Alejandro H. Buschmann

Alejandro H. Buschmann
Universidad de Los Lagos · Research and Development Centre for Coastal Resources and Environments

Ph.D.
At present our most important research goal is to understand kelp sexual reproduction complexities on biomass yield

About

233
Publications
169,645
Reads
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Introduction
Alejandro H. Buschmann currently works at the Research and Development Centre for Coastal Resources and Environments, Universidad de Los Lagos. Alejandro does research in Aquaculture, Biogeography and Ecology. Their current project is 'Towards the understanding of giant kelp (Macrocystis pyrifera) marine agronomy under stressful periods of cultivation. and is part of the Biotechnology and Bioengineering Center leading the "seaweed" group towards finding novel applications.
Additional affiliations
March 2000 - December 2015
Universidad de Los Lagos
Position
  • Senior Researcher
Description
  • Description of research center can be found at www.i-mar.cl and also member of the Center for Biotechnology and Bioengineering (CeBiB) and information can be found at www.CeBiB.cl
August 1986 - present
Universidad de Los Lagos
Position
  • Professor (Full)
Description
  • My research covers coastal ecology related to seaweeds. Also, sustainable aquaculture is another major field of interest mostly related to Integrated Multitrophic Aquaculture (IMTA) and antibiotic use and environmental and human health risk assessment
August 1986 - December 2015
Universidad de Los Lagos
Position
  • Senior Researcher
Education
March 1984 - June 1995
Pontificia Universidad Católica de Chile
Field of study
  • Marine Ecology

Publications

Publications (233)
Article
Full-text available
Solar radiation effects on the ecophysiology and biochemical responses of the brown macroalga Macrocystis pyrifera (L.) C. Agardh were evaluated using a mesocosm approach in Southern Chile. Treatments with different radiation attenuations were simulated with three vertical attenuation coefficients: (1) total (Kd = 0.8 m−1), (2) attenuated (Kd = 1.2...
Article
The sustainability of aquaculture has been debated intensely since 2000, when a review on the net contribution of aquaculture to world fish supplies was published in Nature. This paper reviews the developments in global aquaculture from 1997 to 2017, incorporating all industry sub-sectors and highlighting the integration of aquaculture in the globa...
Article
Full-text available
The rapid, global spread of COVID-19, and the measures intended to limit or slow its propagation , are having major impacts on diverse sectors of society. Notably, these impacts are occurring in the context of other anthropogenic-driven threats including global climate change. Both anthropogenic stressors and the COVID-19 pandemic represent signifi...
Article
Full-text available
The capacity of marine organisms to adapt and/or acclimate to climate change might differ among distinct populations, depending on their local environmental history and phenotypic plasticity. Kelp forests create some of the most productive habitats in the world, but globally, many populations have been negatively impacted by multiple anthropogenic...
Article
Macrocystis pyrifera gametophytes growing under controlled conditions produce juveniles with different numbers of fronds, i.e. few (≤ 2) or multiple fronds (≥ 3). We describe these morphotypes and test whether the number of fronds may impact juvenile growth by performing laboratory and field experiments. Kelp reproductive material was collected in...
Article
Full-text available
2022) Reproduction, hatchery and culture applications for the giant kelp (Macrocystispyrifera): a methodological appraisal, Applied Phycology, 3:1, 368-382, ABSTRACT Although much is known regarding the physiology, ecology and life history of Macrocystis pyrifera, there is little accessible information for establishing robust and reliable culturing...
Preprint
Full-text available
The red alga Gracilaria chilensis C. J. Bird, McLachlan & E. C. Oliveira (Agarophyton chilense Gurgel, J.N.Norris & Fredericq) is one of the few algae commercially farmed in Chile, where this alga is commonly named “Pelillo”. G. chilensis main by-product is agar, a gelling agent used in the food and pharmaceutical industries. This alga is also a va...
Article
Full-text available
Early naturalists suggested that predation intensity increases toward the tropics, affecting fundamental ecological and evolutionary processes by latitude, but empirical support is still limited. Several studies have measured consumption rates across latitude at large scales, with variable results. Moreover, how predation affects prey community com...
