Stem sinuosity is a highly visible stem-form trait in the leaders of fast-growing Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) trees, yet its cause is unknown. We tested the hypotheses that sinuous stems have longer expanses of primary growth than nonsinuous stems (putting the leader at higher risk for curvature, induction of compression wood formation, and possibly overcor...

Meandering channels with exposed point bars and sinuosities near 2.0 can spontaneously develop in a mix of diatomaceous earth and kaolinite clay. The experimental streams that were studied were as small as 4 cm wide. They showed many of the characteristics found in large meandering streams such as migration of channels, formation of point bars, clay plugs, chutes and bar scrolls. Most of the me...

The hyporheic zone in stream ecosystems is a heterogeneous key habitat for species across many taxa. Consequently, it attracts high attention among freshwater scientists, but generally applicable guidelines on sampling strategies are lacking. Thus, the objective of this study was to develop and validate such sampling guidelines. Applying geostatistical analysis, we quantified the spatio-tempora...

[1] Recent gullies on Mars are suspected to be the result of liquid‐water‐bearing flows. A formation from wet flows has been challenged by studies invoking granular (dry) flows. Our study focuses on the sinuous shapes observed for some of the recent Martian gullies. Sinuous gullies are found in locations and slopes (of 10°–15°) similar to straight gullies, and they are therefore related to the ...

This paper presents a linear representation of the built environment called “continuity line”. A continuity line is the aggregation of several axial lines to represent an urban path in its longest extension, respecting a maximum sinuosity previously defined. It is based on two main arguments: first, that the notion of continuity is already embedded in the axial system; and second, that the cont...

The Gulf of Suez area represents one the most famous tectonic structures in Red Sea, with a long history low-, moderate-, and high-intensity earthquakes. This paper provides geomorphic analytics fault-initiated mountain front sinuosity (Smf) stream gradients that cross various segments fault scarps. results from index valley floor width to height ratio (Vf) suggest different levels activities a...

Urbanization in stream catchments can have strong effects on channel hydrogeomorphic features including dimensions, channel-floodplain connectivity, and flood regime. However, the consequences of alterations aquatic-terrestrial subsidy dynamics are largely unexplored. We examined associations among characteristics, emergent aquatic insect assemblages, density trophic riparian spiders family Tet...

We describe a novel representation of a discrete correlated random walk as the transition matrix of a Markov chain with the displacements as the states. Such a representation makes it possible to utilize results from the theory of absorbing Markov chains, to make biologically interesting predictions without having to resort to Monte Carlo simulations. Our motivation for constructing such a repr...