Teaming to Upgrade to Excellence in Environmental Biology, Ecosystem Research and AgroBiodiversity

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A trait-based framework for seagrass ecology: trends and prospects

Publication . Moreira-Saporiti, Agustín; Teichberg, Mirta; Garnier, Eric; Cornelissen, J. Hans C.; Alcoverro, Teresa; Björk, Mats; Boström, Christoffer; Dattolo, Emanuela; Eklöf, Johan S.; Hasler-Sheetal, Harald; Marbà, Nuria; Marín-Guirao, Lázaro; Meysick, Lukas; Olivé, Irene; Reusch, Thorsten B. H.; Ruocco, Miriam; Silva, João; Sousa, Ana I.; Procaccini, Gabriele; Santos, Rui

In the last three decades, quantitative approaches that rely on organism traits instead of taxonomy have advanced different fields of ecological research through establishing the mechanistic links between environmental drivers, functional traits, and ecosystem functions. A research subfield where trait-based approaches have been frequently used but poorly synthesized is the ecology of seagrasses; marine angiosperms that colonized the ocean 100M YA and today make up productive yet threatened coastal ecosystems globally. Here, we compiled a comprehensive trait-based response-effect framework (TBF) which builds on previous concepts and ideas, including the use of traits for the study of community assembly processes, from dispersal and response to abiotic and biotic factors, to ecosystem function and service provision. We then apply this framework to the global seagrass literature, using a systematic review to identify the strengths, gaps, and opportunities of the field. Seagrass trait research has mostly focused on the effect of environmental drivers on traits, i.e., "environmental filtering" (72%), whereas links between traits and functions are less common (26.9%). Despite the richness of trait-based data available, concepts related to TBFs are rare in the seagrass literature (15% of studies), including the relative importance of neutral and niche assembly processes, or the influence of trait dominance or complementarity in ecosystem function provision. These knowledge gaps indicate ample potential for further research, highlighting the need to understand the links between the unique traits of seagrasses and the ecosystem services they provide.

2023Journal article

Open access

The genomic history and global expansion of domestic donkeys

Publication . Todd, Evelyn T.; Tonasso-Calvière, Laure; Chauvey, Loreleï; Schiavinato, Stéphanie; Fages, Antoine; Seguin-Orlando, Andaine; Clavel, Pierre; Khan, Naveed; Pérez Pardal, Lucía; Patterson Rosa, Laura; Librado, Pablo; Ringbauer, Harald; Verdugo, Marta; Southon, John; Aury, Jean-Marc; Perdereau, Aude; Vila, Emmanuelle; Marzullo, Matilde; Prato, Ornella; Tecchiati, Umberto; Bagnasco Gianni, Giovanna; Tagliacozzo, Antonio; Tinè, Vincenzo; Alhaique, Francesca; Luis Cardoso, João; Valente, Maria João; Telles Antunes, Miguel; Frantz, Laurent; Shapiro, Beth; Bradley, Daniel G.; Boulbes, Nicolas; Gardeisen, Armelle; Horwitz, Liora Kolska; Öztan, Aliye; Arbuckle, Benjamin S.; Onar, Vedat; Clavel, Benoît; Lepetz, Sébastien; Vahdati, Ali Akbar; Davoudi, Hossein; Mohaseb, Azadeh; Mashkour, Marjan; Bouchez, Olivier; Donnadieu, Cécile; Wincker, Patrick; Brooks, Samantha A.; Beja-Pereira, Albano; Wu, Dong-Dong; Orlando, Ludovic

Donkeys transformed human history as essential beasts of burden for long-distance movement, especially across semi-arid and upland environments. They remain insufficiently studied despite globally expanding and providing key support to low- to middle-income communities. To elucidate their domestication history, we constructed a comprehensive genome panel of 207 modern and 31 ancient donkeys, as well as 15 wild equids. We found a strong phylogeographic structure in modern donkeys that supports a single domestication in Africa similar to 5000 BCE, followed by further expansions in this continent and Eurasia and ultimately returning to Africa. We uncover a previously unknown genetic lineage in the Levant similar to 200 BCE, which contributed increasing ancestry toward Asia. Donkey management involved inbreeding and the production of giant bloodlines at a time when mules were essential to the Roman economy and military.

2022-09Journal article

Open access

Biodiversity consequences of Caulerpa prolifera takeover of a coastal lagoon

Publication . Parreira, Filipe; Martínez-Crego, Begoña; Lourenço Afonso, Carlos Manuel; Machado, Margarida; Oliveira, Frederico; Gonçalves, Jorge Manuel Santos; Santos, Rui

The genus Caulerpa has attracted much attention because many of its species were introduced into non-native regions and became notoriously invasive. This is the case of Caulerpa prolifera that has been rapidly expanding in Ria Formosa lagoon, taking over the deeper unvegetated soft bottoms and competing with seagrass meadows in the shallower areas. Here we address how C. prolifera invasion may affect the support of biodiversity, and specifically, the provision of habitat and nursery for commercial species by the native habitats of this coastal lagoon. Even though no significant differences in total species richness, diversity and evenness were found between C. prolifera and the native unvegetated habitat, the dissimilarity between these two habitats was highest, mostly driven by the extreme reduction of the gastropod Bittium reticulatum and of the tanaid Apseudopsis formosus. This may implicate changes in the trophic interactions of the ecosystem, for example decreasing the tanaid food source for seahorses, which are presently endangered in the lagoon. On the other hand, the fauna species richness, diversity and evenness were significantly higher in the native seagrass habitat than in C. prolifera. Juveniles of valuable flat and sparid fish were only observed in unvegetated sediments and seagrass meadows, respectively. The aggressive spread of C. prolifera in Ria Formosa may alter the structure of native faunal communities, with likely negative implications on fisheries. Nevertheless, the global biodiversity of the lagoon will not be likely drastically affected unless the seaweed takes over the seagrass meadows.

2021Journal article

Restricted access