Relevant bibliographies by topics / Patch-size

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Patch-size'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 June 2025

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Journal articles on the topic "Patch-size"

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Meyer, Katrin M., Kerstin Wiegand, David Ward, and Aristides Moustakas. "Determining patch size." African Journal of Ecology 46, no. 3 (2008): 440–42. http://dx.doi.org/10.1111/j.1365-2028.2007.00834.x.

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Houston, Alasdair I., and John M. McNamara. "Patch choice and population size." Evolutionary Ecology 11, no. 6 (1997): 703–22. http://dx.doi.org/10.1023/a:1018486318976.

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Bohenek, Jason R., Matthew R. Pintar, Tyler M. Breech, and William J. Resetarits. "Patch size influences perceived patch quality for colonising Culex mosquitoes." Freshwater Biology 62, no. 9 (2017): 1614–22. http://dx.doi.org/10.1111/fwb.12972.

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Hashiguchi, Takehito, Mikihito Hirohata, and Károly Jármai. "An Investigation on the Features of Deformation and Residual Stress Generated by Patch Welding with Different Plate Sizes." Processes 10, no. 7 (2022): 1312. http://dx.doi.org/10.3390/pr10071312.

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Welding is widely used to manufacture and repair steel structures such as piping and pressure vessels. Welding induces deformation and residual stress, which influences the mechanical performance of the structural members. Noting patch welding, which is applied to repair steel structures, a series of patch welding experiments and numerical analyses were carried out. The features of out-of-plane deformation and residual stress by patch welding were examined by changing the patch size. The out-of-plane deformation showed different modes in the patch joints. The magnitude of the out-of-plane deformation depended on the patch size. The tensile residual stress at the weld toe increased with the enlargement of the patch size. The costs for the different sizes of patch welding were estimated for choosing the patch size reasonably. The patch size should be determined by considering the mechanical influences of welding and the economic viewpoints of the welding process.
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Xiaobing, Dai, and Eddy Maarel. "Transect-based patch size frequency analysis." Journal of Vegetation Science 8, no. 6 (1997): 865–72. http://dx.doi.org/10.2307/3237031.

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Partamies, Noora, Karl Bolmgren, Erkka Heino, Nickolay Ivchenko, Joseph E. Borovsky, and Hanna Sundberg. "Patch Size Evolution During Pulsating Aurora." Journal of Geophysical Research: Space Physics 124, no. 6 (2019): 4725–38. http://dx.doi.org/10.1029/2018ja026423.

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Bahr, David B., and Mark F. Meier. "Snow patch and glacier size distributions." Water Resources Research 36, no. 2 (2000): 495–501. http://dx.doi.org/10.1029/1999wr900319.

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Schmidt, Kenneth A., and Joel S. Brown. "Patch Assessment in Fox Squirrels: The Role of Resource Density, Patch Size, and Patch Boundaries." American Naturalist 147, no. 3 (1996): 360–80. http://dx.doi.org/10.1086/285856.

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Quintana, Gonzalo Iñaki, Zhijin Li, Laurence Vancamberg, Mathilde Mougeot, Agnès Desolneux, and Serge Muller. "Exploiting Patch Sizes and Resolutions for Multi-Scale Deep Learning in Mammogram Image Classification." Bioengineering 10, no. 5 (2023): 534. http://dx.doi.org/10.3390/bioengineering10050534.

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Recent progress in deep learning (DL) has revived the interest on DL-based computer aided detection or diagnosis (CAD) systems for breast cancer screening. Patch-based approaches are one of the main state-of-the-art techniques for 2D mammogram image classification, but they are intrinsically limited by the choice of patch size, as there is no unique patch size that is adapted to all lesion sizes. In addition, the impact of input image resolution on performance is not yet fully understood. In this work, we study the impact of patch size and image resolution on the classifier performance for 2D mammograms. To leverage the advantages of different patch sizes and resolutions, a multi patch-size classifier and a multi-resolution classifier are proposed. These new architectures perform multi-scale classification by combining different patch sizes and input image resolutions. The AUC is increased by 3% on the public CBIS-DDSM dataset and by 5% on an internal dataset. Compared with a baseline single patch size and the single resolution classifier, our multu-scale classifier reaches an AUC of 0.809 and 0.722 in each dataset.
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Hahn, Steffen, Hans-Ulrich Peter, and Silke Bauer. "Skuas at penguin carcass: patch use and state-dependent leaving decisions in a top-predator." Proceedings of the Royal Society B: Biological Sciences 272, no. 1571 (2005): 1449–54. http://dx.doi.org/10.1098/rspb.2005.3106.

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Foraging decisions depend not only on simple maximization of energy intake but also on parallel fitness-relevant activities that change the forager's ‘state’. We characterized patch use and patch leaving rules of a top-predatory seabird, the Brown Skua ( Catharacta antarctica lonnbergi ), which during its reproductive period in the Antarctic establishes feeding territories in penguin colonies. In feeding trials, we observed how skuas foraged at penguin carcass patches and analysed patch leaving decisions by incorporating the estimated state of foraging birds and patch availability. Patches were exploited in a characteristic temporal pattern with exponentially decreasing remaining patch sizes (RPSs) and intake rates. Patch size decreased particularly fast in small compared to large patches and exploitation ended at a mean RPS of 47.6% irrespective of initial size. We failed to identify a measure which those birds equalized upon patch departure from raw data. However, when accounting for the birds' state, we ascertained remaining patch size and intake rates to have the lowest variance at departure whereas food amount and feeding time remained variable. Statistical correction for territory size only and combined with state had lower effects, but remaining patch size remained the measure with lowest coefficient of variation. Thus, we could clearly reject a fixed-time or fixed-amount strategy for territorial skuas and rather suggest a state-dependent strategy that equalizes remaining patch size. Thus our results provide evidence that under natural conditions, territorial skuas adjust their foraging decision on actual energy requirements, i.e. offspring number and age.
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Dissertations / Theses on the topic "Patch-size"

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DiBari, John Nicholas. "Linking patch dynamics, landscape organization, patch-size scaling, and landscape connectivity." Diss., The University of Arizona, 2002. http://hdl.handle.net/10150/280167.

