Resumen.-En los últimos 50 años, el rol trófico de consumidores se convirtió en un tópico importante la ecología costas rocosas Chile, centrándose especies equinodermos, crustáceos y moluscos tipificadas como herbívoros carnívoros principales del sistema intermareal.Sin embargo, dieta comportamiento muchos aún no son bien conocidos, dificultando abordar problemas clave relativos por ejemplo a importancia omnivoría, competencia intra-e inter-específica o especialización individual.Intentando...

Abstract Top-down and bottom-up forces determine ecosystem function dynamics. Fisheries as a top-down force can shorten destabilize food webs, while effects driven by climate change alter the of primary productivity. We assessed response highly-resolved intertidal web to these two global drivers, using network analysis bioenergetic modelling. quantified relative importance artisanal fisheries another predator species, evaluated independent combined changes in plankton productivity on The was...

Abstract Earth's biosphere is undergoing drastic reorganization due to the sixth mass extinction brought on by Anthropocene. Impacts of local and regional extirpation species have been demonstrated propagate through complex interaction networks they are part of, leading secondary extinctions exacerbating biodiversity loss. Contemporary ecological theory has developed several measures analyse structure robustness under However, a toolbox for directly simulating quantifying cascades creating...

Species diversity underpins all ecosystem services that support life. Despite this recognition and the great advances in detecting biodiversity, exactly how many which species co-occur interact, directly or indirectly any is unknown. Biodiversity accounts are incomplete; taxonomically, size, habitat, mobility rarity biased. In ocean, provisioning of fish, invertebrates algae a fundamental service. This extracted biomass depends on myriad microscopic macroscopic organisms make up fabric...

The European rabbit (Oryctolagus cuniculus) is one of the main invasive species in Chile, where it became naturalized ca. 150 years ago. Their high reproductive capacity, lack specialist predators, and great adaptability favored settlement rabbits diverse mainland island ecosystems country. Recently, have become central players semi-arid ecosystems, such as those represented Las Chinchillas National Reserve north-central Chile. We undertook to analyze place role food web that Reserve, based...

ABSTRACT Stochastic cellular automata (SCA) are models that describe spatial dynamics using a grid of cells switch between discrete states over time. They widely used to understand how small-scale processes scale up affect ecological at larger scales, and have been applied wide diversity theoretical problems in all systems, such as arid ecosystems, coral reefs, forests, bacteria, or urban growth. Despite their applications, SCA implementations often ad-hoc, lacking performance, guarantees...

While restauranteurs are important actors in seafood systems, information on their decisions and views sustainability is lacking. Using mixed methods, we explored Chilean restauranters’ contexts, decisions, sustainability. Menus Chile diverse dominated by domestic wild-caught sources. Restauranters willing to participate traceability programs, especially when it for both health safety reasons. believe that an elite resource high prices inhibiting access. They also patrons care little about...

The European rabbit has invaded numerous ecosystems worldwide, but rarely steppes. Since its various introduction attempts into the of Magallanes/Fuegian region, become a key player, interacting with species at different trophic levels and generating impacts on ecosystems. To better understand role in steppe scrub ecosystems, we characterised food web region to identity their species, mechanisms complexities interactions demonstrate that management may more complex than just controlling...

Stochastic cellular automata (SCA) are models that describe spatial dynamics using a grid of cells switch between discrete states over time. They widely used to understand how small-scale processes scale up affect ecological at larger scales, and have been applied wide diversity theoretical problems in all systems, such as arid ecosystems, coral reefs, forests, bacteria, or urban growth. Despite their applications, SCA implementations often ad-hoc, lacking performance, guarantees correctness...

ABSTRACT Top-down and bottom-up forces determine ecosystem function dynamics. Fisheries as a top-down force can shorten destabilize food-webs, while climate-change driven effects alter the of primary productivity. We assessed response highly-resolved intertidal food-web to these two global-change drivers, using network analysis bioenergetic modelling. quantified relative importance artisanal fisheries another predator species, evaluated independent combined plankton-productivity changes on...

A recent theme issue of *Phil Trans B* addressed the multifaceted problems tracking biodiversity change to meet emerging international development goals, national economic accounting, and diverse community interests. The results place science in context policy needs, provide an updated roadmap for how acquire, process, use observation data a changing world. In this seminar, several authors will speak about their work. Theory application improved species richness estimator Species is...

Abstract The European rabbit has invaded numerous ecosystems around the world, but rarely steppes. We studied food web in Magallanes region of southernmost Chile, where is now a key player, interacting with species at different trophic levels. Because currently well embedded Magellanic/Fuegian ecosystem, especially steppe, any changes its local abundance can spread out through interactions and generate unwanted impacts regional web. used multi-species network approach built steppe based on...

Abstract Earth’s biosphere is currently undergoing drastic reorganisation as a consequence of the sixth mass extinction brought on by Anthropocene. Impacts local and regional extirpation species have been demonstrated to propagate through complex interaction networks they are part of, subsequently leading secondary extinctions, exacerbating biodiversity loss. Contemporary ecological theory has developed several measures analyse structure robustness under However, toolbox for direct...