SIZE AND SHAPE-ANALYSIS OF MINERAL-RESOURCES IN ARROYO WILLOW AND THEIR RELATION TO SAWFLY DENSITIES

被引：12

作者：

BOECKLEN, WJ

MOPPER, S

PRICE, PW

机构：

[1] Department of Biology, New Mexico State University, Las Cruces, 88003, NM

[2] Department of Biological Science, Florida State University, Tallahassee, 32306, FL

[3] Department of Biological Science, Northern Arizona University, Flagstaff, 86011, AZ

[4] Museum of Northern Arizona, Flagstaff, 86011, AZ

来源：

ECOLOGICAL RESEARCH | 1991年 / 6卷 / 03期

关键词：

FOLIAR MINERAL NUTRIENTS; INSECT-PLANT INTERACTIONS; SALIX-LASIOLEPIS; SAWFLIES; SIZE AND SHAPE ANALYSIS;

D O I：

10.1007/BF02347131

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The association between host-plant mineral nutrients and insect herbivory is complex, idiosyncratic, and dynamic. Because of this we employed an unusual statistical method to evaluate the relationship between tenthredinid sawfly herbivory and concentrations of foliar nutrients in arroyo willow, Salix lasiolepis. We discovered that among 20 willow clones and between two years arroyo willow varied in the size (absolute concentrations) and shape (relative concentrations) of five mineral nutrients (Ca, Mg, N, P, and K). Similarly, the densities of five sawfly species varied in size and shape among clones and between years. In 1984, relative densities, or shape, of the sawfly community was associated with relative concentrations, or shape, of foliar nutrients in 20 willow clones. In contrast, in 1985 absolute densities, or size, was associated with absolute concentrations, or size, of foliar nutrients. This shift from a shape to a size association between herbivory and foliar mineral nutrients may reflect the large difference in winter precipitation and sawfly densities between years: precipitation and sawfly densities were much greater in 1985 than in 1984.

引用

页码：317 / 331

页数：15

共 48 条

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