Tuesday, April 28, 2009

Microphone Preamp Digitech Rp350

Bamboo Flowering and oak regeneration



microenvironmental changes in the forest floor are responsible positive effect of the death of bamboos in the regeneration of oak.

In temperate and subtropical forests around the world, the rare blooming of bamboo species (species called Quila or Colihue) is an event that may have not yet understood consequences for plant regeneration. Giordano and colleagues studied seed germination and growth of understory species after a massive event bamboo flowering ( Quila, Chusquea culeou ) in a temperate forest of Argentina Patagonia (Lanin National Park). Examined the possible effect of changes in microhabitat product mass death of C. culeou , and found that the death of C. culeou generates a window of opportunity for germination and growth of understory plants. Particularly the germination of Nothofagus oblique (Roble, Nothofagaceae) was facilitated by this event flowering. Changes in light quality and amplitude of the fluctuations temperatures in the forest floor are responsible for a positive response in the regeneration of oak. This adds new information on the mechanisms of regeneration in forest where the occurrence of bamboo and its persistence for many years is important.

Source:
Giordano, C., Sanchez, R., & Austin, A. (2009). Gregarious bamboo flowering opens a window of opportunity for regeneration in a temperate forest of Patagonia New Phytologist, 181 (4), 880-889 DOI: 10.1111/j.1469-8137.2008.02708.x ResearchBlogging.org

Wednesday, April 15, 2009

Can Implantation Bleeding Be Sparse?

New Paper: Biodiversity in Chile, Heritage and Status of Challenges



In November 2008, we announced the commencement of the second edition of the book "Biodiversity of Chile, heritage and challenges" of the National Environmental Commission, CONAMA with the collaboration of many experts in biodiversity in the country. This book is available online and has detailed information on various topics, all related to the biodiversity of Chile such as: Physical Environment, Ecosystem Diversity, Invertebrates, Mammals, Birds and other vertebrates, as well as Flora, Fungi, Lichens Bacteria and Genetic Resources. It also includes chapters on the Conservation of Biodiversity, human impacts on Biodiversity Strategy National Biodiversity and International Agreements, Research and Education. This book is undoubtedly a great contribution to education and the assessment of the biological heritage of the country.



Available here

Thursday, April 9, 2009

Is There A Program Like Jibjab But Free

the world's forests


In South America, despite the low population density, it is unlikely that the rate of deforestation decrease


A new report on the future of the world's forests was published by FAO. The study is based on recent studies and perspectives newspapers forestry sector to examine the effects that could result in the woods outside factors such as demographic, economic, institutional and technological. Forestry Outlook for Latin America show that will be influenced by the pace of economic diversification and changes in the dependence on land. In South America, despite the low population density, it is unlikely that the slow pace of deforestation in the near future mainly by the change in land use to meet the global demand for food, feed and biofuels. Planted forests promoted by increased private investment and the continued global demand wood. It is unlikely that the pace of planting offset continued deforestation. Surface


The region of Latin America and the Caribbean contains 22% of global forest area. All South American countries recorded a net loss in forest area between 2000 and 2005, except Chile and Uruguay, which showed positive trends due to industrial plantation programs on a large scale. Between 1990 and 2005, the region lost almost 64 million hectares, up 7% of its forest area. More than a third of global deforestation between 2000 and 2005 occurred in this region. In percentage terms, Latin Central has one of the highest rates of annual deforestation in the world:> 1% in the period between 2000 and 2005. Plantations


The region of Latin America and the Caribbean represent only 5% of the world's planted forest area (12.5 mill ha), but the region is emerging as a leader in highly productive plantations. Argentina, Brazil, Chile and Uruguay have 78% of planted forests in the region. Industrial wood production is not significant in Central America or the Caribbean, but is increasing rapidly in South America, mainly due to investment in plantations in the Southern Cone. Planted forests will increase, fueled by private investment and the continued global demand for wood products, in particular by the emerging Asian economies. However, the increasing rate of planting will not be enough to offset the continuing deforestation. Natural Forests


The importance of natural forests in timber production is declining due to increased activity based forest plantations. Selective logging is the main objective of management of most of the concessions in the region, in which there is little attention to forestry and crop postharvest causing unregulated forest degradation. The multiple-use management of natural forests continues to be a complex problem. Turn would discourage private investment in the long term, and most of the farm will remain held by investors in the short term. Environmental Services


The consequences of deforestation in the forest services (biodiversity, water regulation, climate change mitigation and natural tourism) are the subject of much attention both for the region and the world. Brazil, Colombia, Ecuador and Peru are among the ten countries worldwide with more biodiversity, while the eastern slope of the Andes is the most biologically diverse area in the world. Ten Latin American countries with over 1 000 different tree species. The region also leads in the number of tree species considered endangered or vulnerable to extinction.
the region may benefit significantly by increased demand for environmental services provided by forests particularly carbon capture and storage. However, this requires a substantial improvement in policy and institutional frameworks. The prospects for maintaining and improving watershed also depend on changes of land use. No But the future looks bleak in light of the high rate of deforestation.

In short, it is unlikely that the pace of deforestation in South America to decline in the near future. Countries with a large amount of forest that are exploiting the growing worldwide demand for wood products and are following a path of rapid economic development will be difficult to decrease the rate of forest conversion. The provision of global public goods, such as carbon credits will help to some extent. However, has not yet created an effective mechanism to provide incentive to stop deforestation.


Source:
FAO (2009) Status of the world's forests. Available

Rome here

Friday, April 3, 2009

I Want My Wedding To Be In English And In Spanish

Quintral seed dispersal by The Monito del Monte Monito del monte

Monito del monte

The Monito del Monte plays a crucial role in shaping the spatial structure of quintral.

Seed dispersal is a process that shapes the spatial structure of plant populations. For example, affects the distribution of regeneration, the total area occupied by populations of plants and geographical distribution of species. It is still unclear how the spatial aggregation of seeds produced dispersal by animals may affect the spatial scale of plant recruitment. In this sense, parasitic plants such as mistletoe quintral or ( Tristerix spp.) Are ideal for studying the spatial consequences of seed dispersal because seeds of these plants do not germinate or down if they are dispersed by animals. Garcia and colleagues studied the quintral ( Tristerix corymbosus ) and its only seed disperser, the Monito del monte ( Dromiciops gliroides ) in a temperate rainforest near Bariloche. The authors assessed the abundances of quintral and monkey using an approach that aimed to break the structure spatial populations of mistletoe and marsupial at different spatial scales. The study reports that seed dispersal by Monito del Monte plays a crucial role in shaping the spatial structure of quintral. This would occur through the adult fruit tracking by the monkey and the generation of patches quintral rods because of their dispersion. Thus, the Monito del Monte generate a positive interaction between adults and their descendants quintral. Similar effects of the role of dispersal in the spatial distribution of plants may be generalized to other plants in their dispersal are strongly associated with the distribution of the fruits and those plants that the probability of germination of the seeds dispersed is higher than non-dispersed.

Source:
García, D., Rodríguez-Cabal, M., & Amico, G. (2009). Seed dispersal by a marsupial frugivorous shapes the spatial scale of a mistletoe Population Journal of Ecology, 97 (2), 217-229 DOI: 10.1111/j.1365-2745.2008.01470.x ResearchBlogging.org

Quintral (Tristerix corymbosus )

Photo: Wikimedia Commons (Tristerix) and Juan Luis Celis (Monito)