The extension of the areas with natural waterlogging, called "varzeas", is 13.35 million ha.

The permafrost, plus the short summer and seasonal waterlogging, also explains why trees don't grow here.

Waterlogging of the soil stops air getting in.

However, in England the species succumbed to prolonged waterlogging on clay soils overwinter.

Sixteen per cent of the land mass of north Bihar is subject to permanent waterlogging.

Lympne's persistent waterlogging problem forced many flights to divert to Gatwick, especially in winter.

Broken slates were used to raise the level of the nave, maybe helping to avoid the waterlogging that may have affected the earlier two phases.

However, these tests did not constitute the record attempt itself and waterlogging of the salt flats resulted in the attempt being postponed.

This leads to greater waterlogging and erosion, and after heavy rain the road may be impassable even to off-road vehicles.

Phytophthora species are waterborne and therefore improving drainage and reducing waterlogging can help reduce infection.

Such waterlogging preserves perishable artifacts.

GLEYS develop under conditions of intermittent or permanent waterlogging.

The latter combined with poor drainage in an area with an average slope of only 1: 5000 has resulted in raised water-tables and extensive waterlogging.

Frequent, but intermittent waterlogging of the roots requires adaptations to stress, so the proportions of stress tolerators are increased here.

Seasonal flooding and waterlogging of the valley, which is composed of a mosaic of different soil types, creates a variety of distinct ecosystems.

Current studies suggest that increased waterlogging is caused by sea level rise, a possible effect of global warming, which has many natural and anthropologic causes of its own.

Such a climatic change would severely limit pine growth by causing waterlogging, encouraging bog expansion, and inhibiting regeneration by reducing the number of good seed-years.

Heavy waterlogging had been reported from Chiplun, Rajapur, Khed and Mahad in Maharashtra.

Planosols in their natural state support a sparse grass vegetation, often with scattered shrubs and trees that have shallow root systems that can cope with temporary waterlogging.

More usually, however, the drainage system is meant to function as regularly as possible to prevent undue waterlogging at any time and one employs a regular drainage system.

In May and June, the flooding and waterlogging of Lord's caused three games to be abandoned without a ball bowled - the first recorded instance in English cricket.

It is possible to protect the excavators from inclement weather conditions, such as by the use of shelters, but the sites themselves cannot be dried out as the waterlogging actually preserves the sites.

On 4 December 2005 over 300,000 people of Abhaynagar took to the roads and blocked the Jessore-Khulna Highway in the Nowapaara industrial area to protest against a longstanding waterlogging problem.

Since then, a series of excavations has exposed further sections of seating, curved turn and central barrier but further exploration has been limited by the scale, depth and waterlogging of the site.

Waterlogging of archaeological sites inhibits bacterial decay so that organic material such as wood, leather and even 'bog bodies' can survive for thousands of years - sometimes complete villages and landscapes are preserved.