نتایج جستجو برای: indicator species

تعداد نتایج: 618489  

Journal: :Turkish Journal of Forestry | Türkiye Ormancılık Dergisi 2017

Journal: :Marine Pollution Bulletin 2021

The tropical waters of the Northern Arabian Gulf have a long history maritime resource richness. High levels biodiversity result from complex matrix coastal habitats, coral reefs and sea grass beds that characterise region. Insight into ongoing health such habitats broader Kuwait environment can be gauged by status indicator species found within these habitats. Here we review information on occ...

Journal: :Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 2011

H. Pourbabaei, R. Abedi

The objective of this research was to identify and describe the different Ecological Species Groups (vegetation types) present in the Rural Heritage Museum of Guilan. The study area was approximately 260 ha, which is located in the Saravan Forest Park in Guilan province, north of Iran. Sampling procedure was performed with a systematic random technique. A total of 89 plots were sampled. Classif...

Journal: :Proceedings. Biological sciences 2000
M Gomendio J Cassinello E R Roldan

We studied three closely related species of endangered gazelles (Gazella dorcas, Gazella dama and Gazella cuvieri) with different levels of inbreeding in order to determine at which intensities inbreeding influences ejaculate traits. We also examined whether fluctuating asymmetry (FA) is a reliable indicator of genetic as well as reproductive stress. Our results show that, within each populatio...

2002
Daniel Simberloff

Because it & so difficult to monitor and manage every aspect of biodiversity, several shortcuts have been proposed whereby we monitor and/or protect single species. The indicator species concept is problematic because there is no consensus on what the indicator is supposed to indicate and because it is difficult to know which is the best indicator species even when we agree on what it should in...

2013
Pedro Cardoso François Rigal Simone Fattorini Sofia Terzopoulou Paulo A. V. Borges

Successful conservation plans are conditioned by our ability to detect anthropogenic change in space and time and various statistical analyses have been developed to handle this critical issue. The main objective of this paper is to illustrate a new approach for spatial analysis in conservation biology. Here, we propose a two-step protocol. First, we introduce a new disturbance metric which pro...

2007
Jan - Philip Witte Rafał Wójcik Martin de Haan

Question: Is it possible to mathematically classify relevés into vegetation types on the basis of their average indicator values, including the uncertainty of the classification? Location: The Netherlands. Method: A large relevé database was used to develop a method for predicting vegetation types based on indicator values. First, each relevé was classified into a phytosociological association ...

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