Publisher Correction: GloPL, a global data base on pollen limitation of plant reproduction.

J. H. Burns was omitted in error from the author list of the original version of this Data Descriptor. This omission has now been corrected in both the HTML and PDF versions.

GloPL, a global data base on pollen limitation of plant reproduction.

Plant reproduction relies on transfer of pollen from anthers to stigmas, and the majority of flowering plants depend on biotic or abiotic agents for this transfer. A key metric for characterizing if pollen receipt is insufficient for reproduction is pollen limitation, which is assessed by pollen supplementation experiments. In a pollen supplementation experiment, fruit or seed production by flowers exposed to natural pollination is compared to that following hand pollination either by pollen supplementation (i.e. manual outcross pollen addition without bagging) or manual outcrossing of bagged flowers, which excludes natural pollination. The GloPL database brings together data from 2969 unique pollen supplementation experiments reported in 927 publications published from 1981 to 2015, allowing assessment of the strength and variability of pollen limitation in 1265 wild plant species across all biomes and geographic regions globally. The GloPL database will be updated and curated with the aim of enabling the continued study of pollen limitation in natural ecosystems and highlighting significant gaps in our understanding of pollen limitation.

Bees, birds and yellow flowers: pollinator-dependent convergent evolution of UV patterns.

Colour is one of the most obvious advertisements of flowers, and occurs in a huge diversity among the angiosperms. Flower colour is responsible for attraction from a distance, whereas contrasting colour patterns within flowers aid orientation of flower visitors after approaching the flowers. Due to the striking differences in colour vision systems and neural processing across animal taxa, flower colours evoke specific behavioural responses by different flower visitors. We tested whether and how yellow flowers differ in their spectral reflectance depending on the main pollinator. We focused on bees and birds and examined whether the presence or absence of the widespread UV reflectance pattern of yellow flowers predicts the main pollinator. Most bee-pollinated flowers displayed a pattern with UV-absorbing centres and UV-reflecting peripheries, whereas the majority of bird-pollinated flowers are entirely UV- absorbing. In choice experiments we found that bees did not show consistent preferences for any colour or pattern types. However, all tested bee species made their first antennal contact preferably at the UV-absorbing area of the artificial flower, irrespective of its spatial position within the flower. The appearance of UV patterns within flowers is the main difference in spectral reflectance between yellow bee- and bird-pollinated flowers, and affects the foraging behaviour of flower visitors. The results support the hypothesis that flower colours and the visual capabilities of their efficient pollinators are adapted to each other.

Surgical procedure in rheumatoid foot deformities: the experience for the Rheumatoorthopedics Department at the Institute of Rheumatology in Warsaw.

This article presents the principles governing surgical procedures in foot deformations operated at the Rheumatoorthopedics Department of the Institute of Rheumatology. The pathophysiology of foot deformities in the course of RA is discussed; indications and contraindications for surgical and conservative treatment are also given, as well as the principles for postoperative treatment.

[Results of treating recurrent dislocation of the patella by the Garlick-Salamon method]. / Wyniki leczenia nawykowego zwichniecia rzepki sposobem Garlickiego-Salamona.

The Garlicki-Salamon method consists in isolation of the patella ligaments, loosening of the lateral pulleys, medial and downward transposition of the patella ligament insertion, wrapping of the medial joint capsule, and transfer of the m. vastus medialis insertion to the medial-upper quadrant of the patella. The late follow-up (at least 5 years of observation) was carried on in 26 knees. 4 results were excellent, 10 -- good, 8 -- fair, 4 -- poor. In nine cases (35 per cent) development osteoarthritis of the patello-femoral joint was found. Recurrence of dislocation was found in 4 cases.