Results 61 to 70 of about 39,574 (242)

Bridging a biogeographic 'gap' : microfossil evidence for the quillwort Isoetes on the Cumberland Plain west of Sydney during the early Colonial period [PDF]

, 2013
Fossil spores preserved on historical archaeological sites at Parramatta and Richmond indicate that two or more species of the quillwort genus Isoetes (family Isoetaceae) were growing along rivers on the Cumberland Plain, west of Sydney, during the late ...
Casey, Mary, Macphail, Mike
core  

A twofold development and demise of pine stands in the Netherlands during the Allerød interstadial: two hypotheses to explain a link to climate change recorded in Greenland ice

Journal of Quaternary Science, EarlyView.
ABSTRACT The second half of the Allerød interstadial in the Netherlands is characterised by pine forest. Excavated trunks of 165 pine trees at Leusden‐Den Treek in the central Netherlands (LETR16) were dated by dendrochronology and radiocarbon. Two chronologically separated pine forest phases occurred during relatively warm periods as recorded in ...
Wim Z. Hoek, Jos Bazelmans, Otto Brinkkemper, Petra Doeve, Bas van Geel   +4 more
wiley   +1 more source

Kapadokya yöresi Geç Holosen Paleovejetasyon koşullarının fosil polen kayıtları ile mekânsal ve zamansal bağlamda rekonstrüksiyonu

Coğrafi Bilimler Dergisi, 2018
This study aims to make a new methodological approach to the interpretations and inferences about the paleo-environmental conditions by using the existing fossil polen records in the Cappadocia Region and give a holistic perspective.
Çetin Şenkul, Ahmet Köse
doaj   +1 more source

Recent palaeoenvironmental evidence for the processing of hemp (Cannabis sativa L.) in eastern England during the medieval period [PDF]

, 2005
[FIRST PARAGRAPH] Hemp (Cannabissativa L.)— whose origins as a domesticated plant probably lie in C.Asia — has been cultivated in England since at least a.d.800 (and before this perhaps in the Roman Period), mainly for its ¿bre, which was used to make ...
Bunting, M.J., Carrott, J., Gearey, B.R., Hall, A.R., Kenward, H., Lillie, M.C.   +5 more
core   +1 more source

Digitizing collections to unlock the full potential of palynology: A case study with the Smithsonian palynology collection

PLANTS, PEOPLE, PLANET, EarlyView.
Large palynological collections have been built over decades and contain vital information. However, they are often difficult to access and use effectively. What is the point of having such collections if they are not fully utilizable? To solve this problem, we digitized the Smithsonian palynological collection using both light and confocal microscopy.
Carlos Jaramillo, Surangi W. Punyasena, Daurys de Alba, Roxana Alveo, Angelica Arcila, Jorge Bermudez, Jonatan Bustos, Dayenari Caballero‐Rodriguez, Karen Cardenas, David Caro, Francy Carvajal, Ivonne Marcela Castañeda, Shara Chaves, Carlos D'Apolito, Andres Diaz‐Jaramillo, Laura Diaz, Luisa Gomez, Mauricio León‐Carreño, Paula Lopera, Maria Alejandra Lopez, Priscila Lopez, Luke Mander, Jhonatan Martínez Murcia, Carlos Moreno, Enrique Moreno, Enrique Neyra, Brenda Orosco, Jhon Ortiz, Natalia Ossa, Natalia Ovalle, Carolina Ovalle, Angelo Plata, Ingrid Romero, Bruno Scudeiro, Silane A. F. da Silva Caminha, Axel Tejada‐Fajardo, Vinicius Do Valle, Thiago Wood   +37 more
wiley   +1 more source

Fossil Pollen in Scottish Tertiary Coals [PDF]

Nature, 1936
THE application of Raistrick's method1 of extracting microspores from Carboniferous coals to lignites of Tertiary age from Mull and Morvern, Argyllshire, has revealed that these inferior coals are rich in pollen in a good state of preservation.
openaire   +1 more source

First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina [PDF]

, 2014
Thirty-four taxa were documented from six palynologically productive samples of the La Yesera Formation (Brealito and Don Bartolo Members) in the Pucará locality (Salta Province, northwestern Argentina).
Narvaez, Paula Liliana, Pramparo, Mercedes Beatriz, Sabino García, Ignacio Federico   +2 more
core   +1 more source

The shared benefits of fallen fruits: A novel mechanism stabilizing a nursery pollination mutualism between Sambucus and kateretid beetles

PLANTS, PEOPLE, PLANET, EarlyView.
Understanding how cooperative interactions remain stable matters for biodiversity because many plants rely on specialist insects that can also impose reproductive costs. We studied the interaction between Sambucus sieboldiana and seed‐consuming Heterhelus beetles through detailed field observations and pollination experiments.
Suzu Kawashima, Hidehito Okada, Sadatomo Hisamatsu, Kenji Suetsugu   +3 more
wiley   +1 more source

Subfossil spore-pollen spectra of mountainous areas: the case of the Kamchatka Peninsula [PDF]

Геосистемы переходных зон
The article presents the results of the composition analysis of 27 recent (surface) pollen assemblages collected in typical plant communities in the northern part of the Central Kamchatka Depression and on the surrounding slopes of the Sredinny Range ...
Mukhametshina, Ekaterina O.
doaj   +1 more source

Taxon Cycles in Neotropical Mangroves

Plants, 2023
The concept of the taxon cycle involves successive range expansions and contractions over time, through which a species can indefinitely maintain its core distribution. Otherwise, it becomes extinct.
Valentí Rull
doaj   +1 more source