نتایج جستجو برای: native species

تعداد نتایج: 632890  

Journal: :رستنیها 0
فرخ قهرمانی نژاد استاد گروه علوم گیاهی، دانشکده علوم زیستی، دانشگاه خوارزمی، تهران، ایران ([email protected]) امین زراعتکار دانشجوی دکتری سیستماتیک گیاهی، گروه علوم گیاهی، دانشکده علوم زیستی، دانشگاه خوارزمی، تهران، ایران احسان حسینی دانشجوی دکتری سیستماتیک گیاهی، گروه علوم گیاهی، دانشکده علوم زیستی، دانشگاه خوارزمی، تهران، ایران آرزو ابراهیم نیا دانش آموخته کارشناسی ارشد سیستماتیک گیاهی، گروه علوم گیاهی، دانشکده علوم زیستی، دانشگاه خوارزمی، تهران، ایران

a new species from iran is described and illustrated here as kickxia iranica (plantaginaceae). kickxia iranica is morphologically similar to k. commutata, a species native to mediterranean region, however it can be distinguished from the latter by leaf shape, color of corolla, habit, stem branching and length of leaf, petiole, pedicel and corolla. notes on its distribution, ecology and phenolog...

2014
Mialy Razanajatovo Christine Föhr Markus Fischer Daniel Prati Mark van Kleunen

Many animal-pollinated plant species have been introduced to non-native regions without their usual pollinators. Nevertheless, some of these alien species managed to establish reproducing naturalized populations, which might negatively affect native plants. Recent studies have shown that many naturalized alien species can readily attract native pollinators. However, it is not known whether alie...

2017
Paul W. Barnes Ronald J. Ryel Stephan D. Flint

Ongoing changes in Earth's climate are shifting the elevation ranges of many plant species with non-native species often experiencing greater expansion into higher elevations than native species. These climate change-induced shifts in distributions inevitably expose plants to novel biotic and abiotic environments, including altered solar ultraviolet (UV)-B (280-315 nm) radiation regimes. Do the...

2015
Liba Pejchar

The widespread loss of native species and the introduction of non-native species has important consequences for island ecosystems. Non-native species may or may not functionally replace the role of native species in ecological processes such as seed dispersal. Although the majority of Hawaii's native plants require bird-mediated seed dispersal, only one native frugivore, Omao (Myadestes obscuru...

Journal: :Conservation biology : the journal of the Society for Conservation Biology 2011
Katharine L Stuble L Katherine Kirkman C Ronald Carroll Nathan J Sanders

The degree to which changes in community composition mediate the probability of colonization and spread of non-native species is not well understood, especially in animal communities. High species richness may hinder the establishment of non-native species. Distinguishing between this scenario and cases in which non-native species become established in intact (lacking extensive anthropogenic so...

2012
Cascade J. B. Sorte Ines Ibáñez Dana M. Blumenthal Nicole A. Molinari Luke P. Miller Edwin D. Grosholz Jeffrey M. Diez Carla M. D’Antonio Julian D. Olden Sierra J. Jones Jeffrey S. Dukes

Cascade J. B. Sorte,* Ines Ibáñez, Dana M. Blumenthal, Nicole A. Molinari, Luke P. Miller, Edwin D. Grosholz, Jeffrey M. Diez, Carla M. D’Antonio, Julian D. Olden, Sierra J. Jones and Jeffrey S. Dukes Abstract Climate change and biological invasions are primary threats to global biodiversity that may interact in the future. To date, the hypothesis that climate change will favour non-native spec...

2018
Haihao Yu Ligong Wang Chunhua Liu Shufeng Fan

Understanding the biotic and abiotic factors that influence the susceptibility of a community to invasion is beneficial for the prediction and management of invasive species and the conservation of native biodiversity. However, the relationships between factors and invasibility of a community have not been fully confirmed, and the factors most associated with the susceptibility of a community t...

B. Jalali, M. Aghazadeh Meshgi S. Shamsi

In the present study, we reported infection with eighteen species of the genus Dactylogyrus, belong to thefamily Dactylogyridae from five breeder fish species, including common carp (Cyprinus carpio), grass carp(Ctenopharyngodon idella), silver carp (Hypophthalmichthys molitrix), big head carp (Hypophthalmichthysnobilis) and black carp (Myelopharyngodon piceus) which introduced and imported to ...

Journal: :Ecology 2015
Wayne Dawson Noëlie Maurel Mark van Kleunen

In a recent article in Ecology, Leffler et al. (2014) presented a potentially new perspective on the importance of trait differences between native and invasive exotic plants in explaining invasions in local native communities. The new perspective brought forward is that, if trait differences between invasive and native species are likely to be important in explaining exotic plant invasion, the...

ژورنال: علوم آب و خاک 2015
رجالی, فرهاد, افیونی , مجید , خوشگفتارمنش , امیرحسین , درستکار, وجیهه, مصدقی , محمدرضا,

Arbuscular mycorrhizal fungi (AMF) are widespread endosymbionts in terrestrial ecosystems and their exudates have important effects on soil properties. A greenhouse experiment was conducted with six AMF treatments including four exotic species inoculums (Funneliformis mosseae ,Claroideoglomus claroideum  and Rhizophagus irregularis and a mixed isolate of three species), one mixed native AMF spe...

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