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Over time, small local disturbances may result in large regional changes in landscape structure and function. For example, lightning strikes may lead to large-scale wildfire or land clearing to urbanization. In either case, landscape patterns change as the type and distribution of landscape elements change in response to disturbances. Additionally, changes in landscape patterns often affect ecological processes. For example, wildfires and urbanization affect succession and productivity, which changes the distribution of habitat features, and which may affect landscape connectivity for species inhabiting the landscape. I used rank-size distributions and their scaling exponents to illustrate landscape character and change in Yellowstone National Park and a portion of the metropolitan area of Tucson, Arizona, through patterns associated with the distribution of patch size. I found that natural and anthropogenic disturbances affected landscape organization similarly and thus produced similar distributional patterns of patch size. However, the magnitude of change created by natural and anthropogenic disturbances differed. Fires in Yellowstone National Park produced scaling exponents >1, suggesting that large patches affected the distribution of patch size disproportionately. Comparatively, urbanization in the Tucson metropolitan area produced scaling exponents ≈1, suggesting that large and small patches affect the distribution of patch size proportionately. To link changes in landscape patterns with changes in ecological processes I compared four commonly used landscape metrics with rank-size distributions and their scaling exponents. Rank-size distributions described the scaling properties of the landscape with regard to patch size, whereas other metrics did not. This is meaningful because there is an integral relationship between scaling properties of the landscape and scaling properties of species using the landscape. A species may perceive a landscape as connected when the patch-size characteristics of the landscape scale proportionally with the body-size characteristics of the species. As a result, the species may be more likely to move through and therefore persist in that landscape. I develop a theoretical relationship between natural and anthropogenic disturbances, describe landscape organization, and link landscape and species scaling characteristics.
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Butcher, Jerrod Anthony. "Minimum patch size thresholds of reproductive success of songbirds." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2842.

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Elsdon, Michael. "An investigation of reduced size planar fed microstrip patch antennas." Thesis, Northumbria University, 2005. http://nrl.northumbria.ac.uk/1183/.

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The primary goal of this research work is to investigate the use of slot loading in reduced size planar fed microstrip patch antennas and develop new antenna structures based on this technique. At present, little theoretical investigation or design methodology exists to support the design of compact structures and research in this field is largely empirical. Moreover, little work exists on the use of planar fed designs. This necessitates a primary requirement to firstly address this knowledge gap. To facilitate this, a mathematical modelling technique that can be applied to such structures is developed. This is based upon the segmentation and Green's function approach. Using this model, the performance of slot loaded structures in terms of circuit characteristics including resonant frequency, input impedance, and Q factor is determined. Using this knowledge, a design procedure is established and subsequently used to provide a framework for the design of novel slot loaded antennas for specific applications. Several new slot loaded patch antenna configurations are designed that produce size reduction whilst allowing the use of a planar feed. The validity of the designs are confirmed through the use of commercial full-wave modelling software package Ensemble. Three linear polarised antennas are presented which are shown to achieve size reduction of 12, 40 and 55% respectively. Several compact circular polarised antenna structures are successfully implemented producing size reduction of up to 43%. A novel design for a reduced size antenna with a dual frequency response is also presented with a tuneable frequency ratio of between 1.03 — 2.0. Prototypes of the aforementioned antennas are fabricated and tested, and practical results are shown.
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Waung, I.-Hui. "Effect of patch-size and habitat-edges on intertidal distributions of microgastropods." Thesis, The University of Sydney, 2006. https://hdl.handle.net/2123/28116.

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With increasing human activity and urban development along coastal areas, much research has recently focussed on examining how fragmentation of habitats affect marine fauna in near-shore environments. This study examines relationships between density of populations and patch-size and the effect of edges of habitat on distributions of minute gastropods (microgastropods) living in patches of coralline algae on intertidal shores in south-eastem Australia.
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Minor, Jesse, Donald Falk, and Greg Barron-Gafford. "Fire Severity and Regeneration Strategy Influence Shrub Patch Size and Structure Following Disturbance." MDPI, 2017. http://hdl.handle.net/10150/624330.

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Climate change is increasing the frequency and extent of high-severity disturbance, with potential to alter vegetation community composition and structure in environments sensitive to tipping points between alternative states. Shrub species display a range of characteristics that promote resistance and resilience to disturbance, and which yield differential post-disturbance outcomes. We investigated differences in shrub patch size and stem density in response to variations in fire severity, vegetation community, and post-disturbance reproductive strategies in Sky Island forested ecosystems in the southwestern United States. Patterns in shrub structure reflect the effects of fire severity as well as differences among species with alternate post-fire reproductive strategies. Increased fire severity correlates with larger patch sizes and greater stem densities; these patterns are observed across multiple fire events, indicating that disturbance legacies can persist for decades. High severity fire produces the largest shrub patches, and variance in shrub patch size increases with severity. High severity fire is likely to promote expansion of shrub species on the landscape, with implications for future community structure. Resprouting species have the greatest variability in patch structure, while seeding species show a strong response to disturbance: resprouting species dominateatlowdisturbanceseverities,andobligateseedersdominatehighseverityareas. Differential post-fire reproductive strategies are likely to generate distinct patterns of vegetation distribution following disturbance, with implications for community composition at various scales. Shrub species demonstrate flexible responses to wildfire disturbance severity that are reflected in shrub patch dynamics at small and intermediate scales.
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Bellehumeur-Genier, Olivier. "Permafrost Patch Size Near the Margins of Discontinuous Permafrost, Southern Yukon and Northern B.C." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34969.

