Results 141 to 150 of about 340,517 (405)

Long‐Term Effects of Low‐Drop Grade Control Structures on Channel Evolution in the Yazoo River Basin

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Channel incision is a widespread problem, especially in river basins that have an extensive history of channel alterations. Because channel incision causes large ecological and economic consequences, the prevention of continued migration of headcuts, defined as a steep change in stream gradient over a short reach, has been the focus of many ...
Nicky M. Faucheux   +2 more
wiley   +1 more source

Pared-down landscapes in Antarctica [PDF]

open access: yes, 1971
The frigid-arid climate that now prevails in ice-free parts of Victoria Land, Antarctica, inhibits glacial erosion. If certain landscapes, more or less remote from the great troughs of outlet glaciers, have been glaciated in the past, as seems very ...
Cotton, C.A., Wilson, A.T.
core   +1 more source

Climate‐induced shifts in long‐term tropical tree reproductive phenology: Insights from species dependent on and independent of biotic pollination

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The dependence on biotic pollination may constrain plant phenological responses because flowering time ultimately defines reproductive success. We proposed a local‐scale study combining long‐term phenology and experimental data to evaluate how a key functional trait—the
Amanda Eburneo Martins   +3 more
wiley   +1 more source

Did Debris-Covered Glaciers Serve as Pleistocene Refugia for Plants? A New Hypothesis Derived from Observations of Recent Plant Growth on Glacier Surfaces [PDF]

open access: gold, 2007
Thomas Fickert   +4 more
openalex   +1 more source

Separate and synergistic anti‐herbivore effects of non‐glandular trichomes and leaf chemistry in a desert plant

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant defence phenotypes commonly integrate physical and chemical traits that may act synergistically against herbivores, but empirical evidence for synergy as a defence strategy remains limited.
Rosemary A. E. Glos   +2 more
wiley   +1 more source

Eccentricity Paces Late Pleistocene Glaciations

open access: yesGeophysical Research Letters
Late Pleistocene glacial terminations are caused by rising atmospheric CO2 occurring in response to atmospheric and ocean circulation changes induced by increased discharge from Northern Hemisphere ice sheets.
T. Blackburn, S. Kodama, G. Piccione
doaj   +1 more source

Climate stability drives multidimensional nestedness of amphibian assemblages in a Chinese sky island system

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The nested subset pattern (nestedness) has been widely used to explain species distributions in island and fragmented systems. Mountain sky islands serve as critical natural laboratories for understanding the evolutionary consequences of geographic isolation and climate
Caiwen Zhang   +5 more
wiley   +1 more source

Investigations of paleogeographic variations on the basis of the stratotype section of Viatovo at the Lower Danube

open access: yesHungarian Geographical Bulletin, 2012
The Plio-Pleistocene changes of paleogeographic environment in the Lower Danube Basin were investigated with the involvement of new granulometric analytical methods.
Éva Kis   +5 more
doaj  

A late Middle Pleistocene Denisovan mandible from the Tibetan Plateau

open access: yesNature, 2019
Fahu Chen   +18 more
semanticscholar   +1 more source

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