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Robotic monitoring of forests: a dataset from the EU habitat 9210* in the Tuscan Apennines (central Italy)

Effective monitoring of habitats is crucial for their preservation. As the impact of anthropic activities on natural habitats increases, accurate and up-to-date information on the state of ecosystems has become imperative. This paper presents a new dataset collected from the forests located in the Tuscan Apennines (Italy) using the ANYmal robot. The dataset provides information regarding the structure and composition of the EU priority habitat 9210*. The dataset, which is publicly available t...

Conjunctive degrees and cylinders

In this article we define and study the notion of a (c,c_1)-cylinder, which turns out to be very useful instrument for investigating the relationships between conjunctive reducibility (c-reducibility) and its injective version c_1-reducibility. Using this notion we prove the following results: (1) Neither hypersimple sets nor hemimaximal sets can be (c,c_1)-cylinders; (2) The c-degree of a noncomputable c.e. set contains either only one or infinitely many noncomputable c_1-degrees; (3) the...

Contributi per una flora vascolare di Toscana. XV (959-1054)

Vengono presentate nuove località e/o conferme relative 96 taxa specifici e sottospecifici di piante vascolari della flora vascolare toscana, appartenenti a 77 generi e 43 famiglie: Mesembryanthemum (Aizoaceae), Alisma, Sagittaria (Alismataceae), Amaranthus, Chenopodium (Amaranthaceae), Allium (Amaryllidaceae), Torilis (Apiaceae), Nerium (Apocynaceae), Asparagus (Asparagaceae), Aposeris, Bidens, Calendula, Gamochaeta, Leucanthemum, Rhagadiolus, Taraxacum (Asteraceae), Anchusa (Boraginaceae), ...

Floral nectar: fifty years of new ecological perspectives beyond pollinator reward

Floral nectar is central to ecology, since it mediates interactions with pollinators, flower-visiting antagonists and microbes through its chemical composition. Here we review how historical assumptions about its ecological meaning were first challenged, then modified and expanded since the discovery of secondary metabolites in nectar. We then explore the origin of specific neuroactive nectar compounds known to act as important insect neurotransmitters, and how advances in the field of b...

A clear-cut difference in nuptial strategies may shape sperm traits in two paper wasps

Spermatozoa vary in quantity, quality and design across species and individuals. Here, we reported the first detailed analysis of sperm traits in two primitively eusocial paper wasps, Polistes dominula and Polistes gallicus, which differ in their nuptial strategies and body size as follows: lek-territoriality of the large P. dominula males, defending exclusive territories at landmarks; scramble competition of the small P. gallicus, where serial mating may occur because males interfere with ri...

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