Relevant bibliographies by topics / Habitat selection analysis

Academic literature on the topic 'Habitat selection analysis'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Habitat selection analysis"

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Tadesse, Solomon A., and Burt P. Kotler. "Habitat Choices of Nubian Ibex (Capra Nubiana) Evaluated with A habitat Suitability Modeling and Isodar Analysis." Israel Journal of Ecology and Evolution 56, no. 1 (May 6, 2010): 55–74. http://dx.doi.org/10.1560/ijee.56.1.55.

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The value of a habitat for a forager may be affected by habitat characteristics related to food availability, energetic costs of foraging, predation costs, and the foraging opportunities available in other habitats. Nubian ibex (Capra nubiana) are stout, sure-footed social wild goats that inhabit arid landscapes with steep terrain. We investigated their habitat selection behavior using indicators to (1) develop a habitat suitability index (HSI) model that would account for the variation in the activity densities of Nubian ibex across habitat types and seasons, (2) apply the isodar technique to look for density-dependent habitat selection behavior in Nubian ibex, and (3) investigate the proximate environmental factors that correlate to relative activity densities of Nubian ibex. We determined relative densities of the ibex by recording sightings of animals along standard walking transects. We incorporated the habitat variables that had greatest influence on the densities of Nubian ibex into habitat suitability index models for both spring and summer seasons.The HSI models revealed that Nubian ibex most preferred open cliff face habitat offering safety during the spring season, but their habitat preference shifted towards an area with watered gardens ("grave area habitat") during the summer season. Significant isodars were only obtained for the summer season comparisons between grave area versus cliff face, and between grave area versus plateau habitats. The slopes of the isodars suggest that the grave area habitat is 10.5 and 7.6 times more productive than the plateau and the cliff face habitats, respectively. Our results suggest that the relative abundances and habitat preferences of Nubian ibex varied with the seasonal availability of habitat resources, extent of predation risks, and human nuisance disturbances across the landscape. We recommend that wildlife managers dealing with the conservation and protection of the endangered Nubian ibex should focus on the various ecological and anthropogenic factors governing the habitat selection and preferences.
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Moore, Benjamin D., Graeme Coulson, and Sarah Way. "Habitat selection by adult female eastern grey kangaroos." Wildlife Research 29, no. 5 (2002): 439. http://dx.doi.org/10.1071/wr01057.

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We determined patterns of habitat selection in the winter–spring period by adult female eastern grey kangaroos (Macropus giganteus) at Yan Yean Reservoir Catchment near Melbourne, Victoria, during 1994–95. We assessed habitat selection at two levels by radio-tracking 11 adult female kangaroos. The 95% isopleth harmonic mean home-range size (mean = 62.3 ha) was the smallest recorded for female eastern grey kangaroos. No range encompassed all of the habitat types available in the study area, and the mix and rankings of habitats selected at this level varied amongst individuals when compared by compositional analysis with available habitats. Selection of habitats at the within-range level also varied among individuals and differed between night and day for many individuals, but not for the population mean. Individuals selected strongly for good foraging habitat within their ranges. In particular, grassy clearings were used by all individuals and were selected strongly by day, night or at both times.
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Thiebot, Jean-Baptiste, Amélie Lescroël, David Pinaud, Philip N. Trathan, and Charles-André Bost. "Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins." Antarctic Science 23, no. 2 (January 5, 2011): 117–26. http://dx.doi.org/10.1017/s0954102010000957.

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AbstractFor land-breeding marine organisms such as seabirds, knowledge about their habitat use has mainly been gained through studies of breeding individuals that are constrained to return frequently to their breeding grounds. In this study we set out to measure whether: a) habitat selection in the non-breeding period predicts habitat selection in the breeding period, and b) whether breeding individuals concentrated their activity on the closest suitable habitats. MacaroniEudyptes chrysolophusand gentooPygoscelis papuapenguins, two marine predators with contrasting foraging strategies, were tracked from the Iles Kerguelen and their habitat selection investigated through Mahalanobis distances factorial analysis. This study presents the first data about gentoo penguins’ juvenile dispersal. For both species, results showed 6.9 times larger maximum ranges and up to 12.2 times greater distances travelled during the non-breeding period. Habitat suitability maps suggested both species made similar environmental selections whatever the period. Macaroni penguins targeted pelagic areas beyond the shelf break while gentoo penguins always remained over the shelf. We consider the ecological significance of larger scale movements made outside the breeding period and suggest that this non-breeding period is of particular interest when attempting to understand an animal's habitat selection.
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Singh, N. J., N. G. Yoccoz, N. Lecomte, S. D. Côté, and J. L. Fox. "Scale and selection of habitat and resources: Tibetan argali (Ovis ammon hodgsoni) in high-altitude rangelands." Canadian Journal of Zoology 88, no. 5 (May 2010): 436–47. http://dx.doi.org/10.1139/z10-015.

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Processes of habitat selection occur at multiple spatiotemporal scales, where large-scale selection is often determined by predation risk and landscape features, and finer scale selection by resource abundance and quality. To determine whether this hierarchy exists in relatively homogenous systems, we investigated patterns of habitat (landscape topography) and resource (feeding patch and plant group) selection by a medium-sized ungulate, the Tibetan argali ( Ovis ammon hodgsoni Blyth, 1840), in the high-altitude rangelands of the Indian Trans-Himalaya. We ran ecological niche factor analyses to explore habitat selection, bias-reduced logistic regression to analyze the selection of feeding patches, fuzzy correspondence analysis for vegetation categories, and microhistological analyses for the selection of plant groups. For springs and summers of 2005–2007, argali preferred an intermediate range of altitude, slope, and forage abundance. Selection of feeding patch was mainly determined by forage quality, not biomass, selecting graminoids and forbs, in particular. The avoidance of habitat with high forage abundance could indicate a trade-off between forage quality and quantity; a pattern consistent at the feeding-patch scale. Our results provide evidence that the hierarchical pattern of habitat selection probably also occurs in relatively homogeneous systems.
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BINGHAM, RALPH L., LEONARD A. BRENNAN, and BART M. BALLARD. "Misclassified Resource Selection: Compositional Analysis and Unused Habitat." Journal of Wildlife Management 71, no. 4 (June 2007): 1369–74. http://dx.doi.org/10.2193/2006-072.

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Battin, James, and Joshua J. Lawler. "Cross-scale Correlations and the Design and Analysis of Avian Habitat Selection Studies." Condor 108, no. 1 (February 1, 2006): 59–70. http://dx.doi.org/10.1093/condor/108.1.59.

