Results 81 to 90 of about 31,957 (256)

Revisión taxonómica del complejo de Centaurea cyanus L. (Centaurea sect. Cyanus, Asteraceae) en la Península Ibérica [PDF]

open access: yes, 2010
Revisión taxonómica del complejo de Centaurea cyanus L. (Centaurea sect. Cyanus, Asteraceae) en la Península Ibérica. Se ha efectuado la revisión taxonómica de Centaurea sect. Cyanus en la Península Ibérica.
Devesa Alcaraz, Juan Antonio   +1 more
core   +1 more source

Using constructed value of information to identify key uncertainties for a decision tree analysis in iterative structured decision making

open access: yesConservation Science and Practice, Volume 8, Issue 2, February 2026.
Conservation decisions are sometimes delayed due to pervasive uncertainty and the perception that more information is needed before acting, but postponing decisions can be costly. We propose that using constructed value of information within an iterative structured decision‐making process can help identify key uncertainties that can subsequently be ...
Laura M. Keating‐Elske   +11 more
wiley   +1 more source

Ornamental Representatives of the Genus Centaurea L. as a Pollen Source for Bee Friendly Gardens

open access: yesJournal of Apicultural Science, 2014
The flowering phenology and pollen production of three ornamental Centaurea species were investigated in the years 2009 and 2012-2013. The study objects, Centaurea montana L.
Denisow Bożena   +3 more
doaj   +1 more source

Investigating the root plasticity response of Centaurea jacea to soil water availability changes from isotopic analysis.

open access: yesNew Phytologist, 2019
-Root water uptake is a key ecohydrological process for which a physically-based understanding has been developed in the past decades. However, due to methodological constraints, knowledge gaps remain about the plastic response of whole plant root ...
Kathrin Kühnhammer   +9 more
semanticscholar   +1 more source

GATHERING THE HARVEST: THE COLLECTION AND TRANSPORTATION OF AGRICULTURAL PRODUCE IN ROMAN CAMBRIDGESHIRE AND PETERBOROUGH

open access: yesOxford Journal of Archaeology, Volume 45, Issue 1, Page 68-92, February 2026.
Summary When Rome colonized Britain, it created a transport network spanning the province. This transformed the Iron Age economy, creating large new markets which in turn supported specialized manufacturing. This article explores the impact of transportation on Roman agriculture – the core of the Romano‐British economy.
Rob Wiseman   +2 more
wiley   +1 more source

Sesquiterpene lactones from the Yugoslavian wild growing plant families asteraceae and apiaceae [PDF]

open access: yesJournal of the Serbian Chemical Society, 1999
1. Introduction 2. Results 3. Asteraceae 3.1. Genus Artemisia L. 3.1.1. Artemisia annua L. 3.1.2. Artemisia vulgaris L. 3.1.3. Artemisia absinthium L. (warmwood) 3.1.4. Artemisia scoparia W. et K. 3.1.5. Artemisia camprestris L. 3.2.
Milosavljević Slobodan   +2 more
doaj   +1 more source

Biological corridors are crucial habitat features that boost biodiversity in agroecological systems of Argentina

open access: yesEcological Solutions and Evidence, Volume 7, Issue 1, January–March 2026.
Our work shows for the first time in the region that biological corridors increase biodiversity and promote interactions between different components of the production system, using a methodology never before used in Argentina such as the Griffon index.
Paula Taraborelli   +4 more
wiley   +1 more source

Pol‐NIC: An open database on pollen nutrients, imaging, and contaminants

open access: yesEcological Solutions and Evidence, Volume 7, Issue 1, January–March 2026.
Pollen is a key component of pollinators' nutrition, yet information on its nutrient composition is largely missing from floral trait datasets. These data paper compiles existing data for 283 plant species and adds new multidimensional analyses of cultivated and wild plants to address major knowledge gaps, along with photos of pollen grain morphology ...
Amélie Morin   +9 more
wiley   +1 more source

Calcium oxalate crystals in some species of the Tribe Cardueae (Asteraceae)

open access: yesBotan‪ical Sciences, 2016
In this study, calcium oxalate (CaOx) crystals in the tissues and organs of 18 species that belong to tribe Cardueae (Asteraceae), Arctium minus, Silybum marianum, Cirsium vulgare, Cirsium creticum, Cirsium arvense, Carduus nutans, Carduus candicans ...
Ciler Kartal-Meric
doaj   +1 more source

Patterns of co-occurrence of rare and threatened species in winter arable plant communities of Italy [PDF]

open access: yes, 2020
Detecting patterns of species co-occurrence is among the main tasks of plant community ecology. Arable plant communities are important elements of agroecosystems, because they support plant and animal biodiversity and provide ecosystem services.
ABBATE, Giovanna   +2 more
core   +1 more source

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