Results 51 to 60 of about 3,011 (190)

Estimating red deer Cervus elaphus population density using drones in a steep and rugged terrain

Wildlife Biology, EarlyView.
Precise and accurate information about population density, crucial for wildlife management, is difficult to obtain for elusive species living in dense forests or steep and inaccessible terrain. Using unmanned aerial vehicles (UAVs), we developed a method for obtaining absolute population estimates of ungulates living in steep, rugged, and partly ...
Julie Bommerlund, Torbjørn Ergon, Simon Filhol, Atle Mysterud   +3 more
wiley   +1 more source

Effect of adding different levels of mugwort powder on fermentation quality of napier grass silage

Siliao yanjiu, 2023
The experiment was to study the effect of different dosages of Pennisetum Purpureum on fermentation quality of silage. The experiment was divided into five groups.
XU Liu-xing, LIN Li-ting, WU Dan, XU Qing-biao, CHEN Li-li, ZHANG Jian-guo   +5 more
doaj  

Canonical correlations in elephant grass for energy purposes

African Journal of Biotechnology, 2014
Elephant grass has the potential to be used as a source for energy production. Besides dry matter yield, other characteristics related to biomass quality are important. The canonic correlation analysis is a multivariate statistical procedure that allows for discovering characteristic associations among groups.
Rossi, DA, Menezes, BR da Silva, Daher, RF, Gravina, G de Amaral, Nunes de Lima, RS, Ledo, FJ da Silva, Gottardo, RD, Campostrini, E, de Souza, CLM   +8 more
openaire   +3 more sources

Fear or feast: small mammal activity increases in the presence of carcasses despite increased threat of predation by black‐backed jackals

Wildlife Biology, EarlyView.
Food acquisition is arguably the most important, and among the riskiest behaviours for most mammals. Carcasses are an ephemeral resource for many scavengers, particularly black‐backed jackals Lupulella mesomelas that prey on small mammals. Landscape of fear theory suggests that prey species should reduce their activity in areas of high predator ...
Haemish I. A. S. Melville, W. Maartin Strauss   +1 more
wiley   +1 more source

Elephant grass supplementation in the feed of fattening pigs affects growth performance, carcass characteristics, blood profiles and intestinal microorganisms

Frontiers in Animal Science, 2022
To investigate the effects of the dietary inclusion of elephant grass on the growth performance, blood profiles, carcass characteristics, ileum and stomach microbiota of fattening pigs, pigs were fed one of seven diets including a basal diet (Control ...
Lijuan Gao, Qi Yan, Jie Li, Tiande Pang, Liyan Lu, Xianfeng Yi, Chris S. Jones, Jiyu Zhang   +7 more
doaj   +1 more source

Pyrolysis kinetics of elephant grass pretreated biomasses

Journal of Thermal Analysis and Calorimetry, 2014
The Elephant Grass (Pennisetum purpureum Schum) was pretreated by two independent processes, through washing with hot water (W-EG) and acid solution (AW-EG) to improve its energy properties to apply it in a thermochemical process conversion into fuel. The biomasses were analyzed by proximate and ultimate analysis; and the pyrolysis kinetics, before and
Renata Martins Braga, Tiago R. Costa, Júlio Cézar de Oliveira Freitas, Joana M. F. Barros, D.M.A. Melo, M. A. F. Melo   +5 more
openaire   +2 more sources

Integrating large mammalian herbivores into Dynamic Global Vegetation Models: Status and next steps

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Zoogeochemistry, the study of how animals influence elemental cycling within ecosystems, bridges the fields of zoology, ecology and biogeochemistry. Yet, most terrestrial ecosystem models, especially Dynamic Global Vegetation Models (DGVMs), remain largely plant‐centric
Yue Cheng, Joanne Alice O'Keeffe, Andrew J. Abraham, Jesper Riis Christiansen, Frederik Nygaard Philipsen, Klaus Steenberg Larsen, Fabio Berzaghi, Carsten W. Mueller, Lars Vesterdal, Jeppe A. Kristensen, Elizabeth Le Roux   +10 more
wiley   +1 more source

Ethanol Production from Hydrothermally-Treated Biomass from West Africa

BioResources, 2015
Despite the abundance of diverse biomass resources in Africa, they have received little research and development focus. This study presents compositional analysis, sugar, and ethanol yields of hydrothermal pretreated (195 °C, 10 min) biomass from West ...
Edem Cudjoe Bensah, Zsófia Kádár, Moses Y. Mensah   +2 more
doaj   +1 more source

Effect of Elephant Grass Genotypes to Bioenergy Production [PDF]

Journal of Experimental Agriculture International, 2019
The study aimed to evaluate the agronomic characteristics of elephant grass (Pennisetum purpureum Schum.) genotypes on energy production in the combustion form. A randomized block design with 3 repetitions was used. The treatments were arranged in subdivided plots scheme, considering as a plot the genotypes and as subplots, the harvest season.
Larah Drielly Santos Herrera, Vanessa Quitete Ribeiro Da Silva, Francisco José da Silva Ledo, Francisco Ildefonso da Silva Campos, Wender Mateus Peixoto, Carlos Eduardo Avelino Cabral, Inácio Martins da Silva Neto, Marco Antônio Aparecido Barelli, Luis Miguel Mendes Ferreira, Felipe Gomes Da Silva, Livia Vieira de Barros, Joadil Gonçalves De Abreu, Henrique Guimarães De Favare   +12 more
openaire   +1 more source

Belowground effects of ground‐dwelling large herbivores in forest ecosystems

Journal of Animal Ecology, EarlyView.
This study reviews how ground‐dwelling large herbivores affect forest soil and litter globally. Effects are context‐dependent, vary among species and forest types, and remain poorly studied in tropical forests, highlighting critical gaps in understanding nutrient cycling and ecosystem functioning.
Letícia Gonçalves Ribeiro, Mateus Melo‐Dias, Beatriz Maria Paccas Saraiva, Nacho Villar, Mauro Galetti   +4 more
wiley   +1 more source