Learn More
Photosynthesis and related leaf characteristics were measured in canopies of co-occurring Quercus rubra L. (red oak), Quercus prinus L. (chestnut oak) and Acer rubrum L. (red maple) trees. Mature (20+ m tall) trees were investigated at sites of differing soil water availability within a catchment (a drier upper site and a wetter lower site). Leaf(More)
Two process-based models were used to identify the environmental variables limiting productivity in a pristine, mature forest dominated by rimu (Dacrydium cupressinum Sol. ex Lamb.) trees in South Westland, New Zealand. A model of canopy net carbon uptake, incorporating routines for radiation interception, photosynthesis and water balance was used to(More)
We measured responses of leaf respiration to temperature and leaf characteristics in three deciduous tree species (Quercus rubra L., Quercus prinus L. and Acer rubrum L.) at two sites differing in water availability within a single catchment in the Black Rock Forest, New York. The response of respiration to temperature differed significantly among the(More)
Despite its recent expansion in eastern US forests, red maple (Acer rubrum L.) generally exhibits a low leaf photosynthetic rate, leaf mass per unit area (LMA) and leaf nitrogen concentration ([N]) relative to co-occurring oaks (Quercus spp.). To evaluate these differences from the perspective of leaf energy investment, we compared leaf construction cost(More)
OBJECTIVES To evaluate the clinical effectiveness of a self-managed single exercise programme versus usual physiotherapy treatment for rotator cuff tendinopathy. DESIGN Multi-centre pragmatic unblinded parallel group randomised controlled trial. SETTING UK National Health Service. PARTICIPANTS Patients with a clinical diagnosis of rotator cuff(More)
OF “MOICE” AND MEN: THE EVOLUTION OF A MALE-LED SOUND CHANGE JEFFREY CHRISTOPHER CONN WILLIAM LABOV Some of the most prominent findings regarding the documentation of linguistic change and how social and linguistic factors affect change as it moves through a community have come from the project on Linguistic Change and Variation in Philadelphia (LCV)(More)
Forests are dynamic in both structure and species composition, and these dynamics are strongly influenced by climate. However, the net effects of future tree species composition on net primary production (NPP) are not well understood. The objective of this work was to model the potential range shifts of tree species (DISTRIB Model) and predict their impacts(More)
A broadleaf mixed forest diversified through partial tree thinning was studied to identify expedient sampling and data analysis procedures to capture the heterogeneous within-canopy downward distribution of instantaneous global photosynthetic photon flux (PPF); to extract foliage structural properties from the acquired light values; and to compute(More)
Positive Steps is a six month residential program in southeastern Los Angeles County. The program seeks to assist residents in recovery from chemical dependency and to prevent sexual and other risk factors which promote HIV transmission. Positive Steps serves a multicultural population of women and transgender male to female. Program participants are(More)
Determining the location of radar emitters is one of the most important categories of search problems for defence related tasks. Autonomous Air Vehicles (AAVs) that are equipped with electronic support (ES) sensor systems, provide a means of extending search capabilities beyond the visual horizon and detecting such emitters. However, detection alone is not(More)