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This research focused on measuring permafrost patch size and related variables between Fort St. John, BC and Whitehorse, YT. Methods used included electrical resistivity tomography, climate monitoring, active layer measurement, analysis of historical aerial photos, and on-site near-vertical aerial imaging. Where permafrost is present along the transect, mean annual air temperature (2010-2014) varied from -3.3 ºC to -0.9 ºC, mean annual ground surface temperature from 0.7 ºC to 2.4 ºC and mean annual ground temperature from -0.3 ºC to 0.2 ºC (at TTOP). Permafrost patches are in the order of 10 – 50 000 m2 in area and there is a strong positive log-log relationship between patch area and maximum permafrost thickness. A conceptual model of permafrost patch size evolution under a warming climate is proposed. It is concluded that permafrost patch size depends on site-specific characteristics, the time since permafrost began to degrade and the local climate conditions.
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Towers, Naomi M. "Invertebrate community structure along a habitat-patch size gradient within a bog pool complex." Thesis, University of Edinburgh, 2004. http://hdl.handle.net/1842/435.

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This thesis characterises species richness and community structure over a habitat-patch size gradient of a typical bog-pool complex, investigating the effect of pool size on aquatic invertebrate communities. In this study, twenty-two pools were surveyed ranging in area from 8.6 m2 to 280.9 m2 within a single complex at Forsinard in the north of Scotland. Three different sampling methods were used: baited and unbaited activity traps and a sediment sampler. Univariate and multivariate methods were used to investigate the effects of pool size and pool location within the complex on species richness and community structure. The research expands our knowledge of peatland pool invertebrates by providing a comprehensive survey of the aquatic invertebrate fauna representative of the Flow Country of northern Scotland. Two IUCN British Red Data Book species were recorded: the Northern Damselfly, Coenagrion hastulatum (Charpentier), and the cased caddisfly, Nemotaulius punctatolineatus (Retzius). Three species of aquatic Coleoptera were collected that have Nationally Notable status according to Ball (1986): Dytiscus lapponicus Gyllenhal, Ilybius aenescens Thomson and Gyrinus minutus Fabricius. All these species are typical of, and often restricted to, this habitat type. The three different sampling methods differed in their sampling efficiency and each gave a different species spectrum. A distinct seasonal change in the samples was also observed. The number of taxa caught per standardised sampling unit (taxon density) was investigated over the pool size gradient. Relationships between taxon density and area were weak or non-existent in both unbaited activity traps and sediment samples. However, the number of beetle species caught in baited activity traps increased significantly with pool size, indicating that the total number of beetle species per pool may also increase over the size gradient. Ratios of the number of predator taxa to prey (non-predator) taxa for each pool ranged from 0.34 to 0.78 with a mean of 0.49 and were not affected by pool area or total taxonomic richness. Taxa displayed a positive abundance-occupancy relationship and the possible underlying mechanisms involved in creating this pattern are discussed. Multivariate techniques showed that pool area, depth, and distance from the centre of the pool complex (periferality) all had a small but significant affect on community composition and that between certain taxa there were distinctly different optima along the pool size gradient. These results are discussed in the context of species area theory.
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Noran, Julia. "EFFECTS OF PATCH SIZE AND MATRIX TYPE ON BIRD ASSEMBLAGES WITHIN CENTRAL FLORIDA CYPRESS DOMES." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2963.

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The numerous studies on the effects of patch size on bird assemblages have produced varied results. I studied the effects of patch size and surrounding matrix on bird assemblages within central Florida cypress domes. My null hypothesis was that bird assemblages within cypress domes are unaffected by dome size or development in the matrix around the dome. My alternative hypothesis was that differences in bird assemblages are correlated with size and the degree of development within the matrix. I classified a pool of over a thousand domes according to three size categories and four matrix types. Three representatives for each combination of size and matrix were spot mapped for birds from May through August 2005. I examined the relationship of species richness and bird guilds to patch size and surrounding matrix. I also measured a series of potential covariates for each dome to account for variation among the three size-matrix representatives for each combination. Richness and abundance counts were divided by the number of listening points to standardize the data by effort. I found that the standardized species richness of bird assemblages significantly increased with the patch size of cypress domes; however, matrix and the interaction effect of size and matrix on overall standardized species richness were not significant. Significant covariates included percent of the buffer undeveloped, percent herbaceous cover, and the number of listening points per unit area. A linear regression tested for significant effects of log area and matrix on standardized species richness. Matrix was not significant, but log area did have a significant effect on standardized species richness. The MANOVA tests for guild richness data indicated no significant effects of dome size, matrix, or their interaction effect on diet, foraging, or location guilds. There were no significant main or interaction effects on any individual guilds in the ANOVA output. Individual backward linear regressions done on each guild indicated that matrix did not have significant effects on any guild, but log area had significant effects on ground foragers, lower-canopy foragers, omnivores, herbivores, and edge species. I then investigated the effects of size and matrix on standardized guild abundance. Dome size and matrix significantly effected diet guild abundance, but the size-matrix interaction did not. Dome size significantly affected insectivores, omnivores, and carnivores. Matrix had a significant effect on omnivores, herbivores, and carnivores. The size and matrix interaction had a significant effect on carnivores. Dome size and matrix significantly affected foraging guild abundance, but the size-matrix interaction did not. Dome size significantly affected ground, lower- and upper-canopy foragers. Matrix had a significant effect on ground, water, and upper-canopy foragers. The size and matrix interaction was not significant for any foraging guild. Dome size and matrix significantly effected location guild abundance, but the size-matrix interaction did not. Dome size significantly affected edge and interior species. Matrix had a significant effect on edge and interior species. The size and matrix interaction was not significant for any location guild. The relationship between species richness and habitat area is well-documented, and the results of this study were consistent with the expectation of higher species richness in larger areas. If maintaining high species richness is the sole goal of conservationists, then large habitat fragments would be preferable regardless of surrounding matrix. Nevertheless, species richness alone is not informative of the potential effects of patch size and matrix on the composition of an avian assemblage. Guild analysis gives insight into community structure and should be considered in addition to simple measures of species richness. Patch size and matrix type significantly affected a number of guilds, and several factors could contribute to the observed differences in guilds across patch size categories and matrix types. Different habitats are available to birds in domes of each size class and matrix type. The potential for diverse foraging opportunities increases as domes increase in size and change in relation to their surrounding matrix. A more detailed analysis is needed to determine how differences in vegetation of domes and surrounding matrix affect guilds, members of which may use habitats both within domes and the matrix. Cypress domes in the central Florida area face severe alteration or destruction due to rapid development. Long-term research that focuses on domes before and after development is needed to understand how changes in the matrix or size of the domes affect all resident flora and fauna. A variety of taxa and biogeochemical processes should be researched. Domes are naturally highly variable in size, shape, and structure, and development changes all of these characteristics. Conservation biologists and managers urgently need to determine how development affects cypress domes and what can be done to maintain their characteristic biodiversity.<br>M.S.<br>Department of Biology<br>Arts and Sciences<br>Biology
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Johnson, Linda Gail. "Effects of habitat patch size and isolation on the population structure of two siphonarian limpets." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1005364.

