Results 121 to 130 of about 26,306 (234)

Reestablishment of Zamia lawsoniana (Zamiaceae, Cycadales), an endemic species of Mexico, with first description of the ovulate strobilus

open access: yesActa Botanica Mexicana
Background and Aims: Zamia, with 86 species, is the most diverse Neotropical cycad genus. In Mexico, 18 species occur, of which 15 are endemics. These taxa are distributed from sea level to 1200 m a.s.l.
Fernando Nicolalde-Morejón   +3 more
doaj   +1 more source

Natural Areas and Reference Collections for Environmental Education in Some Arkansas Schools [PDF]

open access: yes, 1973
A survey of 20 school campuses throughout Arkansas showed that most lack natural areas for outdoor environmental education. For most Arkansas schools no checklists of local plants are available, and there are no reference collections at the schools ...
Moore, Jewel E.
core   +2 more sources

Loss of qE Does Not Necessarily Lead to Photoinhibition: Sustained Non‐Photochemical Quenching in the Absence of PsbS and Zeaxanthin

open access: yesPlant, Cell &Environment, Volume 49, Issue 6, Page 3405-3425, June 2026.
ABSTRACT Photosynthetic light‐harvesting complexes mediate light absorption and energy dissipation. By modulating the photosystems' absorption cross‐section, they affect both photosynthetic activity and non‐photochemical quenching (NPQ). These processes are often studied by spectrally integrated chlorophyll fluorescence, masking their associated ...
Maximiliano Cainzos   +5 more
wiley   +1 more source

Separated Sexes, Shared Consequences: Disentangling Predictors of Genetic Diversity in Dioecious Angiosperms

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
This study evaluates the factors influencing intrapopulation genetic diversity in dioecious flowering plants by integrating genetic and ecological data from studies published up to 2025. We show that pollination mode, endemism, and conservation status significantly shape genetic diversity patterns, with endemic and threatened species exhibiting the ...
Thais Martins Teixeira   +1 more
wiley   +1 more source

Characterization of the Wild Trees and Shrubs in the Fergana Valley: Diversity and Distribution, Threats

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
The content of this paper is significant because it presents the first comprehensive assessment of the dendroflora of the Fergana Valley, contributes to understanding species richness across biogeographic regions, and places the results in the context of Central Asian flora and global biodiversity studies.
Nazokat Daminova   +7 more
wiley   +1 more source

Structures of variants of Escherichia coli flavodiiron‐type nitric oxide reductase reveal changes in the di‐iron site

open access: yesActa Crystallographica Section D, Volume 82, Issue 5, Page 457-470, May 2026.
Flavodiiron proteins (FDPs) are di‐iron enzymes that reduce NO and/or O2 with distinct substrate selectivity. We have produced E. coli FDP variants targeting second coordination‐sphere residues and determined their structures. Although the kinetics remained unchanged, the E.
Patrícia T. Borges   +8 more
wiley   +1 more source

The evolutionary history of the ancient weevil family Belidae (Coleoptera: Curculionoidea) reveals the marks of Gondwana breakup and major floristic turnovers, including the rise of angiosperms

open access: yeseLife
The rise of angiosperms to ecological dominance and the breakup of Gondwana during the Mesozoic marked major transitions in the evolutionary history of insect-plant interactions.
Xuankun Li   +11 more
doaj   +1 more source

Review: Effect of global warming on plant evolution and diversity; lessons from the past and its potential recurrence in the future [PDF]

open access: yes, 2009
Abstrak. Setyawan AD. 2009. Pengaruh pemanasan global terhadap evolusi dan keanekaragaman tumbuhan; pelajaran dari masa lalu dan kemungkinan terulangnya kembali di masa depan. Nusantara Bioscience 1: 43-52.
SETYAWAN, AHMAD DWI
core   +2 more sources

Notes on Gymnosperms

open access: yesBotanical Gazette, 1916
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Forest composition and diversity buffer microclimates and enhance productivity

open access: yesJournal of Ecology, Volume 114, Issue 5, May 2026.
The findings show that tree diversity and the proportion of fast‐growing, early successional tree species can increase canopy cover and buffer the microclimates of young forests, benefiting the physiology and productivity of slower‐growing, shade‐tolerant tree species.
Maria H. Park   +4 more
wiley   +1 more source

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