ON THE USE OF 3 PERFORMANCE-MEASURES FOR FITTING SPECIES RESPONSE CURVES

被引：23

作者：

FERRERCASTAN, D

CALVO, JF

ESTEVESELMA, MA

TORRESMARTINEZ, A

RAMIREZDIAZ, L

机构：

[1] Departamento de Ecología y Medio Ambiente, Universidad de Murcia, Campus Universitario de Espinardo, Murcia, E-30100, Espinardo

来源：

JOURNAL OF VEGETATION SCIENCE | 1995年 / 6卷 / 01期

关键词：

COMPLEX GRADIENT; COVER; DENSITY; DIRECT GRADIENT ANALYSIS; GENERALIZED LINEAR MODEL; PERIPLOCA AUGUSTIFOLIA; REGRESSION DIAGNOSTIC; SHRUB VOLUME; SPAIN;

D O I：

10.2307/3236256

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Quantitative response surfaces obtained from three performance measures, density, cover and volume, are compared, using as an example the spatial distribution of Periploca angustifolia (Asclepiadaceae) in SE Spain. Generalized linear models are used to examine relationships between these species performance measures and complex gradients of aspect, slope angle and altitude. All three performance measures showed a skewed response to the environmental gradients, unlike the Gaussian responses commonly assumed in vegetation theory; skewness increased as the number of dimensions of the performance measures increased. Certain asymmetries between the responses are discussed in terms of competition, and problems related to the use of complex gradients are considered.

引用

页码：57 / 62

页数：6

共 23 条

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