Economic valuation of kelp forests in northern Chile: values of goods and services of the ecosystem

  title={Economic valuation of kelp forests in northern Chile: values of goods and services of the ecosystem},
  author={Julio A. V{\'a}squez and Sergio Z{\'u}{\~n}iga and Fadia Tala and Nicole Piaget and Den{\'i} Rodr{\'i}guez and J. M. Alonso Vega},
  journal={Journal of Applied Phycology},
Kelp beds, besides being one of the most important benthic resources in northern Chile, provide a variety of environmental goods and services. In order to evaluate economically the wild kelp populations in northern Chile (26° to 32° S) more than simply their commercial value as a source of raw materials for alginate extraction, we used several economic indicators to holistically assess the value of a group of brown seaweeds of economic importance, Lessonia spp. and Macrocystis pyrifera: (1… 

56. Kelps: the key to sustainable harvest of marine biodiversity

Most of the world has become acquainted with the concerns over overfishing and pollution as major threats to the commercial harvest of marine animals and the health of the seas and oceans. This

Bioeconomic analysis of giant kelp Macrocystis pyrifera cultivation (Laminariales; Phaeophyceae) in northern Chile

The results of the baseline model show that cultivation is not profitable in the long term considering the selling price and the harvest yield, but in a scenario in which productivity is 211 % higher than the base harvest, cultivation becomes profitable, with positive net present values (NPV) after 14 years.

Status and Trends for the World’s Kelp Forests

The intensity of kelp harvesting shapes the population structure of the foundation species Lessonia trabeculata along the Chilean coastline

It is suggested that different degrees of protection can influence density and morphology of subtidal L. trabeculata populations, which has important implications for the conservation of the kelp forest ecosystems and management of this important fishery.

Assessing the ecosystem-level consequences of a small-scale artisanal kelp fishery within the context of climate-change.

It is detected a negative impact of warmer seawater temperatures on kelp recovery rates following harvest, indicating that the viability of harvest, even at small scales, may be threatened by future increases in global ocean temperature, and suggests that negative impacts of artisanal fisheries may be more likely to arise in the context of a warming climate.

Sustainable harvesting of wild seaweed resources

As the popularity of seaweeds increases and the use of less traditional species with novel applications comes to the fore, it is critically important to make certain that the sustainability of the resource is ensured given the increased pressures of harvesting.

A modelled global distribution of the kelp biome




Production, use and fate of Chilean brown seaweeds: re-sources for a sustainable fishery

  • J. Vásquez
  • Environmental Science
    Journal of Applied Phycology
  • 2007
Sustainability of Chilean kelp subjected to intense harvesting would require management programs including the following bio-ecological recommendations, which must be implemented in a National Program of Kelp Management, elaborated by government, scientists, fisherman, and industry.

The Lessonia nigrescens fishery in northern Chile: “how you harvest is more important than how much you harvest”

Results show that, despite the enormous harvesting pressure on Lessonia density and biomass, the associated macroinvertebrate richness has been maintained, due to normal plant growth and high recruitment all year round.

Using marine macroalgae for carbon sequestration: a critical appraisal

There has been a good deal of interest in the potential of marine vegetation as a sink for anthropogenic C emissions (“Blue Carbon”). Marine primary producers contribute at least 50% of the world’s


A global synthesis suggests that the great plasticity in Macro Cystis form and function is a key determinant of the great global ecological success of Macrocystis.

Ecology of Kelp Communities

The giant kelp, Macrocystispyrifera, forms dense forests in many parts of the world including areas of the northeast Pacific, the southern shores of South America, many Southern Ocean islands, and isolated areas of South Africa, Australia, and New Zealand.

Production, respiration and exudation of dissolved organic matter by the kelp Laminaria hyperborea along the west coast of Norway

The exudation rates correlated with the plant strategy of growth and production in which high requirements for growth led to a lower proportion of fixed carbon being exuded, and more fixed carbon was exuded during the non-growth phase.

Coastal plant communities of Latin America

Economic valuation of wetlands.

The economic valuation of wetlands helps to understand the constituent's functions and benefits and this exercise could act as a catalyst for wetland conservation.

Linking human activity and ecosystem condition to inform marine ecosystem based management

There is growing consensus that integrated marine management is needed. However, implementation of ecosystem-based management (EBM) faces major operational challenges, including accurately