Results 41 to 50 of about 81,222 (227)

Potential and historical Uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agriculture [PDF]

open access: yes, 2002
This report was presented at the UK Organic Research 2002 Conference. Bracken is considered a serious weed species, due to its toxic constituents and negative impacts on agriculture and conservation.
Donnelly, Eric   +2 more
core  

The impact of urbanisation on social behaviour: a comprehensive review

open access: yesBiological Reviews, EarlyView.
ABSTRACT Urbanisation is a key driver of global environmental change and presents animals with novel stressors and challenges. It can fundamentally influence social behaviour and has the potential to reshape within‐ and between‐species social interactions. Given the role of social behaviour in reproductive fitness and survival, understanding how social
Avery L. Maune   +2 more
wiley   +1 more source

Chemotaxis of Bracken Spermatozoids : The Role of Bimalate Ions [PDF]

open access: yes, 1958
1. Bracken spermatozoids are chemotactically attracted by malic acid salts and in a pH gradient aggregate between pH 3.5 and 5.6. 2. This response to pH occurs only when the sperm suspension contains malate. 3. At higher pH's, the response to an H+
Brokaw, C. J.
core   +1 more source

Subterranean environments contribute to three‐quarters of classified ecosystem services

open access: yesBiological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola   +30 more
wiley   +1 more source

Differences in bird and bat traits, seed-dispersal interactions and functions between tropical montane forest and bracken-dominated areas

open access: yesFrontiers in Ecology and Evolution
Most tropical plant species depend on animals to disperse their seeds. Seed dispersal by animals allows plants to colonize new sites in deforested habitats helping to accelerate forest recovery.
Cesar Mayta   +13 more
doaj   +1 more source

Potential uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agrculture [PDF]

open access: yes, 2006
Bracken is a weed species due to its toxic nature and adverse effects on agriculture and ecology. This poster reviews research into historical uses for fronds and litter harvested as part of organically approved control methods.
Donnelly, E, Robertson, J, Robinson, D
core  

The quantum Casimir operators of $\Uq$ and their eigenvalues

open access: yes, 2010
We show that the quantum Casimir operators of the quantum linear group constructed in early work of Bracken, Gould and Zhang together with one extra central element generate the entire center of $\Uq$.
Hopkins M J   +5 more
core   +1 more source

Impact of the Redheaded Pine Sawfly (Hymenoptera: Diprionidae) on Young Red Pine Plantations [PDF]

open access: yes, 2017
The ecology of the redheaded pine sawfly was studied relative to its impact on red pine plantations. An ecological model, which formed the basis for socioeconomic analysis, was constructed.
Averill, Robert D   +2 more
core   +2 more sources

Genomic and Immune Correlates of EZH2 Expression and Activity in Olfactory Neuroblastoma

open access: yesHead &Neck, EarlyView.
ABSTRACT Purpose Olfactory neuroblastoma (ONB) is a rare sinonasal malignancy with limited therapeutic options in the recurrent/metastatic setting; little is known regarding its responsiveness to immunotherapy. Inhibition of enhancer of zeste homolog 2 (EZH2) has been shown to improve T‐cell‐mediated killing and susceptibility to immune checkpoint ...
Elisabetta Xue   +12 more
wiley   +1 more source

Facilitative and competitive effects of bracken fronds and litter on tree seedling recruitment

open access: yesFrontiers in Ecology and Evolution
IntroductionTropical montane forests are diverse ecosystems increasingly threatened by land-use change and frequent uncontrolled fires caused by humans.
Cecilia L. López   +11 more
doaj   +1 more source

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