Monthly Archives: October 2010

Hidtma XX years in engineering and consultancy

The HIDTMA company celebrates XX years in Spanish and international engineering and consultancy and continues working and incorporating new technologies with which to face the future.
HIDTMA (Hydraulics and Environment) is a private engineering and technical consultancy company specialising in environmental studies and port and coastal engineering, created in 1990, some XX years ago now, by a group of professionals from the field of applied research and of renowned prestige.
Since its creation, it has worked for both Public Administrations and private companies alike, developing projects and studies of relevance within the national and international ambit.
HIDTMA undertakes it work with complete independence, basing itself on its human resources and the latest available technologies, using the most advanced techniques supported by numerical models of highest quality, together with the most sophisticated data acquisition equipment and laboratory analyses.
Throughout these last twenty years the diversification of HIDTMA into different companies of linked and complementary activities has facilitated the development of in-depth and detailed work on our part.
Therefore, and since the year 2001, the HIDTMA ECOMAR company located in Valencia, has been undertaking marine environmental and analytical laboratory work, having become a frontline company in environmental coastal engineering.
Around the same time SIPORT21 was founded, a company in which HIDTMA has holdings, specialising with a high technical level in the study and analysis of vessel manoeuvrability,with numerical models and real time vessel manoeuvring simulator.

On the other hand, HIDTMA forms part of the ABARLOA2 group of companies dedicated to port, coastal and environmental projects of an international nature.
After these twenty years in close contact and working with our clients, we would like to express our gratitude to all those of you who have placed your trust in HIDTMA. For our part it has been wonderful and a pleasure to work with all of you.

Hidtma crossing 2010

HIDTMA, aware of the circumstances we are all going through in this profound economic/financial crisis, and to ensure that the prow of our ship may always point the way forwards, is planning an “educational-scientific” crossing for its employees and for those adventurous clients who dare to join in.

The crossing will cover an area of the Mediterranean and will have specific scientific objectives with measurements of oceanographic parameters, water quality, immersions for the study of marine benthos and whale-watching.
On the other hand, we want those participating to enjoy the sea, its wealth and beauty, and for us all to return with renewed hope and energy to continue with our work.

Coastal eco-cartography of the province of Castellón – Completion of work

In the year 2009 the HIDTMA company undertook Eco-cartographic field work in the province of Castellón. During the first semester of 2010 the desk work and final report for this extensive study was completed.

With the completion of this eco-cartographic study,HIDTMA –as a Joint Venture with Iberinsa-, has now completed eco-cartographies of the Mediterranean coastline between the provinces of Castellón and Granada, inclusive.
All the information is structured and organised within a GIS or Geographical Information System (Arc View 9.2), and is the property of the General Directorate of Coastal and Sea Sustainability (MARM)

Cadiz Eco-cartographic tender

The Joint Venture made up of HIDTMA-IBERINSA was deemed to have presented the best bid by the Ministry of the Environment and Rural and Marine Affairs (MARM).

The public tender for the Eco-cartographic Study of the province of Cádiz has a budget of 3.532.443 € and an execution deadline of 20 months.

Studies in the Marin area

The HIDTMA company is undertaking a variety of work for the Port Authority of Pontevedra-Marín, relating to the different extensions of the Marín Port.

The work involves environmental monitoring of the extension work on the Western Commercial Dock, monitoring of the area of discharge of dredged materials into the sea and a study of the environmental impact of the extension project for the New Commercial Docks.
HIDTMA has vast experience in the execution of oceanographic and environmental studies in the Pontevedra Ria, where it has been carrying out its activities since 1993.

Up-dating and fine-tunning the modelization software

HIDTMA continues up-dating and fine-tuning its numerical modelization techniques for their application to the development of their work, and to do so maintains fluid contact with, principally, the Danish Hydraulic Institute (DHI), as well as with other international bodies.

Currently HIDTMA technicians are fine-tuning the MIKE ECOLAB for its application in the coastal waters of the Spanish Mediterranean, attending to its particular physical, chemical and biological characteristics. Similarly, it could also be applied to reservoirs and marshes.
Said model will permit the simulation of water quality processes, eutrophication, heavy metals, oxygenation and, in short, the simulation of water quality processes and frontline biological processes, produced in the marine and continental aquatic environment.

Discovery of a cold water coral reef in the Cantabrian see

The Spanish Oceanographic Institute (IEO) together with the General Secretariat for the Sea (SGM), discover a cold water coral reef in an underwater canyon in the Cantabrian Sea. On the other hand, and together with the University of Barcelona, the IEO is developing a methodology which permits the definition of safety distance netween fish farms and sensitive ecosystems.

