Qualla: Maranhão mangroves

Maranhão mangroves: Introduction

Sat, 18 Apr 2026 00:00:00 GMT

Photo credit Every-leaf-that-trembles, CC BY-SA 4.0. Half of Brazil's shorebirds feed in these trees. The figure sounds improbable until you see the place from above - a coast that no longer looks like a coast, but like something the Atlantic is still in the process of negotiating with the land. Tides in the Maranhão mangroves can rise eight meters at the spring peak, and because the land is flat and soaked with rainfall, salt water reaches as much as forty kilometers inland. The mangroves follow the water. The result is an ecoregion of 11,300 square kilometers, or roughly the area of Lebanon, that is neither entirely ocean nor entirely terrestrial.

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Image: Every-leaf-that-trembles | CC BY-SA 4.0

Maranhão mangroves: A Coast That Keeps Its Own Shape

Sat, 18 Apr 2026 00:00:00 GMT

Photo credit stop_me, CC BY 2.0. In Portuguese it is called the *Reentrâncias Maranhenses* - the Maranhão indentations - and that word is the better description. From the Pará border in the west to the mouth of the Parnaíba River in the east, the coastline is a shredded mess of bays, islands, peninsulas, and mud...

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Image: stop_me | CC BY 2.0

Maranhão mangroves: Six Species of Tree, One Architecture

Sat, 18 Apr 2026 00:00:00 GMT

Photo credit stop_me, CC BY 2.0. Six mangrove species make up most of the forest. Closest to the sea stands *Rhizophora mangle*, the red mangrove, which can reach 25 meters and holds itself above the waterline on stilt roots that arch out from the trunk like flying buttresses. Behind the red mangrove come *Avice...

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Image: stop_me | CC BY 2.0

Maranhão mangroves: The Birds That Make the Case for Protection

Sat, 18 Apr 2026 00:00:00 GMT

Photo credit stop_me, CC BY 2.0. Seven percent of all shorebirds in South America feed in these mangroves. That statistic is what conservationists cite when they argue for Ramsar designation and protected area status, and it is earned. The mangroves support herons, egrets, and the roseate spoonbill with its impr...

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Image: stop_me | CC BY 2.0

Maranhão mangroves: A Place That Resists Easy Access

Sat, 18 Apr 2026 00:00:00 GMT

Photo credit stop_me, CC BY 2.0. The reason the ecoregion remains mostly intact is the same reason few outsiders have visited it. There are very few roads. The human population is low. What settlement exists is spread out among the artisanal fishermen who live along the edges and paddle into the mangroves at low...

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Image: stop_me | CC BY 2.0

Maranhão mangroves: What the WWF Calls Vulnerable

Sat, 18 Apr 2026 00:00:00 GMT

Photo credit stop_me, CC BY 2.0. The World Wildlife Fund classifies the Maranhão mangroves as Vulnerable - which, in the language of ecoregion assessments, means the place is not yet in crisis but will be if current trends continue. Protection is a patchwork. The Bacanga State Park covers a small fragment near S...

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Image: stop_me | CC BY 2.0