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invasive species - Dhaka Mirror https://dhakamirror.com/tag/invasive-species/ Latest news update from Bangladesh & World wide Sun, 12 Jun 2011 10:08:43 +0000 en-US hourly 1 https://wordpress.org/?v=6.3.4 https://dhakamirror.com/wp-content/uploads/2022/08/cropped-dm-favicon-32x32.png invasive species - Dhaka Mirror https://dhakamirror.com/tag/invasive-species/ 32 32 210058712 Mangrove forest plundered https://dhakamirror.com/news/nation/mangrove-forest-plundered/ Sun, 12 Jun 2011 10:04:18 +0000 http://www.dhakamirror.com/?p=30184 2.5km road project in a Bhola char gets AL lawmaker’s blessings; flouts HC order, environmental law Within hours after a court judgement that clearly directed the authorities to abide by the forest and environment acts, groups of people have chopped down thousands of trees inside a mangrove forest and a designated wildlife sanctuary to build ... Read more

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2.5km road project in a Bhola char gets AL lawmaker’s blessings; flouts HC order, environmental law
Within hours after a court judgement that clearly directed the authorities to abide by the forest and environment acts, groups of people have chopped down thousands of trees inside a mangrove forest and a designated wildlife sanctuary to build a road in the remote island of Char Kukrimukri.
The lawmaker of Bhola 4 (Charfashion) Abdullah Al Islam alias Jacob and his local supporters backed chopping down of the mangrove forest for building the 2.5-kilometres long road without any environmental clearance or permission from the forest department as required by the law of the land.
The destruction of the forest would also greatly contribute to habitat loss for thousands of wildlife species, which depend on the forest. According to Ronald Halder, a wildlife expert and author of the “A Photographic Guide to Birds of Bangladesh”, said that Char Kukrimukri is home to a wide range of winter and local birds.
“The road would instantly cause habitat loss for the wildlife in the area,” Halder said. In addition, hundreds of deer, otters, fowls live in the mangrove forest of Char Kukrimukri.
The forest department has vehemently objected to the project and suggested at least two alternatives for building the road, bypassing the forest area. The local Union Parishad planned to link two villages Babugonj and Patila, through the proposed road.
The hurried felling of the trees has also defied the law that says the sale of the trees must be completed after floating a tender in the media.
The 20,000-acre (about the size of 18,200 football fields) man-made mangrove forest is one of the prides of the forest department. Forest officials said that if the road is built, illegal logging and poaching would increase overnight. The wildlife would face severe threat and most importantly, the bio diversity of the area would be at stake.
The road would also jeopardise Bangladesh’s commitment to the international community to fight global warming. The country’s forest cover has alarmingly shrunk to less than 10 percent of land mass with only 0.02 hectares of per capita forest land, one of the lowest in the world.
In 2010, the High Court issued an injunction on the Char Kukrimukri road project after the Bangladesh Environmental Lawyers Association (BELA) filed a writ petition. On Wednesday afternoon (June 8), just after the judgement was verbally passed by the High Court bench, some local people in Char Kukrimukri announced over the loudspeakers in the name of the local lawmaker that the road project would go ahead.
Syeda Rizwana Hasan, chief executive of BELA, said that the cutting of trees is a direct defiance to the High Court judgement.
“The judgement required compliance with the provisions of Environment conservation Act 1995 and the Forest Act 1912 while constructing the road,” Rizwana said, “Such hurried implementation is clearly malafide and against public interest,” she added.
At around noon on Frday, our correspondent found labourers working to construct the earthen road. Nearby, several hundred people with axes in hand were indiscriminately cutting down the tress.
Divisional Forest Officer in Bhola Sayed Ali told The Daily Star that the road would destroy the mangrove forest and make the area most vulnerable to natural disasters.
“We have officially sought help from the police and the magistracy but nothing has been done to stop the felling of the trees,” Sayed said.
“Following Wednesday’s announcement over loudspeaker in the area, we tried to file a General Diary (GD) with the Char Fashion police station but the police were dilly dallying with recording the GD,” Sayed said. “Till today, they (police) have not given us the GD number.” he added.
Hashem Mohajon, an aspiring chairman of the area, widely known as the local lawmaker’s own man and also leading an influential group in the area said that enthusiastic local people started felling the trees and construction of the road.
“The process of floating the tender is now underway. I am not involved with the matter though,” he said. As soon as he finished talking to this correspondent, Hasem Mohajon with his men, started cutting down the trees.
Nur-e-Alam, Upazila Nirbahi Officer of Char Fashion said that after he was informed a team visited the spot on June 9 and forbid the locals from cutting the trees without permission.
“But I could not do anything else, but the forest department can always prosecute those people who are involved in plundering its forest,” He added.
Despite repeated attempts throughout yesterday Abdullah Al Islam alias Jacob, lawmaker for Bhola-4 (Charfashion) could not be reached for his comment.

