Fishing the Gulf of Maine: Tradition at a Crossroads
May 20, 2013 11:41 AM - Michael Sanders, The Ecologist
Lobster fishing remains big business off the coast of Maine but even with new regulations and new gadgets can it ever be sustainable? Michael Sanders investigates the real costs of the crustacean on your plate... When most of us go down to the coast, whether to walk or swim or fish or sail, we take for granted what we see before us. We see the lobster boats and the colorful buoys marking the strings of traps, the bobbing green and red cans marking safe passage, the gulls and other seabirds. In the larger working harbors like Portland and Stonington and Port Clyde, there might be draggers tied up, unloading fish they've caught far out in the Gulf of Maine and on Georges Bank. What we don't realize is that this seemingly unchanging marine world is in fact always changing in ways both large and small. What we think of as "the coast of Maine" - those 3,000 vaunted miles of rocky shoreline punctuated by seaside villages and docks and lobster pounds and fishing fleets - was largely built on the backs of the fishermen and lobstermen who are there, however picturesque or authentic to the eye, for a single purpose: to harvest the sea in order to feed us.
Want to benefit wildlife? Let land go untended.
May 20, 2013 06:02 AM - Roger Greenway, ENN
Which environment would wildlife prefer, actively farmed and managed land, or untended natural land that to us might appear unkempt? Turns out that parts of the farm landscape that look overgrown and 'scruffy' are more important in supporting wildlife than they first appear, according to new research published today in Ecology Letters. The findings stem from an intensive study of an organic farm in Somerset by a team of scientists focussing on the complex ways in which animals and plants interact. First, the team of researchers from the University of Hull, the University of Bristol and the Centre for Ecology & Hydrology, created one of the world's largest terrestrial food-webs — a what-eats-what guide to the food-chain, and then developed a method of predicting what would happen to the whole food-web when habitats were lost.
Drought and Desertification - Global Response
May 19, 2013 09:11 AM - ANDREW BURGER, Global Warming is Real
Land degradation — more specifically drought and desertification — have become increasingly pressing problems for a growing number of countries around the world, threatening efforts to alleviate poverty, improve basic health and sanitation and address socioeconomic inequality, as well as spur agricultural and sustainable economic development. The only multilateral, international agreement linking development and environment to sustainable land management (SLM), high-level representatives from 195 nations will be gathering in Windhoek, Namibia from September 16-27 for the 11th bi-annual Conference of Parties (COP) to review implementation of the United Nations Convention to Combat Desertification (UNCCD). Meeting for the first time in southern Africa, UNCCD delegates will review implementation of the convention to date and plan for the ensuing two years of programs and actions.
Effects of a Warming Planet on Tropical Lizards May Not be Significant
May 18, 2013 07:50 AM - Dartmouth University via ScienceDaily
A new Dartmouth College study finds human-caused climate change may have little impact on many species of tropical lizards, contradicting a host of recent studies that predict their widespread extinction in a rapidly warming planet. Most predictions that tropical cold-blooded animals, especially forest lizards, will be hard hit by climate change are based on global-scale measurements of environmental temperatures, which miss much of the fine-scale variation in temperature that individual animals experience on the ground, said the article's lead author, Michael Logan, a Ph.D. student in ecology and evolutionary biology.
Ice Age Climate Changed Quickly
May 17, 2013 06:24 AM - Alex Peel, Planet Earth Online
Short, sharp fluctuations in the Earth's climate throughout the last ice age may have stopped trees from getting a foothold in Europe and northern Asia, scientists say. According to a new study, warm spells were so brief that trees were unable to establish themselves before the temperature shot back down again. 'The warm events were so short-lived that ecosystems weren't able to respond in full,' says Professor Brian Huntley, of Durham University, who led the study.
Study Shows Scientists Agree on Anthropogenic Climate Change
May 16, 2013 06:02 AM - ScienceDaily
A comprehensive analysis of peer-reviewed articles on the topic of global warming and climate change has revealed an overwhelming consensus among scientists that recent warming is human-caused. The study is the most comprehensive yet and identified 4000 summaries, otherwise known as abstracts, from papers published in the past 21 years that stated a position on the cause of recent global warming -- 97 per cent of these endorsed the consensus that we are seeing human-made, or anthropogenic, global warming (AGW) Led by John Cook at the University of Queensland, the study has been published 16 May, in IOP Publishing's journal Environmental Research Letters.
What Do You Think About Geo-engineering?
May 15, 2013 07:16 AM - Harriet Jarlett, Planet Earth Online
Few members of the UK public are comfortable with the idea of injecting aerosols high into the atmosphere to help slow down climate change, a study has found. People voiced concerns that this type of approach fails to address the basic problem of increasing greenhouse gas emissions. They are also nervous about any unintended consequences of such an action. But most significantly, they say that injecting aerosols into the Earth's atmosphere raises problems of international governance and control: who would ultimately be responsible?
Nature is Good for your Health!
May 14, 2013 06:31 AM - Richard J Dolesh, The Ecologist
A walk in the park can calm and restore you. This is something we take for granted in parks and recreation, because we have known it to be true ever since we started spending time in nature. But new research reported in the British Journal of Sports Medicine now provides scientific proof that walking in nature and spending time under leafy shade trees causes electrochemical changes in the brain that can lead people to enter a highly beneficial state of "effortless attention." The UK researchers state with some justifiable academic stuffiness that "..happiness, or the presence of positive emotional mindsets, broadens an individual's thought-action repertoire with positive benefits to physical and intellectual activities, and to social and psychological resources."
Web tool tracks insecticide-resistant malaria mosquitoes
May 13, 2013 05:06 PM - Calvin Otieno, SciDevNet
An online mapping system to track insecticide resistance in malaria-causing mosquitoes around the world has been launched. The free interactive website identifies places in more than 50 malaria-endemic countries where mosquitoes have become resistant to the insecticides used in bed nets and indoor sprays. IR Mapper was launched last month (25 April) by Vestergaard Frandsen, a Swiss firm that makes disease-control products, and the KEMRI/CDC research and public health collaboration based in Kenya.
CO2 Levels Top 400 ppm at Hawaii Monitoring Station
May 11, 2013 07:38 AM - Roger Greenway, ENN
CO2 levels have been increasing relatively steadily for more than 50 years. On May 9, the daily mean concentration of carbon dioxide in the atmosphere of Mauna Loa, Hawaii, surpassed 400 parts per million (ppm) for the first time since measurements began in 1958. Independent measurements made by both NOAA and the Scripps Institution of Oceanography have been approaching this level during the past week. It marks an important milestone because Mauna Loa, as the oldest continuous carbon dioxide (CO2) measurement station in the world, is the primary global benchmark site for monitoring the increase of this potent heat-trapping gas. Carbon dioxide pumped into the atmosphere by fossil fuel burning and other human activities is the most significant greenhouse gas (GHG) contributing to climate change. Its concentration has increased every year since scientists started making measurements on the slopes of the Mauna Loa volcano. The rate of increase has accelerated since the measurements started, from about 0.7 ppm per year in the late 1950s to 2.1 ppm per year during the last 10 years.