R. Baxter

Details der Publikationsliste

Zeitraum

1994 - 2009

Anzahl

45

Co-Autoren

Upscaling as ecological information transfer : a simple framework with application to Arctic ecosystem carbon exchange. (2009)

Stoy, P. C., Williams, M., Disney, M., Prieto-Blanco, A., Huntley, B., Baxter, R., ...

Transferring ecological information across scale often involves spatial aggregation, which alters information content and may bias estimates if the scaling process is nonlinear. Here, a potential...

Nonvascular contribution to ecosystem NPP in a subarctic heath during early and late growing season. (2009)

Campioli, M., Samson, R., Michelsen, A., Jonasson, S., Baxter, R., Lemeur, R.

Abstract Bryophytes and lichens abound in many arctic ecosystems and can contribute substantially to the ecosystem net primary production (NPP). Because of their growth seasonality and their...

Slope, aspect and climate : spatially explicit and implicit models of topographic microclimate in chalk grassland. (2008)

Bennie, J., Huntley, B., Wiltshire, A., Hill, M. O., Baxter, R.

The slope and aspect of a vegetated surface strongly affects the amount of solar radiation intercepted by that surface. Solar radiation is the dominant component of the surface energy balance and...

Net ecosystem exchange over heterogeneous Arctic tundra : scaling between chamber and eddy covariance measurements. (2008)

Fox, A. M., Huntley, B., Lloyd, C. R., Williams, M., Baxter, R.

Net ecosystem exchange (NEE) was estimated for an area of tundra near Abisko using both eddy covariance (EC) data and chamber measurements. This area of tundra is heterogeneous with six principal...

Influence of slope and aspect on long-term vegetation change in British chalk grasslands. (2006)

Bennie, J., Hill, M. O., Baxter, R., Huntley, B.

The species composition of fragmented semi-natural grasslands may change over time due to stochastic local extinction and colonization events, successional change and/or as a response to changing...

Buyer-seller relationships: Australasian research and reflections (2005)

Varey, R. J., Baxter, R., Brodie, R. J., Brookes, R. W., Plewa, Carolin, Quester, Pascale Genevieve, ...

The aim of this paper is to overview current thinking on a range of ‘relationship’ topics under the rubric of Relationship Marketing. Several scholars working from the perspective of Australia...

Buyer-seller relationships: Australasian research and reflections (2005)

Varey, R. J., Baxter, R., Brodie, R. J., Brookes, R. W., Plewa, Carolin, Quester, Pascale Genevieve, ...

The aim of this paper is to overview current thinking on a range of ‘relationship’ topics under the rubric of Relationship Marketing. Several scholars working from the perspective of Australia...

Effects of elevated CO2 on the vasculature and phenolic secondary metabolism of plantago maritima. (2004)

Matthew ., P. D., Bryant, D. N., Cummins, I., Ashenden, T. W., Gates, P., Baxter, R., ...

We have examined the effect of elevated CO2 on the vasculature and phenolic secondary metabolism on clones of the maritime plant Plantago maritima (L.). Plants were exposed to either ambient (360...

Grammar Model-based Program Evolution (2004)

Y. Shan, R. I. Mckay, R. Baxter

In Evolutionary Computation, genetic operators, such as mutation and crossover, are employed to perturb individuals to generate the next population. However these fixed, problem independent genetic...

Phosphorus composition of upland soils polluted by long-term atmospheric nitrogen deposition. (2003)

Turner, B. L., Chudek, J. A., Whitton, B. A., Baxter, R.

Atmospheric N deposition can enhance biological P limitation in terrestrial ecosystems and increase the importance of organic P to plants and microorganisms. We used NaOH–EDTA extraction and...

Pseudoviviparous reproduction of Poa alpina var. vivipara L. (Poaceae) during long-term exposure to elevated atmospheric CO2. (2003)

Pierce, S., Stirling, C. M., Baxter, R.

Pseudovivipary is an asexual reproductive strategy exhibited by some arctic/alpine grasses in which leafy plantlets are produced in place of seeds, with genetic conservation an advantage for stress...

Host plant growth characteristics as determinants of abundance and phenology in jumping plant-lice on downy willow. (2001)

Hodkinson, I. D., Bird, J. M., Hill, J. K., Baxter, R.

1. Salix lapponum host plants at an upper altitudinal site differed significantly in size, structural density, phenology, growth performance, and spatial isolation from those growing at a lower site....

Standardisation of temperature observed by automatic weather stations. (2001)

Joyce, A. N., Adamson, J., Huntley, B., Parr, T., Baxter, R.

