Invasive Aquatic Vegetation in the Sacramento–San Joaquin Delta and Suisun Marsh: The History and Science of Control Efforts and Recommendations for the Path Forward

San Francisco Estuary and Watershed Science, Journal Year: 2023, Volume and Issue: 20(4)

Published: Feb. 3, 2023

Invasive aquatic vegetation (IAV) is a management challenge in the Sacramento–San Joaquin Delta and Suisun Marsh that has commanded major resource investment for 4 decades. We review history supporting science of chemical, biological, mechanical control IAV March, flowing waters outside region. Outside Delta, there significant research on lotic systems, but few studies come from tidal environments, we found no investigations at spatial scale like Delta. The efforts nascent seen marked growth over recent decade. Since 1983, invasive submerged floating species been centralized within California State Parks Division Boating Waterways (CDBW). program relies herbicides, with an annual budget exceeded $12.5 million since 2015. However, results have mixed because applying herbicides effectively system. In parallel, biological agents water hyacinth (Eichhornia crassipes) giant reed (Arundo donax) released not provided appreciable benefit, likely they are suited temperate climate. Over decades, regulatory complexity increased, hampering to innovate alternative methods or respond quickly new invaders. Control common (Phragmites australis), main emergent plants, coordinated under central program, investigate strategies only recently permitted. As result, local published outcomes these species. Based this our science, develop recommendations leadership actions proactively manage IAV.

Language: Английский

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Invasion and ecological impact of the biofouling tube worm Hydroides elegans (Polychaeta: Serpulidae) in Korean coastal waters

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 11

Published: Jan. 7, 2025

Biofouling, the colonization of submerged surfaces by organisms including microorganisms, plants, algae, and animals, involves both natural artificial environments. The serpulid worm Hydroides elegans , known as an invasive species in global port areas, creates extensive aggregations calcareous tubes. In 2019, H. was found attached to research vessel ISABU Korea, a phylogenetic analysis conducted identify determine its genetic characteristics. Following detection, mesocosm experiments with plastic panels (PP, PE, PET, EPS) were undertaken investigate recruitment adaptation processes within new ecosystems. During 12-week experiment, biomass increased on all types, significantly contributing overall accumulation. This has replaced previously prevalent native ezoensis achieving dominance over other taxonomic groups biomass. These findings demonstrate significant ecological disruptions caused non-indigenous introduced through maritime activities, highlighting urgent need for enhanced preventative monitoring strategies

Language: Английский

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What makes a competent aquatic invader? Considering saline niches of invertebrates and ray-finned fishes

Journal of Experimental Biology, Journal Year: 2025, Volume and Issue: 228(4)

Published: Feb. 26, 2025

ABSTRACT Aquatic invasive species are of growing concern globally, especially in fresh water. The problem is intensified by climate change, which often causes salinization coastal waters. Animals deal with salinity through the function osmoregulation, and osmoregulatory ability can be informative when considering potential. A said to ‘euryhaline’ if it tolerate a wide range salinities, either osmoregulation (tightly controlling its extracellular fluid osmolality) or osmoconformation (matching osmotic concentration internal fluids that environment). Euryhaline animals display large fundamental saline niche (FSN); i.e. physiological tolerance change. However, salinities habitats where actually occurs define realized (RSN). Importantly, aquatic living stable (i.e. those little variation salinity) will have small RSN, but may FSNs, depending on their evolutionary history. Species FSNs more likely successful invaders new different salinities. Here, I propose term ‘osmotic comfort’ as concept associated FSN. core FSN corresponds ∼100% comfort, ‘optimum salinity’, putatively meaning minimum stress. Physiological markers comfort provide raw data for mechanistic modelling habitats. larger remain ‘osmotically comfortable’ habitat, less suffer local extinction waters, example, undergo salinization.

Language: Английский

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The collective effects of potential drivers on the incidence of non-indigenous species in the Mediterranean: A long-term investigation

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117753 - 117753

Published: March 8, 2025

Non-indigenous species (NIS) pose a significant threat to society and the ecosystem in Mediterranean Sea as well global ecosystems. These are introduced into marine environments through combination of various vectors that likely interconnected. Therefore, this study collectively investigates shipping activities, environmental dynamics, socioeconomic factors causative drivers NIS incidence Sea. For purpose, data sets covering period between 1993 2023 were retrieved from online databases. The model overall largely explained rate (79.3 %) relative contribution selected variables varied 17.1 % 7.6 %, population bulk carrier ships, respectively. Consequently, while some examined more important than others, clearly indicated all these need be considered for efficient management strategies NIS.

Language: Английский

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When overfishing is the sustainable option

Nature Sustainability, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Language: Английский

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