Article
Early naturalists suggested that predation intensity increases toward the tropics, affecting fundamental ecological and evolutionary processes by latitude, but empirical support is still limited. Several studies have measured consumption rates across latitude at large scales, with variable results. Moreover, how predation affects prey community com...
Article
Early naturalists suggested that predation intensity increases toward the tropics, affecting fundamental ecological and evolutionary processes by latitude, but empirical support is still limited. Several studies have measured consumption rates across latitude at large scales, with variable results. Moreover, how predation affects prey community com...
Article
Full-text available
We report for the first time the occurrence of the Japanese kelp Saccharina japonica on the Pacific coast of southern Chile following an illegal introduction for aquaculture purposes. In November 2020, a citizen complaint indicated that the non-native kelp was being illegally farmed in Canal Caicaén. Specimens of the non-native kelp were collected...
Technical Report
Full-text available
Macroalgae (or seaweed) aquaculture can potentially provide many ecosystem services, including climate change mitigation, coastal protection, preservation of biodiversity and improvement of water quality. Nevertheless, there are still many constraints and knowledge gaps that need to be overcome, as well as potential negative impacts or scale-depend...
Article
Full-text available
ABSTRACT Finding ways to keep global warming under 1.5 degrees Celsius is urgent and will need a portfolio of solutions. Seaweeds are marine photosynthetic organisms that humans harvest either from the wild or farm, to be used in many applications and providing various ecosystem services. large scale farming of seaweeds for absorbing carbon has lat...
Article
The COVID-19 global pandemic has had severe, unpredictable and synchronous impacts on all levels of perishable food supply chains (PFSC), across multiple sectors and spatial scales. Aquaculture plays a vital and rapidly expanding role in food security, in some cases overtaking wild caught fisheries in the production of high-quality animal protein i...
Article
Fredericq) is one of the few algae commercially farmed in Chile, where this alga is commonly named "Pelillo". G. chilensis main by-product is agar, a gelling agent used in the food and pharmaceutical industries. This alga is also a valuable feedstock for the biorefinery of phycobiliproteins (PBPs), colored and fluorescent water-soluble proteins wit...
Article
Full-text available
Highlights 1. This policy brief highlights key challenges that must be addressed for the long-term sustainability of the global seaweed industry, ensuring its role in providing nature-based solutions within the sustainable ocean economy agenda and in contributing to the UN Decade of Ocean Science for Sustainable Development (2021-2030). 2. Seaweed...
Technical Report
Full-text available
Cottier-Cook, E.J., Nagabhatla, N., Asri, A., Beveridge, M., Bianchi, P., Bolton, J., Bondad-Reantaso, M.G., Brodie, J., Buschmann, A., Cabarubias, J., Campbell, I., Chopin, T., Critchley, A., De Lombaerde, P., Doumeizel, V., Gachon, C.M.M., Hayashi, L., Hewitt, C.L., Huang, J., Hurtado, A.Q., Kambey, C., Kim, G.H., Le Masson, V., Lim, P.E., Liu, T...
Article
Full-text available
Abstract Mechanisms that reliably and efficiently guide practitioners to find relevant evidence are urgent for conservation decision‐making in Chilean Patagonia. The objective of this study was to systematically collect, characterize, and synthesize the extensive evidence about conservation knowledge in Chilean Patagonia focusing on the impacts of...
Article
Macroalgal holobiont studies involve understanding interaction among the host, its microbiota and the environment. We analyzed the effect of bacteria–kelp interactions on phenotypic responses of two genetically‐distinct populations of Macrocystis pyrifera (north and south) exposed to different nitrogen (N) concentrations. In co‐culture experiments...
Chapter
Full-text available
Resumen. Este capítulo analiza la información disponible respecto de los principales motores de cambio global que operan en la Patagonia: cambio climático y su impac-to sobre la biodiversidad; la introducción de especies exóticas; cambio en el uso y cobertura del suelo, y algunos motores de cambio global emergentes tales como las floraciones algale...
Chapter
Full-text available
Resumen. Mientras que la acuicultura en los fiordos y canales patagónicos ha ex-perimentado un crecimiento sostenido durante las últimas cuatro décadas, aún no conocemos a cabalidad la magnitud e intensidad de sus impactos ambientales. Basado en revisiones realizadas en el pasado reciente y nuevos artículos científicos, en el presente capítulo resu...
