Restoration of mangroves at balandra lagoon
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Restoration of mangroves at Balandra Lagoon. 2006. One of the two lagoons of Balandra. La Paz - 25 Km. MANGROVE FOREST. The second lagoon at Balandra. Mostly covered with mangrove forest. Part of the deforested area in 1994 (Clearcut, possibly in 1990-1991).

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Restoration of mangroves at Balandra Lagoon

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Restoration of mangroves at balandra lagoon

Restoration of mangroves at Balandra Lagoon

2006


One of the two lagoons of balandra

One of the two lagoons of Balandra

La Paz - 25 Km

MANGROVE FOREST


The second lagoon at balandra

The second lagoon at Balandra

Mostly covered with mangrove forest


Part of the deforested area in 1994 clearcut possibly in 1990 1991

Part of the deforested area in 1994(Clearcut, possibly in 1990-1991)


Part of the deforested area in 1994 clearcut possibly in 1990 19911

Part of the deforested area in 1994(Clearcut, possibly in 1990-1991)


The deforested area did not regenerate itself for several years

The deforested area did not regenerate itself for several years

The solution:

Reforestation by nursery-reared trees planted in strategic places in the right habitat


Native propagules propagation units of black mangrove as a source for the nursery

Native propagules (propagation units) of black mangrove as a source for the nursery


Aerial roots of black mangroves where the microbial activity is intense

AERIAL ROOTS OF BLACK MANGROVES -- WHERE THE MICROBIAL ACTIVITY IS INTENSE

LAGOON

Underground

section

MUD

Toledo et al. 1995. Cyanobacteria and black mangroves

in Northwestern Mexico: colonization, and diurnal and seasonal

nitrogen fixation on aerial roots.

Canadian Journal of Microbiology 41: 999-1011


Colonization biofilm of the surface of the aerial root of black mangrove

COLONIZATION (biofilm) OF THE SURFACE OF THE AERIAL ROOT OF BLACK MANGROVE

bacteria

Anabaena

Filamentous Cyanobacteria

COMPLETELY HIDDEN ROOT SURFACE

1 

Toledo et al. Can. J. Microbiol. 1995


Colonization of mangrove roots in vitro with the cyanobacteria microcoleus sp

COLONIZATION OF MANGROVE ROOTS (in vitro) WITH THE CYANOBACTERIA Microcoleus sp.

BOTTOM OF ERLENMEYER FLASK

CYANOBACTERIA

COLONIES

ROOTS

Toledo et al. 1995. In vitro colonization and increase in

nitrogen fixation of seedling roots of black mangrove inoculated

by a filamentous cyanobacteria.

Canadian Journal of Microbiology41:1012-1020


Colonization of mangrove roots in vitro by the cyanobacteria microcoleus sp

COLONIZATION OF MANGROVE ROOTS (in vitro) BY THE CYANOBACTERIA Microcoleus sp.

Root surface

100 

Toledo et al. 1995. In vitro colonization and increase in nitrogen fixation of seedling roots of black mangrove inoculated by a filamentous cyanobacteria. Canadian Journal of Microbiology41:1012-1020


Colonization of mangrove roots in vitro by the cyanobacteria microcoleus sp1

COLONIZATION OF MANGROVE ROOTS (in vitro) BY THE CYANOBACTERIA Microcoleus sp.

10 

Root surface

Toledo et al. Can. J. Microbiol. 1995


Nursery reared black mangrove

Nursery-reared black mangrove


Measuring the current in the reforested area

Measuring the current in the reforested area


Strategic site was found a shallow channel drained both deforested areas

Strategic site was found, a shallow channel drained both deforested areas


Restoration of mangroves at balandra lagoon

Exit of channel from

reforested site

Inner lagoon


Restoration of mangroves at balandra lagoon

The reforested site is located in the main drainage channel in the two deforested areas.

Once the trees grow, we hope that their foliage, submerged in the water at high tide, will trap floating propagules and allow more trees to grow in the area.

Reforested area

Sand dune


Reforestation at low tide

Reforestation at low tide


Reforesting the strategic area

Reforesting the strategic area

The site was “protected” from beach visitors by a deep trench filled with soft silt


Restoration of mangroves at balandra lagoon

At planting

One day later.

Passing the first tides

under field conditions


One year later

One year later


Two years later

Two years later


Four and more years later

Four and more years later

  • The reforested area accumulated organic debris and trapped floating propagules

  • This allows establishment of floating propagules in the area

  • Consequently, the reforested area gained many more new trees than we planted


In 1995 general view of one deforested area

In 1995, general view of one deforested area


In 2006 general view of reforested area

In 2006, general view of reforested area


Ground view of deforested area in 1995

Ground view of deforested area in 1995


Ground view of reforested area in 2006

Ground view of reforested area in 2006


General view of the second deforested areas in 1995

General view of the second deforested areas in 1995


In 2006 general view of the same area after reforestation

In 2006, general view of the same area after reforestation


Wildlife returns to the reforested areas

Wildlife returns to the reforested areas


Wildlife returns to the reforested areas fish the major economic contribution of mangroves

Wildlife returns to the reforested areas: fish, the major economic contribution of mangroves

Juvenile fish


Fully reforested areas are returned to public recreation activities

Fully reforested areas are returned to public recreation activities


Restoration of mangroves at balandra lagoon

Photographed by: Yoav Bashan

Presentation by:

Juan Pablo Hernandez


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