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Abstract It has long been suggested that birds select habitat hierarchically, progressing from coarser to finer spatial scales. This hypothesis, in conjunction with the realization that many organisms likely respond to environmental patterns at multiple spatial scales, has led to a large number of avian habitat studies that have attempted to quantify habitat associations at multiple scales. Typically, multiscale habitat selection studies involve the assessment of habitat selection separately at two or more scales. Until recently, these studies have ignored the potential for cross-scale correlations: correlations among habitat variables across scales. If environmental patterns are correlated across the scales being analyzed, researchers using traditional analytical methods may reach erroneous conclusions about the presence or strength of habitat associations at a given scale. We discuss the ways in which cross-scale correlations manifest themselves in two types of habitat selection studies: (1) “constrained” designs that assume a hierarchical ordering of habitat selection decisions, and (2) “unconstrained” designs, which do not assume such a selection process. We demonstrate approaches for quantifying and modeling cross-scale correlations, including a simulation model, a variance decomposition technique, and a hierarchical modeling approach based on classification tree analysis. We conclude that cross-scale correlations have the potential to affect data interpretation in all types of habitat selection studies and that, even with careful attention to experimental design and the application of newly developed statistical techniques, it is likely their effects cannot be eliminated.
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Martin, Jodie, Mathieu Basille, Bram Van Moorter, Jonas Kindberg, Dominique Allainé, and Jon E. Swenson. "Coping with human disturbance: spatial and temporal tactics of the brown bear (Ursus arctos)." Canadian Journal of Zoology 88, no. 9 (September 2010): 875–83. http://dx.doi.org/10.1139/z10-053.

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In human-dominated landscapes, species with large spatial requirements, such as large carnivores, have to deal with human infrastructure and activities within their home ranges. This is the case for the brown bear ( Ursus arctos L., 1758) in Scandinavia, which is colonizing more human-dominated landscapes, leading inevitably to an overlap between their home ranges and anthropogenic structures. In this study, we investigated fine-scale habitat selection by brown bears to examine how they deal with this potential disturbance. Using Global Positioning System (GPS) data, we studied (i) habitat selection of female brown bears within their home range and (ii) the influence of diurnal variation in human disturbance on fine-scale habitat use. As expected, females selected habitats within their home range that provided abundant food resources and minimized human-caused disturbance. In addition, our temporal analysis of habitat selection revealed an avoidance of disturbed areas and a selection of slopes by bears during periods of highest human activities, i.e., during daylight hours. We clearly demonstrate the importance of considering the fluctuations in human activity when studying habitat selection, especially at fine spatial scales. Failing to do so may considerably reduce the power to detect important fine-scale habitat-selection behaviors.
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Loseto, L. L., P. Richard, G. A. Stern, J. Orr, and S. H. Ferguson. "Segregation of Beaufort Sea beluga whales during the open-water season." Canadian Journal of Zoology 84, no. 12 (December 2006): 1743–51. http://dx.doi.org/10.1139/z06-160.

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Population segregation by habitat use occurs because energy requirements and survival strategies vary with age, sex, size, and reproductive stage. From late summer to early fall in 1993, 1995, and 1997, relative length (age), sex, and reproductive status of satellite-tagged beluga whales ( Delphinapterus leucas (Pallas, 1776)) in the eastern Beaufort Sea were tested for habitat segregation. We used (i) resource selection function models to evaluate how belugas used areas of varying sea ice concentration and shelf habitat and (ii) distance analysis to measure the selection of areas varying in distance to mainland and island coastlines. Resource selection functions and distance analysis established that habitat selection differed with length, sex, and reproductive status of whales: (i) females with calves and smaller males selected open-water habitats near the mainland; (ii) large males selected closed sea ice cover in and near the Arctic Archipelago; and (iii) smaller males and two females with calves (not newborn) selected habitat near the ice edge. The segregation of habitat use according to sex, age, and reproductive status relates to the different resources required at different life stages and may represent characteristics of beluga social structure. We discuss our results in the context of two common sexual segregation hypotheses and conclude that summer habitat segregation of belugas reflects differences in foraging ecology, risk of predation, and reproduction.
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Sun, Yue, Yanze Yu, Jinhao Guo, and Minghai Zhang. "The Winter Habitat Selection of Red Deer (Cervus elaphus) Based on a Multi-Scale Model." Animals 10, no. 12 (December 21, 2020): 2454. http://dx.doi.org/10.3390/ani10122454.

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Single-scale frameworks are often used to analyze the habitat selections of species. Research on habitat selection can be significantly improved using multi-scale models that enable greater in-depth analyses of the scale dependence between species and specific environmental factors. In this study, the winter habitat selection of red deer in the Gogostaihanwula Nature Reserve, Inner Mongolia, was studied using a multi-scale model. Each selected covariate was included in multi-scale models at their “characteristic scale”, and we used an all subsets approach and model selection framework to assess habitat selection. The results showed that: (1) Univariate logistic regression analysis showed that the response scale of red deer to environmental factors was different among different covariate. The optimal scale of the single covariate was 800–3200 m, slope (SLP), altitude (ELE), and ratio of deciduous broad-leaved forests were 800 m in large scale, except that the farmland ratio was 200 m in fine scale. The optimal scale of road density and grassland ratio is both 1600 m, and the optimal scale of net forest production capacity is 3200 m; (2) distance to forest edges, distance to cement roads, distance to villages, altitude, distance to all road, and slope of the region were the most important factors affecting winter habitat selection. The outcomes of this study indicate that future studies on the effectiveness of habitat selections will benefit from multi-scale models. In addition to increasing interpretive and predictive capabilities, multi-scale habitat selection models enhance our understanding of how species respond to their environments and contribute to the formulation of effective conservation and management strategies for ungulata.
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Arnold, Todd W., and Erik K. Fritzell. "Habitat use by male mink in relation to wetland characteristics and avian prey abundances." Canadian Journal of Zoology 68, no. 10 (October 1, 1990): 2205–8. http://dx.doi.org/10.1139/z90-306.

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We documented use of wetland habitats by five radio-marked male mink (Mustela vison) in the aspen parklands of southwestern Manitoba during May–July of 1984 and 1985. Mink activity was most frequent on large, well-flooded, semipermanent and permanent wetlands with irregular shorelines and large areas of open water. These variables were also positively correlated with abundances of waterfowl and other birds. Habitat variables explained 26% of the variation in wetland use by male mink. Grebes, coots, and diving ducks had high habitat overlap with mink, whereas dabbling ducks and blackbirds overlapped little with mink. Bird abundances explained nearly as much variation in habitat use by mink as did physical habitat variables (R2 = 0.24), but some of this association may have been due to selection for (or avoidance of) similar habitats. Combined analysis with habitat and avifaunal variables explained 31% of the variation in wetland use by male mink. Patterns of habitat use by mink and avian prey may help explain previously documented trends of prey selection among prairie mink.
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Dissertations / Theses on the topic "Habitat selection analysis"

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Olovsson, Anders. "Habitat selection by moose (Alces alces) in southwestern Sweden." Thesis, Karlstad University, Faculty of Social and Life Sciences, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-1033.

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The moose (Alces alces) is very important both economically and ecologically, therefore all knowledge of moose is vital for future management of the moose population. Little is known about moose habitat selection in Sweden. In coastal southwestern Sweden growing human population and new infrastructure projects continuously threaten to fragment and isolate local moose populations. The habitat selection of 22 moose, 8 males and 14 females, in southwestern Sweden was studied from February 2002 until December 2005. The moose were captured and fitted with GPS-collars and positions were collected at 2-hour intervals. The number of moose positions totaled 71103 during the study period of 46 months. Data for individual animals were divided into four seasons: spring, summer, fall and winter based on climate and moose biology. A total of 125 moose seasonal home ranges were generated and habitat use within each of the generated home ranges was studied using Euclidean distance-based analysis. A reclassified digital landcover map was divided into the land use classes agriculture, clear-cut, coniferous forest, deciduous forest, mire and mountain. The results showed that there was a difference in habitat selection between males and females. Males were significantly closer to forest and clear-cuts compared to females. Both males and females selected clear-cuts and avoided agriculture within their home ranges.