Daily mean, maximum and minimum surface air temperature data were gathered from a network of automatic weather stations (AWS) within the Moor House National Nature Reserve in northern England. Five...

The effect of four weeks of supraphysiological hormone administration on the insulin-like growth factor axis in women and men. (2000)

Dall, R., Longobardi, S., Ehrnborg, C., Keay, N., Rosen, T., Jorgensen, J., ...

Measurements of serum insulin-like growth factor I (IGF-I) and related markers are routinely used in the diagnosis and treatment of GH deficiency and excess. The validity of these markers for...

The effect of four weeks of supraphysiological hormone administration on the insulin-like growth factor axis in women and men. (2000)

Dall, R., Longobardi, S., Ehrnborg, C., Keay, N., Rosen, T., Jorgensen, J., ...

Measurements of serum insulin-like growth factor I (IGF-I) and related markers are routinely used in the diagnosis and treatment of GH deficiency and excess. The validity of these markers for...

Architectural and physiological heterogeneity within the synflorescence of the pseudoviviparous grass Poa alpina var. vivipara L. (2000)

Pierce, S., Stirling, C.M., Baxter, R.

Many biotypes of the northern‐hemisphere Arctic‐Alpine grass Poa alpina L. reproduce asexually via prolification of the spikelet axis to produce dehiscing shoots. Although capable of...

Responses of the growth hormone (GH) and insulin-like growth factor axis to exercise, GH administration, and GH withdrawal in trained adult males: A potential test for GH abuse in sport (1999)

Wallace, JD, Cuneo, RC, Baxter, R, Orskov, H, Keay, N, Pentecost, C, ...

GH abuse by elite athletes is currently undetectable. To define suitable markers of GH doping, we assessed the effects of acute exercise, GH administration, and GH withdrawal on the GH/insulin-like...

Effect of elevated CO2 and nutrient status on growth, dry matter partitioning and nutrient content of Poa alpina var. vivipara L. (1997)

Baxter, R., Ashenden, T.W., Farrar, J.F.

Poa alpina var. vivipara L. was grown in an atmosphere containing either 340 or 680 μmol CO2 mol−1 within controlled environment chambers. The available nutrient regime was varied by altering the...

Effects of elevated CO2 concentrations on three montane grass species: III. Source leaf metabolism and whole plant carbon partitioning (1995)

Baxter, R., Bell, S. A., Sparks, T.H., Ashenden, T.W., Farrar, J.F.

Agrostis capillaris L.5, Festuca vivipara L. and Poaalpina L. were grown in outdoor open-top chambers at either ambient (340 � 3μmol mol−1) or elevated (680�4μmol mol−1) concentrations of...

Energy metabolism and substrate oxidation in acromegaly (1995)

Baxter, R

Short term GH administration increases lipid breakdown and oxidation (lipidox) and reduces glucose uptake and carbohydrate oxidation (CHOox). It is not clear whether similar shifts in substrate...

Effects of elevated carbon dioxide on three grass species from montane pasture II. Nutrient uptake, allocation and efficiency of use (1994)

Baxter, R., Gantley, M., Ashenden, T.W., Farrar, J.F.

Agrostis capillaris L.4 Festuca vivipara L. and Poa alpinaL. were grown in outdoor open-top chambers at either ambient (340 μmol mol−1) or elevated (680 μmol−1) CO2 for periods from 79 to 189...

Effects of elevated carbon dioxide on three montane grass species: I. Growth and dry matter partitioning (1994)

Baxter, R., Ashenden, T.W., Sparks, T.H., Farrar, J.F.

Upland grasslands are a major component of natural vegetation within the UK. Such grasslands support slow growing relatively stable plant communities. The response of native montane grass species to...

The Community Tracking Study analyses of market change: introduction.

Ginsburg, P B, Kemper, P, Baxter, R, Kohn, L T

OBJECTIVE: To introduce two articles and describe methods that are common to them. DATA SOURCES/STUDY SETTING:Interviews conducted in person in 1996/1997 with leaders of organizations involved in the...

The Community Tracking Study analyses of market change: introduction.

Ginsburg, P B, Kemper, P, Baxter, R, Kohn, L T

OBJECTIVE: To introduce two articles and describe methods that are common to them. DATA SOURCES/STUDY SETTING:Interviews conducted in person in 1996/1997 with leaders of organizations involved in the...

An automatically calibrated urban model

R Baxter, I Williams

The Garin - Lowry model is a well-documented spatial interaction model which does, however, leave unanswered questions that relate to the constraint procedure and the supply component. The...