Results 121 to 130 of about 12,123 (305)

Range-based techniques for discovering optimality and analyzing scaling relationships in neuromechanical systems [PDF]

, 2009
In this paper, a method for decoupling the neuromuscular function of a set of limbs from the role morphology plays in regulating the performance of an activity is introduced.
Bradly J. Alicea
core   +2 more sources

Predation of eggs and incubating females in willow ptarmigan Lagopus l. lagopus

Fauna Norvegica
Nest predation is a major cause of reproductive loss in many ground-nesting birds. During 15 consecutive years the predation of nests and females throughout the incubation season were recorded in a willow ptarmigan Lagopus l.
Eli Munkebye, Hans Chr. Pedersen, Johan B. Steen, Henrik Brøseth   +3 more
doaj   +1 more source

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

The Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

The Neanderthal Enigma: A New Theoretical Approach [PDF]

The limited material evidence relating to Neanderthal culture has enabled scholars to give free rein to their imaginations in reconstructing the mind and society of this extinct branch of Homo. Despite their remarkable success, the Neanderthals are often
Graeme Donald Snooks
core  

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source

Dynamic Ecological System Measures [PDF]

, 2018
The system decomposition theory has recently been developed for the dynamic analysis of nonlinear compartmental systems. The application of this theory to the ecosystem analysis has also been introduced in a separate article.
Huseyin Coskun
core   +1 more source

Ecological energetics of forage fish from the Mediterranean Sea: Seasonal dynamics and interspecific differences

Deep Sea Research Part II: Topical Studies in Oceanography, 2017
Small and medium pelagic fishes play a central role in marine food webs by transferring energy from plankton to top predators. In this study, direct calorimetry was used to analyze the energy density of seven pelagic species collected over four seasons from the western Mediterranean Sea: anchovy Engraulis encrasicolus, sardine Sardina pilchardus, round
Albo-Puigserver, Marta, Muñoz, A., Navarro, Joan, Coll, Marta, Pethybridge, Heidi, Sanchez, Sébastien, Palomera, Isabel   +6 more
openaire   +4 more sources

Developmental differences in cortical bone structure in chimpanzee and human femora reflect early locomotor independence in humans

The Anatomical Record, EarlyView.
Abstract The cortical bone structure of long bone diaphyses changes throughout growth via skeletal modeling and has important implications for bone strength and structural integrity. Ontogenetic trends in diaphyseal structure have been identified in both chimpanzees and humans but it is not yet clear how these trends compare given notable differences ...
Karen R. Swan, Rachel Ives, Zewdi J. Tsegai, Louise T. Humphrey   +3 more
wiley   +1 more source

Productivity and tolerance reveal the shift from competition to facilitation among multiple species under multiple stressors

Ecological Indicators
Interspecific competition and facilitation play essential roles in community structure and have been widely demonstrated between pairwise species.
Shuhan Li, Man Qi, Haiying Lin, Qianzhao Sun, Wei Yang, Tao Sun   +5 more
doaj   +1 more source

Variable grouping patterns in primates: A test of the better competitor hypothesis in male Verreaux's sifaka (Propithecus verreauxi)

The Anatomical Record, EarlyView.
Abstract Intraspecific variation in social organization (IVSO) within primate populations can arise due to male mating competition. Verreaux's sifaka (Propithecus verreauxi) populations exhibit both single‐male and multi‐male groups, providing an opportunity to examine the relationship between male competitive ability and social organization.
Lemeng Li, Stacey R. Tecot, Rebecca J. Lewis   +2 more
wiley   +1 more source