Results 11 to 20 of about 3,028 (215)

Long-term fire and vegetation change in northwestern Amazonia. [PDF]

Biotropica, 2023
Forest plots in Amazonia are often assumed to be undisturbed, but recent work suggests that past people can affect modern vegetation composition in the form of ecological legacies. We investigated the past fire and vegetation history of the Yasuní Forest Dynamics plot and compared that to other forest plots in northwestern Amazonia.
Heijink BM, Mattijs QA, Valencia R, Philip AL, Piperno DR, McMichael CNH.   +5 more
europepmc   +2 more sources

Diversity and conservation status of palms (Arecaceae) in two hotspots of biodiversity in Colombia and Ecuador

Plants, People, Planet
Societal Impact Statement Palms provide vital plant resources and ecosystem services to people across the tropics. To improve conservation guidance, a “health check” of palms in two highly threatened biodiversity hotspots in Colombia and Ecuador was ...
Thomas L. P. Couvreur, Nayeli Jijon, Rommel Montúfar, Paula A. Morales‐Morales, Maria José Sanín, Juan Carlos Copete, Alix Lozinguez, Álvaro J. Pérez, Emily Beech   +8 more
doaj   +2 more sources

Not All Stress Is the Same: Variable Associations Between Psychosocial Stressors and Urinary Cortisol Rhythms in a Small-Scale Subsistence Society. [PDF]

Am J Hum Biol
ABSTRACT Objectives Dysregulations of the hypothalamic–pituitary–adrenal (HPA) axis have been linked to adverse health outcomes such as obesity, cardiovascular disease, and diabetes. While research on the HPA axis is growing, few studies have examined whether different types of stressors affect HPA functioning differently, and none have done so in ...
Jud DC, Baettig V, Colby AE, Debras C, Scaff C, Trumble BC, Hutchings L, Baumgarten MD, Ista AC, Jaeggi AV.   +9 more
europepmc   +2 more sources

Hybridization in palms (Arecaceae). [PDF]

Ecol Evol
Across the plant Tree of Life, hybridization has contributed to the formation of species complexes and biased our understanding of taxonomic diversity and phylogenetic relationship, palms included. To increase understanding, we explore hybridization in palms and test for ecological correlates of hybridization. We reveal that hybridization is not evenly
Bacon CD, Hill A.
europepmc   +2 more sources

The ecology of palm genomes: repeat-associated genome size expansion is constrained by aridity. [PDF]

New Phytol, 2022
Summary Genome size varies 2400‐fold across plants, influencing their evolution through changes in cell size and cell division rates which impact plants' environmental stress tolerance. Repetitive element expansion explains much genome size diversity, and the processes structuring repeat ‘communities’ are analogous to those structuring ecological ...
Schley RJ, Pellicer J, Ge XJ, Barrett C, Bellot S, Guignard MS, Novák P, Suda J, Fraser D, Baker WJ, Dodsworth S, Macas J, Leitch AR, Leitch IJ.   +13 more
europepmc   +2 more sources

Floral attraction and flower visitors of a subcanopy, tropical rainforest tree, Fontainea picrosperma. [PDF]

Ecol Evol, 2021
Pollinators beneath the rainforest canopy occupy a unique microclimate that is markedly different from the canopy environment that receives more light energy. We studied the floral attractants and floral visitors of a dioecious, subcanopy rainforest tree, Fontainea picrosperma (Euphorbiaceae), in northern Australia.
Grant EL, Wallace HM, Brooks PR, Burwell C, Reddell PW, Ogbourne SM.   +5 more
europepmc   +2 more sources

Genotyping-by-sequencing informs conservation of Andean palms sources of non-timber forest products. [PDF]

Evol Appl
Abstract Conservation and sustainable management of lineages providing non‐timber forest products are imperative under the current global biodiversity loss. Most non‐timber forest species, however, lack genomic studies that characterize their intraspecific variation and evolutionary history, which inform species' conservation practices.
Peñafiel Loaiza N, Chafe AH, Moraes R M, Oleas NH, Roncal J.   +4 more
europepmc   +2 more sources

Volatile Profile of Bee Pollens: Optimization of Sampling Conditions for Aroma Analysis, Identification of Potential Floral Markers, and Establishment of the Flavor Wheel. [PDF]

Food Sci Nutr
The study describes the aroma composition of bee pollens from Central and Eastern Europe. Each pollen possesses its own specific volatile profile, with a number of aroma‐active ingredients. Terpenoids are of great importance for the overall aroma of bee pollen. The results establish the flavor wheel suitable for the comprehensive sensory description of
Csóka M, Végh R, Sipos L.
europepmc   +2 more sources

Liliopsida, Arecaceae, Geonoma undata Klotzsch: range extension for Zulia state, Venezuela [PDF]

Check List, 2013
The occurrence of the palm Geonoma undata Klotzsch is registered for the first time for the state of Zulia, Venezuela, as result of a floristic survey made at Cerro Las Antenas, in the Serranía de Perijá.
Juan Arias, Fred Stauffer
doaj   +3 more sources

The legacy of human use in Amazonian palm communities along environmental and accessibility gradients

Global Ecology and Biogeography, Volume 32, Issue 6, Page 881-892, June 2023., 2023
Abstract Aim Palms are iconic and dominant elements of neotropical forests. In the Amazon region, palms have been used and managed by humans for food, material, medicine and other purposes for millennia. It is, however, debated to what extent the structure of modern palm communities reflects long‐term human modification.
Gabriela Zuquim, Mirkka M. Jones, Otso Ovaskainen, William Trujillo, Henrik Balslev   +4 more
wiley   +1 more source