Science Rendue Possible

Clemente, K. J. E., and M. S. Thomsen. 2023. High temperature frequently increases facilitation between aquatic foundation species: a global meta‐analysis of interaction experiments between angiosperms, seaweeds, and bivalves. Journal of Ecology.

Many studies have quantified ecological impacts of individual foundation species (FS). However, emerging data suggest that FS often co‐occur, potentially inhibiting or facilitating one another, thereby causing indirect, cascading effects on surrounding communities. Furthermore, global warming is accelerating, but little is known about how interactions between co‐occurring FS vary with temperature.Shallow aquatic sedimentary systems are often dominated by three types of FS: slower‐growing clonal angiosperms, faster‐growing solitary seaweeds, and shell‐forming filter‐ and deposit‐feeding bivalves. Here, we tested the impacts of one FS on another by analyzing manipulative interaction experiments from 148 papers with a global meta‐analysis.We calculated 1,942 (non‐independent) Hedges’ g effect sizes, from 11,652 extracted values over performance responses, such as abundances, growths or survival of FS, and their associated standard deviations and replication levels. Standard aggregation procedures generated 511 independent Hedges’ g that was classified into six types of reciprocal impacts between FS.We found that (i) seaweeds had consistent negative impacts on angiosperms across performance responses, organismal sizes, experimental approaches, and ecosystem types; (ii) angiosperms and bivalves generally had positive impacts on each other (e.g., positive effects of angiosperms on bivalves were consistent across organismal sizes and experimental approaches, but angiosperm effect on bivalve growth and bivalve effect on angiosperm abundance were not significant); (iii) bivalves positively affected seaweeds (particularly on growth responses); (iv) there were generally no net effects of seaweeds on bivalves (except for positive effect on growth) or angiosperms on seaweeds (except for positive effect on ‘other processes’); and (v) bivalve interactions with other FS were typically more positive at higher temperatures, but angiosperm‐seaweed interactions were not moderated by temperature.Synthesis: Despite variations in experimental and spatiotemporal conditions, the stronger positive interactions at higher temperatures suggest that facilitation, particularly involving bivalves, may become more important in a future warmer world. Importantly, addressing research gaps, such as the scarcity of FS interaction experiments from tropical and freshwater systems and for less studied species, as well as testing for density‐dependent effects, could better inform aquatic ecosystem conservation and restoration efforts and broaden our knowledge of FS interactions in the Anthropocene.

Welk, E., and A. Oesau. 2019. Carex liparocarpos in Deutschland – ein Erstnachweis und viele Fragen. Kochia 12: 83–98.

Carex liparocarpos s. str., die Glanzfrüchtige Segge, wurde durch Albert Oesau im NSG Lennebergwald bei Mainz erstmals sicher für Deutschland nachgewiesen. Der Neufund wird hier areal- und vegetationskundlich eingeordnet und diskutiert. Dabei werden zahlreiche interessante Fakten, aber auch Fragen und Unklarheiten aufgeworfen. Die Art ist nah verwandt mit C. supina, mit der sie oft verwechselt wurde und wird. In der Ukraine ist die Abgrenzung zu C. schkuhrii (Syn. C. liparocarpos subsp. bordzilowskii) unklar. Mit C. turkestanica kommt der engere Verwandtschaftskreis als Subsektion Nitidae bis in mittelasiatische Gebirge vor. Das Hauptareal der Art wird – genauer als bisher – als submediterran-westpannonisch charakterisiert. Azonale Arealbereiche sind durch südatlantische, nordadriatische und pontische Dünenregionen repräsentiert. Mediterran-alpine, isolierte Vorposten wurden in Nordafrika bis auf ca. 30° n. Br. gefunden. In Frankreich gibt es wenige, bis auf ca. 50° n. Br. vorgeschobene, isolierte Vorposten, von denen viele gefährdet bzw. erloschen sind. C. liparocarpos s. str. besiedelt vorrangig neutral-basische Sandsteppen-, Dünen-, Fluss-Schotter- und Felserosionsstandorte und ist u. a. typisch für die Festucetalia vaginatae, Festucetalia valesiacae, Artemisio albae-Brometalia erecti, Scorzoneretalia villosae, Trachynietalia (Brachypodietalia) distachyi, Ononidetalia striatae und Artemisio-Koelerietalia. Auf Grundlage der gewonnenen Gesamtübersicht zu Verbreitung und Habitatbindung wird der Einbürgerungsstatus des Neufundes bewertet. Nach dem derzeitigem floristischen Kenntnisstand erscheint eine neophytische Einschleppung wahrscheinlich – ist aber nicht zwingend anzunehmen, da der Wuchsort in einem für die Art vegetationskundlich nahezu perfekt typischen Lebensraum liegt, der allerdings floristisch gut durchforscht ist.