Älgen är en viktig art, både ekonomiskt och ekologiskt, och all kunskap är viktig för att även i framtiden kunna sköta en sund älgstam. Trots flertalet studier finns det många frågetecken om älgens habitatval i Sverige. En ökad exploateringstakt och nya infrastrukturprojekt hotar att fragmentera och isolera populationer av älg. Habitatvalet hos 22 älgar, 8 tjurar och 14 kor, i sydvästra Sverige studerades mellan februari 2002 och december 2005. Älgarna sövdes och utrustades med GPS-sändare, deras positioner registrerades varannan timma och det totala antalet positioner under den 46 månader långa studietiden var 71103 stycken. Data från varje älg delades in i 4 säsonger; vår, sommar, höst och vinter, baserat på klimat och älgens biologi. Totalt genererades 125 hemområden baserade på säsong, och valet av habitat inom varje hemområde studerades med hjälp av Euclidean distance-based analysis. En omklassificerad digital marktäckedata användes som var indelad i 6 olika klasser; odlad mark, hygge, barrskog, lövskog, myrmark och berg i dagen. Resultaten visade att det var skillnad mellan könen i hur de väljer habitat. Tjurarna var signifikant närmare barrskog och hyggen än korna, men både tjurar och kor selekterade för hyggen och undvek odlad mark inom deras hemområden.

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Gibson, Jennifer. "Habitat selection and calling activity of the Lewin's Rail (Lewinia pectoralis pectoralis)." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/109466/2/Jennifer_Gibson_Thesis.pdf.

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Combining wildlife conservation and urban development often can be problematic. Lewin's Rail is a near threatened, cryptic ground-dwelling bird that is found on land subject to development activity by the Brisbane Airport Corporation. This study quantified the habitat requirements of Lewin's Rail, and examined aspects of the regeneration of this habitat. By assessing the habitat requirements of Lewin's Rail, measures could be taken to facilitate the protection and integrity of remaining habitat, and also to minimise the impact of future disturbance upon the population on Brisbane airport land. The study also helps inform management of Lewin's Rail in other areas subject to human impact.
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Schmidt, Jason M. "Adaptive Foraging in a Generalist Predator: Implications of Habitat Structure, Density, Prey Availability and Nutrients." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1312815757.

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Johansson, Tomas. "Habitat selection, nest predation and conservation biology in a Black-tailed Godwit (Limosa limosa) population." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-4958-1/.

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Hawkins, Emily. "Demography, Movement Patterns, and Habitat Selection of Blanding's Turtles at Canadian Nuclear Laboratories in Chalk River, Ontario." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35563.

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The development and implementation of effective species and population-specific management strategies requires population-specific information. To demonstrate the relative extirpation risk associated with various road mortality scenarios for a population of Blanding’s turtles at Canadian Nuclear Laboratories in Chalk River, Ontario, a Population Viability Analysis was conducted. Road mortality of two adult females every ten years resulted in population extirpation within 200 years relative to a stable population not experiencing road mortality. To accommodate informed decision-making for the management of this species at risk, the movement patterns and habitat selection of this Blanding’s turtle population were described. There was no significant difference between males and females in distance moved between relocations in either the spring or the summer, but turtles moved greater distances in the spring than in the summer. Annual and seasonal home range size did not differ between the sexes or between spring and summer periods. A compositional analysis indicated Blanding’s turtles preferred marsh habitats over bog, swamp, lake, and upland. Matched-paired logistic regression was used to determine selection of microhabitat features, such as type of vegetation, in the spring and summer. Turtles preferred sites with warmer air temperatures, shallower water, a higher availability of open water, and greater coverage of emergent and floating vegetation types in the spring period. In the summer period, turtles preferred sites characterized by cooler, deeper water, a higher availability of open water, and greater coverage of emergent and floating vegetation types. This population of Blanding’s turtles appears to be relatively small and the continued threat of road mortality indicates a delicate situation for its persistence. Considering seasonally preferred habitats will best inform management decisions for seasonal work restrictions and future development plans.
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Harrison, Michelle Katherine. "The evolution of size-dependent habitat use in Cancer crabs, evidence from phylogenetics, natural selection analysis, and behavioural ecology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq24150.pdf.

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Craighead, Kimberly A. "A Multi-Scale Analysis of Jaguar (Panthera onca) and Puma (Puma concolor) Habitat Selection and Conservation in the Narrowest Section of Panama." Antioch University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=antioch1556731572403679.

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Keller, Cherie A. "Assessment of Resource Selection Using Remote Sensing and Geographic Information Systems (GIS) for Two Vertebrates in Disparate Habitats: the Gopher Tortoise (Gopherus Polyphemus) and the North Atlantic Right Whale (Eubalaena Glacialis)." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001279.

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Chupp, Adam Daniel. "Habitat Selection in Four Sympatric Small Mammal Species and the Effects of Potential Predators on Peromyscus Leucopus." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/657.

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I examined the effects of potential predators in relation to habitat selection in Peromyscus leucopus. I also examined habitat selection in three other sympatric species (Blarina brevicauda, Blarina carolinensis, Sorex longirostris). I utilized data fiom 49 sampling sites on National Park Service land; Petersburg National Battlefield Eastern Front Unit (15), Five-Forks Unit (17), Appomattox Court House National Historical Park (15) and Booker T. Washington National Monument (12). Sites were categorized by location (park unit) and habitat type (i.e. bottom-land hardwood), and the microhabitat within each sampling site was characterized by four variables (% cover of grasses, herbs, shrubs, and volume of downed wood). Importance values of tree species within each sampling site were also measured. Peromyscus leucopus, B. brevicauda, B. carolinensis, and S. longirostris were captured in all habitat types. Low capture rates for shrew species and high variability in the abundance of shrew species among all sampling sites were likely responsible for the lack of differences in abundance among habitats (p > 0.05). Peromyscus leucopus represented 76% of the captures among prey species and was the only species to demonstrate differences in relative abundance among habitat types. The relative abundance of P. leucopus was higher in bottom-land hardwood habitat when compared to pine forest plantation habitat (ANOVA, p P. leucopus among these habitat types may be explained by differences in understory structural diversity. Furthermore, the corresponding increase in the relative abundance of Procyon lotor (the most abundant predator during the study) in structurally heterogeneous habitat (bottom-land hardwood) suggests the importance of anti-predator behaviors within these habitat types. Ultimately, this may suggest that prey cannot escape the presence or calculate the abundance of predators and instead simply avoid dangerous habitats. Although the relative abundance of the most abundant predator (P. lotor) and prey (P. leucopus) species were positively associated within certain habitat types, a negative association between predator and prey species abundance was evident within parks. In the Eastern Front unit the relative abundance of prey (P. leucopus, S. longirostris) was lower in comparison to the Five-Forks unit while the abundance of P. lotor was higher (ANOVA, p P. lotor, Didelphis virginiana, and Urocyon cinereoargenteus were higher in the Eastern Front unit when compared to the Five-Forks unit. It appeared that the lethal effects of predators are evident at larger scales (within parks) despite the anti-predator behaviors of prey at smaller scales (within microhabitats). My results indicate that at larger scales (within parks) the lethal effects (removal of prey) of abundant predators may overwhelm the non-lethal effects (anti-predator behavior) exhibited by prey at smaller scales, especially in areas where structurally heterogenous habitats are lacking.
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Whitehead, Joanna K. "Breeding success of adult female kakapo (Strigops habroptilus) on Codfish Island (Whenua Hou) : correlations with foraging home ranges and habitat selection." Lincoln University, 2007. http://hdl.handle.net/10182/640.

