and other styles

24

Barradas, I. "Competition during colonization vs competition after colonization in disturbed environments: A metapopulation approach." Bulletin of Mathematical Biology 58, no. 6 (November 1996): 1187–207. http://dx.doi.org/10.1016/s0092-8240(96)00043-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Ducasse, Hugo, Audrey Arnal, Marion Vittecoq, Simon P. Daoust, Beata Ujvari, Camille Jacqueline, Tazzio Tissot, et al. "Cancer: an emergent property of disturbed resource‐rich environments? Ecology meets personalized medicine." Evolutionary Applications 8, no. 6 (March 26, 2015): 527–40. http://dx.doi.org/10.1111/eva.12232.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Lo, Yu-Lung. "Intensity compensation for passive in-fibre Fabry-Perot sensors in high disturbed environments." Electronics Letters 34, no. 4 (1998): 394. http://dx.doi.org/10.1049/el:19980287.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Barradas, Ignacio, Hal Caswell, and Joel E. Cohen. "Competition during colonization vs competition after colonization in disturbed environments: A metapopulation approach." Bulletin of Mathematical Biology 58, no. 6 (November 1996): 1187–207. http://dx.doi.org/10.1007/bf02458389.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Yıldırım, Yeşerin, Jon Tinnert, and Anders Forsman. "Contrasting patterns of neutral and functional genetic diversity in stable and disturbed environments." Ecology and Evolution 8, no. 23 (November 11, 2018): 12073–89. http://dx.doi.org/10.1002/ece3.4667.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Firdhous, Mohamed Fazil Mohamed, and B. H. Sudantha. "{Cloud, IoT}-powered smart weather station for microclimate monitoring." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 1 (January 1, 2020): 508. http://dx.doi.org/10.11591/ijeecs.v17.i1.pp508-515.

Full text

Abstract:

<p>Microclimate monitoring is important in many practical situations involving agriculture, archaeology and other environments. Microclimate is defined as the environmental conditions that differs from that of surrounding areas. In certain situations, these different conditions are artificially generated for creating a conducive environment for achieving better results. Environments such as greenhouses and climate controlled beehives require to maintain their environments within close variations for optimum results. Similarly archaeological sites including show caves, frescos and parks get disturbed easily by the changes in their immediate environments. Hence monitoring and managing these environments is a must for the proper maintenance of them. In this paper, the authors present an IoT enabled microclimate monitoring weather station that can be installed anywhere and monitor the required parameters from remotely. The modular design enables the station to be easily modified to suit any environment. The weather station collects and transmit data at fixed intervals to the cloud powered processing system over the mobile communication network . The sensors have been calibrated using the standard calibration methods using conventional devices as references. The results obtained from the prototype shows that the weather station works satisfactorily reading the real environment conditions.</p>

APA, Harvard, Vancouver, ISO, and other styles

30

Leyte-Manrique, Adrian, Buelna-Chontal Abel Antonio, Torres-Díaz Miguel Alejandro, Christian Berriozabal-Islas, and Carlos Alberto Maciel-Mata. "A Comparison of Amphibian and Reptile Diversity Between Disturbed and Undisturbed Environments of Salvatierra, Guanajuato, Mexico." Tropical Conservation Science 12 (January 2019): 194008291982999. http://dx.doi.org/10.1177/1940082919829992.

Full text

Abstract:

Amphibians and reptiles are two groups of vertebrates that are sensitive to changes in their environment. These changes are mostly caused by human activities, which affect the abundance, composition, and distribution of these vertebrates. In this study, we compare the richness and taxonomic diversity of herpetofauna between undisturbed environments (tropical deciduous forest = TDF) and disturbed environments (corn fields = CF) near the towns of Urireo (URI) and San Nicolas de los Agustinos (SNA) in Salvatierra, Guanajuato. We recorded a total of 19 species in the two locations (4 amphibian and 15 reptile species). At the URI locality, 12 species were recorded in CF and 10 in TDF. At the SNA locality, eight species were recorded in CF and seven species in TDF. In addition, we found that overall taxonomic distinctness was greater at URI than SNA across both types of vegetation, with the highest diversity found in TDF of URI. Seven of the 19 species recorded are current allocated to some protection category of NOM-059-SEMARNAT-2010: Lithobates neovolcanicus, Kinosternon integrum, Sceloporus grammicus, Lampropeltis polyzona, Masticophis mentovarius, Salvadora bairdi, and Thamnophis melanogaster differing from other mechanisms such as the International Union for Conservation of Nature and Environmental Vulnerability Score. Our results suggest that carrying out long-term studies that include diversity and taxonomic distinctness in environments with different levels of disturbance, in addition to including characteristics of natural history, might enhance the development of more efficient conservation strategies for these vertebrates.

