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You searched for: Subject "population size" Remove constraint Subject: "population size"
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1. Spatially integrated modelling of data-limited orange roughy (Hoplostethus atlanticus) using environmental covariates

Author:
Charles T.T. Edwards; Marie-Julie Roux; Malcolm R. Clark
Source:
Canadian journal of fisheries and aquatic sciences 2022 v.79 no.3 pp. 448-457
ISSN:
1205-7533
Subject:
population size,   etc   ; Hoplostethus atlanticus; models; seamounts;     Show all 4 Subjects
Abstract:
... Spatial stock assessment models are recognised as increasingly important for estimation of stock status and a sustainable exploitation rate. The inclusion of movement between spatial units within a model is difficult because the data requirements are high. However, for populations with low levels of spatial exchange it is possible to reduce the data requirements by distributing information on biol ...
DOI:
10.1139/cjfas-2020-0265

2. The Effect of Population Pseudo-Rejuvenation in Adverse Changes in Living Conditions: A Case Study on the Highland Plant Species in the Ukrainian Carpathians

Author:
Volodymyr Kyyak; Natalia Kyyak; Volodymyr Bilonoha; Vitali Shtupun
Source:
Ekológia (Bratislava) 2022 v.41 no.2 pp. 155-160
ISSN:
1337-947X
Subject:
population size,   etc   ; case studies; forests; population structure;     Show all 4 Subjects
Abstract:
... “Rejuvenation of population” is commonly considered as an increase in the proportion of young individuals in the population. In our opinion, the term “rejuvenation” has to be used in case of an increasing percentage of young individuals providing maintenance or increase of the entire population size. In return, an increasing percentage of young individuals while reducing the number of the entire p ...
DOI:
10.2478/eko-2022-0016

3. Evolutionary bet‐hedging reconsidered: What is the mean–variance trade‐off of fitness?

Author:
Yukio Yasui
Source:
Ecological research 2022 v.37 no.3 pp. 406-420
ISSN:
0912-3814
Subject:
population size,   etc   ; computers; extinction; genotype; phenotype; variance;     Show all 6 Subjects
Abstract:
... In traditional theories, bet‐hedging in evolutionary biology is defined as a trade‐off between the within‐generation arithmetic mean fitness (AMF) of a genotype and between‐generation variance (BGV) in AMF across generations. The rationale of this definition is that a bet‐hedger genotype suppresses the BGV to increase between‐generation geometric mean fitness (GMF; an index of long‐term sustainabi ...
DOI:
10.1111/1440-1703.12303

4. A modeling approach to estimate the historical population size of the Patagonian Kawésqar people

Author:
Sergio A Estay; Daniela N López; Carmen P Silva; Eugenia M Gayo; Virginia McRostie; Mauricio Lima
Source:
Holocene 2022 v.32 no.6 pp. 578-583
ISSN:
1477-0911
Subject:
population size,   etc   ; Holocene epoch; demography; humans; Argentina;     Show all 5 Subjects
Abstract:
... The study of human-gatherers societies’ demography used to be a difficult task due to the lack of direct evidence to support the estimations. This is the case of several human groups from Pacific Patagonia whose historical population size estimations are controversial. This study estimated the historical population size for the Kawésqar people using direct and indirect evidence. Thus, we collated ...
DOI:
10.1177/09596836221080761

5. Dataset on optimizing ambulance deployment and redeployment in Fez-Meknes region, Morocco

Author:
Youness Frichi; Fouad Jawab; Lina Aboueljinane
Source:
Data in Brief 2022 v.42 pp. 108178
ISSN:
2352-3409
Subject:
population size,   etc   ; computers; data collection; hospitals; Morocco;     Show all 5 Subjects
Abstract:
... Emergency Medical Services (EMS) are crucial for saving patients' life, attenuating disabilities, and improving patients' satisfaction. Optimal deployment and redeployment of ambulances over a territory reduce response times for serving emergencies. Thus, rapid interventions and transport to a hospital are guaranteed. Optimizing ambulance deployment and redeployment is achieved by conceptualizing ...
DOI:
10.1016/j.dib.2022.108178