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Kakapo (Strigops habroptilus) are a flightless, nocturnal parrot endemic to New Zealand. Thought to be extinct within their natural range, kakapo are currently listed as nationally critical. The current population of 86 individuals is managed by the Department of Conservation’s National Kakapo Team on two offshore islands in southern New Zealand, with all females of breeding age on Codfish Island (Whenua Hou). Kakapo only breed once every two to five years, coinciding with the mast fruiting of specific plant species. On Codfish Island, the proportion of adult female kakapo that breed in rimu (Dacrydium cupressinum) fruiting years is dependent on the quantity of fruit produced, with fewer females attempting to breed during low mast years. The purpose of this research is to investigate why only some adult female kakapo breed in low rimu fruiting years on Codfish Island, specifically assessing if foraging home range size and/or habitat selection influence breeding. A total of 506 location points were collected at night for 18 adult female kakapo between March and May 2006. These were used to estimate foraging home ranges and to assess if kakapo select for particular types of vegetation. Ecological Niche Factor Analysis was used to determine the relative importance of habitat variables in the distribution of female kakapo and to predict areas of suitable breeding habitat when rimu fruit is limited. The breeding success of individuals in 2005, a low rimu mast year, was used to identify if differences in home ranges or habitat selection occurred between breeding and non-breeding females. The large variation in foraging home range sizes recorded in this research was consistent with previous studies. Foraging home range sizes were on average twice the size for breeders than for non-breeders, suggesting that adult female kakapo may be limited in their ability to breed by the size of the area they occupy. Adult female kakapo did not randomly use vegetation on Codfish Island as some vegetation types were not used, while others were common inside foraging home ranges. Adult female kakapo utilise a broad niche and are capable of surviving in a wide range of habitats. However, breeding females were more specialised in their niche requirements than non-breeders, with breeders utilising areas with higher abundances of mature rimu trees. Females occurred in high elevation, flat areas of the island but this may have been because this is where appropriate vegetation types occurred. During low rimu mast years, breeding adult females were predicted to occupy habitat in high elevation, plateau areas with a high abundance of rimu. Areas identified as sub-optimal habitat for breeding included the coastal areas, the lower elevation area of the main valley and some ridgelines. The home ranges of all 10 breeding females contained some optimal habitat, while females who did not breed were more likely to be located in sub-optimal habitat. Although there were significant areas of optimal breeding habitat not occupied by adult female kakapo, other kakapo may have been present in these areas. To increase the proportion of females that breed in low rimu mast years, it may be necessary to remove sub-adult females or surplus adult males living in optimal breeding habitat from the island. Alternatively, females in sub-optimal breeding habitat could be fed supplementary foods or transferred to other islands where there is unoccupied suitable breeding habitat available.
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Books on the topic "Habitat selection analysis"

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Manly, Bryan F. J., 1944- and Manly, Bryan F. J., 1944-, eds. Resource selection by animals: Statistical design and analysis for field studies. 2nd ed. Dordrecht: Kluwer Academic Publishers, 2002.

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L, McDonald Lyman, and Thomas Dana L, eds. Resource selection by animals: Statistical design and analysis for field studies. London: Chapman & Hall, 1993.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site(s) : social analysis. [Toronto]: Ontario Waste Management Corporation, 1985.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site(s) : social analysis appendices. [Toronto]: Ontario Waste Management Corporation, 1985.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site(s) : economic base analysis. Toronto: Ontario Waste Management Corporation, 1985.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site(s) : municipal finance and services analysis. [Toronto]: Ontario Waste Management Corporation, 1985.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A : selection of a preferred site(s) : site selection. Toronto: M.M. Dillon, 1986.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site(s) : transportation. [Toronto, Ont.]: Ontario Waste Management Corporation, 1985.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site : land use. [Toronto]: Ontario Waste Management Corporation, 1985.

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Corporation, Ontario Waste Management. Site selection process: Phase 4A: selection of a preferred site(s) : atmospheric considerations. [Toronto]: Ontario Waste Management Corporation, 1985.

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Book chapters on the topic "Habitat selection analysis"

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Barker, J. S. F. "Experimental Analysis of Habitat Selection and Maintenance of Genetic Variation." In Ecological and Evolutionary Genetics of Drosophila, 161–75. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-8768-8_12.

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Hedrick, Philip W. "Theoretical Analysis of Habitat Selection and the Maintenance of Genetic Variation." In Ecological and Evolutionary Genetics of Drosophila, 209–27. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4684-8768-8_15.

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Lofdahl, Katherine L. "A Genetic Analysis of Habitat Selection in the Cactophilic Species, Drosophila mojavensis." In Evolutionary Genetics of Invertebrate Behavior, 153–62. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-3487-1_15.

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Sharma, Shivam, and Ashok Kumar Sinha. "A Game-Theoretic Model of Deceptive Ambush as Counter Measure for Habitat Selection in Cross-Border Infiltration." In Asset Analytics, 107–25. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3643-4_8.

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Hostetler, Mark. "The importance of multi-scale analyses in avian habitat selection studies in urban environments." In Avian Ecology and Conservation in an Urbanizing World, 139–54. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1531-9_7.

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Drew, Richard A. I., and Meredith C. Romig. "Species and speciation." In The fruit fly fauna (Diptera: Tephritideae: Dacinae) of Papua New Guinea, Indonesian Papua, Associated Islands and Bougainville, 7–8. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789249514.0004.

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Abstract This chapter discusses two species models, which are diametrically opposed. The first, often called the 'biological species concept', defines species in terms of 'reproductive isolation', convinced that species arise when subsets of a population are split off and remain geographically isolated over evolutionary time. If and when such new species are reunited with their founder population, interbreeding does not occur, or if it does, infertile progeny result. Hence, from the biological species concept, natural selection is a primary agent of change and directly selects for new species. In this sense, species are the direct products of natural selection and they are therefore 'adaptive devices'. When applying this species concept, it has been impossible to separate some sibling species of fruit flies in the genus Bactrocera where distinct morphological species can be similar in molecular analyses of certain DNA sequences, while similar species morphologically are distinct in the same molecular characters. A radically different model, the 'recognition concept of species', relies heavily on a knowledge of species ecology and behaviour, particularly in their natural habitat. The principal points in this concept are given. In contrast to the now-outdated biological species concept that leads one to depend on laboratory-based research to define species, the recognition concept requires workers to undertake extensive field research in the habitat of the taxon under investigation. In translating this approach to research in the insect family Tephritidae, particularly the Dacinae, some 35 years of field surveys have been undertaken throughout the Indian subcontinent, South-east Asia and the South Pacific region. These surveys included trapping using male lure traps and host fruit collections of commercial/edible fruits. The results of this work have included the provision of specimens of almost all known species for morphological descriptions (c.800 species), material for male pheromone chemistry, and data on host fruit relationships and biogeographical studies.
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Catalano, Chiara, Salvatore Pasta, and Riccardo Guarino. "A Plant Sociological Procedure for the Ecological Design and Enhancement of Urban Green Infrastructure." In Future City, 31–60. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75929-2_3.