APA, Harvard, Vancouver, ISO, and other styles

31

Cantor, Mauricio, Letícia Andrade Ferreira, Wesley Rodrigues Silva, and Eleonore Zulnara Freire Setz. "Potential seed dispersal by Didelphis albiventris (Marsupialia, Didelphidae) in highly disturbed environment." Biota Neotropica 10, no. 2 (June 2010): 45–51. http://dx.doi.org/10.1590/s1676-06032010000200004.

Full text

Abstract:

Urban forests are usually isolated and highly disturbed, however they are important shelters for tolerant animal species. Their food habits expose the different ecological roles these animals perform in the habitat. We analyzed the contribution of Didelphis albiventris Lund (1840), as a seed disperser, to the vegetation renewal of an urban forest fragment, describing its frugivorous diet and testing the viability of ingested seeds. Both male and female of white-eared opossum included a vast variety of items in their diet, mainly invertebrates and fruits. Fruits were consumed during all year round and seasonality was not observed. The majority of consumed fruits was from pioneer plant species, which is common in disturbed areas, in accordance to the opossum's opportunistic habits. The viability of ingested seeds, evaluated by linear logistic regression models applied to data from germination tests, was different of the seeds collected directly from ripe fruits; it varied among species, maybe due to the intrinsic characteristics of plant species. As a highly generalist species, D. albiventris can inhabit disturbed environments and then disperse seeds from pioneer plants, where the vegetation must be restored. It is crucial that this process does not depend only on the specialist frugivores, which are frequently absent in urban forest fragments. Therefore, the presence of generalist species of secondary environments has its importance emphasized.

APA, Harvard, Vancouver, ISO, and other styles

32

Chiu, J. J., D. L. Wang, S. Chien, R. Skalak, and S. Usami. "Effects of Disturbed Flow On Endothelial Cells." Journal of Biomechanical Engineering 120, no. 1 (February 1, 1998): 2–8. http://dx.doi.org/10.1115/1.2834303.

Full text

Abstract:

Atherosclerotic lesions tend to localize at curvatures and branches of the arterial system, where the local flow is often disturbed and irregular (e.g., flow separation, recirculation, complex flow patterns, and nonuniform shear stress distributions). The effects of such flow conditions on cultured human umbilical vein endothelial cells (HUVECs) were studied in vitro by using a vertical-step flow channel (VSF). Detailed shear stress distributions and flow structures have been computed by using the finite volume method in a general curvilinear coordinate system. HUVECs in the reattachment areas with low shear stresses were generally rounded in shape. In contrast, the cells under higher shear stresses were significantly elongated and aligned with the flow direction, even for those in the area with reversed flow. When HUVECs were subjected to shearing in VSF, their actin stress fibers reorganized in association with the morphological changes. The rate of DNA synthesis in the vicinity of the flow reattachment area was higher than that in the laminar flow area. These in vitro experiments have provided data for the understanding of the in vivo responses of endothelial cells under complex flow environments found in regions of prevalence of atherosclerotic lesions.

APA, Harvard, Vancouver, ISO, and other styles

33

Moura, Tânia Maria de, Alexandre Magno Sebbenn, Karina Martins, Maria Andreia Moreno, Giancarlo Conde Xavier Oliveira, Lázaro José Chaves, and Paulo Yoshio Kageyama. "Allelic diversity in populations of Solanum lycocarpum A. St.-Hil (Solanaceae) in a protected area and a disturbed environment." Acta Botanica Brasilica 25, no. 4 (December 2011): 937–40. http://dx.doi.org/10.1590/s0102-33062011000400023.

Full text

Abstract:

This study aimed to compare the genetic diversity of populations of Solanum lycocarpum A.St.-Hil between natural and human disturbed environments, with the assumption that protected areas have greater genetic diversity than disturbed areas. For this study, two populations were sampled in Goiás State, Brazil. One was located in a conservation unit, Serra de Caldas Novas State Park, in the Caldas Novas municipality. The other was located in a pasture area in the municipality of Morrinhos. The two populations are 41 km apart. We sampled 60 individuals from each population, which were genotyped with five microsatellite loci (SSR). The highest number of alleles was recorded in the population of the conservation unit, where we found 11 exclusive and five rare alleles. In the disturbed area, we recorded only three exclusive alleles and one rare allele. Although we did not observe significant inbreeding in these populations, genetic divergence between them was high (G ST (Hedrick)=0.147 =0.147) for a species with long distance seed dispersal. The results corroborate the hypothesis that the population in the less disturbed area harbors greater allelic diversity. They also confirm the effectiveness of using protected areas to preserve the genetic diversity of the species.

