{"page":"\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/resources-572d6a42.css\" /\u003e\n\u003clink rel=\"stylesheet\" href=\"https://lessonplanet.com/assets/packs/css/lp_boclips_stylesheets-f4d0de30.css\" media=\"all\" /\u003e\n\u003cdiv data-title='Aggressive zebra mussels damaging Spanish waterways' data-url='/boclips/videos/5c54c087d8eafeecae14b689' data-video-url='/boclips/videos/5c54c087d8eafeecae14b689' id='bo_player_modal'\u003e\n\u003cdiv class='boclips-resource-page modal-dialog panel-container'\u003e\n\u003cdiv class='react-notifications-root'\u003e\u003c/div\u003e\n\u003cdiv class='rp-header'\u003e\n\u003cdiv class='rp-type'\u003e\n\u003ci aria-hidden='true' class='fai fa-regular fa-circle-play'\u003e\u003c/i\u003e\nVideo\n\u003c/div\u003e\n\u003ch1 class='rp-title' id='video-title'\u003e\nAggressive zebra mussels damaging Spanish waterways\n\u003c/h1\u003e\n\u003cdiv class='rp-actions'\u003e\n\u003cdiv class='mr-1'\u003e\n\u003ca class=\"btn btn-success\" data-posthog-event=\"Signup: LP Signup Activity\" data-posthog-location=\"body_link_boclips\" data-remote=\"true\" href=\"/subscription/new\"\u003e\u003cspan\u003e\u003cspan\u003eGet Free Access\u003c/span\u003e\u003cspan class=\"\"\u003e for 10 Days\u003c/span\u003e\u003cspan\u003e!\u003c/span\u003e\u003c/span\u003e\u003c/a\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-body'\u003e\n\u003cdiv class='rp-info'\u003e\n\u003cdiv aria-label='Hide resource details' class='rp-hide-info' role='button' tabindex='0'\u003e\u0026times;\u003c/div\u003e\n\u003ci aria-label='Expand resource details' class='rp-expand-info fai fa-solid fa-up-right-and-down-left-from-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003ci aria-label='Compress resource details' class='rp-compress-info fai fa-solid fa-down-left-and-up-right-to-center' role='button' tabindex='0'\u003e\u003c/i\u003e\n\u003cdiv class='rp-rating'\u003e\n\u003cspan class='resource-pool'\u003e\n\u003cspan class='pool-label'\u003ePublisher:\u003c/span\u003e\n\u003cspan class='pool-name'\u003e\n\u003cspan class='text'\u003e\u003ca data-publisher-id=\"30356011\" href=\"/search?publisher_ids%5B%5D=30356011\"\u003eCurated Video\u003c/a\u003e\u003c/span\u003e\n\u003c/span\u003e\n\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='rp-description'\u003e\n\u003cspan class='short-description'\u003eFlix - November 20061. Pan of River Ebro near Flix 2. Ebro River 3. Small fishing boat4. Pan from river to warning sign5. Sign reading (in Spanish): \"Warning Zebra Mussel. Navigation Rules.\"6. Sign reading (in Spanish): \"Protocol for...\u003c/span\u003e\n\u003cspan class='full-description hide'\u003eFlix - November 2006\u003cbr/\u003e1. Pan of River Ebro near Flix \u003cbr/\u003e2. Ebro River \u003cbr/\u003e3. Small fishing boat\u003cbr/\u003e4. Pan from river to warning sign\u003cbr/\u003e5. Sign reading (in Spanish): \"Warning Zebra Mussel. Navigation Rules.\"\u003cbr/\u003e6. Sign reading (in Spanish): \"Protocol for disinfection.\"\u003cbr/\u003e7. Sign in English and German\u003cbr/\u003e8. Close up of sign\u003cbr/\u003e9. Ecologist Pere Jimenez entering reserve building\u003cbr/\u003e10. Close up of reserve sign\u003cbr/\u003e11. Volunteer counting mussels \u003cbr/\u003e12. Close up measurement of mussels\u003cbr/\u003e13. Various of baby mussels \u003cbr/\u003e14. Close up of zebra mussel.\u003cbr/\u003e15. SOUNDBITE (Spanish) Pere Jimenez, Ecologist :\u003cbr/\u003e\"They turn the water completely transparent. They compete with autonomous species causing their disappearance, they stick to autonomous molluscs suffocating them, they transmit parasites onto fish. When filtering water they make it become transparent facilitating the growth of aquatic vegetation of certain species instead of others. All this means that is completely changing the ecological process. This is an authentic environmental debacle for our rivers.\"\u003cbr/\u003e16. Wide of Ebro River\u003cbr/\u003e17. Close up of plant by river \u003cbr/\u003e18. Fishermen on river\u003cbr/\u003e19. Pan of river to heron \u003cbr/\u003e20. SOUNDBITE (Spanish) Pere Jimenez , Ecologist :\u003cbr/\u003e\"The Iberian peninsular is home to the biggest biological diversity in continental Europe. It was the last region where this invading species had not got to and that has now provoked massive extinction of fishes in other continents and in Europe. Now unfortunately this last area of biodiversity that is the Iberian peninsular has been affected. \"\u003cbr/\u003e21. Wide of hydro-electric plant\u003cbr/\u003e22. Various of hydro-electric plant\u003cbr/\u003eLerida - November 2006\u003cbr/\u003e23. Electricity company Fecsa-Endesa offices, Lerida\u003cbr/\u003e24. Chief Environmental Officer, Antonio Palau, Fecsa-Endesa\u003cbr/\u003e25. Palau looking through microscope\u003cbr/\u003e26. SOUNDBITE (Spanish)Antonio Palau, Chief Environmental Officer at electricity company Fecsa-Endesa :\u003cbr/\u003e\"The majority of surface; plastics, wood, metal are all able to be colonised. Therefore all that is in contact with the water for example grills at the hydro electric plant are perfect for the zebra mussel, they can completely or partially block the flow of water that enters the plant causing a decrease in the hydroelectric capacity.