Results 91 to 100 of about 72,961 (216)

Degradação de pastagens na Região Amazônica: propriedades físicas do solo e crescimento de raízes Pasture degradation in the Amazon region: soil physical properties and root growth

open access: yesPesquisa Agropecuária Brasileira, 2001
O objetivo deste trabalho foi avaliar: (i) a relação entre a degradação de pastagens de colonião manejadas com queima, e as modificações nas propriedades físicas e morfológicas de um Argissolo Vermelho-Amarelo da Amazônia; (ii) o crescimento radicular de
Marcelo Marques Lopes Muller   +3 more
doaj   +1 more source

New Insights Into the Distribution of Australian Butterflies (Lepidoptera: Papilionoidea) Provided by Citizen Science

open access: yesAustral Entomology, Volume 65, Issue 2, May 2026.
ABSTRACT Butterflies are one of Australia's most popular and well‐studied invertebrate groups. Much butterfly research in the country is either led or supported by amateur entomologists and citizen scientists, and yet despite this, the recent and dramatic increase in the volume of publicly accessible citizen science butterfly observations has received ...
Louis J. Backstrom
wiley   +1 more source

Feed Intake and Growth Performance of Vietnamese Yellow Calves Fed Silages from Intercropped Maize–Soybean and Guinea Grass

open access: yesRuminants
Combining soybeans with grass or biomass maize in silage holds promise in addressing the nutritional limitations of individual crops, providing a roughage with a good energy–protein balance. This study evaluated the effects of replacing urea-treated rice
Don V. Nguyen   +5 more
doaj   +1 more source

Identification and Control of Johnsongrass, Vaseygrass, and Guinea Grass in Pastures

open access: yesEDIS, 2012
Johnsongrass is a common weed throughout the South and Midwest. People often incorrectly call any weed johnsongrass, but it is one of three grasses found in Florida pastures. Knowing the differences between johnsongrass, vaseygrass, and guinea grass will
Hunter Smith   +2 more
doaj   +1 more source

‘Missing persons’: Ancient legacies of human–environment interaction in tropical natural properties inscribed under the 1972 World Heritage Convention

open access: yesArchaeometry, Volume 68, Issue S2, Page S9-S30, May 2026.
Abstract Cultural and natural values form the core of World Heritage designation. Properties displaying both values, however, comprise a fraction of inscriptions (currently c. 3%) to the World Heritage List. In 1992, when that fraction stood at c. 5%, adoption of the popular ‘cultural landscapes’ category of cultural heritage in 1992 was therefore ...
Ryan J. Rabett
wiley   +1 more source

A role for epithelium‐derived 6‐nitrodopamine on human ureter contractility

open access: yesBritish Journal of Pharmacology, Volume 183, Issue 10, Page 2360-2375, May 2026.
Abstract Background and Purpose To investigate the basal release of 6‐nitrodopamine (6‐ND) from human isolated ureter and the role of this novel catecholamine in the ureter contractility. Experimental Approach Ureters from 67 brain‐dead organ donors (40 males and 27 females) were used during kidney transplantation procedures.
Wilmar Azal Neto   +12 more
wiley   +1 more source

Distribution patterns, weed incursions and origins of terrestrial flora at the Capricorn-Bunker Islands, Great Barrier Reef, Australia [PDF]

open access: yes, 2013
A checklist of vascular plants of the 15 Capricorn-Bunker Islands (CBI) (lat 23° 11’ to 24° 07’S; long 151° 43’ to 152° 43’E) compiled from 2007/08 surveys, recorded 131 vascular plant species including 44 (34%) native and 87 (66%) naturalized species ...
Batianoff, George N.   +3 more
core  

Species abundance patterns in an ecosystem simulation studied through Fisher's logseries [PDF]

open access: yes, 2010
We have developed an individual-based evolving predator-prey ecosystem simulation that integrates, for the first time, a complex individual behaviour model, an evolutionary mechanism and a speciation process, at an acceptable computational cost.
Agrell   +64 more
core   +3 more sources

Producción de semilla de guinea (Panicum maximum Jacq.) en un sistema intensivo de ceba de ganado vacuno Seed production of Guinea grass (Panicum maximum Jacq.) in an intensive cattle fattening system

open access: yesPastos y Forrajes, 2008
En un suelo Pardo sialítico del subtipo Cambisol cálcico, localizado en la Empresa Pecuaria «Calixto García», en la provincia de Holguín, se estudio la producción de semilla de guinea (Panicum maximum Jacq.) en un sistema intensivo de ceba de ganado ...
G Oquend   +9 more
doaj  

Nutritional evaluation of sole and mixed guinea grass and ginger lily silages

open access: yesAfrican and Mediterranean Agricultural Journal - Al Awamia
The effects of ensiling sole and mixed guinea grass (Panicum maximum) and ginger lily (Costus afer) silages on the physical and chemical composition were investigated. Four silage-based experimental treatments consisting of T1 (100% guinea grass), T2 (60%
Boma Victor Iriso   +1 more
doaj   +1 more source

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