A 150 pounds strength-training athlete may need 109 to 122 grams of protein each day. The amount of protein your body needs to maintain your current lean mass and body weight may vary slightly from these guidelines.
In areas where the climate does not favour a riot of fern growth - and the Canberra Region is a case in point - the niche environments are very clearly marked by the types of fern that grow there. Ferns in fact provide a remarkably good set of ecological indicators. Here are some examples from around Canberra. 1  Asplenium bulbiferum, Mother Spleenwort, grows only near permanent running water, usually in or near waterfalls. The same is true for Hymenophyllum cupressiforme, Filmy Fern. 2  Asplenium trichomanes, the Common Spleenwort, grows only on or near limestone outcrops.
Most ferns reproduce by alternating generations between successive asexual and sexual forms. The sexual form, called the gametophyte or prothallium, is a tiny kidney-shaped haploid (N) plant that is difficult to find in the wild. The asexual form, or sporophyte form, is represented by the fern plant as it is commonly known and is diploid (2N). Sporophytes can reproduce either by vegetative cloning via their rhizomes or through spore formation via meiosis. Spores, rather than gametes, are the unicellular, haploid products of meiosis in fern plants. Spores in turn undergo mitotic cell divisions to produce the multicellular, haploid gametophyte. Relative to the familiar sporophytes, the fern gametophytes are small and inconspicuous. Commonly in primitive vascular plants, the haploid gametophyte phase occurs in a manner that allows it to be surrounded by tissues of the parent sporophyte, such as within cones, seeds, or pollen grains.