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Duncan Murrell - A Whale of a Time

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Duncan Murrell - A Whale of a Time

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  • whale-shark-Puerto-Princesa22.tif
  • Southeast-Alaska-coast6.jpg
  • whale-shark-Puerto-Princesa35.tif
  • whale-shark-Puerto-Princesa34.tif
  • Palawan-underground-river19.tif
  • whale-shark-Puerto-Princesa27.tif
  • whale-shark-Puerto-Princesa13.tif
  • whale-shark-Puerto-Princesa33.tif
  • As this beaver pond was quite near Petersburg I was able to observe them quite often here.
    Alaska-forest-beaver-pondAlaska-vege...jpg
  • Myanmar-Burma-people-events63.jpg
  • Palawan-underground-river13.tif
  • Kayaking- Gulf-of-California69.jpg
  • Myanmar-Burma-people-events64.jpg
  • whale-shark-Puerto-Princesa25.jpg
  • Western hemlock (Tsuga heterophylla) growing beside beaver pond, on the mainland just north of Petersburg, Southeast Alaska, USA.
    Alaska-vegetation31.jpg
  • Alaska-vegetation32.jpg
  • whale-shark-Puerto-Princesa5.tif
  • whale-shark-Puerto-Princesa10.tif
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles35.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles36.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles39.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles37.jpg
  • Madagascar is home to about half the world’s chameleons, including both subfamilies, typical chameleons and dwarf chameleons (Brookesiinae). Chameleons are small to mid-size reptiles that are famous for their ability to dramatically change colours. Contrary to popular belief, they do not change colours to match their surroundings. Instead colour is usually used to convey emotions, defend territories, and communicate with mates. They have two layers of specialized cells that lie just beneath the lizard’s transparent outer skin. The cells in the upper layer, called chromatophores, contain yellow and red pigments. Below them is another layer of cells called guanophores, containing the colourless crystalline substance guanin, which reflect the blue part of incidental light. If the upper layer of chromatophores is yellow, the reflected light becomes green (blue plus yellow). A layer of dark melanin containing melanophores is situated under the blue and white light-reflecting guanophores. These melanophores influence the lightness of the reflected light. All these different pigment cells can relocate their pigment, thereby influencing the colour of the light that is reflected.<br />
Other notable features are bulging eyes that move independently, enabling them to be able to look ahead and behind at the same time, feet with paired toes fixed in a grasping position, and the existence of horns or crests on the heads of many species. Additionally, arboreal species have prehensile tails used for grasping objects when climbing, and some species have long extensile tongues for catching insects or small vertebrates at a distance often greater than their length.<br />
They are diurnal, solitary, and often aggressive towards members of their own species (marked by rapid colour change and aggressive posturing). They are opportunistic hunters that wait for their prey, and move in a curiously, tentative swaying manner. Their bodies are very narrow enabling them easier passage through foliage.
    Kayaking-Madagascar-reptiles38.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation17.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation12.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation18.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation15.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation16.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation19.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation14.jpg
  • Blue icebergs develop from older, deep glaciers which have undergone tremendous pressure experienced for hundreds of years. The process releases and eliminates air that was originally caught in the ice by falling snow. Therefore, icebergs that have been formed from older glaciers have little internal air or reflective surfaces. When long wavelength light (i.e. red) from the sun hits the iceberg, it is absorbed, rather than reflected. The light transmitted or refracted through the ice returns as blue or blue-green. Older glaciers also reflect incident light preferentially at the short wavelength end of the spectrum (i.e. blue) due to Rayleigh scattering, much in the same way that makes the sky blue.
    Southeast-Alaska-glaciation13.jpg
  • The most controversial logging in the Tongass has involved the roadless areas. Southeast Alaska is an extensive landscape, with communities scattered across the archipelago on different islands, isolated from each other and the mainland road system. The road system that exists in the region is in place because of the resource extraction history in the region, primarily established by the Forest Service to enable timber harvest. Once in place, these roads serve to connect local communities and visitors to recreation, hunting, fishing, and subsistence opportunities long into the future. However, installing roads in the vast wilderness areas of the Tongass is also a point of controversy for many in the American public, as reflected in the roadless area conservation movement, which has opposed further road construction on the grounds that it would promote habitat fragmentation, diminish wildlife populations and damage salmon spawning streams; they argue that existing roads are sufficient. <br />
Native Corporation Lands were designated by the Alaska Native Claims Settlement Act of 1971 (ANCSA). This Act conveyed approximately 44,000,000 acres (180,000 km2) of Federal land in Alaska to private native corporations which were created under the ANCSA. 632,000 acres (2,560 km2) of those lands were hand-picked old growth areas of the Tongass and are still surrounded by public National Forest land. These lands are now private and under the management of Sealaska, one of the native regional corporations created under the ANCSA. <br />
Transference of public National Forest land to a privately owned corporation removes it from protection by Federal law and allows the owners to use the land in whatever way they see fit without regard to the effects of the use on surrounding lands and ecosystems. This fact has caused much controversy involving the business interests of Native Regional Corporations and the personal interests of local Native and non-Native residents of Southeastern Alaska.
    Alaska-Tongass-National-Forest2.jpg