Results 11 to 20 of about 265,190 (157)

Measuring maternal line selection driven by differential survival in ex situ collections for plant conservation. [PDF]

Conserv Biol
Abstract Ex situ plant collections may be increasingly needed to protect representative samples of threatened or rare species and provide plant material for conservation translocation. A primary problem in these ex situ collections is loss of intraspecific variation due to plant death. Different management actions would be required depending on whether
Sucher R, AuBuchon-Elder T, Thomas G, Collins M, Rea A, Martin L, Jiménez I.   +6 more
europepmc   +2 more sources

The frequency and importance of polyploidy in tropical rainforest tree radiations. [PDF]

New Phytol
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Schley RJ, Piñeiro R, Nicholls JA, Gaynor ML, Lewis GP, Fonseca Pezzini F, Dexter KG, Kidner C, Pennington RT, Twyford AD.   +9 more
europepmc   +2 more sources

Quality of government and women's political empowerment: Evidence from European regions

Papers in Regional Science, Volume 102, Issue 6, Page 1067-1096, December 2023., 2023
Abstract This study examines the relationship between women's political empowerment (WPE) and the quality of government (QoG) in European regions. The analysis considers both the endogeneity of the QoG and female empowerment, and their spatial interdependence.
Vicente Rios, Mercedes Beltrán‐Esteve, Lisa Gianmoena, Jesús Peiró‐Palomino, Andrés J Picazo‐Tadeo   +4 more
wiley   +1 more source

Fragmentation effects on an endangered species across a gradient from the interior to edge of its range

Conservation Biology, Volume 37, Issue 5, October 2023., 2023
Abstract Understanding how habitat fragmentation affects individual species is complicated by challenges associated with quantifying species‐specific habitat and spatial variability in fragmentation effects within a species’ range. We aggregated a 29‐year breeding survey data set for the endangered marbled murrelet (Brachyramphus marmoratus) from >42 ...
Jonathon J. Valente, James W. Rivers, Zhiqiang Yang, S. Kim Nelson, Joseph M. Northrup, Daniel D. Roby, Carolyn B. Meyer, Matthew G. Betts   +7 more
wiley   +1 more source

Integrating presence‐only and presence–absence data to model changes in species geographic ranges: An example in the Neotropics

Journal of Biogeography, Volume 50, Issue 9, Page 1561-1575, September 2023., 2023
Abstract Aim Anthropogenic changes such as land use and climate change affect species' geographic ranges, causing range shifts, contractions, or expansions. However, data on range dynamics are insufficient, heterogeneous, and spatially and temporally biased in most regions.
Florencia Grattarola, Diana E. Bowler, Petr Keil   +2 more
wiley   +1 more source

An elevational gradient in floral traits and pollinator assemblages in the Neotropical species Costus guanaiensis var. tarmicus in Peru

Ecology and Evolution, Volume 13, Issue 8, August 2023., 2023
We analyzed floral traits and pollinator assemblages in the Neotropical species Costus guanaiensis var. tarmicus along a steep elevational gradient in Peru. Results show floral traits and pollinator assemblage variation along the elevational gradient. We examined our results considering two hypotheses: (1) local adaptation to different bee assemblages ...
Rossana Maguiña‐Conde, Dorali Zuñiga‐Rivas, Kathleen M. Kay   +2 more
wiley   +1 more source

Seasonality regulates the structure and biogeochemical impact of ectomycorrhizal fungal communities across environmentally divergent neotropical dry forests

Journal of Ecology, Volume 111, Issue 8, Page 1598-1613, August 2023., 2023
These results highlight the importance of seasonality and plant community composition in shaping different aspects of SDTF ECM fungal community structure and diversity as well as the potential for both the plant and fungal components of ECM symbioses to impact soil functioning across heterogenous SDTFs.
Katilyn V. Beidler, Jennifer S. Powers, Juan M. Dupuy‐Rada, Catherine Hulshof, David Medvigy, Camila Pizano, Beatriz Salgado‐Negret, Skip J. Van Bloem, German Vargas G, Bonnie G. Waring, Peter G. Kennedy   +10 more
wiley   +1 more source

Prevalence of adenomyosis in women with subfertility: systematic review and meta‐analysis

Ultrasound in Obstetrics &Gynecology, Volume 62, Issue 1, Page 23-41, July 2023., 2023
ABSTRACT Objective To determine the prevalence of adenomyosis in women with subfertility. Methods A systematic search was conducted in MEDLINE, EMBASE, CINAHL Plus, Google Scholar, PsycINFO and Web of Science Core Collection from database inception to October 2022. The included studies evaluated the prevalence of adenomyosis in women with subfertility,
I. Mishra, P. Melo, C. Easter, V. Sephton, R. Dhillon‐Smith, A. Coomarasamy   +5 more
wiley   +1 more source

Chilean bee diversity: Contrasting patterns of species and phylogenetic turnover along a large‐scale ecological gradient

Ecosphere, Volume 14, Issue 5, May 2023., 2023
Abstract Chile's isolation and varied climates have driven the evolution of a unique biodiversity with a high degree of endemism. As a result, Chile encompasses diverse environments, including the Mediterranean‐type ecosystem, a global biodiversity hotspot.
Leon Marshall, John S. Ascher, Cristian Villagra, Amaury Beaugendre, Valentina Herrera, Patricia Henríquez‐Piskulich, Alejandro Vera, Nicolas J. Vereecken   +7 more
wiley   +1 more source

Metodología para la zonificación agroclimática de la región de La Mojana mediante el sistema de información geográfica ARC/Info

Ciencia y Tecnología Agropecuaria, 1998
El estudio desarrolló una metodología objetiva de zonificación agroclimática mediante el uso del sistema de información geográfica (SIG) ARC/Info®.
Carlos Terán, Carlos Jimenez, Carlos González, Edgar Villaneda   +3 more
doaj   +1 more source