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AbstractUrban green infrastructure could represent an important mean for environmental mitigation, if designed according to the principles of restoration ecology. Moreover, if suitably executed, managed and sized, they may be assimilated to meta-populations of natural habitats, deserving to be included in the biodiversity monitoring networks. In this chapter, we combined automatised and expert opinion-based procedures in order to select the vascular plant assemblages to populate different microhabitats (differing in terms of light and moisture) co-occurring on an existing green roof in Zurich (Switzerland). Our results lead to identify three main plant species groups, which prove to be the most suitable for the target roof. These guilds belong to mesoxeric perennial grasslands (Festuco-Brometea), nitrophilous ephemeral communities (Stellarietea mediae) and drought-tolerant pioneer species linked to nutrient-poor soils (Koelerio-Corynephoretea). Some ruderal and stress-tolerant species referred to the class Artemisietea vulgaris appear to fit well with local roof characteristics, too. Inspired by plant sociology, this method also considers conservation issues, analysing whether the plants selected through our procedure were characteristic of habitats of conservation interest according to Swiss and European laws and directives. Selecting plant species with different life cycles and life traits may lead to higher plant species richness, which in turn may improve the functional complexity and the ecosystem services provided by green roofs and green infrastructure in general.
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Casagrande, Gaia. "Visible and Invisible Traces: Managing the Self on Social Media Platforms." In Frontiers in Sociology and Social Research, 141–56. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11756-5_9.

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AbstractThis chapter explores the traces that we voluntarily leave behind on social media platforms, dictated by the selection of what we want to show and what we want to hide and how this affects the perception of ourselves.Nowadays, digital platforms have a huge impact on our lives, in re-shaping both our habits and our personal attitudes. Particularly on social media, both tangible and intangible aspects of our lives can be datafied, which in turn affect and shape our feelings and experiences.In order to explore this dynamic, I interviewed a selected target group of young media professionals who are used to promoting themselves and their work on social media, through the so-called practice of self-branding.From the qualitative analysis of 20 in-depth interviews, this chapter investigates traces derived from implicit self-branding practices, which can take the form of controlling what is not to be shared, measuring the online reactions, and hiding relevant information. All these non-activities are also strategic in building and managing the users’ online branded personas.Thus, through the management of the visible and invisible traces on social media profiles, users convey a branded and polished version of themselves.
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Veech, Joseph A. "Goals of Characterizing a Species Habitat." In Habitat Ecology and Analysis, 73–80. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198829287.003.0004.

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There are several reasons for conducting a habitat analysis and identifying the environmental (habitat) characteristics that a species associates with. (1) Knowledge of a species’ habitat requirements is crucial in restoring and managing habitat for the species. (2) Carrying capacity informs us about the potential (or lack thereof) for future population growth based on resource availability. Knowledge of a species’ habitat requirements allows us to interpret the importance of carrying capacity in a habitat-specific way. (3) The study of species interactions and the potential for species coexistence is supported by having knowledge of the habitat of each species under investigation. (4) Habitat preference and selection as eco-evolutionary processes continue to be widely studied by ecologists—interpretation of the results of such studies is best done with knowledge of the species–habitat associations. Such knowledge can also be useful in the design of preference and selection studies. (5) Knowledge of species–habitat associations can also be of great use in selecting the environmental variables to use in species distribution models. All five of these goals point to the great utility of conducting a habitat analysis as a supporting investigation or as a way to obtain knowledge to put to a practical purpose.
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Veech, Joseph A. "The Primacy of Habitat." In Habitat Ecology and Analysis, 39–72. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198829287.003.0003.

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Habitat may have a primary role in determining the distribution and abundance of species, yet ecologists have historically overlooked its importance. Models of habitat selection are briefly reviewed. A new conceptual and analytical model is presented that explains how dispersing organisms find and settle at a given location based upon habitat structural features providing cues for settlement. The model is based on a sequential process of dispersal, settlement, and establishment that can be described by probabilities. The spatial settlement pattern of juvenile individuals determines adult distribution and abundance. Evidence is provided that structural features of the habitat may be more effective cues than are food supply, conspecific density, or the absence of an antagonistic species. This is the habitat-cue hypothesis of species distribution and abundance. The hypothesis is intended to stimulate greater investigation into the role of physical structure and environmental cueing in habitat selection by all types of organism. The hypothesis also predicts that a species distribution in nature is determined by habitat more than any other factor.
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Conference papers on the topic "Habitat selection analysis"

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Taher, Taherah Mohd, Tukimat Lihan, Muzzneena Ahmad Mustapha, and Shukor Mohd Nor. "Habitat selection of Tragulus napu and Tragulus javanicus using MaxEnt analysis." In THE 2017 UKM FST POSTGRADUATE COLLOQUIUM: Proceedings of the University Kebangsaan Malaysia, Faculty of Science and Technology 2017 Postgraduate Colloquium. Author(s), 2018. http://dx.doi.org/10.1063/1.5027973.

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A.V., Shokurova, Anishchenko O. V., Kashinskaya E.N., and Solovyev M.M. "THE ELEMENTAL COMPOSITION OF BILE OF SOME MARINE AND FRESHWATER FISH SPECIES AND ITS POSSIBLE PRACTICAL APPLICATION IN AQUACULTURE." In II INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE "DEVELOPMENT AND MODERN PROBLEMS OF AQUACULTURE" ("AQUACULTURE 2022" CONFERENCE). DSTU-Print, 2022. http://dx.doi.org/10.23947/aquaculture.2022.29-31.

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The elemental composition of the bile of 429 fish individuals of 21 species of freshwater and marine fish has studied. Macroelements (Ca, K, Mg, Na, P, S), regardless of the diets and habitat of fish, were in the highest concentrations if compare to other elements. However, it is possible to note some differences in the concentrations of such macronutrients as K and Na between marine and freshwater species. Cu, Li and Sr were found in the bile of all studied freshwater species, while bile form marine species has always contained elements such as As, Cu, Li, Se and Sr. At the same time, Bi, Cd, Mo and Tl were absent in most species of both freshwater and marine fishes. Statistical analysis has revealed that such factors as “feeding habits”, “habit”, “season” and “year" had a significant effect on the elemental composition of fish bile. The obtained data of the elemental composition of bile are applicable to the creation of selective artificial nutrient media and species-specific feeds.
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Al-Ani, Ibrahim, Hayder Al-Thamery, and Wan Mohtar,. "Multi Criteria Decision Making to Optimize the Best Runoff Control Measure Contributing to Haditha Dam Reservoir." In INTERNATIONAL CONFERENCE ON ARCHITECTURAL AND CIVIL ENGINEERING 2020. Cihan University-Erbil, 2021. http://dx.doi.org/10.24086/aces2020/paper.217.

