Limnologia.org

• Navios-tanque traficam água de rios da Amazônia 1266863400|%e %b %Y, %H:%M %Z|agohover

Fonte: http://www.envolverde.com.brPor Chico Araújo, da Agência AmazôniaBRASÍLIA – É assustador o tráfico de água doce no Brasil. A denúncia está na revista jurídica Consulex 310, de dezembro do ano passado, num texto sobre a Organização Mundial do Comércio (OMC) e o mercado internacional de água. A revista denuncia: “Navios-tanque estão retirando sorrateiramente água do Rio Amazonas”. Empresas internacionais até já criarem novas tecnologias para a captação da água. Um

• Os três mitos sobre a Água 1265711220|%e %b %Y, %H:%M %Z|agohover

Em um comentário recentemente publicado por Jerald Schnoor na revista Environmental Science and Technology, três mitos sobre a água no planeta são expostos:A água é um recurso estáticoA água é um recurso renovávelNós poderemos sempre desalinizar a água do mar para obter mais águaLeia o artigo completo AQUI.

• Paper Sensor for Environmental Toxin Detection Competitive with ELISA 1263120660|%e %b %Y, %H:%M %Z|agohover

Nano Lett., 2009, 9 (12), pp 4147–4152 DOI: 10.1021/nl902368rAbstract:Safety of water was for a long time and still is one of the most pressing needs for many countries and different communities. Despite the fact that there are potentially many methods to evaluate water safety, finding a simple, rapid, versatile, and inexpensive method for detection of toxins in everyday items is still a great challenge. In this study, we extend the concept of composites, impregnated porous fibrous materials,

• Small increase in CO2 can have a major impact on global climate 1261471800|%e %b %Y, %H:%M %Z|agohover

Most climate models consider only short-term processes such as cloud and sea-ice formation when assessing Earth's sensitivity to greenhouse-gas forcing. Mounting evidence indicates that the response could be stronger if boundary conditions change drastically.In the Early Pliocene, three to five million years ago, global temperatures were about 3–4° C warmer than today in the low latitudes, and up to 10° C warmer nearer the poles1, 2. Climate simulations and reconstructions of this relatively

• The Facts About Bottled Water 1260559260|%e %b %Y, %H:%M %Z|agohover

Source: http://www.onlineeducation.net/bottled_water/

• Paying for open access? Institutional funding streams and OA publication charges 1260206340|%e %b %Y, %H:%M %Z|agohover

An increasing number of research funders are introducing open access (OA) policies. At the same time, publishers are introducing OA publication options. Research institutions need to consider how to respond to these developments, including the possible introduction of institutionally co-ordinated funds for payment of OA publication charges. This paper describes the international background to the issue of institutional OA funds and summarizes the current UK situation, presenting recently gathere

• Biocombustíveis podem liberar mais gases de efeito estufa do que combustíveis fósseis 1256394360|%e %b %Y, %H:%M %Z|agohover

Dois artigos recentemente publicados na revista Science jogaram um balde de água fria sobre a promessa dos biocombustíveis de segunda geração derivados da celulose (partes lenhosas das plantas).Um dos estudos foi feito por Jerry Melillo do Laboratório de Biologia Marinha de Woods Hole, que já desenvolveu pesquisas no Brasil. Este estudo sugere que as mudanças na forma como usamos a terra em conseqüência de cultivo para os biocombustíveis não são levadas em conta -- se fossem, seria m

• Daphnia Genomics Consortium (DGC) Meeting 2010 1255950780|%e %b %Y, %H:%M %Z|agohover

First announcement:When: 26th trough 30th of March, 2010Where: Leuven, Belgiumhttp://bio.kuleuven.be/DGCmeeting2010.htmlThe Daphnia Genomics Consortium (DGC) is an international network of scientists with a common goal to foster the freshwater crustacean Daphnia as a premier model system for genomics in ecology, evolution and the environmental sciences.This meeting aims to bring together the members of the consortium at large, to facilitate the exchange of information on recent developments and

• Crustacean Collections from the Amazon Region 1255821180|%e %b %Y, %H:%M %Z|agohover

The Crustacean Collections from the Amazon Region (CCRUSTAM) website (http://www.biodiversidadeamazonica.net/crustaceos) is part of the Amazonian Biodiversity Portal (http://www.biodiversidadeamazonica.net), which gathers distinct projects and iniciatives dedicated to the dissemination of data and information about the fauna and flora of the Amazon Region. The aim of the CCRUSTAM website is to provide access to the records of the collections from institutions that keep specimens of crustacean

• Growing water needs, mismanagement leading to 'catastrophic decline' in freshwater biodiversity 1255342860|%e %b %Y, %H:%M %Z|agohover

The world will miss its agreed target to stem biodiversity loss by next year, according to experts convening in Cape Town for a landmark conference devoted to biodiversity science.The goal was agreed at the 6th Conference of Parties to the UN Convention on Biological Diversity in April 2003. Some 123 world ministers committed to “achieve, by 2010, a significant reduction of the current rate of biodiversity loss at the local, national and regional levels, as a contribution to poverty alleviatio

• Descoberto como peixes elétricos controlam o "choque" 1254250020|%e %b %Y, %H:%M %Z|agohover

