Alas de Marisma






Americas flyway


WLI Americas


Organisation name

HAPIC (Humedal Arroyo Pareja - Isla Cantarelli).

Non-profit environmental NGO, Legal Person Nº 41526.

Financial support

Members of the NGO pay a monthly membership fee of $15

Number of staff


Number of visitors per year



To bring the city's population closer to the local natural environment by observing seabirds and shorebirds from the bird observatory.

To work together with the local population and educational centres in the conservation of local natural environments.

The site is a marshland covering approximately 50 hectares, home to seabirds and shorebirds, and some grassland. The habitat is composed of 3 ecotones: intertidal sector, pampean plain, and part of the espinal. Located in the district of Coronel de Marina Leonardo Rosales, within the Bahìa Blanca Estuary.

The birds we work with the most are: Red Knot (Calidris canutus rufa), Southern Flamingo (Phoenicopterus chilensis) and Skimmers (Rynchops niger). The observatory is open to the public all year round. From the NGO we revalue the value of the crayfish beds and marshes as sites of environmental relevance.

The activities we carry out are developed in the following point, but with regard to these birds, we carry out sightings in search of ringed individuals.


Work areas

Main CEPA activities

We carry out coastal waste censuses, with collection activities together with scouts and children's educational centres. For the last two years we have been carrying out the Coastal Waste Census of the Atlantic Coast of Buenos Aires. Bird censuses (of the Red Hemisfèrica de Reservas de Aves Playeras y de Aves Argentinas), the last ones can be seen in eBird of The Cornell Lab of Ornithology.

Awareness-raising activities by giving talks, exhibitions and environmental workshops associated with the impacts of marine debris on the environment, conservation of local flora and fauna, and conservation of endangered species. Natural interpretation field trips along the coast, with educational institutions and the general public.

We work with Child Support Centres; with the National University of the South with the University Volunteer Project: "Getting to know the Arroyo Pareja - Cantarelli Island Wetland"; with scout groups; with the Provincial University of the Southwest with the University Volunteer programme "Healthy Environment for All", and with the Hemispheric Network of Shorebird Reserves.


We are currently preparing an inventory of flora and a new project to declare it a Natural Protected Area (we have already made one in 2014, but the Provincial Agency for Sustainable Development objected to it for lack of information, which we are currently working on).

In addition, we carried out a photographic project "We are all nature" and a drawing competition "Painting Biodiversity".

Three main achievements

Birdwatching: because there are a large number of birds in a small area and they are very varied. From the NGO we lend optical equipment so that the observers can appreciate them without disturbing them.
Natural interpretation outings: Because people discover natural environments that, although they are close to the city, are unknown to them. They discover curiosities about plants and insects.
Coastal clean-up activities: We are mainly accompanied by children, and they are a success because the site tends to fill up with debris (brought by the tide) and seeing it clean is a radical change. At the end of the clean-up activities we do a small bird watching activity.

Three main challenges

Preventing people from throwing waste on the shore: this site is little valued, as for the local population it is just a worthless "crab patch", so they tend to throw waste and fishing lines on the shore.

Maintenance of the bird observatory: As the site is open to the general public, they do not take care of the facilities: they damage the paint, the signage and even set fire to the adjacent grassland in 2017.

Acquire funds to carry out environmental studies: The flora surveys we need require the presence of specialists, to whom we cannot even provide support for their private mobility.


Areas of expertise

Interpretation techniques

Create signage / site information


Engaging young people; Engaging the local community; Working with volunteers

Education and communication

Working with primary schools; Lobbying / running campaigns; Working with secondary schools; Developing resources / materials


PR and marketing; Project planning



NGO Wetland Arroyo Pareja - Isla Cantarelli

Contact: Guadalupe Muriel Alvarez

Address: 9 de Julio 2051, Partido Coronel de Marina Leonardo Rosales, Ciudad de Punta Alta, Buenos Aires, Argentina

Telephone: 02932-15614462


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