Kartiranje staništa cvjetnice Posidonia oceanica

undergraduate thesis

• Title (english): Mapping of seagrass Posidonia oceanica habitats
• Author: Neven Fatuta
• Mentor: Petar Kružić (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2011, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Posidonia oceanica (L.) Delile, morska cvjetnica (sjemenjača) endemska za Sredozemlje, veoma je važan dio morskog ekosustava. Nastanjuje morsku stepenicu infralitorala gdje tvori guste livade koje zbog raznolikosti i broja živih bića u njima te geološkog i biološkog utjecaja na okoliš nazivamo biocenozama naselja vrste Posidonia oceanica. Posidonija je kao primarni producent, uz alge i fitoplankton, važan proizvođač organskog materijala i kisika te kao takva predstavlja temeljni dio morskih... More hranidbenih lanaca. Zbog ugroženosti posidonije ljudskim aktivnostima (onečišćenje, ribolov, sidrenje, gradnja) iznimno je važno dokumentirati njenu rasprostranjenost kako bi se mogle utvrditi konzervacijske mjere za pojedina područja i zaštititi tu bitnu sastavnicu morskog ekosustava. Prvi korak u tome je kartiranje postojećih livada kao način dobivanja osnovnih podataka za svaki daljnji rad. U ovom seminaru obrađene su najčešće metode kartiranja posidonije, njihove prednosti i mane te princip rada svake od njih. Indirektne metode u koje spadaju satelitsko snimanje, aerofoto snimanje te akustično tj. ultrazvučno snimanje morskog dna koriste se kako bi dobili opće slike relativno velikih područja od interesa. Direktne metode kao ronjenje s autonomnim ronilačkim aparatom ili SCUBA ronjenje duž ronilačkih transekata, ronjenje na dah u vrlo plitkim područjima, snimanje uz pomoć daljinski upravljanog podvodnog plovila ili neke druge podvodne kamere te lasersko snimanje omogućavaju znanstvenicima da prikupe detaljne podatke o manjim dijelovima morskog dna. Također, takve metode su neophodne u kalibriranju i potvrdi rezultata indirektnih metoda. Less

Abstract (english)

Posidonia oceanica (L.) Delile, a flowering plant endemic to Mediterranean Sea, is a very important part of marine ecosystem. It inhabits the infralittoral zone where it forms dense meadows which are for the large number and diversity of creatures in them and for geological and biological impact on the enviroment called Posidonia oceanica biocenoses. As a primary producer, along with algae and phytoplankton, Posidonia is important for producing large amounts of organic material and oxygen... More and as such represents a fundamental part of marine food chains. Because of the threat human activities (pollution, fishing, anchoring, construction) present to posidona, it is very important to document its distribution which is than used to establish conservation measures for certain areas, thus protecting that essential component of the marine ecosystem. The first step in this is mapping the existing meadows as a way of obtaining the basic data for each following research and activity. This work deals with the most common methods of mapping posidonia, their advantages and disadvantages and working principle of each. Indirect methods, which include satellite imagery, aerial photography and sonar mapping are used to get a general picture of relatively large areas of interest. Direct methods such as diving with scuba equipment along the transect, snorkeling in very shallow areas, using remotely operated vehicles (ROV) or some other method to make an underwater video recording and airborne laser mapping enable scientists to gather detailed information on smaller seabed areas. Also, such methods are necessary to calibrate and confirm the results of indirect methods. Less

• Keywords: Posidonia oceanica
• Keywords (english): Posidonia oceanica
• Language: croatian
• URN:NBN: urn:nbn:hr:217:884303
• Study programme: Title: Ecology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2018-04-05 10:41:49