نتایج جستجو برای: taxonomic groups

تعداد نتایج: 751952  

Journal: :Global Ecology and Biogeography 2023

Aim Understanding connections between environment and biodiversity is crucial for conservation, identifying causes of ecosystem stress, predicting population responses to changing environments. Explaining requires an understanding how species richness covary across scales. Here, we identify scales locations at which generated correlates with environment. Location Full latitudinal range per cont...

Journal: :Current Biology 2015
Thomas J. Webb Beth L. Mindel

Despite increasing concern over the effects of human activities on marine ecosystems, extinction in the sea remains scarce: 19-24 out of a total of >850 recorded extinctions implies a 9-fold lower marine extinction rate compared to non-marine systems. The extent of threats faced by marine systems, and their resilience to them, receive considerable attention, but the detectability of marine exti...

Nasim Azani Shahin Zarre

The genus Astragalus L. (Fabaceae) is reviewed from both phyloenetic and taxonomic points of view. As the largest genus of flowering plants it has attracted many researchers, but much work remains to be done. A short taxonomic history with special focus on infrageneric classification of the genus, a list of phylogenetic studies including the applied markers and sampling strategies as well a...

2017
Mun Hua Tan Han Ming Gan Yin Peng Lee Gary C B Poore Christopher M Austin

BACKGROUND Whole mitochondrial DNA is being increasingly utilized for comparative genomic and phylogenetic studies at deep and shallow evolutionary levels for a range of taxonomic groups. Although mitogenome sequences are deposited at an increasing rate into public databases, their taxonomic representation is unequal across major taxonomic groups. In the case of decapod crustaceans, several inf...

2009
Heather C. Hamilton Michael S. Strickland Kyle Wickings Mark A. Bradford Noah Fierer

Soil faunal communities are often phylogenetically diverse and the accurate assessment of the taxonomic structure of these communities is both time-consuming and requires a high level of taxonomic expertise. Here we describe a DNA sequence-based methodology for characterizing soil microand mesofaunal communities that is similar to the molecular approaches commonly used to survey soil microbial ...

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