Ecoportal Ecology

Russia refuses to move to daylight saving time. Indian gunmen kidnapped six environmentalists WWF in reserve on the north-east India. Felling oak Khimkinskaya begin in late 2011. In the animal world: the dialects of gibbons, tiger population, the spotted seal, an emigrant, poisonous frogs and jellyfish in Australia, the friendship of bats. Scientific discovery: radiation reduced the size of the brain in Chernobyl birds, and the biggest fish on Earth may be more more. Nature and health: corals can become a source of drugs against bone diseases.

This is interesting: incineration plant under the ski resort and the Eighth Wonder of the World in New Zealand. Photo fact of the week: 'Ten most unusual hybrids and varieties of fruits and vegetables. " Review of the week from 07.02.2011 to 02.13.2011. Russia refuses to go on winter Russian President Dmitry Medvedev announced the cancellation of the transition in Russia in the winter and summer. On According to the President, the Russians will not translate the clock back one hour in autumn 2011. On a traditional clock in March, Medvedev did not say so, apparently, March 27, Russia was the last time translate the clock forward. The Council of Federation of Industrial Policy as early as proshloi supported by the draft federal law that abolished translation of the clock on the 'summer' and 'winter' time. In the bill currently transition to the abolition of 'summer' and 'winter' time is before the State Duma, where he was introduced by a group of senators and deputies.

The Requirements

The simulation of bare places of different sizes supplies appropriate conditions, mainly of light, to the requirements of different sucessionais ecological groups (KAGEYAMA & GANDARA, 2000). The sucessional model separates the species in ecological groups, joining in plantation models where initial species of succession give adequate sombreamento to the final species of the succession. In this model the plantation can be in lines or modules. Plantation for seeds: This method is interesting to be used in mountainous areas and of difficult access and where intervention in the ground can very be problematic (POMPIA et al., 1990). The plantation direct of seeds it can be used in the introduction of pioneering species and secondary initials, in areas without forest covering, as well as for the introduction of pioneering species and secondary initials, in areas without forest covering, as well as for the introduction of delayed and climcicas secondary species in the enrichment of secondary forests. The sowing of not pioneering species will only have to occur when already contrary case will have a vegetal covering mortality will be exaggerated high, making impracticable the process. Natural regeneration: The first step for choice of the model of specific restoration is the existence of banks of seeds or plntulas of pioneering species and areas with natural vegetation next, to function with source of seeds for natural dispersion the interest area.

In this manner, it does not have necessity of species introduction, being possible the use of natural regeneration as adjusted form more of restoration of the area. Being able itself to eliminate invading species not to delay or to hinder the succession. The presence of a significant regeneration is common in regions with reasonable remaining vegetal covering, presented surprising diversity (KAGEYAMA & GANDARA, 1994). Models with rare and common species: in natural ecosystems disturbed the species they cannot be rare, intermediate or common, depending if its density it can be low: less of one individual for hectare.