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A coupled 3D hydrodynamic-ecological model was applied to the Santa Marta Coastal Area (SMCA, Colombian Caribbean) to provide insights into the role of external stressors (e.g. wastewater outfall and upwelling) on the water quality and benthic - pelagic coupling. The model was calibrated and validated based on benthic metabolic measurements, satellite-derived chlorophyll-a (Chl-a) and sea surface temperature (SST) maps, field and literature water quality data. The model was able to reproduce the complex dynamics and fast transitions of temperature, nutrients, and phytoplankton, including the stratification and mixing periods during the non-upwelling (NUPW) and upwelling (UPW) seasons. Wide and fast changes in the temperatures and the highly flushed environment prevented excess phytoplankton growth and nutrient accumulation in the benthic and pelagic compartments. The model proved to be a reliable research tool to analyze the interactive effects of upwelling and untreated wastewater on the functioning of a tropical bay.
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http://dx.doi.org/10.1016/j.marpolbul.2021.112771 | DOI Listing |
Nat Commun
September 2025
Ecology, Department of Biology, University of Konstanz, Konstanz, Germany.
Due to anthropogenic pressure some species have declined whereas others have increased within their native ranges. Simultaneously, many species introduced by humans have established self-sustaining populations elsewhere (i.e.
View Article and Find Full Text PDFMar Environ Res
August 2025
Department of Oceanography, Pusan National University, Busan, 46241, South Korea.
The Yellow Sea (YS) and the East China Sea (ECS), which comprise continental shelves with depths of 200 m or less, are recognized as some of the most productive coastal areas globally. Although this high productivity can contribute to carbon sequestration, the spatiotemporal variability of the biological pump remains unclear. To investigate this variability, net community production (NCP) in August 2020 was estimated based on high-resolution O/Ar measurements.
View Article and Find Full Text PDFMar Environ Res
September 2025
CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
Zooplankton are sensitive indicators of environmental changes and crucial components of marine food webs, facilitating energy transfer between primary producers and higher trophic levels. This study used ZooScan image analysis to investigate variations in zooplankton abundance and biovolume in Shandong coastal waters during spring (May 2022), summer (August 2022), and winter (December 2022 and February 2023). Functional indices such as taxonomic diversity, the normalized biomass size spectrum (NBSS), size diversity, and mean body size were calculated to describe the seasonal dynamics of energy transfer efficiency in zooplankton.
View Article and Find Full Text PDFBiology (Basel)
August 2025
Palm Beach Gardens, Palm Beach State College, 395 Mallard Pt., Jupiter, FL 33458, USA.
Gopher tortoises () are threatened burrowing keystone ecosystem engineers indigenous to open uplands in the Southeastern United States. Perils to the species include habitat degradation and fragmentation, anthropogenic disturbances, predation, parasites, and disease. Problems are severe in the SE Florida study area due to coastal urban sprawl, confining the tortoises in small, scattered, unnatural pockets subject to novel stresses.
View Article and Find Full Text PDFFront Public Health
September 2025
Department of Psychology, University of Victoria, Victoria, BC, Canada.
Background: Acquired brain injury (ABI) can significantly impact mental health, vulnerability to addictions, and housing stability, yet the intersection of these challenges is understudied. Individuals living with ABI are disproportionately represented among populations experiencing homelessness and have a high prevalence of concurrent mental health and substance use (MHSU) disorders, leading to poorer health outcomes and lower quality of life. The objective of this study was to identify barriers and facilitators to housing and healthcare services for people experiencing homelessness with ABI and concurrent MHSU disorders.
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