Small-scale spatial variation in age and size

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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 … 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 …

Spatial variations and determinants of malnutrition among under …

WebApr 11, 2024 · An ICESat-2 product that has global terrain height available is the level 3b “Global Geolocated Photon Data” (ATL08) but it has a fixed downsampled spatial resolution of 100 meters (National Snow and Ice Data Center, 2024). For detailed analyses on landscapes with large changes in relief over small areas, this resolution is too coarse. WebDec 1, 2007 · The size, age structure and growth rate of vermilion snapper varied significantly between reef sites separated by relatively small distances. This variation in … church library clip art free

Spatial scale and small area population statistics for England …

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 ... WebAug 24, 2024 · A small divergent group, which seems partly related to fish size, was noted at both spatial and temporal scales. Based on these results and before embarking on a study of population structure using otolith … Webinformation is contained at each spatial scale for sub-categories relating to age, ethnic group, housing tenure, car or van availabil-ity, qualiﬁcations, employment, limiting long-term illness (LLTI) and National Statistics Socio-economic Classiﬁcation (NS-SeC). The amount of variation contained by each level of the hierarchy church library clipart

Spatial variation in demography and population growth rate: …

Webbly and structure, which are expressed by spatial variations along the altitudinal gradient. At the same time, temporal patterns were not inuenced by altitude-related environmen-tal variation, resulting in a similar dynamic behaviour across the gradient, suggesting that broad-scale factors may play a more important role than local ones. 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 … dewalt chainsaw storage boxWebSpatial 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 … church library organizer pro

"WebApr 15, 2024 · Within channel belts, the active river channel extent in 2024 covered an area of 4.72 × 10 5 km 2 or 15% of the total channel belt area. Oxbow lakes or smaller rivers represent an additional 1.46 ... " - Small-scale spatial variation in age and size

Small-scale spatial variation in age and size

Small-Scale Spatial Variation in Population Dynamics and …

WebThis variation in body size over a small spatial scale appears to be coupled with changes in age-related parameters, with earlier age of maturity and shorter longevities in dwarf populations of the newt T. pygmaeus(Díaz- Paniagua et al. 1996). 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...

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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:

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. WebApr 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.

WebJul 1, 2024 · The spatial scale of the Massachusetts channeled whelk fishery is relatively small, with all catch occurring within the southern extent of state waters. Massachusetts has sole management authority of the channeled whelk resource within state waters, and focuses on input controls including minimum legal size, limited license entry, trap limits ... 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

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).

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 … church library imagesWebevaluated 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 dewalt chainsaw sydney toolsWebApr 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 … church library ldsWebJul 16, 2013 · Despite long planktonic durations, many species of broadcast spawning invertebrates exhibit genetic structure at small spatial and temporal scales. Amplified fragment length polymorphisms were used to assess genetic variation in the sea scallop, Placopecten magellanicus, among four inshore and one offshore location in the Gulf of … dewalt chair with wheelsWebTo 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) … dewalt chainsaw stopped workingWebFeb 1, 2024 · The fact that the scales increase with decreasing strength of density regulation is further illustrated by Fig. 3 showing the factors G ij1 and G ij2 in Eq. (6) multiplied by the … church library ideasWebFeb 28, 2013 · The purpose of this study was to quantify the spatial variation in abundance of juvenile corals (≤50 mm) among three sectors of the Australian’s Great Barrier Reef … dewalt challenger safety boots