搜索结果: 1-15 共查到“abundance”相关记录172条 . 查询时间(0.062 秒)
Influence of stand thinning and repeated fertilization on plant community abundance and diversity in young lodgepole pine stands: 15-year results
Biodiversity British Columbia Fertilization Forest management Lodgepole pine Plant productivity
2024/1/19
Enhanced forest productivity may provide the supply of wood fiber to keep pace with increasing global demand for wood products and the growing constraints on the harvestable land base imposed by measu...
Shifts in Forest Species Composition and Abundance under Climate Change Scenarios in Southern Carpathian Romanian Temperate Forests
LANDIS-II PnET climate change Southern Carpathians forest biomass production species composition species abundance Romanian temperate forests
2023/12/11
The structure and functioning of temperate forests are shifting due to changes in climate. Foreseeing the trajectory of such changes is critical to implementing adequate management practices and defin...
Understory Plant Abundance Is More Important than Species Richness in Explaining Soil Nutrient Variation Following Afforestation on the Eastern Loess Plateau, China
afforestation soil organic carbon total nitrogen total phosphorus understory vegetation biomass
2023/12/1
Afforestation plays an important role in controlling soil erosion and nutrient loss on the Loess Plateau in China. However, previous studies on soil nutrient changes have mainly focused on the effects...
Noise pollution from gas compressors changes abundance of insects, spiders
Noise pollution gas compressors insects spiders
2017/7/20
The relentless roar of natural gas compressors influences the numbers of insects and spiders nearby, triggering decreases in many types of arthropods sensitive to sounds and vibrations, a collaborativ...
Length of prematurity period in wheat cultivars determines maximum cereal aphid abundance
flowering time Metopolophium dirhodum population Rhopalosiphum padi Sitobion avenae spring wheat
2016/9/2
Maximum aphid numbers on wheat are positively related to the length of the period elapsed from immigration to the population peak. We predicted that maximum abundances on late maturing cultivars would...
Effects of insecticides used against the European corn borer on thrips abundance on maize
chemical control foliar insecticides effectiveness Thysanoptera Zea mays L.
2017/4/6
The effect of a single chemical treatment against Ostrinia nubilalis (Hbn.) on thrips abundance on maize in south-eastern Poland was evaluated. Two insecticides: Karate Zeon 050 CS, containing lambda-...
Study Shows Large Variability in Abundance of Viruses that Infect Ocean Microorganisms
Large Variability Viruses Infect Ocean Microorganisms
2016/2/22
Collecting and re-examining more than 5,600 estimates of ocean microbial cell and virus populations recorded over the past 25 years, researchers have found that viral populations vary dramatically fro...
Intermediate disturbance promotes invasive ant abundance
Linepithema humile Urban–rural gradient
2015/12/10
Urban habitats are undergoing a faunal and floral homogenization process worldwide. We investigated
how such homogenization influences ant communities. We monitored ant species richness a...
Estimating red deer abundance using the pellet-based distance sampling method
cervidae distance sampling deer density pellet group counting rural areas
2015/11/26
Many European agricultural landscapes have been abandoned facilitating the comeback of large ungulates. In Portugal, the increase in red deer numbers caused local conflicts with landowners reporting e...
Indirect effects of timber extraction on plant recruitment and diversity via reductions in abundance of frugivorous spider monkeys
Ateles geoffroyi logging Manilkara zapota
2015/11/13
The ecological effects of logging in the tropics have been analysed largely in terms of its impacts on species
diversity and abundance. However, information is very limited regarding the impact of lo...
ESTIMATION AND VALID ATION OF URBAN VEGETATION ABUNDANCE BY SPECTRAL MIXTURE ANA LYSIS
urban vegetation Quickbird Landsat
2015/8/3
Moderate resolution (< 50 m) optical sensors can provide multitemporal imagery of urban vegetation distribution and abundance. Given a rigorous, repeatable and verifiable method for estimating vegetat...
Effects of Nitrate Addition on Rumen Fermentation, Bacterial Biodiversity and Abundance
Ion Torrent Sequencing Quantitative Polymerase Chain Reaction
2016/5/19
This study examined changes of rumen fermentation, ruminal bacteria biodiversity and abundance caused by nitrate addition with Ion Torrent sequencing and real-time polymerase chain reaction. Three rum...
Earthworm biomass and abundance, soil chemical and physical properties under different poplar plantations in the north of Iran
soil properties populus clones populus caspica organic carbon poplar
2015/4/24
We evaluated earthworm abundance and biomass in plantations of different poplar species and clones as well as the effect of some soil chemical and physical properties on them. Even-aged poplar species...
Abundance and diversity of soil arthropods and fungi in shelterbelts integrated with pastures in the central tablelands of New South Wales, Australia
diversity richness shelterbelts pastures soil arthropods soil fungi species abundance
2015/4/14
Shelterbelts are important for the sustainability of agriculture because they provide a variety of benefits to farmers and the society. Several published papers demonstrate that integration of shelter...
Does intraguild predation of Cosmia trapezina L. (Lep.: Noctuidae) influence the abundance of other Lepidoptera forest pests?
Cosmia trapezina intraguild predation Lepidoptera larvae time series
2015/3/27
The noctuid C. trapezina (CT) has been considered an occasional predator of other Lepidoptera larvae. Functional/numerical response of predator and/or prey was estimated using 27 years of time-series ...