6. Multi-species population indices for sets of species including rare, disappearing or newly occurring species

Author:
Fränzi Korner-Nievergelt; Nicolas Strebel; Stephen T. Buckland; Robin Freeman; Richard D. Gregory; Jérôme Guélat; Nick J.B. Isaac; Louise Mc Rae; Tobias Roth; Saskia Schirmer; Leo L. Soldaat; Petr Voříšek; Thomas Sattler
Source:
Ecological indicators 2022 v.140 pp. 109005
ISSN:
1470-160X
Subject:
population size,   etc   ; binomial distribution; rare species; uncertainty; variance;     Show all 5 Subjects
Abstract:
... Multi-species indices (MSI) are widely used as ecological indicators and as instruments to inform environmental policies. Many of these indices combine species-specific estimates of relative population sizes using the geometric mean. Because the geometric mean is not defined when values of zero occur, usually only commoner species are included in MSIs and zero values are replaced by a small non-ze ...
DOI:
10.1016/j.ecolind.2022.109005

7. Population Size Estimation Using Zero-Truncated Poisson Regression with Measurement Error

Author:
Wen-Han Hwang; Jakub Stoklosa; Ching-Yun Wang
Source:
Journal of agricultural, biological, and environmental statistics 2022 v.27 no.2 pp. 303-320
ISSN:
1085-7117
Subject:
population size,   etc   ; body weight; mark-recapture studies; statistics;     Show all 4 Subjects
Abstract:
... Population size estimation is an important research field in biological sciences. In practice, covariates are often measured upon capture on individuals sampled from the population. However, some biological measurements, such as body weight, may vary over time within a subject’s capture history. This can be treated as a population size estimation problem in the presence of covariate measurement er ...
DOI:
10.1007/s13253-021-00481-z

8. Retail food environment in a Brazilian metropolis over the course of a decade: evidence of restricted availability of healthy foods

Author:
Irene Carolina Sousa Justiniano; Mariana Carvalho de Menezes; Larissa Loures Mendes; Milene Cristine Pessoa
Source:
Public health nutrition 2022 v.25 no.9 pp. 2584-2592
ISSN:
1475-2727
Subject:
population size,   etc   ; ecological studies; healthy diet; income; Brazil;     Show all 5 Subjects
Abstract:
... To evaluate changes in the retail food environment profile in a Brazilian metropolis over a 10-year period. An ecological study was conducted in the city of Belo Horizonte, Minas Gerais, Brazil. The addresses of formal food establishments were geocoded and classified according to their sold-food profile. Density changes were analysed according to neighbourhood, population size, income level and ge ...
DOI:
10.1017/S1368980022000787

9. Analyses of Genetic Diversity in the Endangered “Berrenda” Spanish Cattle Breeds Using Pedigree Data

Author:
Rafael González-Cano; Ana González-Martínez; María Eva Muñoz-Mejías; Pablo Valera; Evangelina Rodero
Source:
Animals 2022 v.12 no.3 pp. -
ISSN:
2076-2615
Subject:
effective population size,   etc   ; cattle; genetic variation; herds; pedigree;     Show all 5 Subjects
Abstract:
... Pedigree analyses of two endangered cattle breeds were performed in order to study the structure and the genetic variability in their populations. Pedigree data were analyzed from 12,057 individuals belonging to the “Berrenda en Negro” cattle breed (BN) and 20,389 individuals belonging to the “Berrenda en Colorado” cattle breed (BC) that were born between 1983 and 2020. BN and BC reference populat ...
DOI:
10.3390/ani12030249

10. Population assessment without individual identification using camera-traps: A comparison of four methods

Author:
Giacomo Santini; Milo Abolaffio; Federico Ossi; Barbara Franzetti; Francesca Cagnacci; Stefano Focardi
Source:
Basic and applied ecology 2022 v.61 pp. 68-81
ISSN:
1439-1791
Subject:
population size,   etc   ; animals; applied ecology; cameras; locomotion; wildlife;     Show all 6 Subjects
Abstract:
... The use of camera traps to estimate population size when animals are not individually recognizable is gaining traction in the ecological literature, because of its applicability in population conservation and management. We estimated population size of synthetic animals with four camera trap sampling-based statistical models that do not rely on individual recognition. Using a realistic model of an ...
DOI:
10.1016/j.baae.2022.03.007

