Los manglares de Colombia y la recuperación de sus áreas degradadas: revisión bibliográfica y nuevas experiencias

Álvarez-León, Ricardo

doi:10.21829/myb.2003.911286

Cited by 19 publications

(9 citation statements)

References 7 publications

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“…Although the geographic distribution of species composition and structural characteristics of mangroves are mainly determined by interactions between regional factors (e. g., tides, freshwater hydrology) and geomorphology (Krauss et al, 2008), anthropogenic exploitation has substantially altered the biological characteristics of individual forests. As a result, these forests are among the most threatened ecosystems worldwide (Dahdouh-Guebas, 2000;A ´lvarez-Leo ´n, 2003;Blanco, 2009). Polidoro et al (2010) report that the highest proportion of threatened mangrove species in the world occurs in Costa Rica, Colombia, and Panama, with 25-40% of mangrove species classified as threatened under the IUCN Red List Categories of Critically Endangered, Endangered and Vulnerable.…”

Section: Introductionmentioning

confidence: 99%

Mangrove timber use as an ecosystem service in the Colombian Pacific

Palacios

Cantera

2017

Hydrobiologia

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Mangroves provide ecosystem services for local communities. However, in coastal systems it is yet unknown how human settlements are directly interacting with mangroves. We assessed the use of mangroves as an ecosystem service at Ma ´laga and Buenaventura bays, on the Colombian Pacific coast, by interviewing local communities and examining the impact of mangrove harvest on the structure of the forest, an often overlooked effect. Results showed that mangroves are mainly harvested for their wood. Rhizophora spp. are the main source of wood for fuel purposes, whereas Mora oleifera (Triana ex Hemsl.) Ducke, a mangrove associate, provides 100% of the wood used for the construction of stilt houses. The selective extraction of these species has altered the composition and structure of the forest. Sample sites undergoing harvest have relatively low densities of mangroves; however, one site at Quebrada Valencia shows signs of copious regeneration ([9000 seedlings/ha). Due to the importance of mangroves for the subsistence of coastal communities, and the threat that mangroves are exposed to in Colombia, the management of mangroves should be a priority. Managers must address the sustainability of critical species as part of conservation strategies in order to maintain ecosystem services for local communities.

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Section: Introductionmentioning

confidence: 99%

Mangrove timber use as an ecosystem service in the Colombian Pacific

Palacios

Cantera

2017

Hydrobiologia

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“…were compiled: 82 in the Pacific and 25 in the Caribbean. Since the Caribbean basin exhibits a greater humandomination in the coastalscapes (Álvarez-León and Polanía-Vorenberg, 1996;Álvarez-León, 2003), the occurrences of Pelliciera spp. were pooled into three Caribbean regions (Urabá Gulf, Morrosquillo Gulf and two bays in the vicinity of Cartagena City).…”

Section: Study Locationmentioning

confidence: 99%

Threatened Mangroves in the Anthropocene: Habitat Fragmentation in Urban Coastalscapes of Pelliciera spp. (Tetrameristaceae) in Northern South America

Blanco-Libreros

Ramírez-Ruiz

2021

Front. Mar. Sci.

