Estimating competition coefficients from census data: a test with field manipulations of tidepool fishes

Article Abstract:

A dynamic rather than a static measure of interaction strength may better predict how one species affects another. The dynamic regression models exclude equilibria assumptions and are better predictors of competitive effect. A study of the competition coefficients from static and dynamic regression models and comparisons with experimental manipulations for a guild of tidepool sculpins showed a competitive effect of Oligocottus maculosus on Clinocottus globiceps growth but failed to show any effect of C. globiceps on O. maculosus growth.

Analysis, Competition (Biology), Tide pool ecology, Tide pool ecosystems

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Apatite fission track data from southeast Ireland: implications for post-Variscan burial history

Article Abstract:

A reconnaissance apatite fission track analysis was conducted in southeastern Ireland, the results of which were compared with modelled parameters in fission track age and length distribution. The samples used in the study were believed to have experienced total heating and cooling during and after the Variscan orogeny. The study indicates the presence of at least three discrete thermal events in the southern region of Ireland since the start of the Carboniferous period and significant diastrophic movements after the Variscan orogeny.

Usage, Ireland, Geological research, Geology, Stratigraphic, Stratigraphy, Carboniferous period, Fission track dating

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Sequencing reelfoot extension based on relations from southeast Missouri and interpretations of the interplay between offset preexisting zones of weakness

Article Abstract:

The polyphase deformation, the timing of associated magmatism, graben development and faulting have caused the Catoctin extension in southeast Missouri. A study of stratigraphic and structural associations show that theCatoctin extension in southeast Missouri caused the brittle thinning of the crust, which led to a compartmental tilt block terrane and a number of convergent half grabens.

Missouri, Faults (Geology)

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