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Habitat fragmentation is a fundamental process that determines trends and patterns of distribution and density of organisms. These patterns and trends have been the focus of numerous terrestrial and marine studies and have led to the development of several explanatory hypotheses. Systems and organisms are dynamic and no single hypothesis has adequately accounted for these observed trends. It is therefore important to understand the interaction of these processes and patterns to explain the mechanisms controlling population dynamics. The main aim of this thesis was to test the effect of patch size and isolation on organisms with different modes of dispersal. Mode of dispersal has previously been examined as a factor influencing the effects that habitat fragmentation has on organisms. Very few studies have, however, examined the mode of dispersal of marine organisms because it has long been assumed that marine animals are not directly influenced by habitat fragmentation because of large-scale dispersal. I used two co-occurring species of siphonariid limpets with different modes of dispersal to highlight that not only are marine organisms affected by habitat fragmentation but that they are affected in different ways. The two species of limpet, Siphonaria serrata and Siphonaria concinna, are found within the same habitat and have the same geographic range along the South African coastline, however, they have different modes of dispersal and development. The effect of patch size on organism density has been examined to a great extent with varied results. This study investigated whether habitat patch size played a key role in determining population density and limpet body sizes. The two species are found on the eastern and southern coasts of South Africa were examined across this entire biogeographic range. Patch size was found to have a significant effect on population density of the pelagic developer, S. concinna, but not the direct developing S. serrata. Patch size did play a role in determining limpet body size for both species. S. concinna body size was proposed to be effected directly by patch size whilst S. serrata body size was proposed to be affected indirectly by the effects of the S. concinna densities. The same patterns and trends were observed at five of the seven examined regions across the biogeographic range. The trends observed for S. concinna with respect to patch size conform to the source-sink hypothesis with large habitat patches acting as the source populations whilst the small habitat patches acted as the sink populations. Many previous studies have focused on the effects of habitat patch size at one point in time or over one season. I tested the influence of habitat patch size on the two species of limpets over a period of twelve months to determine whether the trends observed were consistent over time or whether populations varied with time. S. concinna showed a consistently significant difference between small and large patches; whilst S. serrata did not follow a consistent pattern. The mode of dispersal for the two limpets was used to explain the different trends shown by the two species. This examination allowed for the determining of source and sink populations for S. concinna through the examination of fluctuations in limpet body sizes and population densities at small and large habitat patches over twelve months. The direct developing S. serrata trends could not be explained using source-sink theory, as populations were independent from one another. S. serrata demonstrated body size differences at small and large patches which, may be explained by interspecific and intraspecific competition. Habitat isolation is known to play an important role in determining the structure of assemblages and the densities of populations. In this study the population density of the pelagic developing S. concinna showed a weak influence of degree of isolation whilst that of the direct developing S. serrata did not, which may be because of habitat patches along the South African coastline not having great enough degrees of isolation. The population size-structure was influenced directly influenced by isolation for S. concinna, whilst the different population size structure for S. serrata may be explained by assemblage co-dependence. The mode of dispersal showed effects on the relationship of population density and population size-structure with habitat size and isolation. This study indicates the importance of investigating patterns and processes across a range of spatial and temporal scales to gain a comprehensive understanding of factors effecting intertidal organisms.
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Mendes, Calebe Pereira [UNESP]. "Patch size, shape and edge distance influences seed predation in a keystone palm in tropical rainforests." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/122104.

