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Usluge šumskih ekosustava i funkcije šuma imaju slično značenje, iako se djelomično razlikuju. Funkcije šuma se odnose na namjenu i svrhu šuma od kojih ljudi imaju koristi, dok su usluge šumskih ekosustava posljedice i rezultati funkcija šuma, odnosno koristi od ekosustava za čovjeka i okoliš. Usluge šumskih ekosustava se odnose na sve funkcije šuma, dok se općekorisne funkcije šuma (OKFŠ) odnose samo na one funkcije šuma od kojih svi ljudi imaju koristi. Park šuma Marjan (PŠM) sa svojim različitim ekosustavima pruža brojne usluge i koristi stanovnicima Splita, posjetiteljima park šume i drugim organizmima.U Park šumi Marjan koja je površine od oko 300 ha, najzastupljeniji su šumski ekosustavi koji zauzimaju 2/3 park šume. U radu je po prvi puta definirano 28 usluga šumskih ekosustava PŠM na temelju međunarodne podjele usluga ekosustava i drugih podjela OKFŠ. Pomoću anketnog upitnika napravljeno je rangiranje tih usluga. Pet najvažnijih usluga šumskih ekosustava bile su stvaranje čistog i svježeg zraka, pružanje prirodnog prostora za rekreaciju, pružanje prirodnog prostora za odmor, stvaranje kisika i pružanje prirodnog prostora za edukativne aktivnosti. Procjena novčanih vrijednosti pet najvažnijih usluga šumskih ekosustava napravljena je na temelju određenih kriterija i indikatora. Procijenjene vrijednosti pojedinih najvažnijih usluga šumskih ekosustava iznosile su od 700 do 77.000 kn po hektaru godišnje. Procijenjena ukupna vrijednost pet najvažnijih usluga šumskih ekosustava iznosila je 122.000 kn po ha godišnje, odnosno oko 24,4 milijuna kn godišnje za 200 ha šuma PŠM. Napravljena je i aproksimativna procjena vrijednosti preostalih 23 usluge šumskih ekosustava PŠM. Ukupna procijenjena vrijednost svih 28 usluga šumskih ekosustava PŠM iznosila je oko 708.000 kn po ha godišnje, odnosno oko 141,6 milijuna kn godišnje za 200 ha šuma PŠM. Analizirane su i vrijednosti općekorisnih funkcija šuma dobivene na temelju procjene općekorisnih funkcija šuma prema programu gospodarenja za PŠM, zatim na temelju procjene općekorisnih funkcija mediteranskih šuma i na temelju godišnjeg iznosa naknade za općekorisne funkcije šuma. Procjene su iznosile od 200 kn do 402.000 kn po ha godišnje. Procjene novčanih vrijednosti usluga ekosustava, pa tako i šumskih ekosustava, imaju važnu ulogu u planovima zaštite, upravljanja i gospodarenja ekosustavima, kao i pri smanjivanju nepovoljnih ljudskih utjecaja na ekosustave i njihove usluge o kojima ovisi blagostanje sadašnjih i budućih generacija., Forest ecosystem services and forest functions have similar meaning with partial differences. Forest functions refer to forests’ purposes beneficial to people, while ecosystem services are results of forest functions and still present the benefits of ecosystems to people and environment. Ecosystem services cover all forest functions, whereas non-market forest functions are those which are used by all people. Park forest Marjan with its many ecosystems offers many services and benefits to the inhabitants of Split, park forest visitors and other organisms. Of the 300 ha area of park forest Marjan, forest ecosystems are most prevalent and account for 2/3 of the park forest area. In this paper, 28 forest ecosystem services of park forest Marjan were defined for the first time based on the international ecosystem services classification and other non-market forest function classifications. Services were ranked by means of a questionnaire of stakeholders. The five most important services were the production of clean and fresh air, natural space for recreational activities, natural space for leisure, oxygen production and natural space for educational activities. Monetary value of the five most important services was assessed using several different estimation methods based on certain criteria and indicators. Estimated values of individual most important services ranged from 700 kuna to 77.000 kuna per ha per year. Total estimated value of those services amounted to 122.000 kuna per ha per year, that is, 24,4 million kuna per year for the 200 ha of forests in park forest Marjan. Furthermore, approximative monetary value assessment was performed for other 23 forest ecosystem services. As a result, the total estimated value of all 28 services was 708.000 kuna per ha per year, that is, around 141,6 million kuna per year for the 200 ha of forests in park forest Marjan. Obtained results were validated using assessment of non-market forest functions according to the management plan of park forest Marjan, assessment of non-market forest functions of mediterranean forests and the annual amount of non-market forest function fees, with estimated values ranging from 200 kuna to 402.000 kuna per ha per year. Monetary assessment of forest ecosystem services is key in the management and protection of ecosystems, as well as in reducing of adverse human influences on ecosystems and their services, which serve to the welfare of current and future generations.

Monitoring of Posidonia oceanica was carried out in the framework of the MedMPAnet Project in eight meadows not formerly explored in an area along the north coast of Croatia (Primorje-Gorski Kotar County, Northern Adriatic Sea). The survey was aimed to collect preliminary data as a baseline for future surveillance cycles of the priority habitat 1120 "Posidonia beds" within the framework of the National Monitoring Programme, according to the requirements of the EU Habitats Directive. Fieldwork was carried out in 2013 and 2014 through direct SCUBA diving surveys. At each site, general information on coastal features and potential human pressures was recorded and the following descriptors of meadow conditions were assessed at three depth ranges: shoot density, percent coverage of Posidonia oceanica, dead matte and substrate type; depth and type of lower limits were also recorded for each meadow. Two meadows, located in the island of Rab (Uvala Planka and Frkanj), were investigated during both years of survey in order to test any differences due to the methodological approach we used. Overall, results indicated signs of distress for several meadows. Density ranged from 355±22 to 629±21 shoot per m2 at shallow stations (2 at intermediate depth (about 15 m), and from 79±5 to 157±10 shoot per m2 at the lower limit. Regression was also testified by high coverage of dead matte (locally >40%) especially at the lower limit, which was regressive in four meadows and in no case did it exceed 27 meters in depth. The temporal comparison provided consistent results between the two years for investigation of shoot density, at all sites and throughout the bathymetric range. However, some changes were detected in the deepest portions of both meadows in the coverage of Posidonia oceanica (lower than 50% in 2014). Further monitoring and research campaigns are recommended to improve the level of knowledge on the status of meadows in this area, to develop a baseline for assessing trends on a long-term temporal scale as requested by Habitats Directive, and to shed light on the relevance of both environmental and anthropogenic factors in determining the health status of the meadows. Intercalibration among operators is also suggested to ensure reliable data in implementing the National Monitoring Programme.

Vrsta Cladocora caespitosa (Linnaeus, 1767) je kolonijalna vrsta kamenog koralja iz porodice Faviidae i endem je Jadranskog mora. Vrsta C. caespitosa živi u simbiozi sa jednostaničnim algama zooksantelama, te je stoga ograničena na eufotičku zonu, do dubine od oko 40 m. Nastanjuje pomičnu i čvrstu podlogu, mirna područja, kao i područja sa izraženom dinamikom mora. U ovom radu određivani su uzorci sakupljeni u travnju i prosincu 2004. godine metodom autunomnog ronjenja na postajama Limski zaljev, Pag-Ljubačka vrata, uvala Telašćica i Veli most (Veliko jezero, otok Mljet). Utvrđeni su promjer i broj zooksantela, kao i koncentracije klorofila a i klorofila c. Rezultati su uspoređivani s obzirom na količinu svjetlosti, temperaturu i dubinu mora.