Determinação da Distância de Dispersão Efetiva de Cabralea canjerana
Floresta e AmbienteObjetivou-se conhecer a distância de dispersão efetiva de Cabralea canjerana (Vell.) Mart. em um fragmento de Floresta Estacional. Foram alocadas parcelas de 5 m × 5 m em uma área com alta densidade de indivíduos regenerantes da espécie.
Anna Paula Lora Zimmermann +2 more
doaj +1 more source
Generating static perfect-fluid solutions of Einstein's equations
, 2015 We present a method for generating exact interior solutions of Einstein's equations in the case of static and axially symmetric perfect-fluid spacetimes.
Quevedo, Hernando, Toktarbay, Saken
core +1 more source
Herbaceous Filter Strips in Agroecosystems: Implications for Ground Beetle (Coleoptera: Carabidae) Conservation and Invertebrate Weed Seed Predation [PDF]
, 2018 A 9.3-ha crop field flanked by two filter strips was selected to: 1) assess carabid beetle activity-density and community composition and 2) assess post-dispersal weed seed predation by invertebrates in these habitats.
Landis, Douglas A +2 more
core +3 more sources
Agronomy, 2019 Organic farming faces challenges providing sufficient nutrient supply as manure and crop rotations are often the major nutrient inputs. Larger row distances and fewer seed densities can support nitrogen availability by giving more space to the single ...
Falko Stockmann +5 more
doaj +1 more source
Primordial Magnetic Fields from Dark Energy [PDF]
, 2001 Evidences indicate that the dark energy constitutes about two thirds of the critical density of the universe. If the dark energy is an evolving pseudo scalar field that couples to electromagnetism, a cosmic magnetic seed field can be produced via ...
Amendola +39 more
core +2 more sources
Seeding Density Directly Influences Crambe Productivity
Revista de Gestão Social e AmbientalObjective: The objective of this study was to evaluate the development and production characteristics of crambe, under different planting densities and different spacing between rows. Theoretical Framework: For crops that are still little explored, such as crambe, sowing management in new regions lacks information that would enable rural producers to
Lucas Marquezan Nascimento +5 more
openaire +1 more source
PlantsTo examine the effects of the recent Acmella radicans invasion on plant community and diversity in invaded habitats, the composition, density, species richness, diversity indices, and evenness index of the soil seed bank community of two different ...
Xiaohan Wu +10 more
doaj +1 more source
Rapid assessment of rice seed availability for wildlife in harvested fields
Wildlife Society Bulletin, 2011 Rice seed remaining in commercial fields after harvest (waste rice) is a critical food resource for wintering waterfowl in rice‐growing regions of North America.
Brian J. Halstead +7 more
doaj +1 more source
A study of the effects of ground cover on overwintering slug populations and effect of coulter design on slug incidence in direct drilling : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science at Massey University [PDF]
, 1982 A two stage study involving the effect of vegetation cover on overwintering slug populations, and the effect of coulter design on slug incidence and damage in a direct drilled cereal was carried out during the 1980/81 growring season.
Follas, George Brian
core
Quantifying the radiation belt seed population in the 17 March 2013 electron acceleration event [PDF]
, 2014 We present phase space density (PSD) observations using data from the Magnetic Electron Ion Spectrometer instrument on the Van Allen Probes for the 17 March 2013 electron acceleration event.
Baker, D. N. +7 more
core +2 more sources