Η πλειονότητα των θαλάσσιων ασπόνδυλων οργανισμών εμφανίζει θετική απόκριση προς τις φωτεινές πηγές κατά τη διάρκεια της νύχτας, ιδιότητα που την ονομάζουμε θετικό φωτοτροπισμό. Μια ομάδα δειγματοληπτών που εκμεταλλεύεται την παραπάνω ιδιότητα (φωτοπαγίδες) έχει αρχίσει να χρησιμοποιείται εκτεταμένα στη θαλάσσια έρευνα τις τελευταίες δεκαετίες με πολύ ενθαρρυντικά αποτελέσματα. Ωστόσο, παρά την πληθώρα πλεονεκτημάτων που εμφανίζουν έναντι των παραδοσιακών μεθόδων συλλογής ασπόνδυλων οργανισμών, σε καμία περίπτωση έως τώρα δεν έχουν χρησιμοποιηθεί στη Μεσόγειο.Στην διπλωματική αυτή εργασία κατασκευάσαμε μία φωτοπαγίδα για τη λειτουργία της οποίας, προγραμματίσαμε τον μικροελεγκτή MSP430F169. Η εργασία αυτή περιλαμβάνει 4 κεφάλαια. Πιο συγκεκριμένα, στο πρώτο κεφάλαιο γίνεται αναφορά στις φωτοπαγίδες που έχουν κατασκευαστεί μέχρι τώρα καθώς και σ την συμπεριφορά των ψαριών απέναντι στο φως. Στο δεύτερο κεφάλαιο, περιγράφεται ο τρόπος λειτουργίας της φωτοπαγίδας. Στο τρίτο κεφάλαιο παρουσιάζονται βασικές έννοιες των μικροελεγκτών και περιγράφεται αναλυτικά ο προγραμματισμός του μικροελεγκτή MSP430F169 τον οποίο και χρησιμοποιήσαμε. Τέλος, δίνεται ο κώδικας του προγράμματος σύμφωνα με το οποίο προγραμματίστηκε ο MSP430F169 εκεί γίνεται και η λεπτομερής επεξήγησή του καθώς και η επεξήγηση του προγράμματος που χρησιμοποιήθηκε για την εφαρμογή του. / The majority of marine invertebrates show a positive response to the light source during the night, a property that we call positive phototropism. A group of samplers exploit the above property (light trap) has been in use extensively in marine research in recent decades with very encouraging results. However, despite the many advantages over traditional display methods for collecting invertebrates in no case has so far not been used in this dissertation Mesogeio. In this thesis we constructed a light trap for the operation of which, we programmed the microcontroller MSP430F169. This work contains 4 chapters. To be more specific, the first chapter refers to the light trap built and the behavior of fish towards the light so far . The second chapter describes how the light trap works. The third chapter presents the basic concepts of microcontrollers and describes the programming of microcontroller MSP430F169 which we used. Finally, the fourth chapter has the program code with which the MSP430F169 planned and there is a detailed code explanation and an explanation of the program which was used for its implementation.

Οι γόνοι, θαλάσσιοι ασπόνδυλοι οργανισμοί, έχουν θετική απόκριση στις φωτεινές πηγές, στη διάρκεια της νύκτας. Στην παρούσα διπλωματική εργασία σχεδιάσαμε και κατασκευάσαμε ένα σύστημα αυτοματοποιημένης λειτουργίας μιας φωτοπαγίδας για την προσέλκυση τέτοιων οργανισμών, με χρήση του μικροελεγκτή STM32F103RBT6. Στην εργασία περιλαμβάνονται 7 κεφάλαια. Πιο συγκεκριμένα στο πρώτο κεφάλαιο γίνεται αναφορά στις φωτοπαγίδες, τη λειτουργία τους, τον τρόπο κατασκευής τους καθώς και στην συμπεριφορά των ψαριών απέναντί τους. Στο δεύτερο κεφάλαιο περιγράφεται η λειτουργία των διόδων και των φωτοδιόδων. Στο τρίτο κεφάλαιο περιγράφεται η λειτουργία των LED καθώς και των LED ισχύος. Στο τέταρτο κεφάλαιο περιγράφεται η λειτουργία των τελεστικών ενισχυτών. Στο πέμπτο κεφάλαιο περιγράφεται η λειτουργία των καρτών SD και ο τρόπος προγραμματισμού τους. Στο έκτο κεφάλαιο περιγράφεται η πλακέτα που χρησιμοποιήθηκε και αναλυτικά ο επεξεργαστής STM32F103RBT6 και τα περιφερειακά του. Τέλος, δίνεται ο κώδικας του προγράμματος με κάποια σχόλια που αναφέρουν λεπτομερώς την λειτουργία του / Fish larvae, are aspondylous and they have a positive phototactic behavior, during the night time. For the current paper, we designed and built an automated system for a lighttrap device , using the microprocessor STM32F103RBT6. In this paper there are 7 chapters. The first chapter refers to lighttraps and their usage , their cnstruction and the way fish larvae respond to them. In the second chapter the operation of the lighttraps is described. In the third chapter, power LEDs and normal LEDs are described. In the fourth chapter, the operation of operational amplifiers is described. In the fifth chapter the operation of the sd cards is described, along with the proper way to program one. In the sixth chapter, the circuit used is described and the microprocessor in detail. Finaly, in the seveth chapter, there are parts of the code and the full operation of the system is descrived in detail.