APA, Harvard, Vancouver, ISO, and other styles

34

Merritt, Richard W., M. Eric Benbow, and Pamela LC Small. "Unraveling an emerging disease associated with disturbed aquatic environments: the case of Buruli ulcer." Frontiers in Ecology and the Environment 3, no. 6 (August 2005): 323–31. http://dx.doi.org/10.1890/1540-9295(2005)003[0323:uaedaw]2.0.co;2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Rilov, G., and Y. Benayahu. "Vertical artificial structures as an alternative habitat for coral reef fishes in disturbed environments." Marine Environmental Research 45, no. 4-5 (May 1998): 431–51. http://dx.doi.org/10.1016/s0141-1136(98)00106-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Kerfoot, W. Charles, Foad Yousef, Sarah A. Green, Robert Regis, Robert Shuchman, Colin N. Brooks, Mike Sayers, Bruce Sabol, and Mark Graves. "Light detection and ranging (LiDAR) and multispectral studies of disturbed Lake Superior coastal environments." Limnology and Oceanography 57, no. 3 (April 30, 2012): 749–71. http://dx.doi.org/10.4319/lo.2012.57.3.0749.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Namura-Ochalska, Anna. "Expansion of Tussilago farfara L. in disturbed environments. II. Population reaction to simulated cultivation." Acta Societatis Botanicorum Poloniae 62, no. 1-2 (2014): 83–89. http://dx.doi.org/10.5586/asbp.1993.014.

Full text

Abstract:

The effects of systematic cutting, fragmentation and burying on weeded and renewing fallow plots on the density and morphological properties of vegetative and generative <i>Tussilago farfara</i> shoots were studied. As the presence of other species increased on fallow plots, the <i>T. farfara</i> population regressed. Under such conditions, fragmentation and burying ensured the renewal and expansion of individuals and persistence of the population. On weeded plots, however, additional cultivation reduced the population density and mean values of the analyzed shoot parameters. These results show that systematic cultivation is a prerequisite for persistence of <i>T. farfara</i> populations. Its favourable effect is exerted through eliminating potential competitors.

APA, Harvard, Vancouver, ISO, and other styles

38

Nunes, Hannah, Fabiana Lopes Rocha, and Pedro Cordeiro-Estrela. "Bats in urban areas of Brazil: roosts, food resources and parasites in disturbed environments." Urban Ecosystems 20, no. 4 (December 27, 2016): 953–69. http://dx.doi.org/10.1007/s11252-016-0632-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Martineau, Julie, David Pothier, and Daniel Fortin. "Processes driving short-term temporal dynamics of small mammal distribution in human-disturbed environments." Oecologia 181, no. 3 (March 22, 2016): 831–40. http://dx.doi.org/10.1007/s00442-016-3613-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Royer, Dana L., Leo J. Hickey, and Scott L. Wing. "Ecological conservatism in the “living fossil” Ginkgo." Paleobiology 29, no. 1 (2003): 84–104. http://dx.doi.org/10.1666/0094-8373(2003)029<0084:ecitlf>2.0.co;2.

Full text

Abstract:

The living species Ginkgo biloba is phylogenetically isolated, has a relictual distribution, and is morphologically very similar to Mesozoic and Cenozoic congenerics. To investigate what adaptations may have allowed this lineage to persist with little or no morphological change for over 100 Myr, we analyzed both sedimentological and floral data from 51 latest Cretaceous to middle Miocene Ginkgo-bearing fossil plant sites in North America and northern Europe. The resulting data indicate that throughout the late Cretaceous and Cenozoic Ginkgo was largely confined to disturbed streamside and levee environments, where it occurred with a consistent set of other plants. These inferred habitats are surprising because the life-history traits of Ginkgo (e.g., slow growth rate, late reproductive maturity, extended reproductive cycle, large and complex seeds, large and slowly developing embryos) are counter to those considered advantageous in modern disturbed habitats. Many flowering plant lineages first appeared or became common in disturbed riparian habitats, and are inferred to have had reproductive and growth traits (e.g., rapid reproduction, small easily dispersed seeds, rapid growth) suited to such habitats. Paleoecological inferences based on both morphology and sedimentary environments thus support the idea that Ginkgo was displaced in riparian habitats by angiosperms with better adaptations to frequent disturbance.

