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  • Author Asian Development Bank
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Ten years after feral goat eradication: the active restoration of plant communities on Guadalupe Island, Mexico
Biodiversity Conservation, BRB
Available Online

Aguirre-Muñoz, A.

,

Cárdenas-Tapia, A.

,

García-Carreón, J.S.

,

Hernández-Montoya, J.C.

,

Luna-Mendoza, L.

,

Luvianos-Colín, S.

,

Méndez-Sánchez, F.

,

Puebla-Hernández, O.

,

Torres-Aguilar, M.

2019
As the ?rst step towards the ecological restoration of its islands, Mexico has completed 60 eradications of invasive mammals thanks to a strong partnership between Grupo de Ecología y Conservación de Islas, A.C. (GECI), the federal government, local ?shing communities, academia, and private donors. The removal of invasive mammals has led to the dramatic recovery of the islands’ ecosystems. On Guadalupe Island, after completing the goat eradication in 2007, the native vegetation started to recover. Plants considered extinct or extirpated have been rediscovered, and plant species new to the island have been recorded. However, in order to achieve the island’s full recovery, the active restoration of degraded soils and vegetation are needed. To date, GECI, in collaboration with the National Forestry Commission (CONAFOR) and the National Commission for Natural Protected Areas (CONANP), is implementing a 700 ha project to accelerate the restoration of the native vegetation communities. The project involves reforestation, erosion control, and ? re prevention actions on different plant communities: forests and sage scrub. An on-site nursery has been established, seedlings—mostly from endemic trees—are being grown, and on-site reforestation planting has started. Up to June 2018, we have planted almost 40,000 trees, and will produce 160,000 seedlings during this year. Mechanical methods to control and prevent erosion have been used as we have installed more than 2,400 m of contour barriers, 57 m3 of dams, and rehabilitated ?rebreaks. The actions will continue: the long-term goal being the comprehensive restoration of the vegetation communities devastated by feral goats. The Guadalupe Island experience will be useful to inform the restoration of other Mexican islands.
Recovery and current status of seabirds on the Baja California Pacific Islands, Mexico, following restoration actions
Biodiversity Conservation, BRB
Available Online

Aguilar-Vargas, A.

,

Aguirre-Muñoz, A.

,

Aztorga-Ornelas, A.

,

Bedolla-Guzmán, Y.

,

Bravo-Hernández, E.

,

Corrales-Sauceda, M.

,

Cárdenas-Tapia, A.

,

Fabila-Blanco, A.

,

Félix-Lizárraga, M.

,

Hernández-Montoya, J.

,

Hernández-Ríos, A.

,

Latofski-Robles, M.

,

Luna-Mendoza, L.

,

Méndez-Sánchez, F.

,

Ortiz-Alcaraz, A.

,

Rojas-Mayoral, E.

,

Solís-Carlos, F.

,

Torres-García, F.

2019
The Baja California Pacifc Islands, Mexico, are globally important breeding sites for 22 seabird species and subspecies. In the past, several populations were extirpated or reduced due to invasive mammals, human disturbance, and contaminants. Over the past two decades, we have removed invasive predators and, for the last decade, we have been implementing a Seabird Restoration Programme on eight groups of islands: Coronado, Todos Santos, San Martín, San Jerónimo, San Benito, Natividad, San Roque, and Asunción. This programme includes monitoring; social attraction techniques; removal of invasive vegetation; reducing human disturbance; and an environmental learning and biosecurity programme. Here, we summarise historical extirpations and recolonisations during the last two decades of restoration actions, and we update the status of breeding species after more than a decade. To date, from 27 historically extirpated populations, 80% have returned since the ?rst eradication in 1995. Social attraction techniques were key in recolonisations of Cassin’s auklet (Ptychoramphus aleuticus), royal tern (Thalasseus maximus), and elegant tern (T. elegans). A total of 19 species breed on these islands, four more species than a decade ago, including 12 new records. The most abundant seabirds, black-vented shearwater (Puffnus opisthomelas), Cassin’s auklet, western gull (Larus occidentalis), and Brandt’s cormorant (Phalacrocorax penicillatus), have shown a remarkable population increase. Current threats include the potential reintroduction of invasive mammals, guano mining, recreational activities, pollution, and commercial ?sheries. To maintain these conservation gains in the long-term it is necessary to continue implementing restoration actions and reinforcing protection on these important natural protected areas.