Results 31 to 40 of about 385 (170)

Tracking the decline of first marriage in South Korea: Timing, quantum decline, and pandemic disruptions [PDF]

Demographic Research
BACKGROUND: In South Korea, where most births occur within marriage, the country’s record-low fertility has put renewed attention on the long-term decline in first marriage.
Sam Hyun Yoo
doaj   +1 more source

Sanitation felling against the European spruce bark beetle: A matter of intensity and forest type Tagli fitosanitari contro il bostrico tipografo: una questione di intensità e tipologia forestale

Agricultural and Forest Entomology, EarlyView.
We assess the effect of sanitation felling performed in 2022 in North‐Eastern Italy on bark beetle damage that occurred in 2023 across eight spruce forest types, as evaluated using multispectral satellite imagery. Bark beetle damage was reduced only at very high or very low sanitation felling rates.
Aurora Bozzini, Michele Missoni, Giacomo Santoiemma, Iris Bernardinelli, Rinaldo Comino, Massimo Faccoli   +5 more
wiley   +1 more source

Expected years ever married

Demographic Research, 2018
Background: In the second half of the 20th century, remarkable marriage changes were seen: a great proportion of never married population, high average age at first marriage, and large variance in first marriage timing.
Ryohei Mogi, Vladimir Canudas-Romo
doaj   +1 more source

Beyond spring season: An autumn observation of adult lumpsuckers (Cyclopterus lumpus) in coastal Norway Frøya archipelago raises questions on extended spawning activity

Journal of Fish Biology, EarlyView.
Abstract During snorkelling near Frøya, central Norway, on 6 October 2025, a pair of adult lumpsuckers (Cyclopterus lumpus) was observed engaged in apparent prespawning behaviour in shallow kelp habitat. Such activity is surprising, as the species is mainly considered a spring spawner throughout the eastern Atlantic and is the focus of a targeted ...
Ole Henriksen, Mikael van Deurs, Rasmus Jacobsen, Thomas Warnar, Yvette Heimbrand   +4 more
wiley   +1 more source

A new species of inseminating catfish of the genus Tympanopleura (Siluriformes: Auchenipteridae) from the Ituxi River, Amazon River basin, northern Brazil, revealed by integrative taxonomy

Journal of Fish Biology, EarlyView.
Abstract A new species of the genus Tympanopleura is described from the Iquiri River, a tributary of the Ituxi River, a right‐bank tributary to the Purus River, Amazon River, northern Brazil. The new species is distinguished from all its congeners by a combination of features, such as the presence of an intensely pigmented square‐shaped blotch on the ...
Frank Raynner V. Ribeiro, Cárlison Silva‐Oliveira, Valdenor Magalhães, Lucas Gama, Lúcia H. Rapp Py‐Daniel   +4 more
wiley   +1 more source

Historical Population Database of Transylvania. Sources, Particularities, Challenges, and Early Findings

Historical Life Course Studies, 2022
The Historical Population Database of Transylvania (HPDT) is a research tool for population studies developed since 2014 at the Centre for Population Studies in Cluj-Napoca, financed by an SEE-Norway Grant.
Luminița Dumănescu, Mihaela Hărăguș, Angela Lumezeanu, Elena Crinela Holom, Nicoleta Hegedűs, Daniela Mârza, Diana Covaci, Ioan Bolovan   +7 more
doaj   +1 more source

Return of the ants: investigating temporal and spatial patterns of ant colonization in unsealed schoolyards

Restoration Ecology, EarlyView.
Abstract Introduction Urban soil unsealing, the removal of impervious surface layers, is increasingly promoted as a habitat restoration strategy to enhance ecosystem resilience in cities. Yet, its potential to support soil biodiversity from the onset remains underexplored.
Robin Chevrel, Alan Vergnes, Pierre Jay‐Robert, Bernard Kaufmann, Louise Eydoux   +4 more
wiley   +1 more source

Do Family Changes Constitute a Comprehensive Demographic Shift? A Comparison of the Spatial Dynamics of Five Family Changes in Switzerland (1969–2023)

Tijdschrift voor Economische en Sociale Geografie, EarlyView.
Abstract Several theories have been proposed to explain the family changes that have occurred in Europe since the mid‐1960s. It is often assumed that as these changes occurred simultaneously; they have a common origin and represent the same demographic shift.
Adrita Banerjee, Yoann Doignon, Oumar Mbath, Amira Hamieh, Philippe Wanner   +4 more
wiley   +1 more source

Quality of demographic data in GGS Wave 1

Demographic Research, 2015
Background: A key feature of the Generations & Gender Programme (GGP) is that longitudinal micro-data from the Generations and Gender Surveys (GGS) can be combined with indicators from the Contextual Database (CDB) that provide information on the macro ...
Jorik Vergauwen, Jonas Wood, David De Wachter, Karel Neels   +3 more
doaj   +1 more source

Variations in Sexual Size Dimorphism in Two Anurans Along an Urbanization Gradient in Shanghai: Assessment of Rensch's Rule

Ecology and Evolution, Volume 16, Issue 6, June 2026.
ABSTRACT Variations in sexual size dimorphism (SSD) have important consequences for animal ecology, behavior, population dynamics, and the evolution of life‐history traits, and can be explained by many intraspecific and interpopulation hypotheses. Urbanization is an important factor that affects anuran phenotypic characteristics (including morphology),
Ben Li, Ningning Liu, Shurong Zhong, Tianhou Wang, Rongquan Zheng, Qing Song, Zhenghuan Wang, Wei Zhang   +7 more
wiley   +1 more source