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Made available in DSpace on 2015-04-09T12:28:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-04-25Bitstream added on 2015-04-09T12:48:19Z : No. of bitstreams: 1 000814781.pdf: 508841 bytes, checksum: 114537088394da2fa462089c26ce1a78 (MD5)<br>A predação de sementes é um importante tipo de processo ecológico, que afeta a abundância, diversidade e distribuição de espécies vegetais. Uma vez que esse processo ecológico depende da presença, abundancia e comportamento dos predadores de sementes, o que é afetado pelas características da paisagem, o processo de predação de sementes também acaba sendo afetado pelas características da paisagem. A maioria dos estudos em paisagens antrópicas não levam em conta as diferentes escalas em que esse processo opera. Aqui, nós avaliamos como a estrutura da paisagem afeta a predação de sementes de uma palmeira espécie-chave (Syagrus romanzoffiana) em 13 paisagens que variam em cobertura florestal, número e tamanho de fragmentos na Mata Atlântica brasileira. Nós observamos que a predação total de sementes é explicada pelo tamanho, forma e distância até a borda do fragmento. A predação de sementes pelo principal vertebrado predador de sementes (esquilos) também é relacionada com o tamanho e forma dos fragmentos, e eles interagem com os invertebrados de modo que a predação de sementes por estes é explicada principalmente pela predação por esquilos e pela distância até a borda mais próxima. Por sua vês, roedores não arborícolas são mais correlacionados com a quantidade de habitat na paisagem, predando mais sementes em paisagens com menos de 30% de habitat. Nossos resultados indicam que a predação de sementes de Syagrus romanzoffiana é mais afetada por variáveis do fragmento do que por variáveis da paisagem, e que o tamanho, a forma do fragmento e o efeito de borda são melhores preditores da predação de sementes dessa espécie-chave do que a quantidade de habitat na paisagem. Nossos resultados também ressaltam que a geometria do fragmento, uma variável negligenciada na maioria dos estudos, é importante para sistemas ecológicos<br>Seed predation is an important kind of ecological process that affect the abundance, diversity and distribution of plant species. Since this ecological process depends on the presence, abundance and behavior of seed predators, what it is affected by the landscape characteristics, the process of seed predation becomes also affected by the landscape characteristics. Most of studies on seed predation in human-modified landscapes do not take into account the different scales in which this process operates. Here we evaluate how landscape structure affects seed predation in a palm (Syagrus romanzoffiana) that provide a keystone resource to the frugivory community in 13 landscapes that vary in forest cover, fragment number and size in the Brazilian Atlantic forest. We found that the overall seed predation is explained by the fragment size, shape and the distance to the edge. Seed predation by the dominant vertebrate seed predator (squirrels) is also related with the fragment size and shape, and they interact with the invertebrates in such way that the invertebrate seed predation is mainly explained by the squirrel predation and by the distance to the edge. In turn, seed predation by terrestrial rodents is correlated with the habitat amount in the landscape, preying upon more seeds in landscapes with less than 30% of habitat. Our results indicate that the Syagrus romanzoffiana seed predation is more affected by the fragment variables than by landscape ones, and that patch size, shape and edge effect are more important predictors of seed predation of this palm than habitat amount in the landscape. Our results also highlights that the fragment geometry, a neglected variable in most of studies, is importance to ecological systems
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Books on the topic "Patch-size"

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Address Book: Amish Nine Patch (Purse Size). Sterling Pub Co Inc, 1994.

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Twenty little four-patch quilts: With full-size templates. Dover Publications, 1996.

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Ferster, David. Patch Clamp Recording in Vivo. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199939800.003.0002.

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Patch clamp recording in vivo allows an investigator to study intracellular membrane potentials in an intact organism (as opposed to cells in culture or acute brain slices). This technique is a reliable method of obtaining high-quality intracellular recordings from neurons, regardless of their size, in several parts of the mammalian brain. This chapter will describe the principles and practice of performing patch clamp experiments in vivo, beginning with a brief history of the technological developments that have made this technique possible.
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Williams, Terri. Daddy of the Cutest Pumpkin in the Patch Funny Notebook / 130 Pages / US Letter Size. Independently Published, 2021.

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Kuneck, Anthony. Coolest Pumpkin in the Patch Kids Boys Men Pumpkin Halloween Notebook / 130 Pages / US Letter Size. Independently Published, 2021.

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Nelson, Natasha. The effects of patch size and isolation on juvenile emigration in gray-tailed voles, Microtus canicaudus. 1996.

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Kuneck, Anthony. I Care for the Cutest Pumpkins in the Patch Nurse Halloween Notebook / 130 Pages / US Letter Size. Independently Published, 2021.

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Tizuko, Kettmuno. Funny the Kitty - Patch Notebook: 120 Pages - Size 6x9 Inch - Use for Doodle, Note, Plan, Music Tab, Diary... ... ... ... ... ... ... ... ... ... ... ... ... . Independently Published, 2020.

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Kim, Saehoon. The spatial patterns of urban landscape patches in Seoul and Tokyo: Patch connectivity, size effects and air pollution mitigation. 2009.

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BLAKESLEE, Thomas. Coolest Pumpkin in the Patch Pumpkin Girls Boys Halloween: Notebook, Notebook Journal Beautiful , Simple, Impressive,size 6x9 Inches, 114 Paperback Pages. Independently Published, 2021.

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Book chapters on the topic "Patch-size"

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Lutscher, Frithjof. "Critical Patch-Size." In Interdisciplinary Applied Mathematics. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29294-2_3.

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Rasane, Amol, Prashant Kumar, and Mohan Khond. "Optimization of Patch Size Using Response Surface in Asymmetric Patch Repair." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2696-1_70.

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Mojtahedi, Ramtin, Mohammad Hamghalam, Richard K. G. Do, and Amber L. Simpson. "Towards Optimal Patch Size in Vision Transformers for Tumor Segmentation." In Multiscale Multimodal Medical Imaging. Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-18814-5_11.

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Semma, Abdelillah, Yaâcoub Hannad, and Mohamed El Youssfi El Kettani. "Impact of the CNN Patch Size in the Writer Identification." In Networking, Intelligent Systems and Security. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3637-0_8.

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Mancini, Gianluca, Daniele Ventura, Edoardo Casoli, Andrea Belluscio, and Giandomenico Ardizzone. "Colonization of transplanted Posidonia Oceanica: understanding the spatial dynamics through high-spatial resolution underwater photomosaics." In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”. Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.68.