-With The Daily Star input

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Forest: The one and only address of inhabitable world https://dhakamirror.com/sections/environment/forest-the-one-and-only-address-of-inhabitable-world/ Fri, 10 Jun 2011 10:32:27 +0000 http://www.dhakamirror.com/?p=30137 Dr. Md. Mizanur Rahman for The Daily Star Forest ecosystem provides benefits that support the livelihoods of countless human beings. Forests provide a number of components to the broad range of ecological services such as, regulation of rainfall and hydrological system; maintenance of soil quality, control of soil erosion, modulating climate; and being the habitat ... Read more

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Dr. Md. Mizanur Rahman for The Daily Star
Forest ecosystem provides benefits that support the livelihoods of countless human beings. Forests provide a number of components to the broad range of ecological services such as, regulation of rainfall and hydrological system; maintenance of soil quality, control of soil erosion, modulating climate; and being the habitat of biodiversity. Forests form the basis of different industries e.g. timber, wood processing, paper, rubber, paints, resin, gum, honey, food, medicines, building material, fodder, game, tourism, etc. Forests are home to millions of people all around the world and they are dependent on the forests for their survival.
Every nation has strong cultural and spiritual attachments to forests. Aesthetics and beauty are the important components of forest services. These services are connected and sustained through the integrity of the ecosystems. It is quite impossible to compare the importance of the various services provided by forests as there is no universally accepted common metric that can be used in such measurement.
Global warming: Climate change and forests are interlinked. The increased destruction of the rainforest forming a precious cooling band around the Earth’s equator, is recognised as one of the main causes of climate change. Forests trap and store carbon dioxide, playing a major role in mitigating climate change. On the flip side of the coin, forests become the sources of the greenhouse gas, carbon dioxide when destroyed or over-harvested and burned. Forests , if not harmed ensure that they are enabling to continue to produce the benefits; to mitigate the effects of a changing climate; and to compensate for fossil fuel emissions through carbon storage; and to enhance ecosystem health, sustainability, and resilience.
Forests reduce greenhouse gas emissions to combat global warming. 20% of global greenhouse gas emissions result from deforestation and degradation of forest, more than all the world’s cars, trucks, ships and planes combined. Fossil fuels release carbon dioxide into the atmosphere contributing to global warming and climate change. Forest alleviates this change by converting carbon dioxide to carbon during photosynthesis. The world’s forests contain about 125 percent of the carbon found in the atmosphere. This carbon is stored in the form of wood and vegetation through “carbon sequestration”.
Trees possess about 20 percent carbon by weight and biomass of forest acts as a “carbon sink.” The soil organic matter produced by the decomposition of dead plant material also acts as a carbon store. Consequently forests store enormous amount of carbon: in total, the world’s forests and forest soils currently store more than one trillion tons of carbon, twice the amount found floating free in the atmosphere, according to FAO studies.
The atmospheric carbon dioxide concentration in the pre-industrial era was 280 ppm. Right now the level has risen to 375 ppm, a 30% increase. It is predicted that the level will be 450 ppm in 2050 resulting in 1.8-3ºC increase in temperature eventually. Therefore, global warming will produce a sharp upswing followed by a deep plunge into a glacial period several thousands years from now. A myriad of potential impacts such as increased cyclone intensity; melting of polar iceberg and glaciers; increased salinity and changes in oceanic currents sea level rise and inundation of low lying cities like Venice, Cairo, New Orleans, Lagos, Amsterdam, etc.; coral bleaching and mortality of coral reef; colonization of invasive species and species migration; changes in ecosystem; mass extinction; ozone layer depletion; water shortage; and spreading of diseases — is predicted.
Biodiversity loss: The oceanic food chains may be disrupted. The Amazonian rainforests will be converted into Savanna. The unique biodiversity of various mega hotspots is being lost on a scale that is quite unprecedented. Even though tropical rainforests occupy just 6 percent of the surface area of the Earth, about 80-90 percent of the entire species of the world exist here. Due to massive deforestation, about 50 to 100 species of animals are being lost each day. Rapid deforestation in the Himalayas leads to the extinction of hundreds of plants and dozens of birds and animal species. It is predicted that 366 plant species as well as three dozen species of birds, fish and mammals could become extinct in this region. The future of Himalayas looks very bleak.
Riparian habitat complexity: Water temperature regulates the physiology and ecology of different like littoral and lentic biota. It influences the distribution, behaviour and survival of biota. Riparian deforestation causes the increase of water temperature, thermocline deepening, habitat complexity and insulation, and decreases littoral shading. This deforestation also increases the down-slope salinity and nitrate contamination in surface runoff. The riparian deforestation causes habitat destruction of wildlife refuges especially of amphibians and reptiles.