APA, Harvard, Vancouver, ISO, and other styles

41

Andreev, Andrei A., Steven L. Forman, Ólafur Ingólfsson, and William F. Manley. "Middle Weichselian environments on western Yamal Peninsula, Kara Sea based on pollen records." Quaternary Research 65, no. 02 (March 2006): 275–81. http://dx.doi.org/10.1016/j.yqres.2005.11.005.

Full text

Abstract:

AbstractPollen data from two sections from a coastal cliff on the western Yamal Peninsula (69°43.27′N, 66°48.80′E) document the environmental history during the Karginsky (Middle Weichselian) interstadial. Low pollen concentrations, high amounts of redeposited pollen, and relatively high presence of Artemisia pollen characterize sediments deposited at about 33,000 14C yr B.P. Grass-sedge plant associations with few other herbs occupied the area during the late Karginsky interstadial. Artemisia pollen may indicate rather xerophytic vegetation and disturbed soils in the area. The dominance of redeposited pollen reflects scarce (disturbed) vegetation cover and low pollen productivity. The climate was relatively cold and dry. Sediments dated to 32,400 14C yr B.P. contain fewer redeposited pollen and concentration of non-redeposited pollen is significantly higher. Pollen contents indicate the dominance of tundra-like grass-sedge vegetation and more humid conditions. Pollen records dated between 30,100 and 25,100 14C yr B.P. also reflect scarce tundra-like vegetation during this interval. The presence of Betula nana and Salix pollen may reflect limited presence of shrub communities. This suggests that the climate was somewhat warmer during the latter part of the interstadial. However, generally the pollen records show that harsh environmental conditions prevailed on the Yamal Peninsula during the Karginsky interstadial.

APA, Harvard, Vancouver, ISO, and other styles

42

Gibb, Karen, Claire Streten-Joyce, and David Parry. "Microbes and disturbance." Microbiology Australia 28, no. 3 (2007): 131. http://dx.doi.org/10.1071/ma07131.

Full text

Abstract:

The microbiology of disturbed environments is a vigorous area of research that has benefited from cultivation-independent molecular techniques. Our challenge now is to embrace the concept of ?microbial landscapes? in all its complexity and recognise the multidisciplinary nature of molecular and microbial ecology.

APA, Harvard, Vancouver, ISO, and other styles

43

Kenne, Diego Costa, and Paula Beatriz Araujo. "Balloniscus glaber (Crustacea, Isopoda, Balloniscidae), a habitat specialist species in a disturbed area of Brazil." Iheringia. Série Zoologia 105, no. 4 (December 2015): 430–38. http://dx.doi.org/10.1590/1678-476620151054430438.

Full text

Abstract:

ABSTRACT Balloniscus glaber Araujo & Zardo, 1995 (Balloniscidae), a Neotropical Oniscidea, has been recorded historically in environments with low or no human interference. In one of these areas, it was determined as aK-strategist. Recently, however, this species was documented in a disturbed forest within urban limits. The present work revealed that the population in the urban area has high density, high number of ovigerous females and mancae in the population, a long reproductive period, and early sexual maturity. These results suggest that modified environments may provide favorable conditions and that the species is not negatively affected by human influence.

APA, Harvard, Vancouver, ISO, and other styles

44

Aguilon, Dianne Joy, András Vojtkó, Csaba Tölgyesi, László Erdős, Péter János Kiss, Gábor Lőrinczi, Orsolya Juhász, Kata Frei, and Zoltán Bátori. "Karst environments and disturbance: evaluation of the effects of human activity on grassland and forest naturalness in dolines." Biologia 75, no. 10 (May 18, 2020): 1529–35. http://dx.doi.org/10.2478/s11756-020-00518-7.

Full text

Abstract:

Abstract Karst depressions (dolines) have the potential to act as safe havens for a high diversity of valuable species. We showed that local anthropogenic disturbances play a significant role in determining the naturalness of dolines. We compared the number of specialist species, competitor species, generalist species and species of disturbed habitats between natural and disturbed dolines in two Hungarian karst areas, where different types of anthropogenic disturbances have been shaping the vegetation for centuries. We found that these disturbances have the potential to negatively influence the naturalness of dolines, reducing the number of valuable species, thus affecting the conservation value of dolines. To maintain the naturalness of vegetation in these doline habitats, the populations of ruderal competitors should be eliminated, and sustainable forest management should be adapted. However, there are still open questions about the effects of different disturbances on the naturalness in dolines that need to be answered to determine which conservation strategies will be particularly suitable for valuable species in a warming climate.