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Following the restoration of a P. oceanica meadow impacted by the Concordia shipwreck, we investigated the spatial dynamic of the most important and protected Mediterranean endemic seagrass over a two-year period applying three spatial metrics: number of patches, mean patch size and total cover. By means of underwater photomosaics, we noticed a diminution in the number of patches in favour of the mean size and total cover. The outcomes showed that, under suitable environmental conditions, P. oceanica colonizes rapidly the dead matte substrate.
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Mojtahedi, Ramtin, Mohammad Hamghalam, and Amber L. Simpson. "Multi-modal Brain Tumour Segmentation Using Transformer with Optimal Patch Size." In Brainlesion: Glioma, Multiple Sclerosis, Stroke and Traumatic Brain Injuries. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33842-7_17.

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Albayrak, Nur Banu, Emrah Yildirim, and Yusuf Sinan Akgul. "Prostate Size Inference from Abdominal Ultrasound Images with Patch Based Prior Information." In Advanced Concepts for Intelligent Vision Systems. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70353-4_22.

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Fischer, Stefan M., Lina Felsner, Richard Osuala, et al. "Progressive Growing of Patch Size: Resource-Efficient Curriculum Learning for Dense Prediction Tasks." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72114-4_49.

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Suyan, Nitin Kumar, Fateh Lal Lohar, Yogesh Solunke, and Chandresh Dhote. "Design of Compact Size Tri-Band Stacked Patch Antenna for GPS and IRNSS Applications." In Intelligent Learning for Computer Vision. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4582-9_39.

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O’Byrne, Patricia, Patrick Jackman, Damon Berry, Thomas Lee, Michael French, and Robert J. Ross. "Just-in-Time Biomass Yield Estimation with Multi-modal Data and Variable Patch Training Size." In IFIP Advances in Information and Communication Technology. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79150-6_20.

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Conference papers on the topic "Patch-size"

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Ma, Tianchang, Quoc Hung Dang, Christophe Fumeaux, Shengjian Jammy Chen, and Nghia Nguyen-Trong. "Size Reduction of a Low-Profile Frequency-Reconfigurable Filtering Patch Antenna." In 2024 IEEE Conference on Antenna Measurements and Applications (CAMA). IEEE, 2024. https://doi.org/10.1109/cama62287.2024.10986086.

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Geranmayeh, Parmida, and Eckhard Grass. "Impact of Patch Array Antenna Size and Beampattern on Wireless Network Capacity." In 2024 Asian Conference on Communication and Networks (ASIANComNet). IEEE, 2024. https://doi.org/10.1109/asiancomnet63184.2024.10811051.

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Tan, Zhuo, Ruibo Zhao, and Xin Jin. "Multi-view Rendering for Plenoptic 2.0 Videos with Multi-reference Patch Size Estimation." In 2024 IEEE International Conference on Visual Communications and Image Processing (VCIP). IEEE, 2024. https://doi.org/10.1109/vcip63160.2024.10849823.

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Razali, Nurul Inshirah Mohd, Azmir Ahmed, Norhudah Seman, and Nor Aishah Muhammad. "SAR Investigation on 2.1 GHz Microstrip Antenna with Different Patch Size and Grounding." In 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI). IEEE, 2024. http://dx.doi.org/10.1109/ap-s/inc-usnc-ursi52054.2024.10686468.

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Hoque, Oishee Bintey, Samarth Swarup, Abhijin Adiga, Sayjro Kossi Nouwakpo, and Madhav Marathe. "IrrNet: Advancing Irrigation Mapping with Incremental Patch Size Training on Remote Sensing Imagery." In 2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW). IEEE, 2024. http://dx.doi.org/10.1109/cvprw63382.2024.00555.

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İnce, Taner, and Tuğcan Dündar. "3D Convolution and Adaptive Patch-Size Based Random Patches Network for Hyperspectral Image Classification." In 2024 8th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT). IEEE, 2024. https://doi.org/10.1109/ismsit63511.2024.10757224.

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Kumar, R. S. Vinod, and S. Arivazhagan. "Effects of variation of patch size and seam size in patch based texture synthesis." In 2010 International Conference on Computing, Communication and Networking Technologies (ICCCNT'10). IEEE, 2010. http://dx.doi.org/10.1109/icccnt.2010.5591571.

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Zhou, Hailing, and Jianmin Zheng. "Adaptive patch size determination for patch-based image completion." In 2010 17th IEEE International Conference on Image Processing (ICIP 2010). IEEE, 2010. http://dx.doi.org/10.1109/icip.2010.5654120.

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Vedral, James L., and Randall L. Musselman. "Patch antenna size-reduction parametric study." In 2017 International Applied Computational Electromagnetics Society Symposium - Italy (ACES). IEEE, 2017. http://dx.doi.org/10.23919/ropaces.2017.7916047.

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Peter, Sanjana, and C. D. Suriyakala. "Small-size circular polarized patch antenna." In 2017 International Conference on Circuit ,Power and Computing Technologies (ICCPCT). IEEE, 2017. http://dx.doi.org/10.1109/iccpct.2017.8074336.

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Reports on the topic "Patch-size"

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Fehey, Kristina, and Dustin Perkins. Invasive exotic plant monitoring in Capitol Reef National Park: 2019 field season, Scenic Drive and Cathedral Valley Road. Edited by Alice Wondrak Biel. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2286627.

