Rio Lima Special Area of Conservation

Rio Lima Special Area of Conservation is a protected natural area in northern Portugal that follows the valley of the Lima River, including the stretch around Ponte de Lima. It belongs to the European Natura 2000 network as a special area of conservation for habitats (site code PTCON0020). It suits visitors who enjoy nature, riverside walks and birdwatching, rather than those looking for a classic attraction with a ticket office.

What is this area?

The site protects the natural environment surrounding the Lima River. It lies in the Norte region and belongs to the Atlantic biogeographical region, which means a mild, humid climate that favours lush vegetation. Its area is roughly 54 square kilometres, a little over five thousand hectares. Sources give slightly different figures, but the order of magnitude is always the same.

Its status comes from the European Union Habitats Directive. This does not close the land to visitors, but it does mean that preserving habitats and species takes priority over development or intensive use.

What is protected here?

The area covers 13 habitat types listed in Annex I of the Habitats Directive, two of them classed as priority habitats. It also protects 33 species covered by the EU nature directives: 21 birds, 5 fish, 3 invertebrates, 2 mammals, 1 amphibian and 1 reptile.

Among the river's less common residents is the ruivaco, a small cyprinid fish found in the north-west of the Iberian Peninsula.

The estuary and its sandy islets

The most distinctive habitats are tied to the place where the Lima meets the Atlantic, near Viana do Castelo. The sandy islets known locally as ínsuas are covered in salt meadows, pioneer glasswort (Salicornia) vegetation and cordgrass meadows. Mudflats exposed at low tide attract feeding waterbirds. If birds are your main interest, the area around the river mouth tends to be more rewarding than the upper valley.

Around Ponte de Lima

Near Ponte de Lima the site feels more like a river corridor than an estuary. The Lima flows between fields and wooded banks. The oak woodland that once covered the valley survives only in small patches, having largely given way to eucalyptus plantations and maritime pine. Invasive species such as acacias and Elodea are also a notable problem in this part of the valley.

Ponte de Lima is a convenient base. From the town you can set out on a walk along the river and see the landscape that gave the whole area its name.

Practical tips

• The area is large and has no single entrance or gate. Pick the stretch of riverbank that fits your plans.
• Early morning is usually the best time for birdwatching, when it is quiet and few people are about.
• Bring binoculars and comfortable, water-resistant shoes, since the banks can be damp.
• Keep noise down, stay on paths rather than crossing wet meadows, and do not pick plants.

Frequently asked questions

Is there an entrance fee? No. It is open natural terrain, not a ticketed venue.

How big is the area? About 54 square kilometres, over five thousand hectares along the Lima River.

What is most valuable here? The variety of habitats, from salt meadows in the estuary to inland riverbanks, and the 33 protected species, mostly birds.

Is it a good place for families? Yes, if you enjoy short walks by the water. Remember that it is a protected area, so respect for nature is expected.