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Dive into the research topics where Iván A. Hinojosa is active.

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Featured researches published by Iván A. Hinojosa.


Ecology | 2017

Habitat coupling writ large: pelagic‐derived materials fuel benthivorous macroalgal reef fishes in an upwelling zone

Felipe Docmac; Miguel Araya; Iván A. Hinojosa; Cristina Dorador; Chris Harrod

Coastal marine upwelling famously supports elevated levels of pelagic biological production, but can also subsidize production in inshore habitats via pelagic-benthic coupling. Consumers inhabiting macroalgae-dominated rocky reef habitats are often considered to be members of a food web fuelled by energy derived from benthic primary production; conversely, they may also be subsidized by materials transported from pelagic habitats. Here, we used stable isotopes (δ13 C, δ15 N) to examine the relative contribution of pelagic and benthic materials to an ecologically and economically important benthivorous fish assemblage inhabiting subtidal macroalgae-dominated reefs along ~1,000xa0km of the northern Chilean coast where coastal upwelling is active. Fish were isotopically most similar to the pelagic pathway and Bayesian mixing models indicated that production of benthivorous fish was dominated (median 98%, range 69-99%) by pelagic-derived C and N. Although the mechanism by which these materials enter the benthic food web remains unknown, our results clearly highlight the importance of pelagic-benthic coupling in the region. The scale of this subsidy has substantial implications for our basic understanding of ecosystem functioning and the management of nearshore habitats in northern Chile and other upwelling zones worldwide.


Marine Pollution Bulletin | 2018

Spatio-temporal variation of anthropogenic marine debris on Chilean beaches

Valeria Hidalgo-Ruz; Daniela Honorato-Zimmer; Magdalena Gatta-Rosemary; Paloma Núñez; Iván A. Hinojosa; Martin Thiel

We examined the hypothesis that in an emerging economy such as Chile the abundances of Anthropogenic Marine Debris (AMD) on beaches are increasing over time. The citizen science program Científicos de la Basura (Litter Scientists) conducted three national surveys (2008, 2012 and 2016) to determine AMD composition, abundance, spatial patterns and temporal trends. AMD was found on all beaches along the entire Chilean coast. Highest percentages of AMD in all surveys were plastics and cigarette butts, which can be attributed to local sources (i.e. beach users). The Antofagasta region in northern Chile had the highest abundance of AMD compared with all other zones. Higher abundances of AMD were found at the upper stations from almost all zones. No significant tendency of increasing or decreasing AMD densities was observed during the 8years covered by our study, which suggests that economic development alone cannot explain temporal trends in AMD densities.


Frontiers in Marine Science | 2018

Impacts of Marine Plastic Pollution From Continental Coasts to Subtropical Gyres—Fish, Seabirds, and Other Vertebrates in the SE Pacific

Martin Thiel; Guillermo Luna-Jorquera; Rocío Álvarez-Varas; Camila Gallardo; Iván A. Hinojosa; Nicolas Luna; Diego Miranda-Urbina; Naiti Morales; Nicolas C. Ory; Aldo S. Pacheco; Matías Portflitt-Toro; Carlos Zavalaga

Anthropogenic Marine Debris (AMD) in the SE Pacific has primarily local origins from land-based sources, including cities (coastal and inland), beach-goers, aquaculture, and fisheries. The low frequency of AMD colonized by oceanic biota (bryozoans, lepadid barnacles) suggests that most litter items from coastal waters of the Humboldt Current System (HCS) are pulled offshore into the South Pacific Subtropical Gyre (SPSG). The highest densities of floating micro- and macroplastics are reported from the SPSG. An extensive survey of photographic records, unpublished data, conference proceedings, and published studies revealed interactions with plastics for 97 species in the SE Pacific, including 20 species of fish, 5 sea turtles, 53 seabirds, and 19 marine mammals. Sea turtles are most affected by interactions with plastics, underlined by the fact that 4 of the 5 species suffer both from entanglement and ingestion. Reports gathered in this review suggest that interactions along the continental coast are mostly via entanglement. High frequencies of microplastic ingestion have been reported from planktivorous fish and seabirds inhabiting the oceanic waters and islands exposed to high densities of microplastics concentrated by oceanic currents in the SPSG. Our review also suggests that some species from the highly productive HCS face the risk of negative interactions with AMD, because food and plastic litter are concentrated in coastal front systems. In order to improve the conservation of marine vertebrates, especially of sea turtles, urgent measures of plastic reduction are needed.


