Results 21 to 30 of about 3,711 (200)

Warming, drought, and disturbances lead to shifts in functional composition: A millennial‐scale analysis for Amazonian and Andean sites

open access: yesGlobal Change Biology, Volume 29, Issue 17, Page 4775-4792, September 2023., 2023
How do tropical forests respond to climate change and disturbances? Here, we assess changes in functional trait composition across 10,000 years in Amazonian and Andean forests, using eight fossil pollen records and data on functional traits. Changes in temperature and disturbances had strongest effect, indicating that increased temperature and ...
Masha T. van der Sande   +15 more
wiley   +1 more source

Fermentation‐mediated growth, signaling, and defense in plants

open access: yesNew Phytologist, Volume 239, Issue 3, Page 839-851, August 2023., 2023
Summary While traditionally considered important mainly in hypoxic roots during flooding, upregulation of fermentation pathways in plants has recently been described as an evolutionarily conserved drought survival strategy, with acetate signaling mediating reprograming of transcription and cellular carbon and energy metabolism from roots to leaves. The
Kolby J. Jardine, Nate McDowell
wiley   +1 more source

Small‐scale spatial variability of Technosol properties in a chronosequence of reclamation of dredged‐sediment landfills

open access: yesLand Degradation &Development, Volume 34, Issue 12, Page 3712-3727, 30 July 2023., 2023
Abstract Active reclamation is often necessary to ensure a transformation of mining waste into Technosols—“soils dominated or strongly influenced by human‐made material”—and restore its utility and environmental value. The objective of this study is to assess the spatial variation of the physicochemical properties relevant for reclamation and Technosol
Bibiana Betancur‐Corredor   +6 more
wiley   +1 more source

Effects of forest fragmentation on the vertical stratification of neotropical bats [PDF]

open access: yes, 2020
Vertical stratification is a key component of the biological complexity of rainforests. Understanding community- and species-level responses to disturbance across forest strata is paramount for evidence-based conservation and management.
Farneda, F   +4 more
core   +4 more sources

Flora da Reserva Ducke, Estado do Amazonas, Brasil: Hypericaceae

open access: yesHoehnea, 2018
RESUMO São apresentadas as espécies de Hypericaceae registradas para a Reserva Ducke, Estado do Amazonas, incluindo chave de identificação, descrições, ilustrações, comentários sobre distribuição geográfica e hábitats. A família está representada na área
Milena Ventrichi Martins   +2 more
doaj   +1 more source

Estômatos de Guttiferae. Estudo morfológico, dimensional e quantitativo [PDF]

open access: yesActa Amazonica, 1974
RESUMO Estudo morfológico, dimensional e quantitativo dos estômatos de trinta e sete espécies de Guttiferae, com vista à Taxonomia, sendo 26 da Amazônia, 10 extra-amazônicas e 1 introduzida e aclimatada no Brasil (Garcinia mangostana L.).
José Elias de Paula
doaj   +1 more source

Successional shifts in tree demographic strategies in wet and dry Neotropical forests

open access: yesGlobal Ecology and Biogeography, Volume 32, Issue 6, Page 1002-1014, June 2023., 2023
Abstract Aim Tropical forest succession and associated changes in community composition are driven by species demographic rates, but how demographic strategies shift during succession remains unclear. Our goal was to identify generalities in demographic trade‐offs and successional shifts in demographic strategies across Neotropical forests that cover a
Nadja Rüger   +24 more
wiley   +1 more source

Chemistry and biology of genusVismia [PDF]

open access: yesPharmaceutical Biology, 2012
Many herbal remedies have been employed in the treatment and management of various human ailments since the beginning of human civilization. Vismia is an extensive genus of the family Hypericaceae and consists of small trees inhabiting the tropical and subtropical regions of South and Central America.
Hussain H   +6 more
openaire   +2 more sources

Diverse anthropogenic disturbances shift Amazon forests along a structural spectrum

open access: yesFrontiers in Ecology and the Environment, Volume 21, Issue 1, Page 24-32, February 2023., 2023
Amazon forests are being degraded by myriad anthropogenic disturbances, altering ecosystem and climate function. We analyzed the effects of a range of land‐use and climate‐change disturbances on fine‐scale canopy structure using a large database of profiling canopy lidar collected from disturbed and mature Amazon forest plots.
Marielle N Smith   +51 more
wiley   +1 more source

In Vitro Inhibitory Activities against α-Glucosidase, α-Amylase, and Pancreatic Lipase of Medicinal Plants Commonly Used in Chocó (Colombia) for Type 2 Diabetes and Obesity Treatment

open access: yesScientia Pharmaceutica, 2023
Plant-based therapies are widely utilized for treating diseases in approximately 80% of the global population, including Colombia’s Chocó Department.
Kevin P. Lévuok-Mena   +2 more
doaj   +1 more source

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