Results 91 to 100 of about 685,470 (225)

Stable isotope analysis of freshwater gastropod carbonates from Swanscombe: Insights into climate stability and seasonality during MIS 11c

Journal of Quaternary Science, EarlyView.
ABSTRACT Stable isotope analyses of freshwater mollusc carbonate can record environmental conditions at the time of mineralisation, yet this technique remains underused in British Middle Pleistocene fluvial sequences, despite the abundance of fossil shell material in these deposits.
Jennifer E. Sherriff, Ian Candy, Adrian P. Palmer, Danielle C. Schreve, Tom S. White   +4 more
wiley   +1 more source

Ngarrawa (mound spring) sediments as archives of Holocene environmental change in arid central Australia: Insights from Itrax XRF scanning

Journal of Quaternary Science, EarlyView.
ABSTRACT Central Australia's ngarrawa, or ‘mound springs’, are unique hydrological systems that serve as some of the only near‐permanent sources of water and continuous sediment deposition in Australia's arid interior. As such, they hold significant potential as palaeo‐climate and ‐environmental archives in a region where many aspects of past climate ...
Fletcher C. Nixon, Jonathan J. Tyler, Patricia S. Gadd, Quan Hua   +3 more
wiley   +1 more source

Utilizing Insects as Bioindicators: An Approximation for Conservation in Urban Lentic Ecosystems in Central Chile

Insects
This study considered using insect families as bioindicators to establish the health status of an ecosystem of lentic bodies. The water quality in urban lentic bodies in the Metropolitan Region, Chile, was evaluated from aquatic insect family assemblages
Sebastián Rodríguez, Amanda Huerta, Álvaro Palma, Francisco Vicencio, Jaime E. Araya   +4 more
doaj   +1 more source

Occurrence of microplastics in edible aquatic insect Pantala sp. (Odonata: Libellulidae) from rice fields. [PDF]

PeerJ, 2022
Maneechan W, Prommi TO.
europepmc   +1 more source

Micellar and Solubilization Properties of Biological Surfactant Surfactin

Journal of Surfactants and Detergents, EarlyView.
ABSTRACT We studied aqueous solutions of surfactin in the concentration range of 0.001–200 g/L using NMR diffusometry, tensometry and optical microscopy methods. According to tensometry data, the system forms monolayers of surfactant molecules at the water‐air phase boundary at C = 0.02 g/L.
Victor P. Arkhipov, Ruslan Arkhipov, Natalia Kuzina, Andrei Filippov   +3 more
wiley   +1 more source

Operational sex ratio bias due to sex‐specific cohort splitting in response to predation

Ecosphere
The operational sex ratio (OSR), that is, the local ratio of fertilizable females to sexually active males at any given time, is of key importance for the strength of sexual selection and the reproduction of populations.
Oliver Miler, František Marec, Dietmar Straile   +2 more
doaj   +1 more source

Use of natural ensiling additives with tropical grasses: Physicochemical properties, in vitro fermentation characteristics, and microbial community diversity indices

JSFA reports, EarlyView.
Abstract Background Improving feed quality, availability, and cost‐effectiveness is a big challenge for livestock to ensure animal‐derived food for nutritional security. The aim of the study was to find out how some natural ensiling additives affect physicochemical properties, proximate composition, microbial population, in vitro fermentation ...
A. B. M. Rubayet Bostami, A. S. M. Selim, M. Al‐Mamun, K. M. Islam, M. D. Hossain   +4 more
wiley   +1 more source

Radiocesium-bearing microparticles cause a large variation in 137Cs activity concentration in the aquatic insect Stenopsyche marmorata (Tricoptera: Stenopsychidae) in the Ota River, Fukushima, Japan. [PDF]

PLoS One, 2022
Ishii Y, Miura H, Jo J, Tsuji H, Saito R, Koarai K, Hagiwara H, Urushidate T, Nishikiori T, Wada T, Hayashi S, Takahashi Y.   +11 more
europepmc   +1 more source

White light reduces flight height of birds in low‐density migration corridor

The Journal of Wildlife Management, EarlyView.
We conducted an experiment to better understand the effects of artificial light at night treatments of varying spectral power distributions on in‐flight migratory bird behavior as measured by a portable radar. Broad‐spectrum white light emissions reduced avian flight height as compared to dark periods and more than other light treatments.
Miguel F. Jimenez, Carrie Ann Adams, Carolyn S. Burt, Brian D. Gerber, Jeremy White, Riana Zinn, Kyle G. Horton   +6 more
wiley   +1 more source

Effects of Organic Fertilizer Substitutions on Latex Yield and Soil Fertility in Hevea brasiliensis Plantations: A Case Study in Southern Philippines

Land Degradation &Development, EarlyView.
ABSTRACT Rubber plantations can be a major source of income for small landholder farmers in rural communities across Southern Asia. However, rising fertilizer costs and progressive soil degradation threaten long‐term productivity and economic viability.
Oscar Jurado, Chengrong Chen, Johnvie B. Goloran, Adeflor Garcia, Honey B. Goloran, Xiangyu Liu, Neal W. Menzies, Yunying Fang   +7 more
wiley   +1 more source