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In Iraq, the two dominating surface water sources are Tigris and Euphrates Rivers in which some dams constructed on both of them forming reservoirs. Haditha Dam reservoir is one of the most essential sources of drinking, irrigation, flood control and hydropower generation in Anbar State, Western Part of Iraq. Besides, the reservoir is a unique habitat with a wide spectrum of biodiversity. The objective of this study is to investigate and monitor the water quality in Haditha Dam reservoir and introduce the Multi Criteria Analysis (MCA) to highlight the best runoff control measure depending on selected criteria and criteria weights. Experts were interviewed for the selection of criteria and for the assignment of the weight factor and scores. Four criteria from three categories such as technical, economic and environmental aspects were selected. Results from this study indicated that a distinguished difference in TSS and Turbidity between the dry and wet seasons and necessitates the installation of runoff control measures. It was found that the soil binders, sediment basin and diversion channel are the best alternatives for controlling erosion, sediment and drainage respectively. The sensitivity analysis showed very strong decision made by the experts for the technical, economic and environmental criteria.
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Ushivtsev, Vladimir, Maya Galaktionova, Sergey Kotenkov, and Tatyana Sinitsyna. "The state of crayfish (Astacidae) populations in a certain area of the Caspian Sea Eastern coast in 2022." In "The Caspian in the Digital Age" within the framework of the International Scientific Forum "Caspian 2021: Ways of Sustainable Development". Dela Press Publishing House, 2022. http://dx.doi.org/10.56199/dpcsebm.iqxy7256.

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The aim is to study crayfish (Astacidae) distribution, fertility and stocks in coastal waters on the Caspian Sea Eastern shelf in the area between cape Rakushechny and cape Tokmak. The research was carried out in summer 2022. The material was collected by shallow-water divers using the method of crayfish route census and selection at the transects with an area of 100-200 m2. Collected samples were speciated, measured, weighed and evaluated from fertility viewpoint. Population was estimated on the basis of crayfish clusters density en routes (ind./m2) with further reestimation within biotopes that were identified using the data of the Caspian Sea satellite monitoring and were specified with the help of a drone. The stocks were estimated on the basis of the collected animals’ length and weight characteristics. Two Astacidae species inhabit the area: Pontastacus eichwald Воtt – long-clawed crayfish, and Caspiastacus pachypus Rathke – thick-clawed crayfish. Comparative analysis of the current results and the data from the 1970s to 1990s has identified that the situation had changed. C. Рachypus habitat has expanded. Both Astacidae species working fertility has decreased. Crayfish stocks in the researched sector have commercial value. Using data from satellite survey and drone observation increase the research objectivity significantly.
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Salas, Dan, and Aaron Steber. "Restored Crossings: When and Where to Apply Stream Restoration Techniques to Protect Exposed Pipelines." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64467.

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Maintenance of existing rights-of-way often involve dealing with exposed pipelines near stream crossings. Streams often shift over time. This adjustment can lead to erosion of the streambed and streambanks, exposing pipelines or other infrastructure to threats such as hydraulic pressure, buoyancy, debris collisions, or pipe vibration and fatigue. Under these conditions, managers can be faced with relocating the pipe, performing localized streambank stabilization, or employing stream restoration techniques to provide long-term protection. When localized stabilization is the preferred approach, selection of techniques is often determined by what will protect the pipeline without consideration of the stream context surrounding it. However, due to site conditions, manager preferences, and regulatory considerations, techniques from the disciplines of stream restoration and habitat enhancement can provide cost-effective alternatives to traditional hard-armoring by concrete or stone depending on the site context. Using past experience and a series of decision analysis tools, it was determined that geomorphic context should be factored as a foremost consideration when evaluating the most stable and cost effective approach to correcting exposed pipelines. One of the most critical factors in assessing the feasibility of stabilization options is the height and orientation of exposed pipes relative to the stream’s bankfull elevation.
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Xiao, Dengyi, Guangcheng Hu, Qunli Qi, Min Zhao, Hanzhou Fan, Li Wang, Xin Chen, et al. "Reservoir Characteristics and Integrated Method to Illustrate Mishrif Stratigraphic Prospect in Western UAE." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211646-ms.

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Abstract As a unique stratigraphic prospect of UAE, the carbonate Mishrif Formation in NN Field is composed of 15-25 m thick rudist grainstone that formed in a shoal environment. The effective reservoir is bounded by inter-shoal packstone-wackestone. Combination of porous reservoir and non-porous baffles indicate high heterogeneity caused by rapid changes in deposition. Current exploration and drilling proposal are precluded due to the ambiguous understanding on reservoir anisotropy and dim-identification from seismic due to the thin reservoir thickness. To mitigate the challenge from reservoir identification, Mishrif whole core was collected and the following analysis performed: thin section description, porosity and permeability (RCA), X-Ray diffraction (XRD), and mercury injection (MICP). The subsurface analysis of the Mishrif reservoir was augmented with litho-facies identification, sedimentary facies recognition, and diagenetic history. Paleogeography was integrated with sequence stratigraphy to predict possible reservoir distribution. Sequence stratigraphy focused on identifying the 4th order sequence interfaces such as first flooding surface (FFS), maximum flooding surface (MFS), and sequence boundaries (SQ). Subsequently, the paleogeomorphology of oil-bearing zone was conducted, and a method using two crucial sequence surfaces was optimized after comparing impression and residual thickness methods. Meanwhile, to quantitatively characterize this set of oil-bearing units, AVO and Pre-stack inversion was implemented to predict reservoir distribution and fluid habitat. The integrated study revealed that the Mishrif reservoir quality is controlled by original depositional facies and diagenetic processes. The rudist grainstone was shoal-related with deposition on a paleo-geographic high and originally high porosity and excellent pore-connectivity. The subsequent fresh water leaching and dissolution contributed to improvement of pore structure. In contrast, the inter-shoal limestone contains higher micrite deposited in slightly deeper water, due to lower porosity it resisted the weathering procedure. To overcome the challenge of thin reservoir thickness, selection of key surfaces which are used to construct the paleo-geographic configuration would be quite crucial. And the identification of such surfaces only from seismic would be of high uncertainty. Finally, the dual-interface method was adopted to delineate the paleogeomorphology of oil-bearing zone. This illustration of paleogeography displayed high similarity to the reservoir quantitatively derived from AVO and Pre-stack inversion, which improved reservoir prediction. This integrated method from core-based reservoir recognition, sequence-driven paleogeography, as well as quantitative AVO and Pre-stack inversion provides new insight to study heterogeneous carbonates and reduce uncertainty for thin reservoir prediction.
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Almeida, Beatriz, Carlos Albuquerque, Madalena Cunha, and Anabela Antunes. "SLEEP QUALITY AND SLEEP HABITS IN STUDENTS." In International Conference on Education and New Developments. inScience Press, 2021. http://dx.doi.org/10.36315/2021end102.

