Axiophyte

Last updated
Dog's Mercury an axiophyte associated with ancient woodlands in the UK Mercurialis perennis.jpg
Dog's Mercury an axiophyte associated with ancient woodlands in the UK

An axiophyte (Greek: "worthy plant") is a plant that is of particular interest to botanists, conservationists and ecologists. The significance of axiophytes is from their strong association with habitats considered to be of high merit for conservation. Axiophytes are a relatively recent concept which has its roots in such ideas as "ancient woodland indicator species". According to the Botanical Society of Britain and Ireland (BSBI), around 40% of plant species can be considered axiophytes. [1]

Very rare species are not considered axiophytes; for a species to be a useful indicator of quality habitat it must be relatively frequent in those habitats, but scarce elsewhere. A typical example would be dog's mercury ( Mercurialis perennis ), a plant slow to colonise new sites, but common in ancient woodland and old hedgerows.

The number of axiophytes on a site provides a crude, but convenient, measure of its nature conservation importance. It is a particularly useful approach when comparing otherwise similar sites. Over time axiophyte numbers can be used for monitoring. They have been used as a metric for evaluating the ecological value of areas at a landscape scale and in setting strategic conservation priorities [2] [3]

The BSBI gives the following criteria for axiophytes:

(An exception to the 25% rule can be made for species in conservation habitats that are particularly well represented and widespread in the county.)

The concept of axiophytes appears not to have been used outside the UK, but it offers the potential to assist in setting conservation priorities in any area, although local work would be needed to set appropriate criteria.

See also

Related Research Articles

<i>Hyacinthoides non-scripta</i> Species of flowering plant

Hyacinthoides non-scripta is a bulbous perennial plant, found in Atlantic areas from north-western Spain to the British Isles, and also frequently used as a garden plant. It is known in English as the common bluebell or simply bluebell, a name which is used in Scotland to refer to the harebell, Campanula rotundifolia. In spring, H. non-scripta produces a nodding, one-sided inflorescence of 5–12 tubular, sweet-scented violet–blue flowers, with strongly recurved tepals, and 3–6 long, linear, basal leaves.

<i>Allium ursinum</i> Species of flowering plant in the family Amaryllidaceae

Allium ursinum, known as wild garlic, ramsons, cowleekes, cows's leek, cowleek, buckrams, broad-leaved garlic, wood garlic, bear leek, Eurasian wild garlic or bear's garlic, is a bulbous perennial flowering plant in the amaryllis family Amaryllidaceae. It is native to Europe and Asia, where it grows in moist woodland. It is a wild relative of onion and garlic, all belonging to the same genus, Allium. There are two recognized subspecies: A. ursinum subsp. ursinum and A. ursinum subsp. ucrainicum.

<i>Adoxa moschatellina</i> Species of flowering plant in the family Adoxaceae

Adoxa moschatellina, moschatel, is a species of flowering plant in the family Adoxaceae which has a highly distinctive inflorescence. This herbaceous perennial grows in relatively sunny places in old woodland, such as the edges of streams, and in shady places in open habitats such as rock crevices in limestone pavements. It has a limited ability to spread by seed, but expands vegetatively via its long stolons. It is a widespread but generally uncommon plant which is not considered to be threatened within its natural range.

<span class="mw-page-title-main">Ancient woodland</span> Type of woodland in the United Kingdom

In the United Kingdom, an ancient woodland is a woodland that has existed continuously since 1600 or before in England, Wales and Northern Ireland. Planting of woodland was uncommon before those dates, so a wood present in 1600 is likely to have developed naturally.

<i>Gagea lutea</i> Species of flowering plant in the lily family Liliaceae

Gagea lutea, known as the yellow star-of-Bethlehem, is a Eurasian flowering plant species in the family Liliaceae. It is widespread in central Europe with scattered populations in Great Britain, Spain, and Norway to Siberia and Japan.

<i>Cephalanthera rubra</i> Species of orchid

Cephalanthera rubra, known as red helleborine, is an orchid found in Europe, North Africa and southwest Asia. Although reasonably common in parts of its range, this Cephalanthera has always been one of the rarest orchids in Britain.

<i>Ophrys insectifera</i> Species of flowering plant in the orchid family Orchidaceae

Ophrys insectifera, the fly orchid, is a species of orchid and the type species of the genus Ophrys. It is remarkable as an example of the use of sexually deceptive pollination and floral mimicry, as well as a highly selective and highly evolved plant–pollinator relationship.

<span class="mw-page-title-main">United Kingdom Biodiversity Action Plan</span>

The United Kingdom Biodiversity Action Plan or (UK BAP) was the UK government's response to the Convention on Biological Diversity, opened for signature at the Rio Earth Summit in 1992. The UK was the first country to produce a national Biodiversity Action Plan. It was published in 1994 and created action plans for priority species and habitats in the UK that were most under threat so as to support their recovery.

