Publications by authors named "J I Iriarte"
Article Synopsis
- - The study focuses on the Magellan Subantarctic ecoregion, highlighting how accelerated glacial ice melt creates unique environmental conditions that impact marine biodiversity and epiphytic microalgal communities.
- - Researchers analyzed epiphytic microalgal assemblages on various benthic macroalgae across sites with different glacial and oceanic influences, documenting 67 genera and noting significant variations in diversity based on environmental factors.
- - Findings revealed that environmental gradients, particularly from glacial influence, are the primary drivers of epiphytic variation, with some potentially harmful microalgae identified, contributing to a better understanding of this complex ecosystem in light of climate change.
Article Synopsis
- Climate change is decreasing river runoff in Northwestern Patagonia (NWP), affecting coastal ecosystems over the past few decades.
- Significant drops in streamflow were noted, especially in northern river basins, with changes in flow patterns moving south toward rivers with snowmelt influence.
- The reduced freshwater input is leading to warmer surface temperatures and shallower haloclines in the inner sea, indicating a need for improved monitoring and management strategies to adapt to these environmental shifts.
Microbes in marine ecosystems have evolved their gene content to thrive successfully in the cold. Although this process has been reasonably well studied in bacteria and selected eukaryotes, less is known about the impact of cold environments on the genomes of viruses that infect eukaryotes. Here, we analyzed cold adaptations in giant viruses (Nucleocytoviricota and Mirusviricota) from austral marine environments and compared them with their Arctic and temperate counterparts.
View Article and Find Full Text PDFThe Chilean Patagonian fjords are globally renowned as one of the few remaining pristine environments on Earth; however, their ecosystems are under significant threat from climatic and anthropogenic pressures. Of particular concern is the lack of research into the impact of plastic pollution on the waters and biodiversity of these fjords. In this study, the marine environment of a secluded and sparsely populated fjord system in southern Patagonia was sampled to assess microplastics in seawater, beaches, bottom sediment, and zooplankton.
View Article and Find Full Text PDFIndigenous societies are known to have occupied the Amazon basin for more than 12,000 years, but the scale of their influence on Amazonian forests remains uncertain. We report the discovery, using LIDAR (light detection and ranging) information from across the basin, of 24 previously undetected pre-Columbian earthworks beneath the forest canopy. Modeled distribution and abundance of large-scale archaeological sites across Amazonia suggest that between 10,272 and 23,648 sites remain to be discovered and that most will be found in the southwest.
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