Published in Oecologia
The physical structure of a habitat generally has a strong influence on the diversity and abundance of associated organisms. I investigated the role of coralline algal turf structure in determining spatial variation of gastropod assemblages at different tidal heights of a rocky shore near Sydney, Australia. The structural characteristics of algal t...
Published in Ichthyological Research
A manipulative experiment using small-scale artificial reefs was conducted to quantify the relationship between habitat physical complexity and recruitment of the coral reef damselfish, Pomacentrus amboinensis, at Urasoko Bay, Ishigaki Island (Ryukyu Islands, Japan), from January to July 2000. Four types of small-scale, structurally different artif...
In Valiant developed an algebraic analogue of the theory of NP-completeness for computations of polynomials over a field. We further develop this theory in the spirit of structural complexity and obtain analogues of well-known results by Baker, Gill, and Solovay, Ladner, and Schöning.\par We show that if Valiant's hypothesis is true, then there is ...
This paper gives a concise but comprehensive brief survey of an approach for predicting the frequency response functions of general complex structural-acoustics systems in the low-and medium-frequency ranges. Modeling is based on the use of fuzzy structure theory, introduced by the author in 1985, including recent developments concerning identifica...
Published in Behavioral Ecology and Sociobiology
Fluctuating asymmetry is a measure of developmental instability and results from both genomic and environmental influences. Levels of asymmetry are (in part) influenced by mechanical constraints, as asymmetry is believed to reduce efficiency. Here we have investigated the influence of habitat structure (“open” and “cluttered” environments) on prima...
Published in Oecologia
Bluegill (Lepomis macrochira) growth varies inconsistently with plant density. In laboratory and field experiments, we explored mechanisms underlying bluegill growth as a function of plant and invertebrate density. In the laboratory, bluegills captured more chironomids (Chironomus riparius) than damselflies (Enallagma spp. and Ischnura spp.), but e...
