Results 111 to 120 of about 391,290 (310)

Landscape-scale drivers of glacial ecosystem change in the montane forests of the eastern Andean flank, Ecuador [PDF]

, 2018
Understanding the impact of landscape-scale disturbance events during the last glacial period is vital in accu- rately reconstructing the ecosystem dynamics of montane environments. Here, a sedimentary succession from the tropical montane cloud forest of
Aalto, Angela L. Coe, Baker, Bakker, Bennett, Bennett, Blunier, Bogotá-A, Bond, Bronk Ramsey, Bruijnzeel, Bush, Bush, Bush, Bussmann, Campbell, Churchill, Clark, Clark, Coblentz, Colinvaux, Colinvaux, Colinvaux, Coltorti, Corlett, Crausbay, Cugny, Cárdenas, Cárdenas, Daniau, Davis, Encarni Montoya, Enzweiler, Faegri, Fahey, Galeas, Gelorini, Gill, Gosling, Gosling, Gosling, Grau, Groot, Grubb, Grubb, Grubb, Hall, Hamilton, Hanselman, Harling, Heiri, Hooghiemstra, Juggins, Keen, Krug, Liu, Loughlin, López-Vila, Marchant, Marshall, Mayle, Montoya, Montoya, Moore, Mosblech, Mourguiart, Neill, Neill, Newnham, Nicholas J.D. Loughlin, Patricia Mothes, Pauline Gulliver, Reimer, Roubik, Rull, Rull, Rull, Rull, Sanchez Goñi, Sarmiento, Sarmiento, Sierra, Stern, Stockmarr, Thomas, Urrego, Urrego, Urrego, Valencia, Valencia, van der Hammen, van der Werf, van Geel, van Geel, van Geel, van Geel, van Geel, van Geel, van Geel, van Smeerdijk, Vandergoes, Webster, Weng, Weng, Whitlock, William D. Gosling, Williams   +106 more
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Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source

Effects of therapeutants and temperature on pollen germination, pollen tube growth and fruit set in fruit crops : a thesis presented in partial fulfilment of the requirements for the degree of Master of Horticultural Science at Massey University [PDF]

, 1980
This study involved assessments of therapeutant effects on pollination and fruit set; of temperature effects on pollen germination and pollen tube growth in apples, peaches and kiwifruits; of flowerage effects on pollen germination and pollen tube growth
Manandhar, Dwarika Narayan
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Verhuellia is a segregate lineage in Piperaceae: more evidence from flower, fruit and pollen morphology, anatomy and development [PDF]

, 2010
Background and Aims The perianthless Piperales, i.e. Saururaceae and Piperaceae, have simple reduced flowers strikingly different from the other families of the order (e.g. Aristolochiaceae).
Samain, Marie-Stéphanie, Vrijdaghs, Alexander, Hesse, Michael, Goetghebeur, Paul, Jiménez Rodríguez, Francisco, Stoll, Alexandra, Neinhuis, Christoph, Wanke, Stefan   +7 more
core   +2 more sources

Pollen [PDF]

Biologie in unserer Zeit, 2012
AbstractUnser Titelbild zeigt – nicht maßstabsgetreu – Beispiele für Pollenformen der Blütenpflanzen. In der Spirale von innen nach außen (vom kleinsten zum größten Pollenkorn) sind zu sehen: Pistia stratiotes, Ulearum sagittatum, Monstera deliciosa, Dracontium asperum, Symplocarpus foetidus, Amorphophallus polyanthus, Pinellia ternata, Dracunculus ...
openaire   +2 more sources

Ecology and evolution of pyrazines in insects

Biological Reviews, EarlyView.
ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk, Niklas Wahlberg, Johanna Mappes   +2 more
wiley   +1 more source

Pollen

, 2023
When you are inhaling pollen, your body has been penetrated by a little package of plant sperm. Pollen grains are multicellular organisms that contain male sex cells, and their job is to get this sperm to the egg to facilitate fertilization. For that, they hitch a ride on insects or trust their fate to wind, water, and any other moving means, including
openaire   +2 more sources

Policy and Market Mechanisms for Sustainable Finance: A Systematic Review and Research Agenda

Business Strategy and the Environment, EarlyView.
ABSTRACT Sustainable finance has emerged as a critical instrument for addressing the dual challenges of climate change and sustainable development. Nonetheless, a substantial financing gap persists, while the concept remains under‐theorized without a universally accepted definition, and empirical evidence of its effectiveness remains inconsistent and ...
Jihyung Joo, Byounguk Keum, Taewoo Roh
wiley   +1 more source

Effect of sucrose on in-vitro pollen germination of Gloriosa superba L. - a medicinal plant from the Garhwal Himalaya, India

Environment Conservation Journal, 2017
Pollen germination and pollen tube growth are prerequisites for fertilization in seed bearing plants. The present study deals with the morphology, production, pollen-ovule ratio, and effect of sucrose on in-vitro germination of pollen grains of Gloriosa ...
P. Tiwari, P. L. Uniyal , Ekta Chaudhary   +2 more
doaj   +1 more source

Preliminary study of the atmospheric pollen in "Sierra de las Nieves" Natural Park (Southern Spain) [PDF]

, 2018
‘Sierra de las Nieves’ is a Natural Park and a Biosphere Reserve located in the south of Spain. This protected area has a high diversity of ecosystems with abundant endangered species which have led it to be in ways to become a National Park.
Cabezudo, Baltasar, Picornell Rodríguez, Antonio, Recio-Criado, Maria Marta, Trigo-Perez, Maria del Mar   +3 more
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