Frag SAD : A database of diversity and species abundance distributions from habitat fragments
نویسندگان
چکیده
منابع مشابه
Species-area curves, diversity indices, and species abundance distributions: a multifractal analysis.
Although fractals have been applied in ecology for some time, multifractals have, in contrast, received little attention. In this article, we apply multifractals to the species-area relationship and species abundance distributions. We highlight two results: first, species abundance distributions collected at different spatial scales may collapse into a single curve after appropriate renormaliza...
متن کاملSpecies abundance distributions over time.
It has been known for 50 years that the time period over which data are collected affects the shape of empirical species abundance distributions. However, despite a recent resurgence of interest in characterizing and explaining these patterns the temporal component of species abundance distributions has been largely ignored. I argue that it is essential to take account of time, and not only bec...
متن کاملdistributions of species diversity abundance models and relationship between ecological factors with hill ( ) species diversity index in 4 range sites of isfahan province
our planet is threatened by nuclear wars, climate change and degradation of biodiversity. the first two dangers are relatively focused on, but biodiversity degradation is not properly considered yet. species diversity is mostly composed of biodiversity and is considered an index of changes in ecosystems. many of researchers think of higher species diversity as an index of bio-system’s stability...
متن کاملSpatial scaling of species abundance distributions
Luís Borda-de-Água ([email protected]) and H. M. Pereira, Centro de Biologia Ambiental, Faculdade de Ciências, Univ. de Lisboa, PT-1749-016 Lisboa, Portugal, HMP also at: Depto de Engenharia Civil e Arquitectura, Inst. Superior Técnico, PT-1049 001 Lisboa, Portugal. – P. A. V. Borges, Azorean Biodiversity Group (CITA-A), Univ. dos Açores, Angra do Heroísmo, PT-9700 Angra do Heroísmo, Azores, Por...
متن کاملAttenuation of species abundance distributions by sampling
Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions. In practice, biodiversity can only be assessed from biological material taken by surveys, a difficult task given limited time and resources. A type of random sampling, or often called sub-sampling, is a commonly used techniq...
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ژورنال
عنوان ژورنال: Ecology
سال: 2019
ISSN: 0012-9658,1939-9170
DOI: 10.1002/ecy.2861