Products & Applications Resources & Tools Advice and Inspiration About Us Contact Search Group About Us Racing Beneath the surface Articles Add salt and attract the birds Sustainability Robustness Add salt and attract the birds Polly Davis 07 October 2021 Cadiz' marshlands are becoming a safe-haven for migratory birds, a flood barrier for the city and a home for some of Europe's best artisanal salt. Share It’s quite incredible to think that a tiny bird weighing as little as 20 grams can fly over 300 kilometres each day on its journey south for winter sun. Places like the old saltpan marshes of Salina La Esperanza just outside the city of Cádiz have always been essential resting places for these migratory birds. However, as the salt industry collapsed in the 1970s so did the number of birds and La Esperanza, one of the most valuable coastal habitats in the region, was close to disappearing. Bringing the marshes back to life Alejandro Perez-Hurtado, Director of Central Research Services in Salinas from Càdiz University was the first become part of the project to revitalise La Esperanza thirty years ago. Back then there were few birds to be seen. Traditional salt production had all but disappeared as fridges to preserve food and cheap foreign salt flooded the market. “The water was not moving and the marshes were dead,” he says, thinking back to when he first got involved. However, with the support of the University of Cádiz, international funding and the involvement of an army of local volunteers, Salina La Esperanza has undergone a transformation. Today the 39 hectares of the saltpan marsh area is once again is a hotbed of activity – and home to numerous birds. Preserving culture – with salt But before we get to birds, let’s look at salt. Salt production has always been an important industry in Cádiz, with local salt highly prized for cooking and food preservation – and critical for attracting birds. That’s why reviving traditional salt production was a key part of bringing Salina La Esperanza back to life. Essentially, as the salt marshes flood at high tide, the man-made basins fill up with saltwater – as well as molluscs, crustaceans and algae for the birds to feed on. Then as the heat of the Spanish sun causes the seawater to evaporate, sea salt is left behind ready to be collected. When the project started, there were just a handful of people in the area who were able to remember the traditional methods of salt production. This made it even more important to collect this living history. New ideas generate investment Alongside the traditional salt production, the area is now also home to a number of other research projects including aquaculture and the production of large-scale microalgae. Microalgae are a rich source of carbon compounds and have a wide range of uses such as in biofuels, health supplements and wastewater treatment. In a city where the unemployment rate is close to reaching 25 percent, these projects have the potential to attract highly valuable future industrial development and investment in the region. 07 October 2021 The spirit of Cádiz set in stone And while the researchers look into future business opportunities for Cádiz, the saltpans are now attracting birds once more. Thirty years ago, there were just five nests that were home to Kentish Plovers. Today they are well-established throughout the area, as are nesting osprey, black storks, sandpipers, flamingos and great cormorants. And hot on the heels of these many birds are bird lovers, or twitchers as they are affectionately known. But if a day in a hide behind binoculars is not your idea of a great day out, the beauty of the tidal marshes cannot fail to impress – as increasing numbers of nature-loving tourists are discovering. What’s more, taking a wider perspective, the revitalized saltpans are a critical part of the city’s response to climate change. As Alejandro Perez-Hurtado explains, “The marshes are a boundary between the sea and the city so if we can manage these saltpans and keep them in good condition, we can decrease the effects of climate change. We’ve seen how over the past ten years, the size of the tide has increased. These intertidal areas are key to managing this and maintaining biodiversity.” A community effort Today the project is well established and the salt pans are now starting their journey towards self-maintenance. Salina La Esperanza is a testimony to the hard work, enthusiasm and passion of the local community in Cádiz. Many of the people who use the area for an evening stroll or a kayak trip have also been volunteers, carrying out tasks such as repairing the sluice-gates and controlling water depths. In doing so, they have rekindled a love affair with the local birds and wildlife that many local environmentalists had feared were gone forever. 