Changes in climatic pattern: Plant absorbs water from soil through roots and releases it into the atmosphere during transpiration. This released water then forms clouds and rains. African Congo basin deforestation has claimed an enormous toll through the ages in environmental damage. Deforestation of Amazonian rainforests may change the climatic pattern of the world. The deforestation of Amazon is rising very sharply. Even Bolivian Amazon’s deforestation rate in Santa Cruiz is alarming. 20% of the planet’s oxygen is produced by rainforests.
Soil properties: Deforestation exposes the forest soil to the sun, making it very dry and eventually, infertile, due to volatile nutrients such as nitrogen being lost. The rainfall washes away the rest of the nutrients, which flow with the rainwater into waterways. The soil stands totally devoid of essential nutrients. Large tracts of land will be rendered permanently impoverished due to soil erosion. Deforestation causes drought and desertification. Deforestation disrupts the regulation of the flow of water. It also increases salinity in the soil. It alters the microclimate of a place thus affecting the habitats of endemic species. Tree roots bind the underlying bedrock. Deforestation increases the risk of landslide.
Invasive species: Both climate change and invasive species are highly correlated. They are the extraordinary ecological challenges to the world today. Global warming has a profound influence on species’ geographical ranges. Climate change alters destination habitat and increases vulnerability to invasion because of resource scarcity and increased competition among native fauna and flora. Changes in precipitation, nitrogen deposition and temperature will have tremendous impact on the geographic ranges of many species. Increased temperature will allow the spread northward of some species currently restricted in their northern ranges. Stressed ecosystems facilitate the successful invasion of non-native plants.
Cyclone: Deforestation exacerbates cyclonic impacts. Forests act as a buffer between the cyclone and the habitat area. The impacts of the cyclone Nargis was devastating due to deforestation of the mangroves of the Irrawaddy Delta, Myanmar. Hurricane Mitch devastated the Central American countries of Nicaragua and Honduras. The destructions were so severe due to deforestation. Amazon basin level drops in Peru due to hurricanes and deforestation. The Caribbean will be vulnerable to increased hurricane activity if deforestation of the Amazon rainforest is not stopped. The massive deforestation of the Sundarbans will expose the entire southern part of Bangladesh to frequent cyclones.
How to combat the climate change impacts?
Carbon balancing
Initiating tree-planting projects specifically designated for carbon-emissions mitigation
o Replacing construction materials such as plastics, aluminum or cement with wood
Initiating carbon finance
Using more wood in long-lasting products to keep trapped carbon out of the atmosphere for longer periods of time
Substituting fossil fuels with biofuels
o Implementing the Climate Convention and the Kyoto Protocol in the forest industry
Calculating the greenhouse gas balance of the forests, on the basis of the amount of deforestation and reforestation and providing the data for the inventory of greenhouse gases
Silvicultural management
Devising the basic requirements for near-natural silviculture
o Monitoring the impact of climate change on forests and devising appropriate strategies
Dealing with biotic damage in forests like infestation of wood-boring beetles and forest fires
Coordinating national and international forest policy
Improving land use pattern and protecting forest lands
Involving indigenous peoples and traditional communities in conservation programme
Introducing aforestation and reforestation with Introducing pioneer and early successional species
Facilitating natural regeneration in degraded forests
Leaving denuded forest lands untouched for 20 years to promote natural succession
Stopping further clear felling and illegal logging
Protecting natural regenerations (seedling, sapling and juvenile trees) from cutting
Taking effective actions against encroachers and land grabbers
Increasing basic research on the impact of forest degradation
Alleviating poverty in the adjacent areas of forests
Emphasizing on community based conservation
Establishing more protected areas
o Searching for alternative fuel sources in the forest and adjacent areas
o Taking care of secondary and successional forests
Riparian forest management
Declaring riparian vegetation as the refuge ecosystem for plant and wildlife
o Prohibiting clearance of wood and shrubs within 25 m on both sides of any waterway
Preserving not only the river front, interior and riparian forest edge but also parts of the adjacent upland forest
Undertaking aforestation on the open sand dunes by the plant species which have ‘prop roots’ to anchor itself in the loose sand
Maintaining at least two canopy layers (bimodal or reverse J-shaped diameter distribution)
Maintaining at least two main canopy tree species suited to the sites
Undertaking passive management to develop tree size canopy structure and decadence
Planting large diameter trees with strong root systems to provide critical structure
Coastal forest management
Designing and establishing sea-level / climate modelling network
Integrating coastal and marine management
Conducting coastal vulnerability and risk assessment
Initiating community based coastal forestation
Introducing afforestation and reforestation by salt tolerant species
Controlling invasive species
Introducing desirable trees to shade out regeneration of invasive species
Digging out and burning the thickets of the invasive species
Using microbial and other biological agents to control invasion

 

Dr. Md. Mizanur Rahman, a biodiversity specialist, is UNO, Mongla, Bagerhat (mizan_peroj @yahoo.com)

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