Revista de Gestão Costeira Integrada - Journal of Integrated Coastal Zone Management | 2011

Anthropogenic litter in the SE Pacific: an overview of the problem and possible solutions

Martin Thiel; Macarena Bravo; Iván A. Hinojosa; Guillermo Luna; Leonardo Miranda; Paloma Núñez; Aldo S. Pacheco; N. Vásquez


Ciencia y Tecnología del Mar | 2010

MACROALGAS FLOTANTES EN EL MAR INTERIOR DE CHILOÉ, CHILE Y SU FAUNA ASOCIADA CON ÉNFASIS EN PERACARIDA Y ESTADOS TEMPRANO DE DESARROLLO DE DECAPODA (CRUSTACEA)

Iván A. Hinojosa; Exequiel R. González; Erasmo C. Macaya; Martin Thiel


EPIC3Revista chilena de historia natural, 79, pp. 13-27 | 2006

Zoogeography of four pelagic barnacles along the SE-Pacific coast of Chile

Iván A. Hinojosa; S. Boltana; Domingo Lancellotti; Erasmo C. Macaya; Pabla Ugalde; Nelson Valdivia; N. Vásquez; William A. Newman; Martin Thiel


Bulletin of Marine Science | 2018

Coastal chemical cues for settlement of the southern rock lobster, Jasus edwardsii

Iván A. Hinojosa; C Gardner; Bridget S. Green; Andrew G. Jeffs


Archive | 2010

MACROALGAS FLOTANTES EN EL MAR INTERIOR DE CHILOÉ, CHILE Y SU FAUNA ASOCIADA CON ÉNFASIS EN PERACARIDA Y ESTADOS TEMPRANO DE DESARROLLO DE DECAPODA (CRUSTACEA)* FLOATING ALGAE IN THE INTERIOR SEA OF CHILOÉ, CHILE AND THEIR ASSOCIATED FAUNA WITH EMPHASIS ON PERACARIDA AND EARLY DEVELOPMENTAL STATES OF DECAPODA (CRUSTACEA).

Iván A. Hinojosa; Exequiel R. González; Erasmo C. Macaya; Martin Thiel; Andrés Bello


Archive | 2007

DISTRIBUCIÓN Y ABUNDANCIA DE MACROALGAS FLOTANDO A LA DERIVA Y SU FAUNA PERACARIDA ASOCIADA EN LOS CANALES DE LA XI REGIÓN, CHILE* DISTRIBUTION AND ABUNDANCE OF FLOATING SEAWEEDS AND THEIR ASSOCIATED PERACARID FAUNA IN THE FJORDS AND CHANNELS OF THE XI. REGION, CHILE

Iván A. Hinojosa; Exequiel R. González; Pabla Ugalde; Nelson Valdivia; Erasmo C. Macaya; Martin Thiel


Archive | 2007

ESTADOS TEMPRANOS DE DESARROLLO DE CRUSTÁCEOS DECÁPO- DOS ASOCIADOS A MACROALGAS FLOTANDO A LA DERIVA EN FIORDOS Y CANALES DEL SUR DE CHILE* EARLY DEVELOPMENTAL STAGES OF CRUSTACEAN DECAPODS ASSOCIATED WITH FLOATING SEAWEED IN FIORD AND CHANNELS FROM SOUTHERN CHILE

Iván A. Hinojosa; S. Boltana; Exequiel R. González; Erasmo C. Macaya; Martin Thiel; Pabla Ugalde; Nelson Valdivia

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Martin Thiel

Catholic University of the North

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Nelson Valdivia

Austral University of Chile

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Martin Thiel

Catholic University of the North

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William A. Newman

Scripps Institution of Oceanography

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Aldo S. Pacheco

University of Antofagasta

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Chris Harrod

University of Antofagasta

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Felipe Docmac

University of Antofagasta

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Guillermo Luna-Jorquera

Catholic University of the North

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