Ugroženost vrste Corallium rubrum (Linnaeus, 1758)

undergraduate thesis

• Title (english): Vulnerability of Corallium rubrum (Linnaeus, 1758)
• Author: Mirna Katalinić
• Mentor: Tatjana Bakran-Petricioli (mentor)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2014, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Crveni koralj (Corallium rubrum) endem je Sredozemnog mora i susjednog dijela Atlanskog oceana te pripada jednom od najduže živućih stanovnika koraligenskih staništa. Posebno je cijenjen zbog svog skeleta koji je čvrst i obojen. U ovom radu navedeni su uzroci ugroženosti vrste Corallium rubrum kao i nekoliko načina njegove zaštite. Crveni koralj bio je izlovljavan već u ranim civilizacijama prije 30.000 godina radi rituala ili za izradu ukrasa, a danas se vadi u najbogatijem pojasu između 80 i 120 metara dubine. Ronjenje je najselektivniji način vađenja, a prema današnjim dopuštenim granicama promjera baze 7 milimetara vadi se samo 6 posto onoga što bi moglo biti kada bi se dopustilo da koralji dožive 98 godina. Osim vađenja crvenih koralja, postoje i prirodni uzroci njihovog ugibanja. Parazitske spužve Spiroxya heteroclite i Cliona sarai buše koralj na njegovoj bazi, a svjetski oceani apsorbiraju sve veće količine CO2 te time oni postaju sve kiselijima što ne pogoduje crvenim koraljima. U Hrvatskoj je crveni koralj od davnina korišten te postoje zapisi iz Zlarina o vađenju crvenog koralja u 14. stoljeću.

Abstract (english)

The red coral (Corallium rubrum) is endemic to the Mediterranean Sea and adjacent part of the Atlantic Ocean and belongs to one of the longest-living organisms of the coralligenous habitat. It is particularly appreciated for its skeleton, which is sturdy and coloured. This work describes the causes of vulnerability of the species Corallium rubrum as well as several ways of its protection. The red coral was exploited already in early civilizations 30.000 years ago for ritual or for making ornaments. Today red coral fishing takes place in the richest zone which is between 80 and 120 meters depth. Diving is the most selective way of coral fishing, and according to today's permitted basal diameter of 7 millimetres, people are fishing only 6 percent of what could be fished if the corals were allowed to grow to be 98 years old. In addition to red coral fishing, there are natural causes of their mortality. Parasitic sponges Spiroxya heteroclite and Cliona sarai are drilling coral base and the oceans absorb increasing amounts of CO2 and thus they are becoming more acidic which is not favourable for the red coral. In Croatia, the red coral has long been exploited. There are records from Zlarin on red coral fishing already in the 14th century.

• Keywords: Corallium rubrum
• Keywords (english): Corallium rubrum
• Language: croatian
• URN:NBN: urn:nbn:hr:217:813874
• Study programme: Title: Environmental Sciences; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) struke znanosti o okolišu)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-12-08 11:28:24