Results 81 to 90 of about 7,101 (245)

Disponibilidad mensual de fitomasa aérea total y en distintos compartimentos de un pastizal bajo en la región de colinas de La Pampa

open access: yesSemiárida, 2020
El trabajo fue realizado en un pastizal bajo, en la región de las colinas de La Pampa (Dpto. Toay), para determinar disponibilidad total aérea y de los distintos compartimentos.
G. Carreira, M. Fernández, H. Petruzzi
doaj  

Scientists’ warning on the global destruction of rock outcrop ecosystems

open access: yesConservation Biology, EarlyView.
Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula   +19 more
wiley   +1 more source

Disponibilidad forrajera en un arbustal de Larrea divaricata en el sudeste DE La Pampa, Argentina

open access: yesSemiárida, 2020
Este trabajo se hizo en un arbustal de Larrea divaricata con un estrato de gramíneas bajas, en el sudeste de La Pampa. Se determinó fitomasa aérea, cobertura y frecuencia de todas las especies, cuatro veces en el año.
E. Cano, H. D. Estelrich, B. Fernández
doaj  

Caracterización de la ecología en estudiantes de quinto grado durante una práctica sobre célula vegetal

open access: yes, 2006
RESUMEN : En este trabajo se presenta el informe de una investigación tendiente a caracterizar la ecología conceptual de un estudiante de quinto grado en la institución Educativa Normal Superior de Envigado, durante el desarrollo de una práctica de ...
Jaramillo Usme, Jhon Alexander
core  

Ecological and functional effects of habitat conversion and seasons on fruit‐feeding butterfly assemblages in tropical dry forests Efeitos ecológicos e funcionais da conversão do habitat e da sazonalidade sobre assembleias de borboletas frugívoras em florestas tropicais secas

open access: yesEcological Entomology, EarlyView.
Land‐use change and seasonality shape the taxonomic, functional and phylogenetic diversity of fruit‐feeding butterflies in tropical dry forests. Pastures reduce phylogenetic diversity and increase wing fluctuating asymmetry, while taxonomic and functional diversity is greater in the wet season than in the dry season.
João Rafael S. Macêdo   +8 more
wiley   +1 more source

Determinación de proteína bruta de algunas especies forrajeras de La Pampa

open access: yesSemiárida, 2020
Este trabajo se realizó en tres pastizales diferentes de la provincia de La Pampa. El primero ubicado en la Ea. La Mercedes, Depto. Toay, presenta dominancia de Digitaria californica, especie de verano en la que se obtuvo 14,4% de PB.
C. C. Chirino   +2 more
doaj  

Spiders in the mosaic: How habitat heterogeneity and structure drive local spider diversity in a Mediterranean forest

open access: yesEcological Entomology, EarlyView.
We assessed alpha‐ and beta‐diversity patterns of spiders across different forests and across vegetation layers (ground, shrub, low canopy) at local spatial scales across various Mediterranean forest types. Across forests, alpha‐diversity increased with habitat heterogeneity, which also drove beta‐diversity patterns across plots .
Manuel Marquerie‐Córdoba   +8 more
wiley   +1 more source

Relevamiento fitosociológico del parque nacional Lihue Calel, La Pampa, Argentina

open access: yesSemiárida, 2020
El Parque Nacional Lihue Calel está ubicado en el centro de La Pampa (long. 65°39' W y 65° 33' W, lato 37° 54' S Y 38° 05' S). El clima es templado semiárido. con precipitaciones anuales de 400 mm. La textura del suelo es franco-arenosa, arenosa-franca y
M. I. Zabalza, J. C. Barreix, E. Cano
doaj  

She Doesn't Whisper: Female‐Prominent Stridulation Shaped by Morphology in a Buthid Scorpion and Insights on Its Function

open access: yesEthology, EarlyView.
Sexual dimorphism and stress‐induced stridulatory responses in Jaguajir rochae (Borelli, 1910). Females exhibited greater absolute pectinal size and higher sound pressure levels, whereas males showed higher pectinal allometric ratios relative to body size, lower sound frequencies, and shorter delta times.
Welton Dionisio‐da‐Silva   +4 more
wiley   +1 more source

Germination Success and Seedling Development of under Different Climatic Conditions and Browsing Intensity

open access: yesNatural Product Communications, 2013
The present study assesses whether the germination and establishment success of Argania spinosa seeds are affected by the environmental conditions under which the mother plant has grown. Seeds from three populations with different climatic conditions and
María Zunzunegui   +5 more
doaj   +1 more source

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