Results 11 to 20 of about 216,069 (159)

Anexo: análisis de un vástago metálico del yacimiento prehistórico de Peña Parda (Laguardia-Álava) [PDF]

Cuadernos de Arqueología de la Universidad de Navarra, 2003
Se presenta el estudio metalográfico de un vástago metálico recuperado en el abrigo de Peña Parda (Laguardia, Álava), para determinar su composición química, que resulta mayoritariamente cobre.
Iñaki Yusta
doaj   +1 more source

Communities of endophytic fungi in a Puerto Rican rainforest vary along a gradient of disturbance due to Hurricane Maria. [PDF]

Ecol Evol, 2022
Even more than a year after the catastrophic passage of Hurricane Maria, communities of endophytic symbionts in a Puerto Rican rainforest bear a signature of forest disturbance. Abstract Increases in the frequency and intensity of hurricanes influence the structure, function, and resilience of Caribbean forests.
Colón Carrión N, Troche CL, Arnold AE.
europepmc   +2 more sources

Histological and Gene Expression Analyses of the Arm and Finger Macroglands of Two Hyloxalus Frogs (Dendrobatidae). [PDF]

Mol Ecol
ABSTRACT Chemical communication during courtship is well documented in salamanders and newts, but its role in frogs is less understood. In some Neotropical poison frogs, males exhibit specialised mucous glands (SMGs) in the hand integument that express high levels of sodefrin precursor‐like factors (SPFs), an amphibian pheromone. Some species also show
Abondano Almeida D, Anganoy-Criollo M, Grant T, Klimovych S, Schulte LM.   +4 more
europepmc   +2 more sources

Multidimensional Perspective on the Quality of Green Onion: Between the Visible, the Measurable, and the Perceived. [PDF]

Food Sci Nutr
This graphical abstract presents a five‐phase framework to define green onion quality by integrating literature evidence, physicochemical and bioactive data, digital trends, field damage observations, and consumer perception, providing a multidimensional and measurable quality assessment.
Castaño-Tarazona LW, Henao-Rojas JC, Ramírez-Gil JG.   +2 more
europepmc   +2 more sources

An arbuscular mycorrhiza from the 407-million-year-old Windyfield Chert identified through advanced fluorescence and Raman imaging. [PDF]

New Phytol
Summary Mycorrhizal associations between fungi and plants are a fundamental aspect of terrestrial ecosystems. Mycorrhizas occur in c. 85% of extant plants, yet their geological record remains sparse. Rare fossil evidence from early terrestrial environments offers crucial insights into these ancient symbioses, but visualizing fossil fungi at the ...
Strullu-Derrien C, Wightman R, McDonnell LP, Evans G, Fercoq FA, Kenrick P, Ferrari AC, Schornack S.   +7 more
europepmc   +2 more sources

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

Transdermal drug delivery in horses: An in vitro comparison of skin structure and permeation of two model drugs at various anatomical sites

Veterinary Dermatology, Volume 34, Issue 3, Page 235-245, June 2023., 2023
Background – Oral and parenteral drug delivery in horses can be difficult. Equine‐specific transdermal drug formulations offer improved ease of treatment; development of such formulations requires a deeper understanding of the structural and chemical tissue barrier of horse skin. Hypothesis/Objectives – To compare the structural composition and barrier
Samuel C. Bizley, Jayesh Dudhia, Roger K. W. Smith, Adrian C. Williams   +3 more
wiley   +1 more source

Floristic diversity, composition and dominance across Amazonian forest types respond differently to latitude

Journal of Biogeography, Volume 50, Issue 4, Page 685-698, April 2023., 2023
Abstract Aim The latitudinal biodiversity gradient is considered a first‐order biogeographical pattern for most taxonomic groups. Latitudinal variation in plant diversity is not always consistent, and this could be related to the particular characteristics of different forest types.
Julia G. de Aledo, Mara Paneghel, Luis Cayuela, Laura Matas‐Granados, Celina Ben Saadi, Norma Salinas, María de los Ángeles La Torre‐Cuadros, Roosevelt García‐Villacorta, Manuel J. Macía   +8 more
wiley   +1 more source

Pigment molecular composition reveals significant information for visual communication

Functional Ecology, Volume 36, Issue 11, Page 2756-2762, November 2022., 2022
Read the free Plain Language Summary for this article on the Journal blog. Abstract Melanins are the most common pigments in vertebrates and, as such, fufill multiple adaptive functions, including honest signalling. This is the case of male pied flycatchers Ficedula hypoleuca, whose dorsal plumage, composed of black and grey feathers pigmented by ...
Ismael Galván
wiley   +1 more source

Structural and compositional dimensions of phytochemical diversity in the genus Piper reflect distinct ecological modes of action

Journal of Ecology, Volume 110, Issue 1, Page 57-67, January 2022., 2022
Crude extract 1H NMR diversity synthesizes the compositional diversity and structural complexity of phytochemical mixtures. Plants can develop chemical diversity through different combinations of structural and compositional biosynthetic mechanisms; thus, methods incorporating both dimensions of phytochemical diversity can provide new theoretical ...
Casey S. Philbin, Lee A. Dyer, Christopher S. Jeffrey, Andrea E. Glassmire, Lora A. Richards   +4 more
wiley   +1 more source