No description available.

Conselho Nacional de Desenvolvimento Científico e Tecnológico / The proposed work aimed to investigate the entomological aspects in homogeneous stands of Acacia mearnsii (black wattle). It was considered: insects identification and damage quantification on seeds; treatment effect of seeds and the insecticides application on the aerial part of plants of direct sowing; the survey qualiquantitative by light traps mean; the main species of Coleoptera present in the suppressed trees; the attack characterization of Oncideres impluviata and its influence on wood volume of black wattle. The experiments were carried out in cultivated areas of black wattle situated at the municipality of Butiá and Minas do Leão in the carboniferous region of Rio Grande do Sul during March 2004 to July 2006. It was verified that the Stator limbatus (Coleoptera: Chrysomelidae) caused expressive damage to the black wattle seeds. There was no statistical increase in relation to the use of insecticides to the directly sowing, however black wattle plants submitted to thiamethoxam application on the aerial part showed better development. Among the 11 orders collected by light traps the populations of lepidoptera, coleoptera and hemiptera were quantitatively pointed. Sigara sp. (Hemiptera: Corixidae), Conoderus alfredense (Coleoptera: Elateridae) and Plectris crassa (Coleoptera: Scarabaeidae) were the species more frequents, abundant and constants collected by the light traps. At the qualitative survey made in suppressed trees it was observed 40 species of Coleoptera distributed in ten families, focusing in Curculionidae with twelve representatives, Cerambycidae with ten and Scarabaeidae with nine species. It was verified that O. impluviata attacks the high parts of the tree, independent of age, from the borders into the stand and cuts the branches averaging 14mm of diameter and 1.4 m of length. These branches present high contents of nitrogen and phosphorus in their chemical composition when compared to non-cut branches. The attack of O. impluviata did not reduce the wood volume produced for black wattle trees. / O trabalho proposto teve como objetivo o estudo de aspectos entomológicos em povoamentos homogêneos de Acacia mearnsii (acácia-negra), considerando a identificação de insetos e quantificação de seus danos em sementes; o efeito do tratamento de sementes e a aplicação de inseticidas na parte aérea de plantas de semeadura direta; o levantamento quali-quantitativo, por meio de armadilha luminosa; as principais espécies de Coleoptera presentes em sub-bosque; a caracterização do ataque de Oncideres impluviata e a sua influência no volume de madeira de acácia-negra. Os experimentos foram realizados em áreas de plantio e povoamentos de acácia-negra situados nos municípios de Arroio dos Ratos, Butiá e Minas do Leão, na região carbonífera do Rio Grande do Sul, no período de março de 2004 a julho de 2006. Verificou-se que Stator limbatus (Coleoptera: Chrysomelidae) causa expressivos danos a sementes de acácia-negra. Não houve diferença significativa em relação ao uso de inseticidas para a semeadura direta. Das 11 ordens coletadas por meio de armadilha luminosa, destacam-se quantitativamente as populações de lepidópteros, coleópteros e hemípteros. Sigara sp. (Hemiptera: Corixidae), Conoderus alfredense (Coleoptera: Elateridae) e Plectris crassa (Coleoptera: Scarabaeidae) foram as espécies muito freqüentes, muito abundantes e constantes, coletadas através de armadilha luminosa. No levantamento qualitativo realizado em sub-bosques foram observadas 40 espécies de Coleoptera, distribuídas em dez famílias, com destaque para os Curculionidae com doze representantes, Cerambycidae com dez e Scarabaeidae com nove espécies. Constatou-se que O. impluviata ataca nas partes mais altas da árvore, independente da idade, tanto nas bordas como no interior de povoamentos. O. impluviata anela galhos com diâmetros e comprimentos médios de 1,4 cm e 1,4 m, respectivamente. Estes galhos apresentam maiores teores de nitrogênio e fósforo em sua composição química quando comparados com galhos não-anelados. O ataque de O. impluviata não reduziu o volume de madeira produzido por árvores de acácia-negra.

Results of water bug sampling ascertained by selected sampling methods (net trapping and different water light traps) were compared in this thesis. Selected ecological characteristic of taxocen, based on data gained by these methods, are calculated and compared. The water light trap with heterochromatic LEDs (white LEDs respectively) was found the most forceable method for sampling of both water bug species and their specimens.