Spatial pattern and process in plant-pathogen interactions.

Ecology;  June 1, 1996 ;   Real, Leslie A. McElhaney, Paul;   787 words ......types of problems. First, how can spatial pattern be detected and assessed, i.e., how...interactions that generate different kinds of spatial pattern in ecological systems, i.e., what...For example, statistical analysis of spatial pattern in plant ecology (phytosociology...

(book review)

Ecology;  June 1, 2000 ;   FORTIN, MARIE-JOSEE;   787 words ......expresses itself through species spatial pattern (i.e., heterogeneity) and...composition and abundance). Spatial pattern refers directly to the notion...of nature's complexity, spatial pattern and diversity, are affected...

Measures of spatial pattern for counts.

Ecology;  April 1, 1998 ;   Perry, Joe N.;   787 words ......Ecologists have therefore studied the spatial pattern of individuals of a particular species...paper is about the quantification of spatial pattern for data in the form of counts of...basis of SADIE is to quantify the spatial pattern in a sampled population by measuring...

Spatial patterns and memory for locations

Learning & Behavior;  November 1, 2004 ;   Brown, Michael F; Wintersteen, Jillian;   787 words ......possible exemplars of a checkerboard spatial pattern. During training, locations that had...were controlled by the checkerboard spatial pattern. The visual cues enhanced the ability...cues did not enhance control by the spatial pattern, as would be expected if the same...

Spatial pattern learning in the radial arm maze

Learning & Behavior;  February 1, 2006 ;   Brown, Michael F; Giumetti, Gary W;   787 words ...Rats experienced a spatial pattern of baited and unbaited arms in an eight-arm radial maze. The spatial pattern remained constant over trials, but...was no evidence of control by the spatial pattern during free choice training trials...

Season and distance from forest - old field edge affect seed predation by...

Northeastern Naturalist;  January 1, 2000 ;   McCormick, James T; Meiners, Scott J;   787 words ...Abstract - We studied the spatial pattern of seed predation across a...the edge in both trials. The spatial pattern of seed predation also differed...invasion dynamics by altering the spatial pattern of seed predation. Seed predation...

UNCERTAINTY OF RELATIONS BETWEEN LANDSCAPE COMPONENTS - A TOOL FOR...

Ekológia;  January 1, 2006 ;   Khoroshev, Alexander V; Merekalova, Ksenia A;   787 words ......a tool for modelling evolution of spatial pattern. Ekolgia (Bratislava), Vol. 25, Supplement...p. 122-130. Dynamics of landscape spatial pattern is a topic of great concern in landscape...We argue that long-term trends in spatial pattern can be revealed using analysis of...

DEMOGRAPHY OF A SAVANNA PALM TREE: PREDICTIONS FROM COMPREHENSIVE SPATIAL...

Ecology;  September 1, 1999 ;   Barot, Sebastien Gignoux, Jacques Menaut, Jean-Claude;   787 words ......and environmental heterogeneity. Spatial pattern analysis methods are often regarded...suggest that the lack of acceptance of spatial pattern analysis as a useful predictive tool...point, through the intensive use of spatial pattern analysis on a natural population of...

spatial randomness

A Dictionary of Geography;    SUSAN MAYHEW;   36 words ...spatial randomness A distribution pattern of some variable where the values at a location are not dependent on the values at neighbouring locations, or where the observed spatial pattern is no more, or less, likely than any other.

Conservation Implications of Individual Scale Spatial Pattern in the...

The American Midland Naturalist;  October 1, 2006 ;   Girdler, E Binney; Radtke, Theresia A;   787 words ......these species. We investigated the spatial pattern in a population of the monocarpic...Lauenroth (1993) investigated the spatial pattern in a bunchgrass community, finding...however, insights gained from such spatial pattern analyses have not been widely considered...

Endogenous fractal dynamics at alpine treeline ecotones.

Geographical Analysis;  July 1, 2006 ;   Zeng, Yu Malanson, George P.;   787 words ......The temporal evolution of the spatial pattern is also fractal. Landscape scale linear correlations between spatial pattern and the rate of advance of...understanding of the relations between spatial pattern and ecological fluxes across...

A GIS-based moving window analysis of landscape pattern in the Beijing...

International Journal of Sustainable Development and World Ecology;  October 1, 2006 ;   Wu, Qiong; Hu, Dan; Wang, Rusong; Li, Hongqing; Et al;   787 words ......landscape metrics to quantify the spatial pattern of urbanization in Beijing. The results...that, for class-level metrics, the spatial pattern of urbanization could be quantified...cities have different structures, their spatial pattern undoubtedly affects ecological, physical...

SPATIOTEMPORAL VARIATION IN SEED DISPERSAL AND RECRUITMENT NEAR AND FAR...

Ecology;  August 1, 2000 ;   NATHAN, RAN SAFRIEL, URIEL N. NOY-MEIR, IMANUEL SCHILLER, GABRIEL;   787 words ......dispersal is the main process linking the spatial pattern of parent plants with that of their...1994, Schupp and Fuentes 1995). The spatial pattern of dispersed seeds serves as a template...and growth that ultimately shape the spatial pattern of adult plants. The basic component...

Effects of fire size and pattern on early succession in Yellowstone...

Ecological Monographs;  November 1, 1997 ;   Turner, Monica G. Romme, William H. Gardner, Robert H. Hargrove, William W.;   787 words ......processes (Levin 1992, Kareiva 1994). Spatial pattern has demonstrable effects on habitat...evaluated the relative importance of spatial pattern compared to other controlling variables...for investigating the importance of spatial pattern on succession. Investigations into...

Identifying aggregation and association in fully mapped spatial data.

Ecology;  March 1, 1999 ;   Coomes, David A. Rees, Mark Turnbull, Lindsay;   787 words ......advanced our understanding of how spatial pattern and competitive interactions are interrelated...Rees et al. 1996). Of course, the spatial pattern of a community is not only determined...environment could influence the observed spatial pattern (Law et al. 1993). It is not possible...