scholarly journals Sustainability of bait fishing harvesting in estuarine ecosystems – Case study in the Local Natural Reserve of Douro Estuary, Portugal

2013 ◽  
Vol 13 (2) ◽  
pp. 157-168 ◽  
Author(s):  
André Neves de Carvalho ◽  
Ana Sofia Lino Vaz ◽  
Tânia Isabel Boto Sérgio ◽  
Paulo José Talhadas dos Santos
Keyword(s):  
Estuarine Ecosystems ◽  
Natural Reserve

scholarly journals Robust Pre-Processing Module for Leaf Image Analysis

2020 ◽  
Vol 9 (4) ◽  
pp. 2083-2087
Keyword(s):  
Vital Role ◽  
Digital Database ◽  
Natural Reserve ◽  
Adaptive Enhancement ◽  
Plant Recognition ◽  
Enhancement Method ◽  
Processing Module ◽  
Exposed Part ◽  
Plant Maturity

Flora on earth is natural reserve for medicines. It has great healing power if encashed and conserved with great faith and devotion. Knowledge about flora empowers the methods for nurturing the medicines. Digital database creation, automation of plant recognition and identification of plant maturity can play a vital role in medicine extraction. The system for automation of process should be robust to handle on-site data so as to make the process less destructive. Pre-processing algorithms can equip the system with accuracy and robustness. The paper proposes the algorithms used for pre-processing the raw image which would aid the feature extraction and classification methods. Adaptive enhancement method for non-uniform illumination equalizes the underexposed and over exposed part in an image. Also methods like deblurring, orientation correction, size normalization in prescribed sequence improves the image quality for the later stages. The case study undertaken considers 38000 images and accuracy achived is of about 98%.

scholarly journals A fine-grained bird Atlas as tool for spatial monitoring: a case study from a remnant wetland during the breeding period (Torre Flavia, central Italy)

2020 ◽  
Vol 90 (1) ◽  
Author(s):  
Corrado Battisti ◽  
Giuseppe Dodaro ◽  
Mario Vannuccini
Keyword(s):  
Management Strategies ◽  
Central Italy ◽  
Breeding Period ◽  
Fine Grained ◽  
Acrocephalus Scirpaceus ◽  
Natural Reserve ◽  
Fulica Atra ◽  
Protection Area ◽  
Water Level Management

During the 2019 breeding period we carried out a bird atlas for a small coastal natural reserve (Torre Flavia wetland, Special Protection Area IT6030020, central Italy), comparing quantitative data of spatial occurrences with records from an analogous study carried out in 2005. From 2005 to 2019 some water-related species increased their frequency of occurrence (Fulica atra, significantly). Among the reed and rush-bed species, Acrocephalus scirpaceus spatially increased and Cisticola juncidis decreased significantly. Among ecotonal, synanthropic and open habitat species, we registered a significant increase of Chloris chloris. A decreasing trend of Passer italiae, Saxicola torquatus, Emberiza calandra, although not significant, may be probably linked to regional or continental factors. Both causes at local (reedbed expansion, rushbed reduction, water-level management) and at larger scale (decline in their continental range) can explain the observed changes in spatial occurrences during this medium-long temporal range. Local atlases can be quick tools useful to drive management strategies in remnant wetlands.

Sign in / Sign up

Export Citation Format

Share Document