Canavan, S., Z. T. Brym, G. Brundu, K. Dehnen-Schmutz, D. Lieurance, T. Petri, W. H. Wadlington, et al. 2022. Cannabis de-domestication and invasion risk. Biological Conservation 274: 109709.

Cultivated plants provide food, fiber, and energy but they can escape, de-domesticate, colonize agroecosystems as weeds, and disrupt natural ecosystems as invasive species. Escape and invasion depend on traits of the species, type and rate of domestication, and cultivation context. Understanding this “de-domestication invasion process” is critical for managing conservation efforts to reduce unintended consequences of cultivated species in novel areas. Cannabis (Cannabis sativa L.) is an ideal case study to explore this process because it was one of the earliest plants to co-evolve with humans, has a crop to weed history, and has been introduced and cultivated globally. Moreover, recent liberalization of cannabis cultivation and use policies have raised concerns about invasion risk. Here, we synthesize knowledge on cannabis breeding, cultivation, and processing relevant to invasion risk and outline research and management priorities to help overcome the research deficit on the invasion ecology of the species. Understanding the transition of cannabis through the de-domestication-invasion process will inform policy and minimize agricultural and environmental risks associated with cultivation of domesticated species.

Xue, T., S. R. Gadagkar, T. P. Albright, X. Yang, J. Li, C. Xia, J. Wu, and S. Yu. 2021. Prioritizing conservation of biodiversity in an alpine region: Distribution pattern and conservation status of seed plants in the Qinghai-Tibetan Plateau. Global Ecology and Conservation 32: e01885.

The Qinghai-Tibetan Plateau (QTP) harbors abundant and diverse plant life owing to its high habitat heterogeneity. However, the distribution pattern of biodiversity hotspots and their conservation status remain unclear. Based on 148,283 high-resolution occurrence coordinates of 13,450 seed plants, w…

Kovalchuk, I., M. Pellino, P. Rigault, R. van Velzen, J. Ebersbach, J. R. Ashnest, M. Mau, et al. 2020. The Genomics ofCannabisand Its Close Relatives. Annual Review of Plant Biology 71: 713–739.

Cannabis sativa L. is an important yet controversial plant with a long history of recreational, medicinal, industrial, and agricultural use, and together with its sister genus Humulus, it represents a group of plants with a myriad of academic, agricultural, pharmaceutical, industrial, and social int…

Li, M., J. He, Z. Zhao, R. Lyu, M. Yao, J. Cheng, and L. Xie. 2020. Predictive modelling of the distribution of Clematis sect. Fruticella s. str. under climate change reveals a range expansion during the Last Glacial Maximum. PeerJ 8: e8729.

Background The knowledge of distributional dynamics of living organisms is a prerequisite for protecting biodiversity and for the sustainable use of biotic resources. Clematis sect. Fruticella s. str. is a small group of shrubby, yellow-flowered species distributed mainly in arid and semi-arid areas…

Joffard, N., F. Massol, M. Grenié, C. Montgelard, and B. Schatz. 2018. Effect of pollination strategy, phylogeny and distribution on pollination niches of Euro‐Mediterranean orchids I. Bartomeus [ed.],. Journal of Ecology 107: 478–490.

1.Pollination niches are important components of ecological niches and have played a major role in the diversification of Angiosperms. In this study, we focused on Euro‐Mediterranean orchids, which use diverse pollination strategies and interact with various functional groups of insects. In these or…