\"\u003cbr/\u003eFlix - November 2006\u003cbr/\u003e27. Fishermen on boat\u003cbr/\u003e28. Fishermen in boat on river\u003cbr/\u003e29. Tilt down of Flix Council buildings\u003cbr/\u003e30. SOUNDBITE (Spanish) Pere Munoz i Hernandez, Flix Mayor :\u003cbr/\u003e\"Now you cannot enter the Ebro River in particular zones where it is necessary to disinfect the boats. But it is very difficult to control the movement of all the boats so that they pass through these controls.\"\u003cbr/\u003e31. Wide of Ebro River\u003cbr/\u003eThe spread of an invasive mollusc along the Iberian Peninsular is threatening to destroy the waterways and local aquatic ecosystems of the region.\u003cbr/\u003eIn the last five years, the Zebra mussel (Dreissena Polymorpha), which is a mollusc from the Black Sea, has colonised its way along Spain's biggest river, the Ebro, and the species is now threatening other rivers in the region.\u003cbr/\u003eEcologists and biologists have raised the alarm - saying the invasion is an environmental disaster .\u003cbr/\u003eSpain's rivers are said to be the most ecologically diverse in Europe. \u003cbr/\u003eBut this rich environmental and historical heritage is under threat.\u003cbr/\u003eThe Iberian Peninsular is being invaded by the Zebra mussel. \u003cbr/\u003eThe mussel is originally from the Black Sea and is a highly aggressive species, which is causing alarm among environmental experts. \u003cbr/\u003eAn adult female Zebra mussel may produce between 30-thousand to one million eggs per year, with spawning taking place in the months from late spring to early summer. \u003cbr/\u003eIn the past five years, Spain has seen the spread of the Zebra mussel shoot up from 500 per meter square to 40-thousand per square metre.\u003cbr/\u003eThe mussels also attack boats and can be carried along rivers attached to the hulls of vessels. \u003cbr/\u003eTo combat this, the Ministry for the Environment have brought in a new protocol for the disinfecting of boats in contaminated areas, such as the River Ebro, to try to stem the spread of the Zebra mussel around the country. \u003cbr/\u003eThe Flix nature reserve, which is a protected zone found in the heart of the Ebro River's basin in Catalonia, is managed by the ecology group Grupo Natura Flix. \u003cbr/\u003eThis group detected the first examples of the Zebra mussel in the area in 2001. \u003cbr/\u003eSince then the mussel has colonised its way along the river.\u003cbr/\u003eEnvironmentalists fear that the mussel will soon colonise the rest of the rivers in Spain and Portugal if it is not stopped.\u003cbr/\u003eEcologist Pere Jimenez, who runs the Flix reserve, believes Spain must react quickly to stop the infestation.\u003cbr/\u003eThe Zebra mussel is not only a threat to the environment but its economic damage is already forcing big businesses to spend millions of euros (dollars)in looking for solutions.  \u003cbr/\u003eThe zebra mussel has even begun to damage a local hydro-electric plant, by attaching itself to the construction and blocking water vents. \u003cbr/\u003eThe electric company, Fecsa-Endesa, has invested millions of euros (dollars) since 2001to try to undo the effects of the Zebra mussel plague on its installations, an investment that may increase in the coming years. \u003cbr/\u003eChief Environmental Officer at Fecsa-Endesa, Antonio Palau, explains how the mussels cause damage.\u003cbr/\u003eAnd experts agree, that the Zebra mussel is almost impossible to eradicate. \u003cbr/\u003eSolutions such as attacking them with chemicals or controlling reservoir water levels are possible, but their environmental side effects, and economic costs, have stopped people using them.\u003cbr/\u003eThe measures imposed by the Environment Ministry, particularly the control of boats accessing the river, are according to the local Mayor, Pere Munoz i Hernandez, almost impossible to enforce. \u003cbr/\u003eThe US and other countries in Europe have been trying to fight the Zebra mussel for years with a loss of (m) millions of euros and dollars and damage to eco-systems. \u003cbr/\u003eSome fear, without a coordinated effort to stop its spread, the rivers of Spain may change forever.\u003cbr/\u003eKeyword-environment\u003cbr/\u003e\u003c/span\u003e\n\u003c/div\u003e\n\u003cdiv class='action-container flex justify-between'\u003e\n\u003cbutton aria-expanded='false' aria-label='Read more description' class='rp-full-description' type='button'\u003e\n\u003ci 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