Pepijn, 3 months ago Overfishing.org contained both an introduction to the issue of #overfishing, and #teaching resources. See attached some evergreens (low resolution, DM me for high res). There's the "what, why, how" #infographic, #satellite imagery of #BottomTrawling in the Dutch #Waddensea #environment, and a poster with #trawling all around the world. As I'm #sad to see the website go I've renewed the #domain for one more year and am happy to "donate" it to a good cause. Any interest: DM me. 2/2 #ocean #sea Along the coasts of The Netherlands, Germany and Denmark there lays a shallow coastal sea -with associated wetlands and islands- extremely rich with all types of important sea (it serves as a spawning and nursing grounds for fish) and bird (millions of migratory birds use the mud flats to feed on) life. Large parts of the sea consist of tidal mudflats. The intertidal area is sea during high-tide and dryish land during low-tide. For decades there have been bottom trawling and dredging activities on the Dutch part of the area. As of July 1, 2004 mechanical cockle fisheries have been banned in order to preserve the cockles (and the rich bottom) for the millions of birds. However, some fisheries on mussels (mariculture) and shrimp are still taking place. Here are two low-tide imageres showing the marks / scarves left by various trawling activities. These take years to disappear from visual sight and even longer for the benthic situation to return to the pre-trawling situation. The images are composites from aerial photographs, the location is near the island of Texel. Along the coasts of The Netherlands, Germany and Denmark there lays a shallow coastal sea -with associated wetlands and islands- extremely rich with all types of important sea (it serves as a spawning and nursing grounds for fish) and bird (millions of migratory birds use the mud flats to feed on) life. Large parts of the sea consist of tidal mudflats. The intertidal area is sea during high-tide and dryish land during low-tide. For decades there have been bottom trawling and dredging activities on the Dutch part of the area. As of July 1, 2004 mechanical cockle fisheries have been banned in order to preserve the cockles (and the rich bottom) for the millions of birds. However, some fisheries on mussels (mariculture) and shrimp are still taking place. Here are two low-tide imageres showing the marks / scarves left by various trawling activities. These take years to disappear from visual sight and even longer for the benthic situation to return to the pre-trawling situation. The images are composites from aerial photographs, the location is near the island of Texel. Modern satellite imagery clearly show the mud trails, distortion and other destruction left by the coastal -shallow water- version of these trawling activities. * trawling imagery from Ecuador, USA (Georgia and Louisiana), Netherlands (Vlieland and Westerschelde), Phillipines, China, Malaysia, Indonesia and Mexico. Satellite images are Quickbird, Landsat and aerial photographs.
Overfishing.org contained both an introduction to the issue of #overfishing, and #teaching resources. See attached some evergreens (low resolution, DM me for high res).
There's the "what, why, how" #infographic, #satellite imagery of #BottomTrawling in the Dutch #Waddensea #environment, and a poster with #trawling all around the world.
As I'm #sad to see the website go I've renewed the #domain for one more year and am happy to "donate" it to a good cause. Any interest: DM me.
2/2
#ocean #sea
Along the coasts of The Netherlands, Germany and Denmark there lays a shallow coastal sea -with associated wetlands and islands- extremely rich with all types of important sea (it serves as a spawning and nursing grounds for fish) and bird (millions of migratory birds use the mud flats to feed on) life. Large parts of the sea consist of tidal mudflats. The intertidal area is sea during high-tide and dryish land during low-tide. For decades there have been bottom trawling and dredging activities on the Dutch part of the area. As of July 1, 2004 mechanical cockle fisheries have been banned in order to preserve the cockles (and the rich bottom) for the millions of birds. However, some fisheries on mussels (mariculture) and shrimp are still taking place. Here are two low-tide imageres showing the marks / scarves left by various trawling activities. These take years to disappear from visual sight and even longer for the benthic situation to return to the pre-trawling situation. The images are composites from aerial photographs, the location is near the island of Texel. Along the coasts of The Netherlands, Germany and Denmark there lays a shallow coastal sea -with associated wetlands and islands- extremely rich with all types of important sea (it serves as a spawning and nursing grounds for fish) and bird (millions of migratory birds use the mud flats to feed on) life. Large parts of the sea consist of tidal mudflats. The intertidal area is sea during high-tide and dryish land during low-tide. For decades there have been bottom trawling and dredging activities on the Dutch part of the area. As of July 1, 2004 mechanical cockle fisheries have been banned in order to preserve the cockles (and the rich bottom) for the millions of birds. However, some fisheries on mussels (mariculture) and shrimp are still taking place. Here are two low-tide imageres showing the marks / scarves left by various trawling activities. These take years to disappear from visual sight and even longer for the benthic situation to return to the pre-trawling situation. The images are composites from aerial photographs, the location is near the island of Texel. Modern satellite imagery clearly show the mud trails, distortion and other destruction left by the coastal -shallow water- version of these trawling activities. * trawling imagery from Ecuador, USA (Georgia and Louisiana), Netherlands (Vlieland and Westerschelde), Phillipines, China, Malaysia, Indonesia and Mexico. Satellite images are Quickbird, Landsat and aerial photographs.
alx
moira