Results 41 to 50 of about 22,529 (270)

Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age

Journal of Quaternary Science, EarlyView.
ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin, Gill Plunkett, Neil Ogle   +2 more
wiley   +1 more source

Type designations for three names applicable to Mexican species of Dysphania (Chenopodiaceae s. str. / Amaranthaceae s. l.), and a new combination

Ukrainian Botanical Journal
The names Ambrina dissecta, Chenopodium incisum, and Chenopodium stellatum are taxonomically assessed and their lectotypes are designated, the specimens preserved at P and GH.
Sandoval-Ortega M.H. , Zumaya-Mendoza S.   +1 more
doaj   +1 more source

Lithology and palynology of cave floor sediment cores from Wakulla Spring, Wakulla County, Florida [PDF]

, 1991
Five short bottom sediment cores taken in Wakulla Spring Wakulla County, Florida, were described lithologically and sampled for palynological study. Four of the cores were recoveredfrom sediments at the spring cave entrance (130 feet water depth).
Rupert, Frank R.
core  

Towards an ‘absolute’ timing of biostratigraphic and environmental phases from the Saalian late glacial to the Weichselian pleniglacial in central Europe—Insights from a lacustrine succession in Lichtenberg, northern Germany

Boreas, EarlyView.
Palynological records are central to the biostratigraphic subdivision of the Late Pleistocene in central Europe. Yet many interglacial and interstadial phases—such as the Eemian, Brörup and Odderade—remain only poorly constrained in time due to limited numerical dating.
Michael Hein, Thomas Kasper, Alexis Badai Samudra, Martin Theuerkauf, Markus Lothar Fischer, Neda Rahimzadeh, Maria Sekar Proborukmi, Sonja Rigterink, Agnieszka Gruszczyńska, Christian Zeeden, Simon Parfitt, David John Horne, Lucy Roberts, Dustin White, Lisa Brogmus, Hans von Suchodoletz, Tobias Lauer, Marcel Weiss, David Colin Tanner, Brigitte Urban   +19 more
wiley   +1 more source

Metabarcoding of Pollen Carried by Syrphids Reveals Novel Plant–Pollinator Interactions in a Protected Natural Area and Agricultural Sites

Entomologia Experimentalis et Applicata, EarlyView.
Using DNA metabarcoding, this study investigates pollen transported by syrphids (Syrphidae) in the Dolomiti Bellunesi National Park and agricultural sites in Northern Italy. The analysis reveals a high diversity of visited plant taxa, including previously undocumented plant–pollinator interactions.
Serena Magagnoli, Daniele Sommaggio, Claudio Ratti, Riccardo Baroncelli, Andrea Menicucci, Enrico Vettorazzo, Giovanni Burgio   +6 more
wiley   +1 more source

Pollen analysis of core DS7-1SC (Dead Sea) showing intertwined effects of climatic change and human activities in the Late Holocene [PDF]

, 2010
The Dead Sea sediment holds the archives of a complex relationship between ever-changing nature and ancient civilisations. Here the detailed pollen analyses of core DS7-1SC (off-Ein-Gedi) are presented for the first time.
Leroy, SAG
core   +1 more source

Does Seed Coating Technology Derived From Agricultural Production Hold Promise for Ecological Restoration?

Earth's Future, Volume 14, Issue 5, May 2026.
The main components of coating agents and the response of coated seeds to stress. Abstract Seed coating technology, initially developed for agricultural enhancement, demonstrates emerging potential in ecological restoration yet faces critical knowledge gaps regarding its efficacy across degraded ecosystems.
Yongning Ren, Tian Xie, Wenhao Lu, Minxuan Gao, Zhonghua Ning, Qing Wang, Yujia Zhai, Shanze Li, Baoshan Cui   +8 more
wiley   +1 more source

Atmospheric dispersion of airborne pollen evidenced by near-surface and columnar measurements in Barcelona, Spain [PDF]

, 2016
Hourly measurements of pollen near-surface concentration and lidar-derived profiles of particle backscatter coefficients and of volume and particle depolarization ratios during a 5-day pollination event observed in Barcelona, Spain, between 27 – 31 March,
Alarcón Jordán, Marta, Baldasano Recio, José María, Belmonte Soler, Jordina, Comerón Tejero, Adolfo, Izquierdo Miguel, Rebeca, Jorba i Casellas, Oriol, Linares, Concha De, Sicard, Michaël   +7 more
core   +1 more source

Rolling and Burning to Transform Woody Species Thickets and Restore Abandoned Farmland

Ecological Management &Restoration, Volume 27, Issue 2, May 2026.
ABSTRACT Woody plant encroachment is a key issue that needs to be addressed when restoring abandoned farmland previously used for livestock grazing. In a conservation context, woody shrubs can be problematic if they prevent the establishment of a desired vegetation composition and structure by outcompeting other species for light, nutrients and water ...
H. Neilly, P. Cale
wiley   +1 more source

EVALUACIÓN DEL CICLO FENOLÓGICO Y CARACTERIZACIÓN MORFOLÓGICA DE GENOTIPOS DE QUINUA (Chenopodium quinua Willd.)

Tropical and Subtropical Agroecosystems
Antecedentes: Los estudios de caracterización morfológica y determinación del ciclo fenológico de quinua en Colombia son escasos, los cuales son necesarios para la identificación de nuevos materiales de siembra.
Miguel Adolfo Pizo Ossa, Consuelo Montes Rojas, Germán Andrés Aguilera Arango, Yaneth Patricia Ramos Villafañe, Jennifer Lorena López Hoyos, Yacenia Morillo Coronado   +5 more
doaj   +1 more source