APA, Harvard, Vancouver, ISO, and other styles

45

Candolin, U. "The complexity of fish communication in human-disturbed environments: a comment on Radford et al." Behavioral Ecology 25, no. 5 (May 12, 2014): 1031–32. http://dx.doi.org/10.1093/beheco/aru075.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Rocha, Alejandra Mariana, Andrea González-Reyes, José Corronca, Sandra Rodríguez-Artigas, Irene Doma, Elma Yanina Repp, and Ximena Acosta. "Tardigrade diversity: an evaluation of natural and disturbed environments of the province of Salta (Argentina)." Zoological Journal of the Linnean Society 178, no. 4 (November 22, 2016): 755–64. http://dx.doi.org/10.1111/zoj.12476.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Grassle, J. Frederick, and Linda S. Morse-Porteous. "Macrofaunal colonization of disturbed deep-sea environments and the structure of deep-sea benthic communities." Deep Sea Research Part A. Oceanographic Research Papers 34, no. 12 (December 1987): 1911–50. http://dx.doi.org/10.1016/0198-0149(87)90091-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Kamiński, Piotr, Tadeusz Barczak, Janina Bennewicz, Leszek Jerzak, Brendan P. Kavanagh, Halyna Tkachenko, Tomasz Stuczyński, Jędrzej Baszyński, Małgorzata Szady-Grad, and Alina Woźniak. "The role of aphids in the transfer of chemical elements in disturbed Polish saline environments." Science of The Total Environment 776 (July 2021): 145980. http://dx.doi.org/10.1016/j.scitotenv.2021.145980.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Mazerolle, M. J., and A. Desrochers. "Landscape resistance to frog movements." Canadian Journal of Zoology 83, no. 3 (March 1, 2005): 455–64. http://dx.doi.org/10.1139/z05-032.

Full text

Abstract:

An animal's capacity to recolonize a patch depends on at least two components: its ability to detect the patch and its ability to reach it. However, the disruption of such processes by anthropic disturbances could explain low animal abundance patterns observed by many investigators in certain landscapes. Through field experiments, we compared the orientation and homing success of northern green frogs (Rana clamitans melanota Rafinesque, 1820) and northern leopard frogs (Rana pipiens Schreber, 1782) translocated across disturbed or undisturbed surfaces. We also monitored the path selected by individuals when presented with a choice between a short distance over a disturbed surface and a longer, undisturbed route. Finally, we measured the water loss and behaviour of frogs on substrates resulting from anthropogenic disturbances and a control. When presented with a choice, 72% of the frogs avoided disturbed surfaces. Although able to orient towards the pond of capture when translocated on disturbed surfaces, frogs had a lower probability of homing successfully to the pond than when translocated at a similar distance on an undisturbed surface. Frogs lost the most water on substrates associated with disturbance and in the absence of cover. Our data illustrate that anthropically disturbed areas devoid of cover, such as mined peatlands and agricultural fields, disrupt the ability of frogs to reach habitat patches and are likely explanations to their reduced abundance patterns in such environments.

APA, Harvard, Vancouver, ISO, and other styles

50

Fort, Kevin T., and Ken A. Otter. "Effects of Habitat Disturbance on Reproduction in Black-Capped Chickadees (Poecile Atricapillus) in Northern British Columbia." Auk 121, no. 4 (October 1, 2004): 1070–80. http://dx.doi.org/10.1093/auk/121.4.1070.

Full text

Abstract:

Abstract Avian species that persist in breeding in disturbed habitats are often thought to be less affected by disturbance than habitat specialists lost following disturbances, yet there is growing evidence that human-altered environments may negatively affect reproductive behavior and nest success of those generalists as well. We compared nest success of Blackcapped Chickadees (Poecile atricapillus) in two adjacent habitats: a mature mixed-wood forest (undisturbed) and a forest regenerating after logging (disturbed). Despite similar breeding densities, proportion of nests that successfully fledged young was lower in the disturbed habitat than in the undisturbed habitat. Abandonment was the most common cause of nest failure. A within-habitat comparison of the social rank of birds revealed that low-ranking birds had lower nest success than high-ranking birds in the disturbed, but not in the undisturbed, habitat. Clutch size and brood size of nests that progressed to the point of hatch did not differ significantly between habitats. Average total number of fledglings produced per pair, though not significantly different, was suggestively lower in the disturbed habitat. Across habitats, nests situated in snags with lower amounts of internal decay were more successful. Successful nests were also located in sites with higher canopy height, low understory density below 1 m, and higher understory density between 2 and 3 m—all attributes generally associated with undisturbed, mature forests in the region. Our results provide evidence that disturbed habitats may represent poor-quality habitat for this forest generalist, and that habitat quality differentially affects individuals, depending on their dominance rank.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!