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Introduction: The student stage is marked by many changes that will affect different aspects of young youth life, including changes in sleep patterns. Sleep is known to play an active role in the overall development of students, mainly because of its restorative functions and an insufficient number of hours of sleep can be associated with consequences on physical and mental health. Objectives: To analyze the factors that interfere with higher education students’ sleep quality. Methods: A systematic review of the literature was carried out drawing on a selection of articles published between 2012 and 2020, following the method proposed by the Joanna Briggs Institute and according to the Preferred reporting items for systematic reviews and meta-analyzes (PRISMA). This selection was carried out using PubMed, B-On and SCIELO search engines. The review was based on 5 articles whose methodological quality was found to be undeniable. Results: Results show that, on the whole, students suffer from a poor quality of sleep. This situation is commonly associated with factors such as being a higher education student worker, shift work, or caffeine, alcohol, and tobacco use, among others. Conclusions: In view of the outcomes, it became clear that higher education students need to be made more aware of the importance of sleep habits and daytime sleepiness, and to improve their health literacy. They need to be informed and trained in these areas so they may reduce or at least prevent certain risk behaviours that increasingly threaten their sleep quality and overall health.
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Stefanov, Zdravko, Antonio Antonov, Dimitar Zagorski, Galina Rusimova, Ivan Ivanov, and Ognyan Tishinov. "AN EXPLORATIVE STUDY OF THE DEPENDABILITY OF THE EXECUTION ON ROUTINE SCORING GOAL IN FIELD HOCKEY." In INTERNATIONAL SCIENTIFIC CONGRESS “APPLIED SPORTS SCIENCES”. Scientific Publishing House NSA Press, 2022. http://dx.doi.org/10.37393/icass2022/33.

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ABSTRACT Biomechanical analyzes of field hockey players have been developed. The analysis was made for shooting in the door by video recording from two high-speed video cameras. For each of the blows with the stick, kinematic analyzes were made both from a point of view in a direction perpendicular to the plane of the blow on the ball, and from a rear point of view relative to the athlete. The aim of the development is to establish significant statistical regularities accompanying the repeatability of the stability of the motor habit in the effective execution of the blows on the ball in the hockey goal. Methods The scale of the shooting covers the athlete in general shooting. 8 control markers placed on the front of the stick, the right wrist, the right elbow, the right shoulder, the right and left knees, the right and left feet were used in the video recording from the lateral point of view. The same model for marking control markers is used when shooting the athlete from a rear view. The criterion for the selection of the studied points is to be visible when shooting. Additional lighting is used to increase the contrast required for automated kinematic analysis. Results and analysis Statistical analyzes of the shocks during the shooting were made, including the limit values of the linear velocities of the examined points by the athlete’s body during the execution of the shot in the door. The statistical processing includes variation, correlation, regression and anatomical analyses establishing the stability of the motor habit when performing the stroke by different athletes from the national hockey team. Statistically significant correlation and regression models were established connecting the instantaneous velocity of the blow with the stick on the hockey ball and the instantaneous values of the examined points of the athlete’s body.
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Mori, Keika, Takuya Watanabe, Yunao Zhou, Ayako Akiyama Hasegawa, Mitsuaki Akiyama, and Tatsuya Mori. "Comparative Analysis of Three Language Spheres: Are Linguistic and Cultural Differences Reflected in Password Selection Habits?" In 2019 IEEE European Symposium on Security and Privacy Workshops (EuroS&PW). IEEE, 2019. http://dx.doi.org/10.1109/eurospw.2019.00025.

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Tronskar, Jens P., and Chon Gee Lee. "Cofferdam and Hyperbaric “Live” Repair of Gas Pipeline Leaks." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-55077.

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Offshore pipelines may face many threats. Apart from internal and external corrosion third party threats represent major hazards to submarine pipelines. Recent pipeline leaks caused by third party as well as construction and installation have been repaired online in a two-step process involving installation of a leak clamp followed by a permanent repair by installation of a welded stand-off sleeve. The welding has depending on the water depth been executed in a hyperbaric habitat or in shallow water using purpose built cofferdams. A concept proposed by DNV GL has been successfully applied to repair of leaking submarine pipelines. To ensure the safety of the repair crew the concepts involves using a gas containment barrier installed over a traditional mechanical leak clamp. The gas containment barrier is either purged with inert gas or nitrogen or it is maintained with a constant inert gas pressure that is monitored continuously during the repair. In the event of a sudden gas leak into the gas containment barrier a pre-set pressure relief valve will open and dump the gas leak outside the habitat. This paper describes the details of a few cases of leaking submarine gas pipelines and the immediate causes of the leak, the repair method selection, the repair method details, cofferdam or hyperbaric welding qualification and execution. The paper also describes the various steps in the process to ensure that the pipeline damage is stable and that the repairs can be safely undertaken to restore the pipelines to their original design condition without reduction of pressure or flow rate. The paper describes the method of global and local finite element analyses as well as fracture mechanics assessment by FEA to assess the stability of the flaws causing the gas leaks. The pipelines in question have all been gas transmission lines carrying gas to gas fired power plants for which gas pressure reduction or shutdown were completely unacceptable. Future development is expected to involve development of remotely controlled repairs using similar concepts at water depths where diver/welders cannot be employed due to the various country regulations or simply because the water depths are too deep for saturation divers. Methodology according to DNV RP-A203 [1] is described for qualification of new technology for underwater pipeline repairs. Further references are made to the recent updates to the DNV RP-F113 Pipeline Subsea Repair [2] with regards to requirements for “live” pipeline repairs. The DNV RP-F113 refers to the PRCI Weld Thermal analyses [3] and requirements to perform full scale mock-up tests of the repair as part of the repair method qualification based on DNV OS-F101 Submarine Pipelines [4].
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Reports on the topic "Habitat selection analysis"

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OSIYANOVA, O. M., and V. I. SELEZNEVA. AUTHENTIC VIDEOS IN MODERN FOREIGN LANGUAGE EDUCATION: LINGUODIDACTIC ASPECT. Science and Innovation Center Publishing House, April 2022. http://dx.doi.org/10.12731/2658-4034-2022-13-1-2-95-104.

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The article considers the relevance of the authentic videos use in students foreign language education, determines their linguistic and didactic potential in the development of habits and skills in a foreign language speech activity. The subject of the analysis is the selection criteria and the content of work stages with authentic videos in English classes.
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Abbo, Shahal, Hongbin Zhang, Clarice Coyne, Amir Sherman, Dan Shtienberg, and George J. Vandemark. Winter chickpea; towards a new winter pulse for the semiarid Pacific Northwest and wider adaptation in the Mediterranean basin. United States Department of Agriculture, January 2011. http://dx.doi.org/10.32747/2011.7597909.bard.

