Macrophytes in Inland Waters: From Knowledge to Management

Troìa, Angelo

doi:10.3390/plants12030582

Cited by 2 publications

(2 citation statements)

References 14 publications

(15 reference statements)

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“…In spite of their crucial role in aquatic ecosystems and their strong positive impacts on their environment [10,29,30,34], information on stonewort occurrence, distribution, and ecological requirements is still insufficient, especially in the Mediterranean area [1,35]. In fact, in this unique biodiversity hot spot, efforts to study the diversity and distribution of stoneworts have been limited to small geographical areas and focused mainly on freshwater lakes [1,7,36] and wetlands [1,37], with recent attempts at investigating the role of manmade habitats such as farm ponds [23] in creating refugia for these species.…”

Section: Introductionmentioning

confidence: 99%

“…Remarkably, the typical habitat dominated by charophytes in inland waters, included in the Habitats Directive 92/43/EEC [11] with code 3140-Hard oligo-mesotrophic waters with benthic vegetation of Chara spp., is only occasionally reported [22], with large areas such as the entire Campania region (13,671 km 2 ) having a single known station (Natura 2000 site code IT8040007). In this context any information, e.g., the description of novel populations or the revision of species distributions, is valuable for shedding light on the ecology and biogeography of charophytes [35], especially in areas where even historical records are scarce, such as most of southern Italy.…”

Section: Introductionmentioning

confidence: 99%

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Biodiversity, Ecology and Distribution of Mediterranean Charophytes in Southern Italy

Bellino,

Baldantoni

2023

Plants

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Charophytes are amongst the most endangered primary producers in freshwater and coastal ecosystems. In spite of the extensive research on the group and its ecological and conservational relevance, scarce information is available on Mediterranean environments, especially rivers and small water reservoirs, where charophytes face challenging summer droughts and changes in hydrological regimes, as well as pervasive anthropogenic pressures. This research aimed, through repeated field observations, detailed analyses of population traits, and extensive characterization of the colonized environments, to foster an understanding of the distribution, biodiversity, and ecology of charophytes in an area of exceptional environmental value and that is still uninvestigated in relation to its charophyte flora, the southern Campania region (Italy). Overall, 17 populations were discovered, belonging to 4 taxa of the Chara genus: C. globularis, C. gymnophylla, C. vulgaris, and C. vulgaris var. papillata, reduced to 12 populations and to the first 3 taxa by the end of the study. The species occupied different ecological niches and colonized environments such as rivers and small ponds, with environment-dependent morphotypes. The occurrence of few taxa with a wide distribution, often forming ephemeral populations, suggests ongoing constraints on charophyte biodiversity in the area, favoring opportunistic species that are able to benefit from temporary refugia.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biodiversity, Ecology and Distribution of Mediterranean Charophytes in Southern Italy

Bellino,

Baldantoni

2023

Plants

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Germination Requirement and Suitable Storage Method of Hydrocharis dubia Seeds

Zhao,

Jiang,

Liu

et al. 2024

Biology

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Understanding of seed germination requirements and storage methods is very important to successfully conserve and restore aquatic vegetation. The main question addressed by the research was germination requirements and suitable seed storage methods of Hydrocharis dubia seeds. Furthermore, the water content and respiration rate of H. dubia seeds were studied under different storage conditions. The study found that light and high seed clustering density had a positive effect on germination, while burial had a negative effect. Germination percentages were 60.67 ± 6.11% and 28.40 ± 6.79% in light and dark conditions, respectively. Under clustering densities of 1 and 50, germination percentages were 6.00 ± 2.00% and 59.33 ± 0.67%, respectively. Germination percentages were 50.40 ± 5.00%, 3.20 ± 3.20%, and 0.80 ± 0.80% at depths of 0, 2, and 3 cm, respectively. Oxygen, water level, and substratum had no significant effect on seed germination. Storage method had a significant effect on seed germination, moisture content, and respiration rate. The germination percentages were 64.00 ± 1.67%, 85.20 ± 5.04%, and 92.80 ± 4.27% under the storage conditions of 4 °C-Dry, 4 °C-Wet, and Ambient water temperature-Wet for 2 years, respectively. The seeds had no germination under the storage conditions of Ambient air temperature-Wet and Ambient air temperature-Dry. Overall, the study indicates that seed germination of H. dubia is restricted by light, burial depth, and seed clustering density. Additionally, it was found that H. dubia seeds can be stored in wet environmental conditions at ambient water temperature, similar to seed banks. Specifically, the seeds can be stored in sand and submerged underwater at ambient water temperatures ranging from 4 °C to 25 °C. This study will help with the conservation and restoration of aquatic plants, such as H. dubia.

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Macrophytes in Inland Waters: From Knowledge to Management

Cited by 2 publications

References 14 publications

Biodiversity, Ecology and Distribution of Mediterranean Charophytes in Southern Italy

Biodiversity, Ecology and Distribution of Mediterranean Charophytes in Southern Italy

Germination Requirement and Suitable Storage Method of Hydrocharis dubia Seeds

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