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| De Los Santos, Carmen B.; Krause-jensen, Dorte; Alcoverro, Teresa; Marbà, Núria; Duarte, Carlos M.; Van Katwijk, Marieke M.; Pérez, Marta; Romero, Javier; Sánchez-lizaso, José L.; Roca, Guillem; Jankowska, Emilia; Pérez-lloréns, José Lucas; Fournier, Jerome; Montefalcone, Monica; Pergent, Gérard; Ruiz, Juan M.; Cabaço, Susana; Cook, Kevan; Wilkes, Robert J.; Moy, Frithjof E.; Trayter, Gregori Muñoz-ramos; Arañó, Xavier Seglar; De Jong, Dick J.; Fernández-torquemada, Yolanda; Auby, Isabelle; Vergara, Juan J.; Santos, Rui. |
| Seagrass meadows, key ecosystems supporting fisheries, carbon sequestration and coastal protection, are globally threatened. In Europe, loss and recovery of seagrasses are reported, but the changes in extent and density at the continental scale remain unclear. Here we collate assessments of changes from 1869 to 2016 and show that 1/3 of European seagrass area was lost due to disease, deteriorated water quality, and coastal development, with losses peaking in the 1970s and 1980s. Since then, loss rates slowed down for most of the species and fast-growing species recovered in some locations, making the net rate of change in seagrass area experience a reversal in the 2000s, while density metrics improved or remained stable in most sites. Our results... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00508/61966/66058.pdf |
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| Hummel, Herman; Van Avesaath, Pim; Wijnhoven, Sander; Kleine-schaars, Loran; Degraer, Steven; Kerckhof, Francis; Bojanic, Natalia; Skejic, Sanda; Vidjak, Olja; Rousou, Maria; Orav-kotta, Helen; Kotta, Jonne; Jourde, Jerome; Pedrotti, Maria Luiza; Leclerc, Jean-charles; Simon, Nathalie; Rigaut-jalabert, Fabienne; Bachelet, Guy; Lavesque, Nicolas; Arvanitidis, Christos; Pavloudi, Christina; Faulwetter, Sarah; Crowe, Tasman; Coughlan, Jennifer; Benedetti-cecchi, Lisandro; Dal Bello, Martina; Magni, Paolo; Como, Serena; Coppa, Stefania; Ikauniece, Anda; Ruginis, Tomas; Jankowska, Emilia; Weslawski, Jan Marcin; Warzocha, Jan; Gromisz, Slawomira; Witalis, Bartosz; Silva, Teresa; Ribeiro, Pedro; Fernandes De Matos, Valentina Kirienko; Sousa-pinto, Isabel; Veiga, Puri; Troncoso, Jesus; Guinda, Xabier; Juanes De La Pena, Jose Antonio; Puente, Araceli; Espinosa, Free; Perez-ruzafa, Angel; Frost, Matt; Mcneill, Caroline Louise; Peleg, Ohad; Rilov, Gil. |
| Within the COST action EMBOS (European Marine Biodiversity Observatory System) the degree and variation of the diversity and densities of soft-bottom communities from the lower intertidal or the shallow subtidal was measured at 28 marine sites along the European coastline (Baltic, Atlantic, Mediterranean) using jointly agreed and harmonized protocols, tools and indicators. The hypothesis tested was that the diversity for all taxonomic groups would decrease with increasing latitude. The EMBOS system delivered accurate and comparable data on the diversity and densities of the soft sediment macrozoobenthic community over a large-scale gradient along the European coastline. In contrast to general biogeographic theory, species diversity showed no linear... |
| Tipo: Text |
Palavras-chave: Soft sediment; Benthos; Species diversity; Densities; Harmonization of methods; European cline; Biogeography; Latitudinal diversity gradient (LDG). |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00376/48675/49010.pdf |
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| Włodarska‐kowalczuk, Maria; Mazurkiewicz, Mikołaj; Górska, Barbara; Michel, Loic; Jankowska, Emilia; Zaborska, Agata. |
| Fjords have been recently recognized as hotspots of organic carbon (Corg) sequestration in marine sediments. This study aims to identify regional and local drivers of variability of Corg burial in north Atlantic and Arctic fjords. We provide a comparative quantification of Corg, δ13C, photosynthetic pigments content, benthic biomass, consumption, Corg accumulation and burial rates in sediments in six fjords (60 to 810N). Higher sediment Corg content in southern Norway reflected longer phytoplankton growth season and higher productivity. Higher contributions of terrestrial Corg were noted in temperate/southern Norway (dense land vegetation and high precipitation) and Arctic/Svalbard (glacial erosion) than in subarctic/northern Norway locations. Benthic... |
| Tipo: Text |
Palavras-chave: S; Organic matter preservation; Organic carbon sequestration; Benthic carbon mineralization; Sedimentary processes; Early diagenesis; Marine geochemistry. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00591/70318/68353.pdf |
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