The discovery of a cold water coral reef represents an important scientific discovery, as the existence of these deep reefs had been previously unheard of in Spanish waters.

Researchers from the Spanish Oceanographic Institute (IEO), aboard the oceanographic vessel Vizconde de Eza, belonging to the General Secretariat for the Sea (SGM), have discovered a cold water coral reef in a deep area of the Avilés Canyon. This finding, of great scientific importance, took place during the course of an oceanographic campaign for the INDEMARES project.

The principal objective of this project, coordinated by the Biodiversity Foundation, is to contribute to the protection and sustainable use of the biodiversity in Spanish seas through the identification of areas of value for Natura 2000.
It is noteworthy that this event represents an important achievement for science given that, to-date, the existence of this type of deep reefs in Spanish waters had been unheard of and there is great concern on a worldwide scale for the protection of these extraordinary ecosystems with elevated indices of biodiversity.

During the campaign an area of more than 6.400 km2 was cartographed and during the course of the studies important discoveries were made, such as the existence of a complex and unknown system of canyons tributaries to the principal Canyon of Avilés, and which ultimately empty into the abysal plains of the Gulf of Vizcaya in one sole fan-shaped deposit, located at 4.800m depth.
One of these tributary canyons, of 16,5 km length and 6,1 km maximum width, presents singular features, both in terms of its geological characteristics and current dynamics, as well as due to having identified within it and at great depth an outstanding and well structures cold water coral reef.

The development of a methodology which permits the definition of a safety distance between fish famrs and sensitive ecosystems.
The discharge from aquaculture facilities with an annual production of 6.000 tonnes can reach prairies of marine phanerogams located up to two kilometres away.
Scientists from the Spanish Oceanographic Institute (IEO) and the University of Barcelona have developed a methodology for detecting the influence on marine ecosystems of discharge from fish farms in open waters. Thanks to this methodology, based on the analysis of the nitrogen isotope signal in the tissue of marine vegetables, it is possible to select the areas apt for aquaculture under ecological criteria, establishing safety distances between the farm and the ecosystem sensitive to this activity.

The work consists in analysing the proportions of the different nitrogen isotopes in the tissue of marine vegetable organisms (algae and marine angiosperms) and comparing it with the proportions of these same isotopes in the discharge whose impact it is sought to evaluate. In this way it is possible to determine what proportion of nitrogen from the ecosystem comes from the discharge of aquaculture facilities and thereby establish, under ecological criteria, a safety distance which would protect ecosystems vulnerable to potential impact.
Part of this methodology, recently published in the prestigious magazine Marine Environmental Research, and with which researchers from the University of Alicante also collaborated, has been applied to the study of the influence borne by a complex of farms of some 6.000 tonnes of annual production, located in San Pedro del Pinatar (Murcia), upon the prairies of Posidonia oceanic within the surrounding area and it was determined that the discharge from these facilities affects organisms located within two kilometres distance.
The Spanish Oceanographic Institute (IEO) is a public research body (OPI), part of the Ministry of Science and Innovation, dedicated to the research of marine sciences, particularly in relation to scientific knowledge of the oceans, sustainability of fishing resources and the marine environment. The IEO represents Spain in the majority of international scientific and technological forums relating to the sea and its resources. It has nine coastal oceanographic centres, five marine crop experimentation plants, twelve mareographic stations, a reception station for satellite images and a fleet made up of six oceanographic vessels, amongst which of note is the Cornide de Saavedra, of 1.100 tonnes displacement and 68m length.

Agreement between Hidtma Ecomar SL and the Catholic University of Valencia

Within the framework of the relations established between the Catholic University of Valencia and Hidtma Ecomar an agreement has been reached for the cession of Laboratory equipment on the part of HIDTMA to the University.

Said agreement will permit the joint exploitation of the future Water Analysis Laboratory. This will be to their mutual benefit, keeping the analytical techniques fine-tuned, with both entities jointly undertaking research and practical work.

Project for the protection of marine and coastal resources in the Gulf of Gabes – Tunicia

The HIDTMA company, through its international project manager ABARLOA2 participates in the “Project for the Protection of Marine and Coastal Resources in the Gulf of Gabès: Inventory of introduced marine and lake species, and management of ballast waters”.

The study, in which the University of Alicante is taking part, seeks to analyse the effect that ballast waters in the Gulf of Gabes have had on marine species.
To do so, they have been undertaking an inventory of indigenous and introduced species upon which the eventual ecological consequences that the latter may have had upon the former will be analysed.

The work to be carried out includes sampling of experimental fishing, immersions, benthic sampling via dredging, plankton sampling, coastal sampling and water quality.