09 September 2021 A holiday for the beach | How the beaches of Saint Tropez re-energise off-season So if you happen to look up and see a flock of birds flying overhead, perhaps taking a rest on a telephone wire, spare a thought for the hard work and commitment of Alejandro Perez-Hurtado and the citizens of Cádiz. Their dedication has turned the saltpans of Salina La Esperanza once again into the thriving natural haven these migratory birds need on their long journey south. And in the process, they have created an area of incredible natural beauty for residents and visitors to Cádiz alike. Beneath The Surface We go #BeneathTheSurface of Cadiz – SailGP’s latest venue – to discover more about this beautiful city in Spain, it’s people and of course SailGP ⛵ Watch on YouTube Beneath The Surface Discover more Beneath The Surface Innovation is a product of curious minds, good data and ambitious goals. Without it, we couldn’t achieve what is required to create a more sustainable future - Or, indeed, to win races. But the innovations that make it possible to really lower the world’s emissions and make it possible to sail 100kph in a 50ft sailboat rarely get the credit they deserve. They are hidden beneath the surface – inside walls, hulls, materials, computers and minds. We want to put what’s beneath the surface in the spotlight. Did you know that fires today develop more than six times faster than in the 1950s? Learn more What do empty cans have in common with vegetables grown in stone wool? Learn more By Deborah Kelly Spillane Robustness The spirit of Cádiz set in stone As Sail GP makes its final European stop for 2021 in Cádiz, Spain, we’ll take you on a tour to show you that there is much more to the city than sun, sea and sailing. Read more By Deborah Kelly Spillane Circularity A holiday for the beach | How the beaches of Saint Tropez re-energise off-season Every summer, the rich and famous flock to stunning Pampelonne beach to relax, recuperate and be seen in the hip beach bars that Saint Tropez is renowned for. But what if the beach bars disappeared at the season’s end? Could this give the beach itself a much-needed holiday from the holiday makers? Read more By Polly Davis Renovation An apartment for less than the price of an espresso While people in many parts of the world despair at the price of city centre property, in the Italian city of Taranto, apartments are going for the bargain price of just one euro ($1.20). Read more By Polly Davis Circularity Not just home sweet home but a material bank It’s not often you hear architects talking about demolishing a building that they are designing. But that’s what happened during the planning phase of Circle house in Lisbjerg. Because if you want to design according to the principles of circularity, you have to consider what happens to the building beyond its intended lifetime. Read more Polly Davis Content Writer Show related articles The Renovation Wave can cut EU gas imports and reduce consumer bills Italy: Creating a new generation of safe and sustainable buildings requires changes to Italian fire regulations Not quite nearly zero-energy buildings: Why the EU-27 must strengthen and rigorously implement nZEB standards Stark climate change conclusions, optimism about building sector’s potential 1/4 Organization ROCKWOOL Products & Applications Roof Insulation Floor Insulation Ceiling Insulation Internal Wall Insulation External Wall Insulation HVAC Insulation Passive Fire Protection Acoustic Insulation Industrial Insulation Marine & Offshore Insulation OEM Insulation Rockflow - Urban climate adaptation Resources & Tools Investors Downloads Case Studies Renovation Energy Efficiency E-Learning Job Opportunities Sustainability Blog Advice and Inspiration Blog Renovation Case studies Learning Why stone wool COP26 About Us Investors Newsroom Careers Our thinking Sustainability Corporate governance Business ethics History Annual Report 2020 Racing Contact Supplier information Investor Relations Find us Contact ROCKWOOL Core Solutions Career opportunities Unsolicited applications ROCKWOOL Group ROCKWOOL International A/S Hovedgaden 584 DK-2640 Hedehusene Denmark Tel: (+45) 46 56 03 00 Fax: (+45) 46 56 33 11 Contact us Social .cls-1{fill:#d20014} Legal Notice Privacy Statement Our Trademarks Cookie Declaration Declaration Of Performance ROCKWOOL Rockfon Rockpanel Grodan Lapinus Copyright © February 2017, ROCKWOOL International A/S Choose a different country or region to see content relevant to your location. 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