نتایج جستجو برای: gymnosperms

تعداد نتایج: 875  

Journal: :Ecology letters 2008
Peter B Reich Mark G Tjoelker Kurt S Pregitzer Ian J Wright Jacek Oleksyn Jose-Luis Machado

Using a database of 2510 measurements from 287 species, we assessed whether general relationships exist between mass-based dark respiration rate and nitrogen concentration for stems and roots, and if they do, whether they are similar to those for leaves. The results demonstrate strong respiration-nitrogen scaling relationships for all observations and for data averaged by species; for roots, st...

2007
V. A. Funk

Introduction Taxonomy classes are often taught that we as systematists are concerned with grouping and ranking. We are actually concerned with two levels of grouping: the grouping of individuals (into species), and the grouping of these "groups of individuals." There are, therefore, only two categories, species and groups of species (Nelson and Platnick, 1981). If we strive to make our species ...

Journal: :Biyolojik çeþitlilik ve koruma 2022

Aksaz wetland is located in Akliman district which away from 10 km North of the city center Sinop province. This study was performed between 2015 and 2017. 1274 plant samples were collected research area all them identified. 444 specific infraspecific taxa 269 genera belonging to 71 families determined. Among one taxon belongs Pteridophyts, two are Gymnosperms, 441 out Angiosperms. Additionally...

Journal: :The New phytologist 2016
Jacob Heilmann-Clausen Pietro K Maruyama Hans Henrik Bruun Dimitar Dimitrov Thomas Laessøe Tobias Guldberg Frøslev Bo Dalsgaard

Woody plants host diverse communities of associated organisms, including wood-inhabiting fungi. In this group, host effects on species richness and interaction network structure are not well understood, especially not at large geographical scales. We investigated ecological, historical and evolutionary determinants of fungal species richness and network modularity, that is, subcommunity structu...

Journal: :Pakistan journal of scientific and industrial research 2021

Varied floristic works relevant to Kashmir Himalaya were thoroughly examined compile taxonomic contributions of various taxonomists viz. a diversity in gymnosperms this region. Extensive field surveys and standard methods used locate, collect, identify prepare an updated list the target group. A total 25 species belonging 13 genera 6 families 4 orders have been documented from Himalaya. Wild ar...

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