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Invasive exotic plant (IEP) species are a significant threat to natural ecosystem integrity and biodiversity, and controlling them is a high priority for the National Park Service. The North-ern Colorado Plateau Network (NCPN) selected the early detection of IEPs as one of 11 monitoring protocols to be implemented as part of its long-term monitoring program. From May 30 to June 1, 2019, network staff conducted surveys for priority IEP species along the Scenic Drive and Cathedral Valley Road monitoring routes at Capitol Reef National Park. We detected 119 patches of six priority IEP species along 34 kilometers of the two monitor-ing routes. There were more patches of IEPs, and a higher percentage of large patches, than in previous years. This indicates that previously identified infestations have expanded and grown. The most common (47.1%) patch size among priority species was 1,000–2,000 m2 (0.25–0.5 acre). The vast majority (93.2%) of priority patches ranked either low (58.8%) or very low (34.4%) on the patch management index scale. Tamarisk (Tamarix sp., 72 patches) was the most prevalent priority IEP species. African mustard (Malcolmia africana, 32 patch-es), field bindweed (Convolvulus arvensis, 9 patches), and Russian olive (Elaeagnus angusti-folia, 3 patches) occurred less commonly. Together, these four species represented 97.5% of all patches recorded in 2019. Four IEP species were found on the monitored routes for the first time: Russian olive (Elaeagnus angustifolia), quackgrass (Elymus repens), Siberian elm (Ulmus pumila), and African mustard (Malcolmia africana, not on the priority species list before 2019). Cathedral Valley Road had higher IEP priority patches per kilometer (5.68) than the Scenic Drive (2.05). IEP species were found on 37.9% (25 of 66) of monitored transects. Almost all these detections were Russian thistle (Salsola sp.). Russian thistle was widespread, present in 33.3% of transects, with an estimated cover of 0.2% across all transects sampled. Across routes monitored in all three rotations (2012, 2015, and 2019), Russian thistle has increased in frequency. However, its frequency remained about the same from 2015 to 2019, and percent cover remains low. Tamarisk and field bindweed have both increased in preva-lence since monitoring began, with tamarisk showing a dramatic increase in the number and size of patches. Immediate control of tamarisk and these other species is recommended to reduce their numbers on these routes. The NCPN plans to Capitol Reef in 2020 to monitor Oak and Pleasant creeks, completing the third rotation of invasive plant monitoring.
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Hamingson, Ellen. Control jubata grass hotspots in the Point Reyes Wilderness: Review of project funded FY2016?2018. National Park Service, 2024. http://dx.doi.org/10.36967/2302636.

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Jubata grass--one of Point Reyes National Seashore?s highest-priority invasive species--threatens important habitat in designated wilderness. Natural Resource funding ($210,000) was obtained to eradicate small infestations and bring 3,025 acres to maintenance level. Work was conducted 2016-2019 in the central wilderness, source of the highest jubata grass concentration. We treated 278 patches (7.8 gross and 3.0 net infested acres), 13% (37 patches) twice, across 3,300 landscape acres. About 17% were initially treated chemically; 83% were manually removed. Due to increased costs, jubata grass spread, and unexpected challenges, treatments were not implemented over the full project area. Patches treated manually and chemically with and without retreatment were monitored in summer 2019. We assessed effects on jubata grass cover and presence of regrowth; variation among treatments; and factors that might explain variability. Treatment resulted in highly significant reductions in patch-level jubata grass cover. Over half the monitored patches had over 50% jubata grass cover pre-treatment; by summer 2019, about half had no jubata grass, and none had 50% or higher jubata grass cover. Results did not differ significantly among treatments. With marginal significance, results indicated post-treatment cover and regrowth could be related to patch size, plant distribution, or soil type. Smaller, more isolated, or patches on sandier soils were more likely to be eradicated. Though the largest patches were not eradicated, cover was substantially reduced if retreatment was applied. Lessons learned may help guide future management, ideally with new approaches as they develop, given significant constraints on herbicide use.
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LEWIN, K. F., J. NAGY, and T. B. WATSON. FINAL REPORT: EDDY-COVARIANCE FLUX TOWER AND TRACER TECHNOLOGY SUPPORT FOR THE UNIVERSITY OF GEORGIA PROPOSAL: FROM TOWER TO PIXEL: INTEGRATION OF PATCH-SIZE NEE USING EXPERIMENTAL MODELING FOOTPRINT ANALYSIS. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/920317.

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Perkins, Dustin. Invasive exotic plant monitoring at Colorado National Monument: 2019 field season. Edited by Alice Wondrak Biel. National Park Service, 2021. http://dx.doi.org/10.36967/nrr-2286650.

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Invasive exotic plant (IEP) species are a significant threat to natural ecosystem integrity and biodiversity, and controlling them is a high priority for the National Park Service. The North-ern Colorado Plateau Network (NCPN) selected the early detection of IEPs as one of 11 monitoring protocols to be implemented as part of its long-term monitoring program. This report represents work completed at Colorado National Monument during 2019. During monitoring conducted June 12–19, a total of 20 IEP species were detected on monitoring routes and transects. Of these, 12 were priority species that accounted for 791 separate IEP patches. IEPs were most prevalent along riparian areas. Yellow sweetclover (Melilotis officinale) and yellow salsify (Tragopogon dubius) were the most commonly detected priority IEPs along monitoring routes, representing 73% of all priority patches. Patches of less than 40 m2 were typical of nearly all priority IEP species except yellow sweetclover. A patch management index (PMI) was created by combining patch size class and percent cover for each patch. In 2019, a large majority of priority IEP patches were assigned a PMI score of low (46%) or very low (50%), indicating small and/or sparse patches where control is generally still feasible. This is similar to the numbers for 2017, when 99% of patches scored low or very low in PMI. Seventy-eight percent of tree patches were classified as seedlings or saplings, which require less effort to control than mature trees. Cheatgrass (Anisantha tectorum) was the most common IEP recorded in transects, found in 30–77% of transects across the different routes. It was the only species found in transects on all monitoring routes. When treated and untreated extra areas near the West Entrance were compared, the treated area had comparable or higher lev-els of IEPs than the untreated area. When segments of monitoring routes conducted between 2003 and 2019 were compared, results were mixed, due to the different species monitored in different time periods. But in general, the number of IEPs per 100 meters is increasing or remaining constant over time. There were notable increases in IEP patches per 100 meters on several routes in 2019: field bindweed (Convolvulus arvensis) along East Glade Park Road; Siberian elm (Ulmus pumila) in Red Canyon; yellow salsify along East Glade Park Road, No Thoroughfare Canyon, No Thoroughfare Trail, and Red Canyon; and yellow sweetclover in No Thoroughfare Canyon and Red Canyon. Network staff will return to re-sample monitoring routes in 2021.
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Lenz, Mark. RV POSEIDON Fahrtbericht / Cruise Report POS536/Leg 1. GEOMAR, 2020. http://dx.doi.org/10.3289/geomar_rep_ns_56_2020.