<i>Cephalanthera longifolia</i> Species of orchid

Cephalanthera longifolia, the narrow-leaved helleborine, sword-leaved helleborine or long-leaved helleborine, is a rhizomatous herbaceous perennial plant in the family Orchidaceae. It is native to light woodland, and widespread across Europe, Asia and North Africa from Ireland and Morocco to China. This includes the United Kingdom, Iran, Russia, Kazakhstan, Turkey, Algeria, India, Pakistan, Germany, Italy, France, Spain, Portugal and many other countries.

<i>Polystichum aculeatum</i> Species of fern

Polystichum aculeatum, the hard shield-fern, is an evergreen fern native to Europe. It is most abundant in upland regions of the British Isles and western France, where it benefits from the combination of mild winters and moist summers, but also occurs more locally across most of Europe except northern Scandinavia, northern Russia; in the Mediterranean region it is confined to high altitudes. It grows on steep slopes in woodlands. it is sometimes considered an indicator of the presence of ancient woodlands.

A Regional Red List is a report of the threatened status of species within a certain country or region. It is based on the IUCN Red List of Threatened Species, an inventory of the conservation status of species on a global scale. Regional Red Lists assess the risk of extinction to species within a political management unit and therefore may feed directly into national and regional planning. This project is coordinated by the Zoological Society of London, the World Conservation Union (IUCN) and partners in national governments, universities and organizations throughout the world.

<i>Vandenboschia speciosa</i> Species of fern

Vandenboschia speciosa, synonym Trichomanes speciosum, commonly known as the Killarney fern, is a species of fern found widely in Western Europe. It is most abundant in Ireland, Great Britain, Brittany, Galicia, Canary Islands, Madeira and the Azores, but is also found in other locations including France, Spain, Portugal and Italy. It is a relict endemic European species with a disjunct distribution, having had a much wider distribution before the climate changes of the Tertiary and Quaternary periods.

<i>Potamogeton coloratus</i> Species of aquatic plant

Potamogeton coloratus, the fen pondweed, is an aquatic plant in the genus Potamogeton. It is found in shallow peaty calcareous lakes, ponds and ditches, commonly associated with lowland fens.

<i>Potamogeton gramineus</i> Species of aquatic plant

Potamogeton gramineus is a species of aquatic plant known by the common name various-leaved pondweed, variableleaf pondweed, grass-leaved pondweed or grassy pondweed, native to the northern hemisphere where it grows in shallow, clean water.

<i>Potamogeton compressus</i> Species of aquatic plant

Potamogeton compressus is a species of aquatic plant known by the common names grass-wrack pondweed, flatstem pondweed and eel-grass pondweed.

<i>Stellaria neglecta</i> Species of flowering plant in the carnation family Caryophyllaceae

Stellaria neglecta, greater chickweed, is an annual to short-lived herbaceous perennial flowering plant in the family Caryophyllaceae. It is native to Europe and Asia, where it grows in hedges and woodland margins on neutral to slightly acid, damp soils, and is widespread but rarely abundant. It has been introduced to North America, where it has been spreading in recent decades.

<i>Allium paradoxum</i> Species of flowering plant in the family Amaryllidaceae

Allium paradoxum, the few-flowered garlic or few-flowered leek, is an Asian species of wild onion in the Amaryllis family. It is native to mountainous regions of Iran, Caucasus, and Turkmenistan and invasive in Europe.

<i>Potamogeton acutifolius</i> Species of plant

Potamogeton acutifolius is a European species of aquatic plant in the family Potamogetonaceae, known by the common name sharp-leaved pondweed. It is threatened and declining in at least part of its range.

<i>Astragalus danicus</i> Species of legume

Astragalus danicus, known as purple milk-vetch, is a species of flowering plant in the family Fabaceae (legumes), which is native to Europe.

<span class="mw-page-title-main">Cow Myers (wetland)</span> Site of Special Scientific Interest in North Yorkshire, England

Cow Myers is a Site of Special Scientific Interest (SSSI) located in the Nidderdale Area of Outstanding Natural Beauty (AONB), near Ripon, North Yorkshire, England. The site was designated in 1984 for its fen and alder carr habitat, which supports a diversity of wetland plant life. Of particular interest are the bird's eye primrose which is scarce in Yorkshire, and early marsh orchid. There is no public access to this site, no vehicular access, and no public facilities.

References

  1. "Axiophytes – Botanical Society of Britain & Ireland".
  2. "Archived copy" (PDF). Archived from the original (PDF) on 2014-01-16. Retrieved 2012-06-01.{{cite web}}: CS1 maint: archived copy as title (link)
  3. http://www.bsbi.org.uk/Nsl17p13.pdf%7C Axiophytes in the Meres & Mosses