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Author: R.J.F. Smith Publisher: Springer Science & Business Media ISBN: 3642823483 Category : Science Languages : en Pages : 258
Book Description
Fish migration is important and spectacular. Migratory fish gather energy in one portion of the environment and transport it to other areas, where it often becomes available to humans or to other elements in the ecosystem. Migration brings fish into situations that allow easy harvest as they concentrate along migration routes. Their journeys also make them vulnerable to human intereference at critical points along their route. Salmon, for example, may harvest plankton in the open ocean and transport that food energy to coastal and inland regions, where it is captured by fisheries or deposited in inland streams and utilized by the flora and fauna of the region. These salmon are able to complete journeys of thousands of kilometers from their natal streams to oceanic feeding grounds and back to the same home streams, an accomplishment that strains our credi bili ty . We now understand some of the timing and guiding stimuli used in these migrations, and mechanisms can be logically proposed, on the basis of the established abilities of fishes, to account for the unexplained portions of the migrations. There is no single factor guiding these fish. Instead, they are dependent on the presence in their environment of a great variety of appropriate orienting and timing stimuli. These stimuli are vulnerable to human interference. The more widespread and easily available the information on these requirements, the more readily fish can be protected from such interference.
Author: R.J.F. Smith Publisher: Springer Science & Business Media ISBN: 3642823483 Category : Science Languages : en Pages : 258
Book Description
Fish migration is important and spectacular. Migratory fish gather energy in one portion of the environment and transport it to other areas, where it often becomes available to humans or to other elements in the ecosystem. Migration brings fish into situations that allow easy harvest as they concentrate along migration routes. Their journeys also make them vulnerable to human intereference at critical points along their route. Salmon, for example, may harvest plankton in the open ocean and transport that food energy to coastal and inland regions, where it is captured by fisheries or deposited in inland streams and utilized by the flora and fauna of the region. These salmon are able to complete journeys of thousands of kilometers from their natal streams to oceanic feeding grounds and back to the same home streams, an accomplishment that strains our credi bili ty . We now understand some of the timing and guiding stimuli used in these migrations, and mechanisms can be logically proposed, on the basis of the established abilities of fishes, to account for the unexplained portions of the migrations. There is no single factor guiding these fish. Instead, they are dependent on the presence in their environment of a great variety of appropriate orienting and timing stimuli. These stimuli are vulnerable to human interference. The more widespread and easily available the information on these requirements, the more readily fish can be protected from such interference.
Author: Favel Parrett Publisher: Hachette Australia ISBN: 073363009X Category : Fiction Languages : en Pages : 121
Book Description
Prague, 1938: Eva flies down the street from her sister. Suddenly a man steps out, a man wearing a hat. Eva runs into him, hits the pavement hard. His hat is in the gutter. His anger slaps Eva, but his hate will change everything, as war forces so many lives into small, brown suitcases. Prague, 1980: No one sees Ludek. A young boy can slip right under the heavy blanket that covers this city - the fear cannot touch him. Ludek is free. And he sees everything. The world can do what it likes. The world can go to hell for all he cares because Babi is waiting for him in the warm flat. His whole world. Melbourne, 1980: Malá Liška's grandma holds her hand as they climb the stairs to their third floor flat. Inside, the smell of warm pipe tobacco and homemade cakes. Here, Mána and Bill have made a life for themselves and their granddaughter. A life imbued with the spirit of Prague and the loved ones left behind. Favel Parrett's deep emotional insight and stellar literary talent shine through in this love letter to the strong women who bind families together, despite dislocation and distance. It is a tender and beautifully told story of memory, family and love. Because there is still love. No matter what.
Author: Stephen Rippon Publisher: Oxford University Press on Demand ISBN: 0199533784 Category : History Languages : en Pages : 423
Book Description
This volume explores how the archaeologist or historian can understand variations in landscapes. Making use of a wide range of sources and techniques, including archaeological material, documentary sources, and maps, Rippon illustrates how local and regional variations in the 'historic landscape' can be understood.
Author: Rose Cardarelli Publisher: Emerald Group Publishing ISBN: 1804559121 Category : Social Science Languages : en Pages : 228
Book Description
Subverting eco-anxiety and establishing ways we can empower children around the globe, this book takes a holistic approach to bring together the relevancy and impact of forced migration and climate resilience, underpinned by a social emotional approach to overall wellbeing, adjustment, and adaptability.
Author: R.J.F. Smith
Author: R.J.F. Smith
Author: Dawn Thurston
Author: Favel Parrett
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Author: Stephen Rippon
Author: James Wilson
Author: Rose Cardarelli