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DIPLANOAGAP: Distribution of Plastics in the North Atlantic Garbage Patch Ponta Delgada (Portugal) – Malaga (Spain) 17.08. – 12.09.2019 The expedition POS 536 is part of a multi-disciplinary research initiative of GEOMAR investigating the origin, transport and fate of plastic debris from estuaries to the oceanic garbage patches. The main focus will be on the vertical transfer of plastic debris from the surface and near-surface waters to the deep sea and on the processes that mediate this transport. The obtained data will help to develop quantitative models that provide information about the level of plastic pollution in the different compartments of the open ocean (surface, water column, seafloor). Furthermore, the effects of plastic debris on marine organisms in the open ocean will be assessed. The cruise will provide data about the: (1) abundance of plastic debris with a minimum size of 100 μm as well as the composition of polymer types in the water column at different depths from the sea surface to the seafloor including the sediment, (2) abundance and composition of plastic debris in organic aggregates (“marine snow”), (3) in pelagic and benthic organisms (invertebrates and fish) and in fecal pellets, (4) abundance and the identity of biofoulers (bacteria, protozoans and metazoans) on the surface of plastic debris from different water depths, (5) identification of chemical compounds (“additives”) in the plastic debris and in water samples.
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Laughlin, Madison, Natasha Antonova, John Boetsch, Brian Harvey, and Joshua Lawler. Landscape disturbance status and trend analysis report for the North Coast and Cascades Inventory and Monitoring Network, 1987–2017. National Park Service, 2025. https://doi.org/10.36967/2313366.

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Disturbance is a key characteristic of landscapes that significantly influences ecosystem functions such as carbon storage, water storage, and nutrient cycling, as well as ecosystem structure and productivity. This report summarizes disturbance patterns and trends for three national parks—North Cascades National Park Service Complex, Olympic National Park, and Mount Rainier National Park—and adjacent federally protected wilderness areas in the Pacific Northwest. We assessed changes greater than 0.8 ha across a 31-year period from 1987 through 2017 as detected using freely available satellite imagery, an automated change detection algorithm, and human review to identify and label disturbance areas in the following categories: Fire, Riparian Change, Avalanche, Defoliation, Mass Movement, Blowdown, Coastal Change, Ice Damage, Development, and Clearing. Fire was the predominant disturbance category for all parks combined, affecting 78% of cumulative disturbed area, followed by Defoliation which affected approximately 12% of total disturbed area. Generalized linear models indicated significant increases of annual disturbed area affected by Fire at Mount Rainier and Olympic National Park. Mean disturbance patch size also increased for Mount Rainier and all park study areas combined. Additionally, the number of Defoliation disturbance events at North Cascades National Park Service Complex and in all park study areas combined increased in the latter half of the study period (2000 to 2017) compared with the first half, as well as annual area affected by Defoliation in the eastern portion of North Cascades. These results, maps, and summaries provide useful baseline information about the frequency, extent, and magnitude of landscape change processes in and adjacent to our parks that can be used for guiding natural resource planning and understanding disturbance patterns in remote wilderness areas.
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Shriver, Greg, and Leah Rudge. Grassland bird and raptor inventory of Harpers Ferry National Historical Park, 2022. National Park Service, 2024. http://dx.doi.org/10.36967/2304340.

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Harpers Ferry National Historical Park (NHP) includes grassland habitats that are maintained for the interpretation of historic Civil War battles. In 2022, as part of the National Park Service Inventory and Monitoring program, the University of Delaware conducted a grassland bird and raptor inventory in the park. The goals of this inventory were to determine the grassland bird use of Harpers Ferry grasslands during Spring and Fall migration, estimate the abundance and daily nest survival for focal breeding species, and determine the raptor use during migration. We established and used multiple avian sampling techniques to address these goals including distance sampling using line transects, mist-netting to capture passerine birds, point counts, hawk watching, and nest searching and monitoring. We conducted this inventory during the annual cycle starting in March 2022 and completed the sampling in October 2022. During the course of this effort, we detected 111 species using the Harpers Ferry grasslands at some time during the year. We found that the park is supporting migrating and breeding grassland birds and that the avian species composition changes over the course of the annual cycle. During migration, we detected focal grassland bird species including Bobolink, Savannah Sparrow, Grasshopper Sparrow, and Eastern Meadowlark. During the breeding season, we located and monitored Eastern Meadowlark and Grasshopper Sparrow nests with adequate sample sizes to estimate daily nest survival. We found that Eastern Meadowlark daily nest survival was relatively high (99%) and was influenced by the proximity of the nest to a forested edge. We recommend the park focus on Eastern Meadowlark and Grasshopper Sparrows as these two species used the park during both Spring and Fall migrations and successfully fledged young during the breeding season. The park could attempt to maintain or enhance Eastern Meadowlark and Grasshopper Sparrow use of the park during all stages of the annual cycle but especially during the breeding season. This could be achieved by continuing to keep the existing breeding areas intact through delayed mowing (no mowing from 15 May ? 15 July), removing tree lines and woody or non-native vegetation to increase the perceived openness and grassland patch size, and continuing to monitor the effects of any management actions that may influence grassland bird use of Harpers Ferry NHP. Grassland birds are a national conservation priority so any sites that have the capacity to maintain or enhance these declining habitat specialists should do so. Grassland birds provide an opportunity to integrate cultural and natural resources as these birds were most certainly present prior to, during, and after the Civil War Battles that Harpers Ferry was established to commemorate.
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