On the distribution of plant abundance data
نویسنده
چکیده
Article history: Plant abundance data are o Received 10 January 2008 Received in revised form 6 February 2009 Accepted 7 February 2009
منابع مشابه
شکست تصادفی آشیان اکولوژیک گونه‌های گیاهی مراتع در اثر چرای حیوانات (مطالعۀ موردی: شهرستان بروجن، استان چهارمحال بختیاری)
Species relative abundance have closely related to ecological niche of plant communities. The broader specie ecological niche for food sources the greater relative abundance of plant species. Species abundance distributions models can be are divided into two groups Statistical and biological models. In this study we aimed to investigate how animal grazing (Long time grazing exclusion, Grazing a...
متن کاملSpatial Distribution Pattern of Tetranychus urticae Koch (Acari: Tetranychidae) on Different Rosa Cultivars in Greenhouse Tehran
The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is an economically important pest of ornamental plant in Iran. The population abundance and spatial distribution were studied on five Rosa cultivars including Maroussia, Wendela, Elderado, Wenedetta, and Hot Lady during two growing seasons of 2011 and 2012 in greenhouse. The k parameter, index of dispersion, Lloyd’s m...
متن کاملتنوع گونه‌ای مکان‌های اکولوژیکی مراتع کوهستانی چِر ارومیه با تأکید بر شاخص‌های عددی و پارامتری
Numerical indices of diversity, in their entirety, do not provide a complete description of distribution and richness of species. Therefore, parametric indices should be also considered in studying of plant communities. In this regard, the indices of species richness, evenness and diversity related to the ecological sites of Cher mountainous rangelands of Urmia were calculated. The diversity pr...
متن کاملتغییر در توزیع فراوانی آشیان اکولوژیک گونه‌های گیاهی در طی مراحل مختلف توالی
Variation along the successional stage of a plant community is not limited to plant composition and diversity but also related to nutrient resources and plant species abundance distribution. Therefore, the use of models that consider the distribution of ecological niches in addition to the relative frequency of species in the distribution of species is also important. The object of current stud...
متن کاملFitting of Species Frequency Distribution Models in Woody Societies in Rangelands of Gouradarah, Gechigiran Ahar
One of the important goals of natural resource management is to conserve plant diversity in the ecosystem so that sites are more productive and more ecologically stable at the various situations. Different diversity indices have been presented to study the species status of natural ecosystems. One of these indicators is the use of empirical distribution models that each of these models ind...
متن کاملEffect of slope gradient on vegetation, species composition and production of medicinal plants (Case study: Rom Rangelands, Qaen)
Extended Abstract Background and objectives: In order to further protect rangeland ecosystems, range suitability in this regard should be investigated before the utilization of medicinal and industrial plants. Plant composition and production and slope of the slope are among the components that determine the suitability of rangeland for the use of medicinal plants. For this purpose, in four ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Ecological Informatics
دوره 4 شماره
صفحات -
تاریخ انتشار 2009