11. Epidemiological Trends of Trans-Boundary Tick-Borne Encephalitis in Europe, 2000–2019

Author:
Mulugeta A. Wondim; Piotr Czupryna; Sławomir Pancewicz; Ewelina Kruszewska; Monika Groth; Anna Moniuszko-Malinowska
Source:
Pathogens 2022 v.11 no.6 pp. -
ISSN:
2076-0817
Subject:
population size,   etc   ; people; tick-borne encephalitis; viruses; weather; Europe;     Show all 6 Subjects
Abstract:
... Tick-borne encephalitis is a neuroinfection widely distributed in the Euro–Asia region. Primarily, the virus is transmitted by the bite of infected ticks. From 2000–2019, the total number of confirmed cases in Europe reported to the European Centre for Disease Prevention and Control was 51,519. The number of cases decreased in 2014 and 2015; however, since 2015, a growing number of cases have been ...
DOI:
10.3390/pathogens11060704

12. Passive acoustic monitoring provides predictable and reliable underestimates of population size and longevity in wild Savannah Sparrows

Author:
Abby L. J. Hensel; Sarah L. Dobney; Ines G. Moran; Ian P. Thomas; Joseph B. Burant; Bradley K. Woodworth; Stéphanie M. Doucet; Amy E. M. Newman; D. Ryan Norris; Heather Williams; Daniel J. Mennill
Source:
Ornithological applications 2022 v.124 no.3 pp. 1-11
ISSN:
2732-4621
Subject:
population size,   etc   ; Passerculus sandwichensis; bioacoustics; death; longevity; males; songbirds;     Show all 7 Subjects
Abstract:
... Many breeding birds produce conspicuous sounds, providing tremendous opportunities to study free-living birds through acoustic recordings. Traditional methods for studying population size and demographic features depend on labor-intensive field research. Passive acoustic monitoring provides an alternative method for quantifying population size and demographic parameters, but this approach requires ...
DOI:
10.1093/ornithapp/duac018

13. Trade-offs in the conservation of phylogenetically distinctive species

Author:
Sandrine Pavoine; Carlo Ricotta
Source:
Biological conservation 2022 v.270 pp. 109565
ISSN:
0006-3207
Subject:
population size,   etc   ; Equus africanus; data collection; extinction; phylogeny; risk;     Show all 6 Subjects
Abstract:
... Many phylogenetically distinctive species are the last surviving member of a once diverse clade. The loss of these species would thus represent the last stage in the loss of the clade, which likely occurred over a long evolutionary history. However, the implementation of conservation actions targeting threatened phylogenetically distinctive species remains limited and has relied on a single view o ...
DOI:
10.1016/j.biocon.2022.109565

14. The role of demographic compensation in stabilising marginal tree populations in North America

Author:
Xianyu Yang; Amy L. Angert; Pieter A. Zuidema; Fangliang He; Shongming Huang; Shouzhong Li; Shou‐Li Li; Nathalie I. Chardon; Jian Zhang
Source:
Ecology letters 2022 v.25 no.7 pp. 1676-1689
ISSN:
1461-023X
Subject:
population size,   etc   ; climate; population growth; trees; viability; North America;     Show all 6 Subjects
Abstract:
... Demographic compensation—the opposing responses of vital rates along environmental gradients—potentially delays anticipated species’ range contraction under climate change, but no consensus exists on its actual contribution. We calculated population growth rate (λ) and demographic compensation across the distributional ranges of 81 North American tree species and examined their responses to simula ...
DOI:
10.1111/ele.14028

15. Estimation of Population Size and Sex Ratio of Ryukyu Scops Owl Otus elegans on Hateruma Island

Author:
Akira Sawada
Source:
Ornithological science 2022 v.21 no.2 pp. 245-251
ISSN:
1347-0558
Subject:
population size,   etc   ; Otus; mark-recapture studies; models; sex ratio;     Show all 5 Subjects
Abstract:
... Fundamental demographic data of insular populations of Otus owls are not available for most species. This study investigated the population size and the sex ratio of the Ryukyu Scops Owls Otus elegans on Hateruma Island. Capture-recapture data was obtained by intensive marking and route census surveys from July to September in 2021. Analysing the data using a site-occupancy model combined with a d ...
DOI:
10.2326/osj.21.245

