Detecting effects of predators on prey: the method matters

In a paper published online today in Methods in Ecology and Evolution, Malcolm Nicoll and Ken Norris look at a controversial issue, that of detecting effects of predators on bird populations. This is controversial because some predators, especially raptors, were formerly rather scarce, but have become more abundant in recent years – in the case of raptors because organochloride chemicals are not used any more. … Continue reading Detecting effects of predators on prey: the method matters

New papers – problems with matrix models & measuring species richness

We have two new papers online this week: In the first, David Watson looks at the problem of measuring diversity in highly diverse vertebrate communities. He shows that methods usually used for arthropod communities can be applied to monitoring bird populations. The analyses he performed answered important questions, such as: what effort is required to completely inventory a site? And, what is the least effort … Continue reading New papers – problems with matrix models & measuring species richness

New papers – regression modelling and one-sided hypothesis testing

Two new papers on statistical methods are now available on “Early View”. The first is a paper by Holger Schielzeth on regression methods. In this paper Holger tries to raise awareness of the importance of standardizing and centring input variables before analysis in order to improve the interpretability of coefficients. There are various advantages to doing this, for example in obtaining the standard errors for … Continue reading New papers – regression modelling and one-sided hypothesis testing

Allometry, statistics, telemetry and physiology – new papers online

Four more papers have gone online this month and we are close to being able to put together the first issue of the journal! In the first new paper to be published Adrian Barnett and colleagues present a comparison of methods for selecting the correct variance structure for longitudinal data. This is likely to be of considerable interest as it is a paper about how … Continue reading Allometry, statistics, telemetry and physiology – new papers online

Four new papers published in January

Four new papers have been published online this month. These cover a range of topics including ecological modelling, measuring diversity, detecting range shifts and physiological ecology. In the first paper, Gideon Gal and William Anderson outline a new method for detecting regime shift in ecosystems.  Regime shifts occur when the state of an ecosystem changes markedly and rapidly, usually with a dramatic shift in species … Continue reading Four new papers published in January