When insects feed on the flowers, pollen is deposited on their bodies and can be transported over long distances. Taxonomical classification of the pollen grains using optical and electron microscopy, however, is often impossible at species level. In addition, it requires a great investment of time...
The bee pollen forum is where we discuss things like recommended doses, tips on how to take pollen, tasty smoothie recipes and my favorite, your experiences using this superfood for better health. Good or bad, we want to hear about it! This is a broad area and one of our most popular...
The inner wall of the pollen grain is called the intine. Most, if not all, of the components of the exine derive from the sporophytic part of the anther (i.e., from the tapetum, a cell layer lining the anther) and are deposited on the pollen surface, while most components of the ...
Pollen analysis is the principal method used for providing quantitative estimates of the former occurrence of tree species (Seppä, 2007). It has the distinct advantage in that the data source (i.e. pollen) is spread in enormous quantitates into the air, and is deposited in various sedimenta...
Thus it is far-fetched to conclude that what is recorded in a single study conducted in a single stand is the gene flow rate characteristic of a species. The number of publications comparing gene flow patterns between different conditions is increasing. However, to date the comparison of ...
Plant-animal interactions may be affected by factors beyond the scale of the restoration. For example, surrounding landscape context may influence pollinator abundance and consequently the amount of pollen deposited. Decreased pollen receipt might then limit seed set. We hypothesized that in restorations...
This protandrous system of flower development is likely to favour cross- fertilisation in this species. Multiple inflorescences sometimes occur on the same individual, providing a potential mechanism for self- fertilisation, however, in these cases inflorescences have been asyn- chronous such that ...
The benefit from wide pollen distribution arises from diminishing returns on pollen deposition on each recipient flower; that is, a donor’s pollen deposited on a single stigma faces intense competition for fertilization among the donor’s own pollen grains. Thus, it is generally accepted that ...
Among them, the most significant examples were found in lakes Estanya and Montcortès (Fig. 8), where hemp was exploited since the Early Middle Ages. The advantage of these sites is that the amount of Cannabis pollen deposited in the sediments is consistent with local cultivation and/or ret...
I was speaking with a fellow beekeeper the other day about feeding pollen sub, and my ears perked up when he noted that his colonies respond to pollen sub much better when there is also a light natural pollen flow going on— something that I’ve also noticed. So what exactly does that ...