The mechanisms which structure communities have been the focus of a large body of research. Here, we address the question if habitat characteristics describing habitat quality may drive changes in community composition and beta diversity of bromeliad-inhabiting microfauna. In our system, changes in canopy cover along an environmental gradient may affect resource availability, disturbance in for...

Longwave radiation is often the dominant source of energy for snowmelt in forests. Measurements at forest sites varying density Sweden and Finland show that downwelling longwave enhanced under canopies, even sparse canopies particularly clear skies. Canopy must be estimated accurately to predict this enhancement. Linear regression with above-canopy air temperature as predictors sub-canopy gives...

The Urban Heat Island (UHI) is one of the most well documented phenomena in urban climatology. Although a range of measurements and modelling techniques can be used to assess the UHI, the paucity of traditional meteorological observations in urban areas has been an ongoing limitation for studies. The availability of remote sensing data has therefore helped fill a scientific need by providing hi...

The coupling of LIDAR and SAR for vegetation structure has been investigated in several terrestrial biomes [7, 4, 6]. In this paper, we explore the measurement of biomass in boreal forests. This ecosystem was selected since the boreal biome is environmentally important, yet significantly under-sampled. The boreal forest biome consists of a circumpolar region lying above 50o–60o latitude and ext...

E (Rn G) cp{es[T(z)] e(z)}/ra (ra rc)/ra [1] Precision irrigation requires a method of quantifying the crop water status or root zone depletion of water to determine when and how where E is the latent heat of vaporization (J m 2 s 1), much water to apply to the soil. Changes in canopy resistance (rc) the change of saturation vapor pressure with temperaand canopy temperatures have the potential ...

Microclimate may infl uence use of early successional habitat by birds. We assessed the relationships between avian habitat use and microclimate (temperature, light intensity, and relative humidity) in experimentally created canopy gaps in a bottomland hardwood forest on the Savannah River Site, SC. Gaps were 2to 3-year-old group-selection timber harvest openings of three sizes (0.13, 0.26, 0.5...