Small-scale spatial variation in age and size

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August undefined, 2024

WebFaces in the wild may contain pose variations, age changes, and with different qualities which significantly enlarge the intra-class variations. Although great progresses have been made in face recognition, few existing works could learn local and multi-scale representations together. In this work, we propose a new model, called Local and multi … WebDec 24, 2024 · INTRODUCTION. Gene flow is an important evolutionary parameter ultimately determining the spatial extension in which individuals share a common gene pool and the amount of genetic subdivision (Wright, 1946).Unlike mutation that creates new variation, gene flow is the exchange of alleles among populations promoting the income of allelic …

Size-effect, asymmetry, and small-scale spatial variation …

WebOct 1, 2013 · Alongshore spatial variation at ≤ 500 m was small, but similar to 100 km scales. • Our study demonstrates the potential for nursery processes to vary at small scales. Abstract L. (‘YOY plaice’) at beaches on the western side of the British Isles at small alongshore (100–500 Keywords Flatfish nursery Habitat heterogeneity Individual growth … WebMar 21, 2024 · We studied the spatio-temporal variation of adult life-history traits linked to age and body size in the common frog ( Rana temporaria) from low (i.e., valley at 480 m … chime help email

Spatial variation in demography and population growth rate: the ...

WebTo investigate how tillage intensity modifies the small-scale spatial variability of soil and winter wheat parameters, field trials were conducted on small plots (12 m × 35 m) … WebNov 1, 2015 · Here, we assess small-scale spatial variation in size at maturity over a year to identify the seasons that increase error in visual maturity estimates. We compare and contrast results from... WebApr 11, 2024 · Childhood undernutrition is a major public health challenge in sub-Saharan Africa, particularly Nigeria. Determinants of child malnutrition may have substantial spatial heterogeneity. Failure to account for these small area spatial variations may cause child malnutrition intervention programs and policies to exclude some sub-populations and … gradle build snapshot

Small-scale spatial structure influences large-scale invasion …

Small-scale spatial variation in age and size at maturity of stream ...

WebJul 24, 2006 · Introduction. Spatial variation in demography and population growth rate (λ) is predicted to play a major part in determining the structure and dynamics of populations … Web2003). Spatial variability is normally addressed in terms of large-scale differences (Davidson-Arnott and Law, 1990; Goldsmith et al, 1990), but Gares et al (1996) evaluated small scale (0 to 5 m) variations along the beach (shore-parallel trapping line) during an offshore wind. This study is complementary to Gares et al (1996) in that it ... chime help lineWebAbstract – This study documents substantial small-scale spatial variation in age and size at maturity of brown trout (Salmo trutta) found either in allopatry (above major waterfalls) … chime help with login

"WebSep 28, 2016 · Spatial variation in age structure can develop over time for at least two reasons. First, if recruitment is limited within a local population, then over time individuals will age and older individuals will disproportionately make up the local population in the absence of immigration [ 10 ]. " - Small-scale spatial variation in age and size

Small-scale spatial variation in age and size

Spatial variation in demography and population growth rate: …

WebThe spatial variation in risk of MS was estimated by kernel regression. Results: We identified spatial variation in the risk of MS according to residence at birth, age 15, and onset of … WebHowever, such spatial variation is challenging to quantify. We use>20 years of individual life-history data to quantify small- and large-scale spatial variation in demography and lambda within a single population of red-billed choughs Pyrrhocorax pyrrhocorax on Islay, Scotland.

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WebJan 5, 2024 · interactions typically generate small-scale spatial structure that occurs at a length scale of the order one to ten times an individual’s size. Despite being local in origin, spatial structure can have signi cant large-scale e ects on population size, and even determine whether the population survives or dies (Law et al., 2003). Webevaluated smaller-scale variations in benthic charac-teristics within a culture site (1) under long lines vs. between long lines or (2) in areas with juvenile bivalves (i.e. at the beginning of the growth cycle) vs. bivalves of commercial size. Such variation should be taken into account when evaluating the influence of

WebUnderstanding the pattern and magnitude of spatial variation in demography and population growth rate (λ) is key to understanding the structure and dynamics of natural populations. However, such spatial variation is challenging to quantify. We use > 20 years of individual life-history data to quantify small- and large-scale spatial variation in WebDec 31, 2012 · Here we utilize CFR to explore spatial variability in life history and demography of the rocky reef-associated grass rockfish (Sebastes rastrelliger) in the …

WebSeveral high- and low-risk areas were identified across the country with some variation between birth, age 15, and onset. Conclusions: Small-scale geographical variation in the risk of MS suggests that local environmental risk factors could be at play and may be related to life style factors. Keywords: WebTo investigate how tillage intensity modifies the small-scale spatial variability of soil and winter wheat parameters, field trials were conducted on small plots (12 m × 35 m) in three temperate environments in the Swiss midlands: Zollikofen in 1999 (loamy silt soil; Gleyic Cambisol) and Schafisheim in 1999 and in 2000 (sandy loam soil; Orthic Luvisol). …

WebSpatial scale is a specific application of the term scale for describing or categorizing (e.g. into orders of magnitude) the size of a space (hence spatial), or the extent of it at which a …

WebThis article makes two key contributions. The first relates to spatial variation in population sub-groups (demographic and socio-economic) in England and Wales. The second concerns the amount of spatial information contained at different spatial scales for the (ilr-transformed) variables included in the analysis. chime help phone numberWeb31 small-scale variation in life history traits of sub-Artic amphibians. We studied the spatio-temporal 32 variation of adult life history traits linked to age and body size in the common … chime high yieldWebFeb 1, 2014 · To characterize exposures to particulate matter (PM) and its components, we performed a large sampling study of small-scale spatial variation in size-resolved particle … gradle buildsrc exampleWebSpatial variability. Spatial variability occurs when a quantity that is measured at different spatial locations exhibits values that differ across the locations. Spatial variability can be … gradle buildsrc pluginWebApr 10, 2024 · The aims of this study were to (1) compare the CST prediction accuracy using different datasets and machine learning; (2) estimate the spatial variation of CST in the UTCBF, with its different forest types and stand ages; and (3) evaluate the possible factors driving the spatial distribution of carbon stock in the UTCBF at a landscape scale. 2. chime helocWebJul 1, 2024 · This study was designed to determine the size and age at which channeled whelk mature, evaluate whether there are differences by sex and area, and to determine … chime helps creditWebto identify small-scale variability in sediment transport with winds nearly parallel to the shoreline orientation. The study was conducted on a sand beach at Ocean City, New … chime high yield savings account review