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Marine mammals are considered sentinel species and may act as indicators of ocean health. Plastic residues are widely distributed in the oceans and are recognised as hazardous contaminants, and once ingested can cause several adverse effects on wildlife. This study aimed to identify and characterise plastic ingestion in the Guiana dolphins (Sotalia guianensis) from the Southwestern Tropical Atlantic by evaluating the stomach contents of stranded individuals through KOH digestion and identification of subsample of particles by LDIR Chemical Imaging System. Most of the individuals were contaminated, and the most common polymers identified were PU, PET and EVA. Microplastics were more prevalent than larger plastic particles (meso- and macroplastics). Smaller particles were detected during the rainy seasons. Moreover, there was a positive correlation between the stomach content mass and the number of microplastics, suggesting contamination through trophic transfer.
Elsevier
2023
2016
A review committee was established to examine the Phase II ExSIRA Part A project proposal. The committee consisted of 3 experts in the field. Each expert carefully reviewed background material (including Phase I reports) and the Part A project description; based on this work, each expert wrote an individual review. These individual reviews were used to create a consensus review for the committee in which this report is based upon.
The consensus review states that the project description as proposed is feasible and that the project team is competent to perform these investigations. However, one major comment from the committee is the consistent lack of detail regarding the study design and specific methods to be utilized. The committee recommends that this detail be documented at some point before experiments are conducted. The committee also identified a total of 11 specific comments and recommendations throughout the 4 tasks for the project ¿ many of these comments should be addressed before the project is funded.
2010
2006
2012
2023
Human adaptation to climate change is the outcome of long-term decisions continuously made and revised by local communities. Adaptation choices can be represented by economic investment models in which the often large upfront cost of adaptation is offset by the future benefits of avoiding losses due to future natural hazards. In this context, we investigate the role that expectations of future natural hazards have on adaptation in the Colorado River basin of the USA. We apply an innovative approach that quantifies the impacts of changes in concurrent climate extremes, with a focus on flooding events. By including the expectation of future natural hazards in adaptation models, we examine how public policies can focus on this component to support local community adaptation efforts. Findings indicate that considering the concurrent distribution of several variables makes quantification and prediction of extremes easier, more realistic, and consequently improves our capability to model human systems adaptation. Hazard expectation is a leading force in adaptation. Even without assuming increases in exposure, the Colorado River basin is expected to face harsh increases in damage from flooding events unless local communities are able to incorporate climate change and expected increases in extremes in their adaptation planning and decision making.
MDPI
2022
2003
2003
2025
Evoluzione della contaminazione da composti organici semivolatili (SVOC) in campioni di neve fresca. NILU F
2004
2004
2009
2010