Results 131 to 140 of about 32,393 (253)

Effects of Bioturbation by Earthworms on Litter Flammability in Young and Mature Afforested Stands

Fire
The quantity, quality, and accumulation rate of plant litter play a key role in forest floor flammability and, by extension, fire regimes. The varying foliage properties of different tree species also determine litter’s decomposition and its accumulation
Aneta Martinovská, Ondřej Mudrák, Jan Frouz   +2 more
doaj   +1 more source

Element concentrations in tissues reveal spatial structure of Atlantic walrus management stocks

The Journal of Wildlife Management, Volume 90, Issue 4, May 2026.
Differences in tissue element concentrations confirm geographic differentiation between 2 of Canada's walrus management stocks but reveal additional spatial structure within the largest stock that may have management implications. Abstract Ensuring harvested animal populations are managed at appropriate scales requires an understanding of underlying ...
Alexander M. Jardine, Jennifer F. Provencher, Mary Gamberg, Cory J. D. Matthews   +3 more
wiley   +1 more source

New ichnological findings in Hauterivian sandstones of Mountainous Adygeya

Известия высших учебных заведений: Геология и разведка
Background. Trace fossils are highly informative objects for geological investigations. However, the information about their distribution in sedimentary settings lacks completeness.
D. A. Ruban, S. O. Zorina, K. I. Nikashin, N. Mohammad   +3 more
doaj   +1 more source

Altered greenhouse gas emissions in shallow lakes invaded by common carp (Cyprinus carpio)

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Species invasions are among the most important environmental problems facing freshwater ecosystems this century, contributing to biodiversity loss and changes in ecosystem function. Freshwater lakes are an important component of the global carbon cycle and a key source of atmospheric greenhouse gases, yet the consequences of species invasions ...
Joseph S. Rabaey, Brian J. Huser, Przemyslaw G. Bajer, John A. Downing   +3 more
wiley   +1 more source

Power, competition, and the nature of history [PDF]

, 2019
Historians have debated whether pathways and events from the past to the present are influenced largely by contingency, the dependence of outcomes on particular prior conditions, or whether there is long-term emergent directional change.
Vermeij, Geerat J
core   +1 more source

Blue carbon storage and environmental influences in mangroves, Puerto Rico

Soil Science Society of America Journal, Volume 90, Issue 3, May/June 2026.
Abstract Mangrove ecosystems are important coastal carbon sinks, with soil carbon storage strongly influenced by site‐specific hydrological, sedimentary, and climatic conditions. This study quantified soil carbon stocks in two mangrove systems in Puerto Rico—La Parguera and Laguna Grande—and evaluated the relative influence of hydrology, sediment ...
Jahnelle Howe, Peter M. Groffman, William J. Hernández, Jeffery Pessutti, Shakila Merchant   +4 more
wiley   +1 more source

Oxygen, animals and aquatic bioturbation: An updated account

Geobiology, 2017
The modern biosphere owes its idiosyncratic expression to the activities of oxygen metabolizing organisms, especially animals and eukaryotes (Butterfield, 2011). And with a permanently oxygenated atmosphere established during the ~2.4 Ga Great Oxidation Event (GOE), the stage was set for their early evolutionary debut.
openaire   +3 more sources

Seafloor Sediments, Morphologic Features, and Geotechnical Properties of Harrison Bay in the Alaskan Beaufort Sea

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract Sediments on Arctic continental shelves are impacted by sea ice and ice‐related processes for up to 9 months per year. As a result, seabed morphology in cold regions can exhibit features such as ice scours which are absent on lower‐latitude shelves.
E. F. Eidam, N. Stark, J. H. Nienhuis, D. Duncan, N. Brilli, N. Kallioras, R. Smith, A. D. J. Heath   +7 more
wiley   +1 more source

Spatial and Temporal Variability of Eastern Pacific Radiocarbon and Carbon Chemistry From the Ice Age to Today

Paleoceanography and Paleoclimatology, Volume 41, Issue 5, May 2026.
Abstract Proxy records of seawater radiocarbon (14C/C) provide strong constraints on how changes in ocean ventilation contributed to the increase in atmospheric CO2 during the termination of the last ice age (≈18,000‐to‐12,000 years ago). One outstanding problem, however, is the existence of anomalously low deglacial benthic foraminiferal 14C/C in the ...
Patrick A. Rafter, Mathis P. Hain, Elsa Arellano‐Torres, Kaustubh Thirumalai, Eric J. Tappa, Maria L. Machain‐Castillo, Martin Soto‐Jimenez, Tim DeVries, Ingrid L. Hendy, Juan C. Herguera, William R. Gray, Ryan A. Green, Frank Pavia, James W. B. Rae, John R. Southon   +14 more
wiley   +1 more source

Expansion of the Eastern Tropical North Pacific Oxygen Minimum Zone During the Last Deglaciation Recorded by Planktic Foraminifera

Paleoceanography and Paleoclimatology, Volume 41, Issue 5, May 2026.
Abstract Climate change is currently driving the expansion of oxygen minimum zones (OMZs), areas of the open ocean with consistently low oxygen levels. Changes in temperature, productivity and consequent respiration, and water mass ventilation drive OMZ expansion and contraction with implications for ecosystem function and biogeochemical cycling ...
Rachel Alcorn, Jorge Feliciano Ontiveros‐Cuadras, Anjaly Govindankutty Menon, Nicolaas Glock, Eric Tappa, Janet Burke, María Luisa Machain Castillo, Catherine Davis   +7 more
wiley   +1 more source