Results 71 to 80 of about 471,764 (309)

Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain [PDF]

, 2018
Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY
Bombieri, Giulia, Cañedo, D., Delgado Sánchez, María Mar, Díaz García, J., Fernández Otero, M., Penteriani Dragone, Vincenzo, Peón Torre, Paloma, Sánchez Corominas, T., Vázquez García, P., Vázquez, V. M., Zarzo Arias, Alejandra   +10 more
core   +2 more sources

Age and gender effects on echocardiographic and histopathological cardiac phenotypes in healthy adult mice

Animal Models and Experimental Medicine, EarlyView.
This study investigated the impact of age and sex on cardiac phenotypes in healthy adult C57BL/6J mice using echocardiography and histopathological analyses. Findings revealed that female mice demonstrated more pronounced global cardiac chamber dilation during aging.
Shuang Wen, Xijia Shao, Xiulin Zhang, Ningning Zhang, Xiao Chen, Guangxin Yue, Jiangping Song   +6 more
wiley   +1 more source

Effects of graphene oxide plus external bacterial agents on accelerating poplar leaf-litter decomposition in saline–alkali soil

Frontiers in Soil Science
Poplar trees and saline–alkali soil commonly occur in northern China, especially around the Datong district in northern Shanxi. To better utilize this type of soil, it is important to know how to neutralize saline–alkali conditions and how poplar leaves ...
Jun Qiao, Jun Qiao, Jun Qiao, Jiahao Liu, Jiahao Liu, Jiahao Liu, Xiaokang Chen, Xiaokang Chen, Xianbo He, Xianbo He, Xianbo He, Jianguo Zhao, Jianguo Zhao, Jianguo Zhao, Guibin Ma   +14 more
doaj   +1 more source

Impacts of extreme winter warming events on litter decomposition in a sub-Arctic heathland [PDF]

, 2009
Arctic climate change is expected to lead to a greater frequency of extreme winter warming events. During these events, temperatures rapidly increase to well above 0 degrees C for a number of days, which can lead to snow melt at the landscape scale, loss
Bjerke, J.W., Bokhorst, S., Callaghan, T.V., Melillo, J., Phoenix, G.K.   +4 more
core   +2 more sources

Role of soft tissue and bone interactions in the developmental integration and modularity of the skull in neural crest‐specific gap junction alpha‐1 knockout mice

The Anatomical Record, EarlyView.
Abstract The vertebrate skull is composed of bones derived from neural crest cells and mesoderm. The evolutionary capacity of the skull has been linked, in part, to the emergence of neural crest cells; however, this increased capacity for evolutionary change requires that variation within neural crest‐ and mesoderm‐derived bones remains partly ...
Alyssa C. Moore, Madeline Tourigny, Diana Quinonez, Kevin Barr, Matthew W. Grol, Katherine E. Willmore   +5 more
wiley   +1 more source

Litter Production in an Area of Amazonian Terra Firme Forest. Part I.Litter - fall, Organic carbon and total Nitrogen Contents of Litter').

, 1968
In 1963 anð, L964 litter was collected in a terra firme forest near Manaus, oven-dried and shipped to Europè. The sampleswere subdivided intofour litterfractions (leaves, wood,'fruits, termite fraction), dried at 105o and weighed.
Klinge, H.
core  

Factors controlling spatio-temporal variation in carbon dioxide efflux from surface litter, roots, and soil organic matter at four rain forest sites in the eastern Amazon [PDF]

, 2007
[1] This study explored biotic and abiotic causes for spatio-temporal variation in soil respiration from surface litter, roots, and soil organic matter over one year at four rain forest sites with different vegetation structures and soil types in the ...
Aragao, L. E. O. C., Braga, A., da Costa, A. C. L., de Almeida, S. S., de Athaydes, J., Goncalves, P. H. L., Malhi, Y., Meir, P., Metcalfe, D. B., Williams, M.   +9 more
core   +1 more source

Gleaning the Rocky Shore? 2500 Years of Coastal Resource Use at Red Bluff 1, GunaiKurnai Country, SE Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Shell middens in Gippsland along the eastern half of Victoria's coastline have usually been characterised as small, short‐duration camp sites with relatively low shell densities and low taxonomic diversity. Here we present new excavation results from a dense, high‐diversity site at Red Bluff near the eastern end of GunaiKurnai Country, a ...
Patrick Faulkner, Bruno David, David M. Kennedy, Fiona Petchey, Joanna Fresløv, Ashleigh J. Rogers, Jillian Garvey, Rachel Kirby, Runjie Yuan, Russell Mullett, John Stanisic, Kyne Krusic‐Golub, V. Ruth Pullin, Matthew C. McDowell, Robert J. Skelly, Anthony Romano, Vanessa N. L. Wong, GunaiKurnai Land and Waters Aboriginal Corporation   +17 more
wiley   +1 more source

Effects of Carbon–to–Nitrogen Ratio and Temperature on the Survival of Antibiotic-Resistant and Non-Resistant Escherichia coli During Chicken Manure Anaerobic Digestion

Poultry
Anaerobic digestion (AD) is a suitable process to use manure for biogas production. During this process, antimicrobial resistant (AMR) bacteria are reduced. In this study, we investigated the reduction of extended-spectrum beta-lactamase (ESBL)-producing,
Aleksandra Atanasova, Thomas Amon, Anika Friese, Uwe Rösler, Roswitha Merle, Christiane Herrmann, Anton Kraus, Tina Kabelitz   +7 more
doaj   +1 more source

Effects of prescribed fire on Cope’s Gray Treefrog (Hyla chrysoscelis) across habitat scales and life stages [PDF]

, 2017
Fire may alter both aquatic and terrestrial habitat used by all amphibian life stages, yet, our knowledge of its effects on amphibians is primarily limited to adult responses. I present an integrated approach to test the response of Cope’s Gray Treefrog (
McDonald, Logan
core   +1 more source