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Original objectives: [a] Screen an array of chickpea and wild annual Cicer germplasm for winter survival. [b] Genetic analysis of winter hardiness in domesticated x wild chickpea crosses. [c] Genetic analysis of vernalization response in domesticated x wild chickpea crosses. [d] Digital expression analysis of a core selection of breeding and germplasm lines of chickpea that differ in winter hardiness and vernalization. [e] Identification of the genes involved in the chickpea winter hardiness and vernalization and construction of gene network controlling these traits. [f] Assessing the phenotypic and genetic correlations between winter hardiness, vernalization response and Ascochyta blight response in chickpea. The complexity of the vernalization response and the inefficiency of our selection experiments (below) required quitting the work on ascochyta response in the framework of this project. Background to the subject: Since its introduction to the Palouse region of WA and Idaho, and the northern Great Plains, chickpea has been a spring rotation legume due to lack of winter hardiness. The short growing season of spring chickpea limits its grain yield and leaves relatively little stubble residue for combating soil erosion. In Israel, chilling temperatures limit pod setting in early springs and narrow the effective reproductive time window of the crop. Winter hardiness and vernalization response of chickpea alleles were lost due to a series of evolutionary bottlenecks; however, such alleles are prevalent in its wild progenitor’s genepool. Major conclusions, solutions, achievements: It appears that both vernalization response and winter hardiness are polygenic traits in the wild-domesticated chickpea genepool. The main conclusion from the fieldwork in Israel is that selection of domesticated winter hardy and vernalization responsive types should be conducted in late flowering and late maturity backgrounds to minimize interference by daylength and temperature response alleles (see our Plant Breeding paper on the subject). The main conclusion from the US winter-hardiness studies is that excellent lines have been identified for germplasm release and continued genetic study. Several of the lines have good seed size and growth habit that will be useful for introgressing winter-hardiness into current chickpea cultivars to develop releases for autumn sowing. We sequenced the transcriptomes and profiled the expression of genes in 87 samples. Differential expression analysis identified a total of 2,452 differentially expressed genes (DEGs) between vernalized plants and control plants, of which 287 were shared between two or more Cicer species studied. We cloned 498 genes controlling vernalization, named CVRN genes. Each of the CVRN genes contributes to flowering date advance (FDA) by 3.85% - 10.71%, but 413 (83%) other genes had negative effects on FDA, while only 83 (17%) had positive effects on FDA, when the plant is exposed to cold temperature. The cloned CVRN genes provide new toolkits and knowledge to develop chickpea cultivars that are suitable for autumn-sowing. Scientific & agricultural implications: Unlike the winter cereals (barley, wheat) or pea, in which a single allelic change may induce a switch from winter to spring habit, we were unable to find any evidence for such major gene action in chickpea. In agricultural terms this means that an alternative strategy must be employed in order to isolate late flowering – ascochyta resistant (winter types) domesticated forms to enable autumn sowing of chickpea in the US Great Plains. An environment was identified in U.S. (eastern Washington) where autumn-sown chickpea production is possible using the levels of winter-hardiness discovered once backcrossed into advanced cultivated material with acceptable agronomic traits. The cloned CVRN genes and identified gene networks significantly advance our understanding of molecular mechanisms underlying plant vernalization in general, and chickpea in particular, and provide a new toolkit for switching chickpea from a spring-sowing to autumn-sowing crop.
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Goetsch, Arthur L., Yoav Aharoni, Arieh Brosh, Ryszard (Richard) Puchala, Terry A. Gipson, Zalman Henkin, Eugene D. Ungar, and Amit Dolev. Energy Expenditure for Activity in Free Ranging Ruminants: A Nutritional Frontier. United States Department of Agriculture, June 2009. http://dx.doi.org/10.32747/2009.7696529.bard.

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Heat production (HP) or energy expenditure for activity (EEa) is of fundamental nutritional importance for livestock because it determines the proportion of ingested nutrients available for productive functions. Previous estimates of EEa are unreliable and vary widely with different indirect methodologies. This leads to erroneous nutritional strategies, especially when intake on pasture does not meet nutritional requirements and supplementation is necessary for acceptable production. Therefore, the objective of this project was to measure EEa in different classes of livestock (beef cattle and goats) over a wide range of ecological and management conditions to develop and evaluate simple means of prediction. In the first study in Israel, small frame (SF) and large frame (LF) cows (268 and 581 kg) were monitored during spring, summer, and autumn. Feed intake by SF cows per unit of metabolic weight was greater (P < 0.001) than that by LF cows in both spring and summer and their apparent selection of higher quality herbage in spring was greater (P < 0.10) than that of LF cows. SF cows grazed more hours per day and walked longer distances than the LF cows during all seasons. The coefficient of specific costs of activities (kJ•kg BW-0.75•d-1) and of locomotion (J•kg BW-0.75•m-1) were smaller for the SF cows. In the second study, cows were monitored in March, May, and September when they grazed relatively large plots, 135 and 78 ha. Energy cost coefficients of standing, grazing, and horizontal locomotion derived were similar to those of the previous study based on data from smaller plots. However, the energy costs of walking idle and of vertical locomotion were greater than those found by Brosh et al. (2006) but similar to those found by Aharoni et al. (2009). In the third study, cows were monitored in February and May in a 78-ha plot with an average slope of 15.5°, whereas average plot slopes of the former studies ranged between 4.3 and 6.9°. Energy cost coefficients of standing, grazing, and walking idle were greater than those calculated in the previous studies. However, the estimated energy costs of locomotion were lower in the steeper plot. A comparison on a similar HP basis, i.e., similar metabolizable energy (ME) intake, shows that the daily energy spent on activities in relation to daily HP increased by 27% as the average plot slope increased from 5.8 and 6.02 to 15.5°. In the fourth study, cows grazing in a woodland habitat were monitored as in previous studies in December, March, and July. Data analysis is in progress. In the first US experiment, Boer and Spanish does with two kids were used in an experiment beginning in late spring at an average of 24 days after kidding. Two does of each breed resided in eight 0.5-ha grass/forb pastures. Periods of 56, 60, 63, 64, and 73 days in length corresponded to mid-lactation, early post-weaning, the late dry period, early gestation, and mid-gestation. EEa expressed as a percentage of the ME requirement for maintenance plus activity in confinement (EEa%) was not influenced by stocking rate, breed, or period, averaging 49%. Behavioral activities (e.g., time spent grazing, walking, and idle, distance traveled) were not highly related to EEa%, although no-intercept regressions against time spent grazing/eating and grazing/eating plus walking indicated an increase in EEa% of 5.8 and 5.1%/h, respectively. In the second study, animal types were yearling Angora doeling goats, yearling Boer wether goats, yearling Spanish wether goats, and Rambouilletwether sheep slightly more than 2 yr of age. Two animals of each type were randomly allocated to one of four pastures 9.3, 12.3, 4.6, and 1.2 ha in area. The experiment was conducted in the summer with three periods, 30, 26, and 26 days in length. EEa% was affected by an interaction between animal type and period (Angora: 16, 17, and 15; Boer: 60, 67, and 34; Spanish: 46, 62, and 42; sheep: 22, 12, and 22% in periods 1, 2, and 3, respectively (SE = 6.1)). EEa% of goats was predicted with moderate accuracy (R2 = 0.40-0.41) and without bias from estimates of 5.8 and 5.1%/h spent grazing/eating and grazing/eating plus walking, respectively, determined in the first experiment; however, these methods were not suitable for sheep. These methods of prediction are simpler and more accurate than currently recommended for goats by the National Research Council.
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