Cnr-Istituto di Scienze Marine

L’Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche svolge attività di ricerca fondamentale e applicata in oceanografia fisica, chimica e biologica e in geologia marina.

L’obiettivo è contribuire allo studio dei processi oceanici e della variabilità climatica, allo sviluppo di sistemi/servizi per l’osservazione, la protezione e la gestione sostenibile dell’ambiente marino e delle coste.

                               L’Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche (CNR-ISMAR) svolge attività di

Ricerca Fondamentale e Applicata

in oceanografia fisica, chimica e biologica e in geologia marina con l’obiettivo di contribuire sia allo studio dei processi oceanici e della variabilità climatica che allo sviluppo di sistemi/servizi per l’osservazione, la protezione e la gestione sostenibile dell’ambiente marino e delle coste

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Dati presto disponibili

Optical identification of complex marine particle types for biogeochemical observation from estuarine and coastal waters to the open ocean

Particles in the marine environment not only affect the marine optical properties, but also play a key role in the biogeochemical cycles. However, the different particle types and their optical properties are both complex but also poorly observed, from the open ocean to turbid estuarine and coastal waters. I will mainly focus on the material and structural properties of marine particles from estuarine and coastal waters, on their inherent optical properties and how these observations help improving our understanding of biological carbon pump. Two case studies will be presented: (i) the multi-platform detection of atmospheric particle deposition and marine biological responses in an extreme event, and (ii) particulate organic carbon estimation based on optical identification of particle types in turbid estuarine and coastal areas.

During my year at ISMAR as visiting PhD student, my plans are (i) to investigate more on the optical properties of phytoplankton and organic detritus using complex optical models for marine particles, and (ii) develop a multi-platform approach based on satellite and autonomous in situ BGC-Argo observations to monitor the response of marine ecosystems to extreme events such as Marine Heat Waves.

Collegamento WEBEX:
https://cnronline.webex.com/cnronline/j.php?MTID=mee9ed5ac4049a6b7b8adf0cf915468df

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Il gruppo seminari CNR-ISMAR, Alessandra Conversi (Lerici), Filomena Loreto (Bologna), Gianluigi Liberti (Roma) e Camilla Palmiotto (Bologna).

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Mesocarnivore community structuring in the presence of Africa’s apex predator

Apex predator reintroductions have proliferated across southern Africa, yet their ecological effects and proposed umbrella benefits of associated management lack empirical evaluations. Despite a rich theory on top-down ecosystem regulation via mesopredator suppression, a knowledge gap exists relating to the influence of lions (Panthera leo) over Africa’s diverse mesocarnivore (less than 20 kg) communities. We investigate how geographical variation in mesocarnivore community richness and occupancy across South African reserves is associated with the presence of lions. An interesting duality emerged: lion reserves held more mesocarnivore-rich communities, yet mesocarnivore occupancy rates and evenness-weighted diversity were lower in the presence of lions. Human population density in the reserve surroundings had a similarly ubiquitous negative effect on mesocarnivore occupancy. The positive association between species richness and lion presence corroborated the umbrella species concept but translated into small differences in community size. Distributional contractions of mesocarnivore species within lion reserves, and potentially corresponding numerical reductions, suggest within-community mesopredator suppression by lions, probably as a result of lethal encounters and responses to a landscape of fear. Our findings offer empirical support for the theoretical understanding of processes underpinning carnivore community assembly and are of conservation relevance under current large-predator orientated management and conservation paradigms.

https://royalsocietypublishing.org/doi/abs/10.1098/rspb.2020.2379

The paper has been discussed by The New York Times:

https://www.nytimes.com/2021/03/13/science/lions-south-africa-wildlife-parks.html?s=08#click=https://t.co/O5STTSL0OZ

Next seminar

Giovedì 15 maggio ore 11:00    –    ON LINE LINK

Prof. Andrea Fildani (Università Federico II, Napoli – DiSTAR)
“The building blocks of submarine fans: insights for high-resolution imagery of modern systems”

Flyer

Il Prof. Andrea Fildani è docente di geologia stratigrafica e sedimentologia, presso il Dipartimento di Scienze della Terra, dell’Ambiente e Risorse dell’Università Federico II di Napoli

Attestato di partecipazione:
richiederlo in chat a inizio seminario. L’attestato viene rilasciato a chi rimane in sala per l’intero seminario

“Partecipando a questo incontro, accetti che lo stesso venga registrato e reso disponibile. Dalla registrazione verranno eliminati lista dei partecipanti e chat”
Ricordiamo a tutti di tenere spento il proprio microfono. Accenderlo solo in caso di intervento.

“By accessing this meeting you acknowledge that it will be recorded and made available. Chat and participant list will not be recorded.”
We ask everybody to mute their microphone, unless intervening. Please write your questions in the chat