Results 101 to 110 of about 745,483 (305)

Balancing mechanics and metabolism: Elevational variation in the microanatomy of hummingbird flight muscle

The Anatomical Record, EarlyView.
Abstract Factors varying along elevational gradients impose strong aerodynamic and physiological constraints on powered flight, yet the internal microanatomical variation associated with elevational context in animals under such conditions remains poorly understood.
Juan Camilo Ríos‐Orjuela, Juliana Novoa‐Páramo, Maria Juliana Villalba Patiño, Zayra Viviana Garavito‐Aguilar, Alejandro Rico‐Guevara, Carlos Daniel Cadena   +5 more
wiley   +1 more source

Asymmetrical local adaptation of maize landraces along an altitudinal gradient

Evolutionary Applications, 2008
AbstractCrop landraces are managed populations that evolve in response to gene flow and selection. Cross‐pollination among fields, seed sharing by farmers, and selection by management and environmental conditions play roles in shaping crop characteristics. We used common gardens to explore the local adaptation of maize (Zea mays ssp.
Mercer, Kristin, Martínez-Vásquez, Ángel, Perales, Hugo R   +2 more
openaire   +2 more sources

Leaf morphological and physiological responses of Quercus aquifolioides along an altitudinal gradient

, 2006
Quercus aquifolioides Rehder & E.H. Wilson, an evergreen alpine and subalpine shrub species, occupies a wide range of habitats on the eastern slopes of the Himalaya in China. In this study, we measured leaf morphology, nitrogen content and carbon isotope
Berninger, F, Luukkanen, A, Zhang, XJ, Li, CY, Liu, XL, Li, CY, Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China.   +5 more
core  

Methane and nitrous oxide fluxes across an elevation gradient in the tropical Peruvian Andes [PDF]

, 2014
The authors acknowledge the agencies that funded this research; the UK Natural Environment Research Council (NERC; joint grant references NE/H006583, NE/H007849 and NE/H006753) and the Norwegian Agency for Development Cooperation (Norad; via a sub ...
L. P. Huaraca Quispe, Meir, P., Y. A. Teh, Morley, N., E. Baggs, Smith, P., Huaraca Quispe, L. P., Huaraca- Quispe, Lidia P., S. Jones, Huaraca Quispe, L.P., M. Richards, Baggs, E., Teh, Y. A., Diem, T., Meir, Patrick, Teh, Y.A., P. Meir, Jones, S., P. Smith, T. Diem, N. Morley, Richards, M.   +21 more
core   +2 more sources

Evaluating Bergmann's and Allen's rules in the long bones of the eastern gray squirrel

The Anatomical Record, EarlyView.
Abstract Ecogeographical rules predict variation in body size and appendage proportions across climatic gradients, yet intraspecific tests using long bones from wild populations remain limited among small mammals. This study tests the hypothesis that eastern gray squirrels (Sciurus carolinensis) conform to Bergmann's rule, that is, body size increases ...
Tyler Blake, Habiba Chirchir
wiley   +1 more source

Pinus uncinata along an altitudinal gradient

LC-MS RAW files of Pinus uncinata along an altitudinal gradient. Publication: Rivas-Ubach et al., An outline on the chemical phenotype flexibility of forest species: an eco-metabolomics study of Pinus uncinata along an altitudinal gradient. Perspectives
Albert Rivas-Ubach
core   +1 more source

Growth of European Beech Across Altitudinal and Climatic Gradients

Abstract.
Bončina, Andrej, Trifković, Vasilije, Klopčič, Matija, Bončina, Živa   +3 more
openaire   +2 more sources

Optimizing Strategies for Non‐Invasive Prospection of Settlements in the Intertidal Zone: A Case Study From the Centre of the Drowned Medieval Village of Tolsende (Scheldt Estuary, the Netherlands)

Archaeological Prospection, EarlyView.
ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet, Sarah Bäumler, Stefan Krojer, Jeroen Verhegge, Wim De Clercq, Philippe De Smedt, Wouter H. Maes, Bente S. Majchczack, Immo Trinks, Dennis Wilken   +9 more
wiley   +1 more source

Deciphering the Patterns and Drivers of Tardigrade Diversity Along Altitudinal Gradients

Molecular Ecology
ABSTRACT Altitudinal gradients offer a unique opportunity to understand the drivers of species richness, as mountain regions cover vast areas and contribute disproportionately to global terrestrial biodiversity. However, such gradients are often studied without considering the role of microhabitats, which introduce fine‐scale ...
Bartłomiej Surmacz, Diego Fontaneto, Grzegorz Vončina, Daniel Stec   +3 more
openaire   +3 more sources

Sex-related differences in leaf morphological and physiological responses in Hippophae rhamnoides along an altitudinal gradient

, 2007
In most woody plants, leaf morphological and physiological characteristics are extremely variable across environmental gradients, particularly across altitudinal gradients. Hippophae rhamnoides L., a dioecious and deciduous shrub species, occupies a wide
Berninger, F, Zang, RG, Li, CY, Xu, G, Li, CY, Chinese Acad Sci, Chengdu Inst Biol, POB 416, Chengdu 610041, Peoples R China., Korpelainen, H   +5 more
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