Article
Full-text available
Solar radiation effects on the ecophysiology and biochemical responses of the brown macroalga Macrocystis pyrifera (L.) C. Agardh were evaluated using a mesocosm approach in Southern Chile. Treatments with different radiation attenuations were simulated with three vertical attenuation coefficients: (1) total (Kd = 0.8 m−1), (2) attenuated (Kd = 1.2...
Article
Full-text available
A Correction to this paper has been published: https://doi.org/10.1038/s41586-021-03508-0.
Article
Full-text available
The rapid, global spread of COVID-19, and the measures intended to limit or slow its propagation, are having major impacts on diverse sectors of society. Notably, these impacts are occurring in the context of other anthropogenic-driven threats including global climate change. Both anthropogenic stressors and the COVID-19 pandemic represent signific...
Conference Paper
Full-text available
Este trabajo revisa el desarrollo del concepto de Acuicultura Integrada Multi-Trófica (IMTA) y sus beneficios ambientales y productivos. Analiza los avances y restricciones que existen actualmente y plantea la necesidad de establecer sistemas demostrativos a escala comercial, incorporando sus externalidades ambientales. Se plantean los beneficios d...
Article
Full-text available
Epiphytism is a common phenomenon in macroalgal aquaculture worldwide. This problem can affect the productivity and quality of the farmed species which may have socioeconomic consequences for the human communities that depend on this activity. In southern Chile, the aquaculture of the red macroalga Agarophyton chilense in the area of Maullín River...
Article
Full-text available
The objective of this study was to test, using a field experiment, the effect of geno- typic diversity on productivity of farmed populations (Ancud and Chaica, Chile) of the domesticated red alga Agarophyton chilense (formerly known as Gracilaria chilen- sis), a species considered as economically important in Chile. Monoclonal and poly- clonal (4 a...
Article
Full-text available
The objective of this study was to test, using a field experiment, the effect of genotypic diversity on productivity of farmed populations (Ancud and Chaica, Chile) of the domesticated red alga Agarophyton chilense (formerly known as Gracilaria chilensis), a species considered as economically important in Chile. Monoclonal and polyclonals (4 and 8...
Article
Resumen ejecutivo Los ecosistemas marinos y su biodiversidad asociada proporcionan una amplia variedad de bienes y servicios ecosistémicos. Una proporción importante de la población mundial vive y depende de las zonas costeras y sus recursos; por lo tanto, la pérdida de servicios ecosistémicos puede traer importantes consecuencias para el bienestar...
Chapter
Full-text available
Aquaculture and fisheries relation to biodiversity in a Climate Change scenario in the coast of Chile
Article
The science of seaweeds (i.e., phycology, the study of algae including macroalgae) is many centuries old. Indeed, some of the earliest taxonomic names using the binomial system, as applied by Linnaeus to any living thing were given to common seaweeds (i.e., Fucus). The taxonomic work was soon followed by studies on their biology (structure and repr...
Article
The holobiont concept recognizes that macroalgae functioning, in an ecological setting, cannot be understood without considering interactions with their associated microbiome. In this study, the structure of bacterial communities on the giant kelp Macrocystis pyrifera from two different genetic populations was analyzed in localities with contrastin...
Article
Full-text available
Pterocladiella capillacea has been economically exploited for agar extraction in the Azores for many years. Harvesting dropped to a full stop in the early 1990s due to a population collapse, but restarted in 2013. Since then it has been intensively harvested and overexploitation must be prevented, with both sustainable harvesting and effective cult...
Article
Understanding how climate change may influence ecosystems depends substantially on its effects on foundation species, such as the ecologically important giant kelp (Macrocystis pyrifera). Despite its broad distribution along strong temperature and pH gradients and strong barriers to dispersal, the potential for local adaptation to climate change va...
Article
The interest in seaweeds by humans seems to have originated over 1700 years ago when several seaweed species became used in ethnic cuisines. These initial applications enabled the start of farming in Japan, China and Korea. However, in Western countries, demand for seaweed polysaccharides began only after World War II, when the demand for agar, alg...
