Results 41 to 50 of about 5,757 (199)
Agronomía Colombiana, 1990 Empleando la técnica de cultivos hidropónicos y utilizando la soluclón Hoagland se estableció la sintomatología causada por la deficiencia de los macronutrientes (nitrógeno, fósforo, azufre, potasio, magnesio, calcio, hierro) y micronutrientes en ...
Tovar G. Olga Constanza +1 more
doaj
River Research and Applications, EarlyView.ABSTRACT Invasive species can fundamentally alter their introduced habitats by changing natural processes and harming native species crucial to functional ecosystems and human needs. Although the number of potential invasive species is large, the suitability of novel locations to support population establishment is limited by both physical and ...
Emily E. Smoot +5 more
wiley +1 more source
, 1956 Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp.
openaire +2 more sources
EDIS, 2003 A popular tree of moist to wet soils, common alder is a moderate to fast-growing (two feet per year) deciduous tree which usually grows to 40 to 50 feet in height with a 20 to 40-foot spread and a 12 to 18-inch trunk but is capable of reaching 80 feet ...
Edward Gilman, Dennis Watson
doaj +1 more source
Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects
Wildlife Biology, EarlyView.Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer +8 more
wiley +1 more source
Introgression of Alnus serrulata and Alnus rugosa [Betulaceae]
, 1961 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire +2 more sources
BMC Evolutionary Biology, 2011 Background Mycorrhizal fungi form intimate associations with their host plants that constitute their carbon resource and habitat. Alnus spp. (Betulaceae) are known to host an exceptional species-poor and specialized ectomycorrhizal (ECM) fungal community
Manzi Sophie +3 more
doaj +1 more source
Wildlife Biology, EarlyView.Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley +1 more source
Triterpenoids and Sterols from the Stem of Burk
Natural Product Communications, 2006 The chemical constituents of the stem of Alnus formosana Burk. were investigated and sixteen known compounds, composed of eleven triterpenoids and five sterols, were isolated and characterized from the n-hexane- and chloroform-soluble fractions of the ...
Chien-Kuang Chen +4 more
doaj +1 more source
Wildlife Biology, EarlyView.Predation by pine martens Martes martes and red foxes Vulpes vulpes is an important factor influencing the population dynamics of capercaillie Tetrao urogallus. However, there is a knowledge gap regarding the relative effects of these mesopredators on the reproductive success of capercaillie. To better understand how various landscape factors influence
Siow Yan Jennifer Angoh +4 more
wiley +1 more source