16. An opinion piece: the evolutionary and ecological consequences of changing selection pressures on marine migration in Atlantic salmon

Author:
Colin E. Adams; Louise Chavarie; Jessica R. Rodger; Hannele M. Honkanen; Davide Thambithurai; Matthew P. Newton
Source:
Journal of fish biology 2022 v.100 no.4 pp. 860-867
ISSN:
0022-1112
Subject:
population size,   etc   ; Salmo salar; anadromous fish; freshwater; survival rate;     Show all 5 Subjects
Abstract:
... There are strong signals that the selection forces favouring the expression of long‐distance sea migration by Atlantic salmon (Salmo salar) are changing. Unlike many other behavioural traits, the costs of migration are incurred before any fitness benefits become apparent to the migrant. The expression of this behaviour has thus been shaped by selection forces over multiple generations and cannot r ...
DOI:
10.1111/jfb.15024

17. Eco‐evolutionary dynamics of interference competition

Author:
Gregory F. Grether; Kenichi W. Okamoto
Source:
Ecology letters 2022 v.25 no.10 pp. 2167-2176
ISSN:
1461-023X
Subject:
population size,   etc   ; extinction; genetic variation; models; natural selection; territoriality;     Show all 6 Subjects
Abstract:
... Theorists have identified several mechanisms through which species that compete exploitatively for resources could coexist. By contrast, under the current theory, interference competitors could coexist only in rare circumstances. Yet, some types of interference competition, such as interspecific territoriality, are common. This mismatch between theory and nature inspired us to model interference c ...
DOI:
10.1111/ele.14091

18. Responses of Housing Price under Different Directions of Population Change: Evidence from China’s Rust Belt

Author:
He Li; Xiaoxuan Liang
Source:
Chinese geographical science 2022 v.32 no.3 pp. 405-417
ISSN:
1002-0063
Subject:
population size,   etc   ; issues and policy; population growth; prices; shrinkage; China;     Show all 6 Subjects
Abstract:
... Population growth has been widely regarded as an important driver of surging housing prices of urban China, while it is unclear as yet whether population shrinkage has an impact on housing prices that is symmetrical with that of population growth. This study, taking 35 sample cites in Northeast China, the typical rust belt with intensifying population shrinkage, as examples, provides an empirical ...
DOI:
10.1007/s11769-021-1248-y

19. Sustainable biochar-based soil fertilizers and amendments as a new trend in biochar research

Author:
Aleksandra Rombel; Patrycja Krasucka; Patryk Oleszczuk
Source:
Science of the total environment 2022 v.816 pp. 151588
ISSN:
0048-9697
Subject:
population size,   etc   ; biochar; composts; environment; pollution; raw materials; soil amendments;     Show all 7 Subjects
Abstract:
... Today's world is struggling with many environmental problems. Due to the ever-growing size of the population, it is necessary to produce more and more food. The consequence of such a large demand for food is excessive fertilization of soils, often in an uncontrolled manner. The paper presents an overview of the different types of biochar (BC) fertilizers obtained by: coating BCs with a protective ...
DOI:
10.1016/j.scitotenv.2021.151588

20. A preliminary analysis of the population genetic parameters indicates critically low genetic variation in a threatened killifish (Anatolichthys transgrediens)

Author:
Baran Yoğurtçuoğlu; Murat Yılmaz; Fitnat Güler Ekmekçi; Ergi Deniz Özsoy
Source:
Journal of applied ichthyology 2022 v.38 no.1 pp. 28-33
ISSN:
0175-8659
Subject:
population size,   etc   ; allozymes; endangered species; genetic variation; ichthyology; population structure;     Show all 6 Subjects
Abstract:
... Levels of genetic variation can steer the future adaptability and correlate to reduced inbreeding of species. Therefore, for any conservation measure, determining the levels of genetic variations and its implications in endangered species is a priority. Here, we investigate allozyme genetic variation of a critically endangered killifish species, Anatolichthys transgrediens, one of the most threate ...
DOI:
10.1111/jai.14289