Results 31 to 40 of about 39,574 (242)

Sensitivity of the grassland-forest ecotone in East African open woodland savannah to historical rainfall variation [PDF]

, 2014
. Fossil pollen records provide key insight into the sensitivity of terrestrial ecosystems to climate change at longer time scales. However, tracing vegetation response to relatively modest historical climate fluctuations is often complicated by the ...
Gelorini, Vanessa, Ssemmanda, Immaculate, Verschuren, Dirk   +2 more
core   +1 more source

Miocene palynoflora from the KRAM-P 218 leaf assemblage from the Bełchatów Lignite Mine (Central Poland)

Acta Palaeobotanica, 2016
During a palynological analysis of four samples from the Bełchatów KRAM-P 218 collection of plant macroremains 95 fossil species of sporomorphs were identified. Among the non-pollen palynomorphs was the fossil species Desmidiaceaesporites cosmarioformis,
Worobiec Elżbieta, Worobiec Grzegorz
doaj   +1 more source

Island ecosystem responses to the Kuwae eruption and precipitation change over the last 1600 years, Efate, Vanuatu

Frontiers in Ecology and Evolution, 2023
IntroductionIslands of the Southwest Pacific are exposed to geologic and climate-related disturbances that occur on a range of timescales and which probably affect, to varying degrees, their terrestrial ecosystems.
Nichola A. Strandberg, David A. Sear, Peter G. Langdon, Shane J. Cronin, Catherine T. Langdon, Ashley E. Maloney, Ashley E. Maloney, Samantha L. Bateman, Thomas Bishop, Ian W. Croudace, Melanie J. Leng, Melanie J. Leng, Julian P. Sachs, Matiu Prebble, Matiu Prebble, William D. Gosling, Mary Edwards, Sandra Nogué, Sandra Nogué, Sandra Nogué   +19 more
doaj   +1 more source

Towards a radiocarbon chronology of the Late-Glacial: Sample selection strategies [PDF]

, 2001
This paper outlines a dating program designed to test the reproducibility of radiocarbon dates on different materials of Late-Glacial age (plant macrofossils, fossil beetle remains, and the "humic" and "humin" chemical fractions of limnic sediments ...
Bengtsson, Coope, Coope, Donahue, Harkness, Hodgins, Lowe, Lowe, Lowe, Moore, Pennington, Pennington, Southon, Sutherland, Switsur   +14 more
core   +1 more source

The ultrastructure of fossil gymnosperm pollen [PDF]

Bulletin de la Société Botanique de France. Actualités Botaniques, 1987
SummaryThe ultrastructure of fossil gymnosperm pollen is reviewed based on studies of in situ grains. The following groups contain taxa that have been investigated at the ultrastructural level: Lyginopteridales, Medullosales, Callistophytales, Corystospermales, Caytoniales, Cordaitales, Voltziales, Coniferales, Cycadeoidales, Pentoxylales and ...
Thomas N. Taylor, Edith L. Taylor
openaire   +1 more source

Pollen morphology of Nothofagus (Nothofagaceae, Fagales) and its phylogenetic significance [PDF]

, 2016
Nothofagaceae (southern beeches) are a relatively small flowering plant family of trees confined to the Southern Hemisphere. The fossil record of the family is abundant and it has been widely used as a test case for the classic hypothesis that Antarctica,
Barreda, Viviana Dora, Fernández, Damián Andrés, Palazzesi, Luis, Santamarina, Patricio Emmanuel, Tellería, María Cristina   +4 more
core   +2 more sources

Relationship of Surface Pollen with Climate and Vertical Vegetation Communities in Subtropical Mountainous in Southern China

Redai dili, 2022
Pollen analysis is one of the environmental proxies useful for quantitative reconstruction of paleoecology and paleoclimate, and the establishment of a quantitative relationship between surface pollen and vegetation is crucial for accurate interpretation
Quan Xiaowen, Huang Kangyou, Shui Kunchun, Li Hongwei, Xie Dehao, Zuo Jintang, Cen Caifeng, Zheng Zhuo   +7 more
doaj   +1 more source

Palynostratigraphy and palynofacies of the early Eocene Gurha lignite mine, Rajasthan, India [PDF]

, 2016
A 105 m early Eocene section exposed in the Gurha mine in the Nagaur-Ganganagar Basin, Rajasthan, India, archiving remains of equatorial vegetation at a time of extreme global warmth and close to the onset of the India-Eurasia collision, is investigated ...
Aggarwal, Anumeha Shukla, Batten, Biswas, Clausing, Dayal, Eberle, Frederiksen, Germeraad, Grice, Harley, Hart, Kar, Kar, Kar, Kar, Knights, Kumar, Kumar, Kumar, Lal, Madhav Kumar, Martin, Masron, Molnar, Morley, Muller, Norton, Pocock, Priyanka Monga, R.C. Mehrotra, Raju, Rao, Rao, Rao, Rawat, Robert A. Spicer, Roy, Sah, Shukla, Teresa E.V. Spicer, Thanikaimoni, Traverse, Tripathi, Tyson, Van Geel, Wang, Zachos, Zachos, Zarzen, Zarzen   +50 more
core   +1 more source

Fungal spores in Caribbean mangrove sediments, dataset from southeastern Mexico

Data in Brief, 2023
Most paleoecological investigations use different biotic or abiotic proxies for climate and environmental reconstructions. Although fossil pollen is one of the most used biological proxies, Non-Pollen Palynomorphs (NPPs), especially fungal spores and ...
Cynthia Karina Can-Canales, Gerald A. Islebe, Alicia Carrillo-Bastos, Nuria Torrescano-Valle, Alejandro Antonio Aragón-Moreno   +4 more
doaj   +1 more source

Spatially Aware Dictionary Learning and Coding for Fossil Pollen Identification

, 2016
We propose a robust approach for performing automatic species-level recognition of fossil pollen grains in microscopy images that exploits both global shape and local texture characteristics in a patch-based matching methodology.
Fowlkes, Charless, Kong, Shu, Punyasena, Surangi   +2 more
core   +1 more source