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Mangroves are fragmented habitats thriving in human-dominated coastalscapes worldwide. They provide refuge to threatened plant species, such as the Neotropical Piñuelo Mangrove (formerly the monotypic Pelliciera genus, recently split into two species: P. rhizophorae and P. benthamii). However, little is known about the relationship between urbanization and the spatial configuration of mangrove habitat and how it would drive ecological and evolutionary changes in the small populations of Pelliciera spp. We used open data (e.g., land cover, mangrove cover) for 107 locations of Pelliciera spp. in Colombia (extant populations) to assess coastalscape structure and urbanization. We described coastalscape composition dynamics (for 2000 and 2010) and mangrove habitat configuration along a human-domination gradient, using landscape metrics. We computed an urban index to compare urbanization intensity among the study areas along the Caribbean coast and compared coastalscape structure and mangrove spatial metrics between basins (Caribbean and Pacific). The proportion of artificial surfaces was greater in the Caribbean than in the Pacific, but no temporal difference was found. The Caribbean basin exhibited a greater Urban Index, particularly in Cartagena and Urabá. Mangrove fragmentation was also greater in the Caribbean and it was influenced by the degree of urbanization. Mangrove area and core area were smaller in the Caribbean than in the Pacific, while cohesion was significantly lower in Cartagena than in other urban areas of the Caribbean. We propose a conceptual eco-evolutionary framework for linking mangrove patch reduction and isolation to demographic variables of Pelliciera spp. Edge effects are expected to affect birth and mortality rates in small patches. Small patches and small effective populations are expected to be more sensitive to novel biotic interactions, extreme weather, and gradual climate change. Isolation will also influence both emigration and immigration rates of propagules. We propose: (1) Assessing the conservation status of the two species, (2) setting monitoring programs of their populations of Pelliciera spp. and their surrounding coastalscapes (particularly in the Caribbean, (3) declaring protected areas, in wild and urban settings, to reduce mangrove fragmentation and urbanization.

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“…This may eventually reduce the effectiveness of conservation legislation and impair mitigation and adaptation to global climate changes (Painel Brasileiro de Mudanças Climáticas, ). Rehabilitation of degraded mangrove areas also became a frequent topic in the legal processes of environmental impact assessment, as well as a compensation tool after environmental accidents and integrating mangrove protection into consideration of tourist and urban developments (Alvarez‐León, ; Ferreira & Lacerda, ; López‐Angarita et al, ). Indeed, even though tourism development can have a strong impact on mangroves, it can be a powerful economic motivation to restore them.…”

Section: Neotropical Mangroves In the Recent Anthropocenementioning

confidence: 99%

Neotropical mangroves: Conservation and sustainable use in a scenario of global climate change

Lacerda

Borges

Ferreira

2019

Aquatic Conservation

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This study assesses the evolution of major anthropogenic drivers of environmental impacts on Neotropical mangroves, the changes in the environmental pressures acting upon them, and the respective societal responses during the past 40 years. It reviews the impacts of new drivers, in particular those resulting from global climate change and the expansion in aquaculture and the effectiveness of local societal responses aimed at addressing them. Adaptation and mitigation actions are proposed to cope with the impacts and their socio‐economic consequences for Latin America and Caribbean mangroves. By comparing the situation in Latin America and the Caribbean with other regions, the knowledge gaps and priority research needs are discussed to support delineating a preliminary unifying framework to address the environmental pressures affecting mangroves. This scenario necessarily includes the interaction of climate change with human interventions and their effects on ecosystem goods and services, as well as their respective adaptation and management options. Results show that drivers of environmental impacts have changed in the past 40 years, reducing the effectiveness of some important societal responses towards conservation and sustainable management with a great potential to increase rates of mangrove deforestation and conversion to human uses. Although efforts in conservation and restoration have contributed to decreasing pressure on these ecosystems, the coupling of old drivers, such as damming, with climate change, and the appearance of new drivers in the region, such as shrimp aquaculture, may eclipse the gains made through these conservation efforts. Despite the negative trend, we discuss some successful efforts to curb negative impacts of human activities on mangroves. We also recommend regional assessments based on primary sources in the representative mangrove‐bearing countries throughout the continent to allow the upscaling of their experiences towards a regional response to the challenges facing Neotropical mangrove conservation and sustainable use.

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Los manglares de Colombia y la recuperación de sus áreas degradadas: revisión bibliográfica y nuevas experiencias

Cited by 19 publications

References 7 publications

Mangrove timber use as an ecosystem service in the Colombian Pacific

Mangrove timber use as an ecosystem service in the Colombian Pacific

Threatened Mangroves in the Anthropocene: Habitat Fragmentation in Urban Coastalscapes of Pelliciera spp. (Tetrameristaceae) in Northern South America

Neotropical mangroves: Conservation and sustainable use in a scenario of global climate change

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