In situ allelopathic expression by the invasive amphibious plant, Ludwigia hexapetala (water primrose) across habitat types, seasons, and salinities

Biological Invasions, Journal Year: 2024, Volume and Issue: 26(11), P. 3811 - 3828

Published: Aug. 17, 2024

Language: Английский

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Functional trait-based potential invasiveness of exotic submerged macrophytes and their effects on sediment bacterial community

Hydrobiologia, Journal Year: 2022, Volume and Issue: 849(13), P. 3061 - 3077

Published: June 9, 2022

Language: Английский

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Is an invasive species a notorious invader or carbon sequencer?

Ecological Genetics and Genomics, Journal Year: 2024, Volume and Issue: 32, P. 100279 - 100279

Published: July 9, 2024

Language: Английский

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Heterogeneous Impact of Water Warming on Exotic and Native Submerged and Emergent Plants in Outdoor Mesocosms

Plants, Journal Year: 2021, Volume and Issue: 10(7), P. 1324 - 1324

Published: June 29, 2021

Some aquatic plants present high biomass production with serious consequences on ecosystem functioning. Such mass development can be favored by environmental factors. Temperature increases are expected to modify individual species responses that could shape future communities. We explored the impact of rising water temperature growth, phenology, and metabolism six macrophytes belonging two biogeographic origins (exotic, native) growth forms (submerged, emergent). From June October, they were exposed ambient temperatures a 3 °C warming in outdoor mesocosms. Percent cover canopy height warmer for exotic emergent Ludwigia hexapetala. Warming did not total final any but led decrease soluble sugars all, possibly indicating changes carbon allocation. Three presented lower flavonol anthocyanin contents under increased temperatures, suggesting investment defense mechanisms mitigation stress generated autumn temperatures. Finally, extended shortened flowering period L. hexapetala Myosotis scorpioides, respectively. The conditions heterogeneous varied depending origin or form. Results suggest climate favor invasiveness structure composition

Language: Английский

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A prioritization protocol for coastal wetland restoration on Molokaʻi, Hawaiʻi

Frontiers in Environmental Science, Journal Year: 2023, Volume and Issue: 11

Published: July 11, 2023

Hawaiian coastal wetlands provide important habitat for federally endangered waterbirds and socio-cultural resources Native Hawaiians. Currently, are degraded by development, sedimentation, invasive species and, thus, require restoration. Little is known about their original structure function due to the large-scale alteration of lowland landscape since European contact. Here, we used 1) rapid field assessments hydrology, vegetation, soils, birds, 2) a comprehensive analysis bird value, 3) site spatial characteristics, 4) sea-level rise projections 2050 2100 wetland migration potential, 5) preferences community in GIS suitability prioritize restoration on island Molokaʻi. The first, our knowledge, incorporate preferences, criteria waterbirds, into prioritizing sites showed that groundwater ubiquitous water source wetlands. A groundwater-fed, freshwater herbaceous peatland or “coastal fen” not previously described Hawaiʻi was found adjacent coastline at being grow taro, staple crop In traditional ecological such agro-ecological system referred as loʻipūnāwai (spring pond). Overall, 39 plant were 12 sites; 26 these 11 native. Soil texture ranged from loamy sands silt silty clays mean % organic carbon content 10.93% ± 12.24 (sd). total, 79 13 coots (‘alae keʻokeʻo; Fulica alai ) 66 stilts (aeʻo; Himantopus mexicanus knudseni ), counted during assessments. consistently ranked three highest, Kaupapaloʻi o Kaʻamola, Kakahaiʻa National Wildlife Refuge, ʻŌhiʻapilo Pond, under different weighting approaches. Site prioritization represents both an actionable plan alternative protocol decision-making places where no pristine “reference” exist comparison.

Language: Английский

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Wind Exposure Regulates Water Oxygenation in Densely Vegetated Shallow Lakes

Plants, Journal Year: 2021, Volume and Issue: 10(7), P. 1269 - 1269

Published: June 22, 2021

The presence of dense macrophyte canopies in shallow lakes locally generates thermal stratification and the buildup labile organic matter, which turn stimulate biological oxygen demand. occurrence hypoxic conditions may, however, be buffered by strong wind episodes, favor water mixing reoxygenation. present study aims at explicitly linking action oxygenation within hydrophytes stands lakes. For this purpose, seasonal 24 h-cycle campaigns were carried out for dissolved gases inorganic compounds measurements vegetated an oligo-mesotrophic lake. Further, a eutrophic lake, wind-sheltered -exposed sites. Overall results showed that (DO) daily patterns greatly affected degree exposure. frequent episodes favored near-bottom mixing, likely facilitated mechanical supply from atmosphere or pelagic zone, even during maximum standing crop plants (i.e., summer autumn). A simple model exposure (Keddy Index) allowed us to produce output management map, geographically identified sites as most subjected critical periods hypoxia.

Language: Английский

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Net photosynthetic rates of Egeria najas and Utricularia breviscapa changes directed by seasonal hydrological variations

Revista Brasileira de Botânica, Journal Year: 2022, Volume and Issue: 45(3), P. 1129 - 1138

Published: Aug. 18, 2022

Language: Английский

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Managed Wetlands for Climate Action: Potential Greenhouse Gas and Subsidence Mitigation in the Sacramento–San Joaquin Delta

San Francisco Estuary and Watershed Science, Journal Year: 2024, Volume and Issue: 22(2)

Published: June 11, 2024

In the Sacramento–San Joaquin Delta (Delta), widespread drainage of historical wetlands has led to extensive subsidence and peat carbon losses, as well high ongoing greenhouse gas (GHG) emissions. Large-scale wetland restoration conversion rice fields potential mitigate these effects while conferring flood protection creating habitat for species. To explore scale benefits, this study evaluated seven Delta-wide land-use scenarios on stocks, land-surface elevation, GHG emissions, habitat. Peat mapping data from cores indicate that soil stocks have decreased between early 1800s 2010s 288 ± 15 145 14 million metric tons (megatonnes; Mt) (C). If existing land uses continue, could lose an additional 8.3 Mt C during coming 40 years, equal average emissions 1.2 CO2 equivalents (CO2e) yr-1. Future rice-farming theoretically halt converting a large source weak net or sink. Across three future based targets, creation reduced by 0.39 0.67 CO2e yr-1, with per-area benefits 16 28 (tonnes; t) per hectare (ha) Differences among in extents types influenced their relative different management goals. Tidal enhanced offered agricultural income, but mitigation compared peat-building wetlands. This highlights importance clear objectives when developing plans. A strategic land-management portfolio includes both impounded tidal be designed provide offering diverse suite ecosystems people.

Language: Английский

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Genetic diversity of Egeria densa Planch. (Hydrocharitaceae) in Brazilian reservoirs

Aquatic Ecology, Journal Year: 2024, Volume and Issue: 58(3), P. 707 - 716

Published: April 24, 2024

Language: Английский

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Hydrology and invasive macrophytes may mediate freshwater mussel density and population size structure in a hydropeaking reservoir

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 851, P. 158124 - 158124

Published: Aug. 19, 2022

Language: Английский

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