Results 121 to 130 of about 44,348 (282)

Seasonal Forestry Archetype

open access: yesARQ
The Seasonal Forestry Archetype proposes an alternative, community-oriented approach to forestry in Ucayali, integrating wood processing plants with local communities.
Maryhori Quispe Castillo
doaj   +1 more source

Oxidative Stress Biomarkers in the Shrimp Macrobrachium amazonicum (Heller, 1862): Assessment in an Environmental Preservation Area in the Brazilian Amazon

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Anthropogenic activities generate a significant amount of pollutants that are released into the environment, causing physiological and ecological disturbances. Among the xenobiotics present in aquatic ecosystems, numerous chemical and organic compounds have oxidative potential or are metabolized through oxidative processes, which may amplify ...
Natália Eduarda da Silva   +6 more
wiley   +1 more source

Shamans’ gardens: sites of creative equivocation between Indigenous and internationalized ayahuasca shamanism

open access: yesJournal de la Société des Américanistes
If ayahuasca shamanism is now well studied, the medicinal plant gardens that form a standard element of ayahuasca centers have received less attention.
Françoise Barbira-Freedman   +1 more
doaj   +1 more source

About the relationship between the zooplankton and fluctuating water levels of Lago Camaleão, a Central Amazonian várzea lake

open access: yes, 1984
A two-year study of the composition and abundance of the zooplankton was conducted in an Amazonian vãrzea lake, Lago Camaleão. Rotifers were dominant in terms of both species numbers and density.
Hardy, E., Koste, W., Robertson, B.
core  

Space, Time and Nature: The process and the myth [PDF]

open access: yes, 2015
The article fits into the debate regarding space, time and nature in dialogue with the world lived by subjects that build up themselves or are built as mythological heroes, source of speech and spacial concrete practices.
Araújo, Maxem Luiz   +3 more
core  

First Non‐Invasive Monitoring of Fecal Steroids in Greater Caribbean Manatees (Trichechus manatus manatus)

open access: yesZoo Biology, EarlyView.
This study established the first fecal hormonal reference values (P4/E2) for the Greater Caribbean manatee. Using non‐invasive ELISA, the authors found no significant differences between mature and immature females, highlighting that long‐term monitoring and ultrasounds are essential to fully understand their complex reproductive cycles.
Vanessa Bermúdez‐Cardona   +3 more
wiley   +1 more source

Bee community assembly is regulated by functional traits in pristine tropical forest environments

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding the drivers of bee beta diversity across pristine environments in the Amazon is critical for ensuring biodiversity conservation, restoration, sustainable land use planning and economic development.
Rafael Cabral Borges   +7 more
wiley   +1 more source

TRY plant trait database - enhanced coverage and open access [PDF]

open access: yes, 2020
Plant traits-the morphological, anatomical, physiological, biochemical and phenological characteristics of plants-determine how plants respond to environmental factors, affect other trophic levels, and influence ecosystem properties and their benefits ...
Aakala, T   +727 more
core  

Repeated trends in altitudinal gradients of diversity: How habitat filtering and biotic interactions structure ecological communities

open access: yesJournal of Animal Ecology, EarlyView.
This study reveals that tropical butterfly communities show remarkably consistent elevational patterns of diversity and phylogenetic structure across regions with contrasting evolutionary histories, demonstrating how regional species pools and local ecological factors jointly shape biodiversity along altitudinal gradients.
Raphaël Fougeray   +10 more
wiley   +1 more source

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