Results 31 to 40 of about 16,277 (263)

Recovery of above-ground tree biomass after moderate selective logging in a central Amazonian forest

iForest - Biogeosciences and Forestry, 2018
We examined the recovery and dynamics of living tree above-ground biomass (AGB) after selective logging in an Amazonian terra firme forest managed by a private company.
Otani T, Lima AJN, Suwa R, Amaral MRM, Ohashi S, Pinto ACM, Dos Santos J, Kajimoto T, Higuchi N, Ishizuka M   +9 more
doaj   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

The Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga, Verônica Oliveira‐Bahia, Maria Auxiliadora Ferreira, José Ribamar Felipe Marques, Diva Araújo Guimarães   +4 more
wiley   +1 more source

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

The Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga, Grazyelle Sebrenski da Silva, Maria Inês Braga de Oliveira, Jaydione Luiz Marcon, Ruben Dario Morales Gamba   +4 more
wiley   +1 more source

Etnomapeamento de roças indígenas em ilhas de mata no lavrado de Roraima, extremo norte da Amazônia

Ambiente
Na região da savana de Roraima (chamada de “lavrado”), onde predomina a vegetação herbácea, as roças indígenas são instaladas em áreas de vegetação florestal, restritas ao entorno de cursos d´água ou fragmentos denominados “ilhas de mata”, onde também ...
Rachel Pinho, Arthur Camurça Citó, Thiago Orsi Laranjeiras, Pedro Aurélio Costa Lima Pequeno, Sonia Sena Alfaia, Reinaldo Imbrozio Barbosa   +5 more
doaj   +1 more source

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

Archaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban, Rolando Salas López, Angel J. Medina‐Medina, Katerin M. Tuesta‐Trauco, Abner S. Rivera‐Fernandez, Nerci M. Noriega‐Salazar, José A. Sánchez‐Vega, Teodoro B. Silva‐Melendez, Marlen A. Grandez‐Alberca, Jhonsy O. Silva‐López, Nilton B. Rojas‐Briceño, Manuel Oliva‐Cruz, Alexander Cotrina‐Sanchez, Elgar Barboza   +13 more
wiley   +1 more source

Exploring new avenues: Psychedelic‐assisted therapy for young people

British Journal of Clinical Pharmacology, EarlyView.
Rates of mental illness in young people are increasing, whereas the development of novel mental health treatments has not significantly progressed. Psychedelic‐assisted therapy, using substances such as psilocybin and 3,4‐methylenedioxymethamphetamine (MDMA), has shown potential in the treatment of mental illnesses in the adult population, including ...
Ioanna Artemis Vamvakopoulou, Dasha Nicholls, David J. Nutt, Martina Di Simplicio   +3 more
wiley   +1 more source

Impact of forest concessions on local jobs in central amazon

Trees, Forests and People, 2020
In the humid tropics, forest concessions have become the main mechanism of access to public forest resources. In Brazil, forest concessions began in 2006 with the creation of local jobs as one of its assumptions.
Jime Rodrigues Ribeiro, Claudia Azevedo-Ramos, Ricardo Bruno Nascimento dos Santos   +2 more
doaj   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

Cascade of flight interception traps for large scale exploration of the otherwise unreachable canopy insect fauna

Scientific Reports
We present here an efficient system of flight intercept traps developed to be set at the forest structure in tropical or temperate environments to assess the vertical structure of the insect fauna, including the ground level and the canopy at different ...
José A. Rafael, Francisco Limeira-de-Oliveira, Ismael B. Oliveira, Sheila P. Lima, Alice Tôrres, Daniell R. R. Fernandes, Dalton S. Amorim   +6 more
doaj   +1 more source

Changes in Soil-Borne Communities of Arbuscular Mycorrhizal Fungi during Natural Regrowth of Abandoned Cattle Pastures Are Indicative of Ecosystem Restoration

Agronomy, 2021
Natural restoration of ecosystems includes the restoration of plant-microbial associations; however, few studies had documented those changes in tropical ecosystems.
Carlos H. Rodríguez-León, Clara P. Peña-Venegas, Armando Sterling, Herminton Muñoz-Ramirez, Yeny R. Virguez-Díaz   +4 more
doaj   +1 more source