Article
Full-text available
During the domestication process, farmers influence the reproduction and care of organisms to ensure a predictable supply of the resource of interest, causing changes in phenotypic and genotypic character frequencies. In Chile, as a result of unconscious selection and domestication process, farmed populations of the red alga Agarophyton chilensis h...
Article
Full-text available
In coastal waters around the world, the dominant primary producers are benthic macrophytes, including seagrasses and macroalgae, that provide habitat structure and food for diverse and abundant biological communities and drive ecosystem processes. Seagrass meadows and macroalgal forests play key roles for coastal societies, contributing to fishery...
Article
Bio‐oil can be effectively used for the preparation of bio‐based materials due to their chemical compositions. Herein macroalgal derived bio‐oil was used for the synthesis of carbon dots by simple hydrothermal process. A simple and facile hydrothermal process was explored for the preparation of green emitting graphene oxide‐carbon dots (GO‐CDs) com...
Conference Paper
Full-text available
Common in warm and cold temperate waters around Europe the cosmopolitan Halopteris scoparia (Linnaeus) Sauvageau is present in a broad temperature range, being harvested for commercial purpose in some locations. Several studies reported the importance of this species to the nutraceutical and cosmetics industries. The impact of its overexploitation...
Article
Chile, located in the southeastern Pacific, possess a high richness of seaweed species, some of which have been traditionally extracted from natural beds for the production of hydrocolloids (e.g. agar, carrageenan and alginates), but still a high proportion of the biomass is being exported as dried material to processors in Asia and Europe. During...
Article
The demand for seaweed biomass for hydrocolloid industries and novel products for the food, pharmaceutical, cosmetics and agro-industry has been steadily increasing during the last decade. This trend is expected to continue into the future as new uses are discover and the ever-increasing human population needs for healthy products and clean energy...
Article
Full-text available
In terrestrial plants, it is well known that genetic diversity can affect responses to abiotic and biotic stress and have important consequences on farming. However, very little is known about the interactive effects of genetic and environmental factors on seaweed crops. We conducted a field experiment on Gracilaria chilensis to determine the effec...
Article
Full-text available
Global seafood provides almost 20% of all animal protein in diets, and aquaculture is, despite weakening trends, the fastest growing food sector worldwide. Recent increases in production have largely been achieved through intensification of existing farming systems, resulting in higher risks of disease outbreaks. This has led to increased use of an...
Article
Full-text available
Abstract Chile is one of the main producers of seaweeds in the world; however, most of the production comes from harvesting natural beds and only 2.4% from cultures, dominated by the agarophyte Gracilaria chilensis. One of the most exploited resources is the giant kelp Macrocystis pyrifera, which is sold fresh for abalone feed and dry for alginate...
Article
Finfish aquaculture is an activity that has experienced an explosive global development, but presents several environmental risks, such as high nitrogen outputs with potential eutrophication consequences. Therefore, the integration of seaweed aquaculture with the aim of decreasing nitrogen emissions associated with intensive salmon farming has been...
Article
The accelerated development of seaweed aquaculture is stimulating research on the genetic drivers of phenotypic diversity of the target species, in order to optimize breeding strategies, to help determine the choice of source populations, and for the selection of traits and varieties that fit with the environmental variability of the production sit...
Article
Full-text available
Antimicrobial usage in aquaculture selects for antimicrobial-resistant microorganisms in the marine environment. The relevance of this selection to terrestrial animal and human health is unclear. Quinolone-resistance genes qnrA, qnrB, and qnrS were chromosomally located in four randomly chosen quinolone-resistant marine bacteria isolated from an aq...
Article
The emergence and dissemination of antimicrobial-resistant bacteria (ARB) is currently seen as one of the major threats to human and animal public health. Veterinary use of antimicrobials in both developing and developed countries is many-fold greater than their use in human medicine and is an important determinant in selection of ARB. In light of...
Article
Full-text available
Macroalgae are photosynthetic, multicellular, sessile eukaryotic organisms that offer diverse habitats for the colonization of epiphytic bacteria, therefore establishing biological interactions of diverse complexity. This review focusses on the interactions between macroalgae and their Epiphytic Bacterial Community (EBC); the main aims are to ascer...