Abstract Fifty years ago David Lack put forward a key hypothesis in life-history theory: that
avian clutch is ultimately determined by the number of young that parents can provide with …

The global nitrogen cycle has been greatly perturbed by human activities resulting in
elevated nitrogen deposition in many parts of the world. The threat nitrogen deposition …

For the past 3.8 billion years, the geochemistry of the Earth's surface-its atmosphere, waters
and exposed crust-has been determined by the presence of biota. Photosynthetic organisms …

It has been 10 years since publication of the first edition ofSoils of the Past. In that time the
subject of paleopedology hasgrown rapidly, and established itself within the mainstream …

The overexploitation of the world's biomes for natural products calls for the prioritization of
biologically important ecosystems for conservation. Here we show that limestone karsts are …

The Flexible Phenotype attempts a true synthesis of physiology, behaviour, and ecology by
develo** an empirical argument that describes the intimate connections between …

Air pollution has a ubiquitous impact on ecosystem functioning through myriad processes,
including the acidification and eutrophication of soil and water, deposition of heavy metals …

The deposition of anthropogenically fixed nitrogen (N) from the atmosphere onto land and
plant surfaces has strong influences on terrestrial ecosystem processes. Although recent …

The interrelationship between wild animal, domestic animals and human health is
appreciated now more than ever before. This is because of the recognition of the …

The eggs of birds contain all the nutrients necessary for the develo** embryo. The female
has to obtain these nutrients, and while in some species these may be gathered and stored …