Alguns peixes de água doce presentes na América do sul e central são capazes geram eletricidade. Os campos elétricos são utilizados por estes peixes para navegação, luta e para atrair parceiros. Entretanto, a geração de eletricidade por estes peixes pode atrair predadores, além de requer um alto investimento energético. Por isso estes peixes são capazes de controlar os sinais elétricos que emitem para cima ou para baixo de forma bastante rápida.Uma recente publicação na PLoS Biol

• MIGRATORY FISHES OF SOUTH AMERICA - Biology, Fisheries, and Conservation Status 1254092460|%e %b %Y, %H:%M %Z|agohover

Edited by Joachim Carolsfield, Brian Harvey, Carmen Ross, and Anton BaerWorld Fisheries Trust/World Bank/IDRC 2004ISBN 9-68395-821-2e-ISBN 1-55250-114-0380 ppDownload the book free HERE.Fish species that migrate within the great rivers of South America support important local fisheries but are little known outside their native range. This book represents the first collection of the work of local scientific experts on these remarkable fish. The authors cover the Upper Paraná, Paraguay-Paraná, U

• Lasers do Espaço mostram a redução das camadas de gelo na Groelândia e Antártica 1253805960|%e %b %Y, %H:%M %Z|agohover

A imagem mais detalhada da redução rápida das geleiras ao longo do litoral da Antártida e Groenlândia foi criada usando lasers em satélites. Os resultados são um importante passo na busca de previsões mais precisas para futuro aumento do nível do mar.Em reportagem publicada esta semana na revista Nature, pesquisadores do British Antarctic Survey e da Universidade de Bristol descrevem como a análise de milhões de medições das camadas de gelo na Antártida e Groenlândia através de u

• Climate in Peril - A popular guide to the latest IPCC reports 1253574540|%e %b %Y, %H:%M %Z|agohover

Climate in Peril: A Popular Guide to the Latest IPCC Reports presents the substance of the Climate Change 2007 Synthesis Report of the Intergovernmental Panel on Climate Change in simplified language and structure. The guide, intended for lay readers, is a joint publication of GRID-Arendal and SMI Books, with the generous support of the Norwegian Pollution Control Authority and the Swedish Environmental Protection Agency..

• World's river deltas sinking due to human activity 1253527440|%e %b %Y, %H:%M %Z|agohover

Source: physorg.comA new study led by the University of Colorado at Boulder indicates most of the world's low-lying river deltas are sinking from human activity, making them increasingly vulnerable to flooding from rivers and ocean storms and putting tens of millions of people at risk.While the 2007 Intergovernmental Panel on Climate Change report concluded many river deltas are at risk from sea level rise, the new study indicates other human factors are causing deltas to sink significantly. The

• O impacto do mercado mundial de biocombustíveis na expansão da agricultura brasileira e suas consequências para as mudanças climáticas 1253096160|%e %b %Y, %H:%M %Z|agohover

Estudo mostra que é possível aumentar significativamente a área agrícola no país respeitando-se o Código Florestal e sem desmatar a Amazônia e o Cerrado desde que haja uma política efetiva de incentivo à conversão de pastagens degradadas em áreas agrícolasPorém, se tudo continuar como hoje, deve haver desmatamento no Cerrado de aproximadamente 10 milhões de hectares nos próximos 10 anos para a produção de grãos e cana-de-açúcar.O documento intitulado Impacto do mercado mundia

• Toxic Waters 1252858260|%e %b %Y, %H:%M %Z|agohover

Read the articles of this series HERE.These are very interesting articles showing the problem of water contamination in the United States.Ryan Massey, 7, shows his caps. Dentists near Charleston, W.Va., say pollutants in drinking water have damaged residents’ teeth. Nationwide, polluters have violated the Clean Water Act more than 500,000 times.Excerpt:"The New York Times surveyed violations of the Clean Water Act in the USA. The survey found that in many states, more than 50 percent of regula

• Comparative hydrology - An ecological approach to land and water resources 1252587720|%e %b %Y, %H:%M %Z|agohover

Comparative hydrology - An ecological approach to land and water resourcesEdited by Malin Falkenmark and Tom ChapmanPublisher: Swedish Natural Science Research Council / UNESCOFree textbook available at the SIWI website.Description (from the book's preface):Although the total amount of water on earth is generally assumed to have remained virtually constant, the rapid growth of population, together with the extension of irrigated agriculture and industrial development, are stressing the quantity

• Solving the climate dilemma: The budget approach 1252520580|%e %b %Y, %H:%M %Z|agohover

Solving the climate dilemma: The budget approachPublisher: WBGU, Berlin, 2009Download a free copy of the book here.Description:At their meeting in the Italian city of L’Aquila in July 2009, the heads of state and government of the G8 countries and the Major Economies Forum on Energy and Climate (MEF), whose members include India, Brazil and China, acknowledged the importance that global warming must not exceed the 2°C guard rail if dangerous climate change is to be avoided. WBGU views this as

• Water - A Reflection Of Land Use Options For Counteracting Land And Water Mismanagement 1252518960|%e %b %Y, %H:%M %Z|agohover

Water A Reflection Of Land Use Options For Counteracting Land And Water MismanagementBy M. Falkenmark, L. Andersson, R. Castensson, K. SundbladPublisher: Swedish Natural Science Research CouncilFree textbook available at the SIWI website.Description:It is a fundamental principle that we are living at the mercy of the water cycle: it acts as the bloodstream of the biosphere. As human populations grow, their expectations grow as well. This translates into an increasing demand for livelihood opport