Results 11 to 20 of about 226,941 (169)

Drying suppresses fine root production to 1 m depths and alters root traits in four distinct tropical forests. [PDF]

New Phytol
Summary Drying and drought in tropical forests, which have some of the highest net primary productivity on Earth, are likely to alter root dynamics, ecosystem function, and carbon (C) storage. We used a chronic drying experiment in four lowland Panamanian forests to investigate whether soil drying shifts tropical forest root production from surface to ...
Cordeiro AL, Cusack DF, Dietterich LH, Valdes E, Gonçalves NB, Oliveira M, Quesada-Ávila G, Wright SJ.   +7 more
europepmc   +2 more sources

Abundance, Diversity and Phenology of Mosquito Larvae in a Highly Anthropized Wetland: Health and Management Implications of Gándaras de Budiño (NW Spain). [PDF]

Ecol Evol
The natural and anthropized wetland of Gándaras de Budiño (Galicia, Spain) hosts a great number of mosquito species. Culex pipiens s.l. and Culex torrentium pose an emerging risk for West Nile virus transmission. The temporary and polluted waters, as well as the summer and spring seasons, favor the larval proliferation of these vectors.
Martínez-Barciela Y, Polina A, Garrido J.   +2 more
europepmc   +2 more sources

Effects of interactions between anthropogenic stressors and recurring perturbations on ecosystem resilience and collapse. [PDF]

Conserv Biol, 2023
Abstract Insights into declines in ecosystem resilience and their causes and effects can inform preemptive action to avoid ecosystem collapse and loss of biodiversity, ecosystem services, and human well‐being. Empirical studies of ecosystem collapse are rare and hampered by ecosystem complexity, nonlinear and lagged responses, and interactions across ...
Keith DA, Benson DH, Baird IRC, Watts L, Simpson CC, Krogh M, Gorissen S, Ferrer-Paris JR, Mason TJ.   +8 more
europepmc   +2 more sources

Microbial drivers of root plasticity. [PDF]

New Phytol
Summary Soils are highly heterogeneous and dynamic systems, experiencing a constant flow of plant root exudates and moisture fluctuations that affect nutrient distribution, soil physicochemical properties, and microbial metabolisms. Plant roots adjust their development within the soil matrix (growth, branching, root angle, and anatomical features) by ...
Dini-Andreote F, Wells DM, Atkinson JA, Atkinson BS, Finkel OM, Castrillo G.   +5 more
europepmc   +2 more sources

Calibración de dos sensores capacitivos de humedad en un Ultisol

Dyna, 2020
Los objetivos de este estudio fueron realizar la calibración y determinar las ecuaciones de calibración de dos sensores de humedad de suelo ECH2O para un suelo Ultisol colectado en el Municipio de Pesqueira-PE, localizado en el Semiárido Brasileño.
Anabel de los Ángeles Calva Jiménez, Ceres Duarte Guedes Cabral de Almeida, Jose Amilton Santos Junior, Célia Silva dos Santos   +3 more
doaj   +1 more source

Análisis sobre la influencia de la densidad en la termografía de infrarrojos y el alcance de esta técnica en la detección de defectos internos en la madera [PDF]

, 2012
This paper shows the results of a laboratory phase for the determination of the 1limits of infrared thermography in detecting internal defects in wood and, furthermore, it analyses how the density of this material can influence the surface ...
Morales Conde, María Jesús, Pérez Gálvez, Filomena, Rodríguez-Liñán, Carmen, Rubio de Hita, Paloma   +3 more
core   +3 more sources

Correlación del CBR con la resistencia a la compresión inconfinada

Ciencia e Ingeniería Neogranadina, 2019
Los espesores y propiedades de las capas de una estructura de pavimento son altamente determinados por la rigidez de la subrasante. En algunos casos, no es posible la ejecución de pruebas directas para determinar dicha rigidez, al menos en la frecuencia ...
Eimar Andrés Sandoval-Vallejo, William Albeiro Rivera-Mena   +1 more
doaj   +1 more source

ESTUDIO FÍSICO-MECÁNICO Y TÉRMICO DE UNA RESINA NATURAL MOPA-MOPA ACONDICIONADA A DIFERENTES HUMEDADES RELATIVAS

Biotecnología en el Sector Agropecuario y Agroindustrial, 2013
En este trabajo se estudiaron las propiedades físico-químicas, térmicas y mecánicas de la resina Mopa-Mopa (MM), también conocida como barniz de pasto, extraída de la yema de la planta elaeagia pastoensis Mora. El proceso de extracción del material se llevó a cabo mediante de una lixiviación en caliente, empleando etanol como disolvente. A partir de la
Mina, Jose Herminsul, Toro, Fernando, Bolaños, Carlos Andres   +2 more
openaire   +5 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

Forest disturbance and recovery in Peruvian Amazonia

Global Change Biology, Volume 29, Issue 13, Page 3601-3621, July 2023., 2023
This study used Landsat time series in combination with data from 1840 National Forest Inventory plots in Peruvian Amazonia to determine the impact of disturbance, environmental conditions and human use on forests' biomass and tree diversity. We found that the intensity of forest disturbance had a negative effect on the recovery of aboveground biomass ...
Daniela Requena Suarez, Danaë M. A. Rozendaal, Veronique De Sy, Mathieu Decuyper, Natalia Málaga, Patricia Durán Montesinos, Alexs Arana Olivos, Ricardo De la Cruz Paiva, Christopher Martius, Martin Herold   +9 more
wiley   +1 more source