Population Ecology
SCIE-ISI SCOPUS (1996,1999-2023)
1438-390X
1438-3896
Cơ quản chủ quản: Springer Japan , WILEY
Lĩnh vực:
Ecology, Evolution, Behavior and Systematics
Các bài báo tiêu biểu
Iσ‐Index, a measure of dispersion of individualsConclusion and summary As the I σ ‐index is neither affected by the mean per sample unit except for regular distribution nor standing on the assumption of any definite type of contagious distribution, it may have the most wide range of application among the ones hitherto deviced for measuring the dispersion of individual... ... hiện toàn bộ
- 1962
The estimation of population size, migration rates and survival in a stratified populationSummary Estimates of survival, migration rates, and population size are developed for a triple catch marking experiment on n (n >‐2) areas with migration among all areas and death in all areas occurring, but no recruitment (birth). This repressents the extension to three sampling times of the method ofChapman and... hiện toàn bộ
- 1973
Measurement of non‐randomness in spatial distributionsSummary The measurement of departure from randomness in spatial distributions has widespread application in ecological work. Several “indices of non‐randomness” are compared with regard to their dependence on sample number, sample size and density. Criteria for the best choice of index for specific situations are discussed. A new coefficient C... hiện toàn bộ
Tập 8 Số 1 - Trang 1-7 - 1966
Competitive exclusion through reproductive interferenceSummary A simple differential equation model was developed to describe the competitive interaction that may occur between species through reproductive interference. The model has the form comparable to Volterra's competition equations, and the graphical analysis of the outcome of the two‐species interaction based on its zero‐growth isoclines proved that: (1) The pos... ... hiện toàn bộ
Tập 34 Số 2 - Trang 275-284 - 1992
Quantitative evaluation of predation by spiders on the green rice leafhopper, Nephotettix cincticeps Uhler, by a sight‐count methodSummary A sight‐count method for evaluation of predation by spiders on the green rice leafhopper, Nephotettix cincticeps was proposed and its applicability was tested under natural conditions. The number (n ) of leafhoppers preyed on by spiders per rice hill per day was estimated by the formula:
... hiện toàn bộ
- 1972
Infochemically mediated tritrophic interaction webs on cabbage plantsAbstract In response to damage by herbivores, plants are known to emit infochemicals that enhance the effectiveness of insect parasitoids. Studies on plant–parasitoid interactions mediated by such infochemicals have focused on the tritrophic systems in which plants are infested by a single herbivore species. In natural ecosystems, however, plants are often simultane... ... hiện toàn bộ
Tập 43 Số 1 - Trang 23-29 - 2001
Biodiversity and community structure of temperate butterfly species within a gradient of human disturbance: An analysis based on the concept of generalist vs. Specialist strategiesAbstract We monitored nine butterfly communities with varying degrees of human disturbance by conducting a census twice a month during 1980 by the line transect method in and around Tsukuba City, central Japan. We analyzed the biodiversity and community structures using the generalist/specialist concept. The site (community) order based on decreasing human disturban... ... hiện toàn bộ
Tập 36 Số 2 - Trang 187-199 - 1994
A new method of sequential sampling to obtain the population estimates with a fixed level of precisionSummary A simple method of sequential sampling is developed which would make it automatically possible to secure, without excess sampling, a predetermined level of precision for a series of population estimates being required. It appears to have wide application to sampling field populations under various situations since it is simply based upon the relationship of ... ... hiện toàn bộ
Tập 11 Số 2 - Trang 127-136 - 1969
A comparison of species diversity estimatorsAbstract Although having been much criticized, diversity indices are still widely used in animal and plant ecology to evaluate, survey, and conserve ecosystems. It is possible to quantify biodiversity by using estimators for which statistical characteristics and performance are, as yet, poorly defined. In the present study, four of the most frequently used diversity... ... hiện toàn bộ
Tập 41 Số 2 - Trang 203-215 - 1999