Strandlines
Habitat Definition
The strandline defines the high water mark at the top of the beach, and its position varies depending on the levels of the
tides. They are made up of mostly natural materials and are not only important biologically, but physically by
disseminating wave energy that reaches the shore. The strandline offers protection to invertebrates from sunlight and
desiccation, as well as from predators. Not all of them are pleasing, some of them do have an odour that can appear to
be unpleasant, this is due to the organic vegetation decomposing and this offers an important food source for filter
feeding species that occur below the sand, e.g. marine worms as well as predators further up the food chain such as
gulls and wading birds.
The strandline is mobile, being shifted by wind and tidal action, and occasionally is swept away in stormy
weather conditions. The strandline can in some circumstances act as a stabiliser for the upper shore, as the
organic matter bonds together with the sand particles, which then initiate dune formation and colonising
plants.
The coastline of Shetland is approximately 900 miles (or 1,450 km) long, and it includes geos, deep and
shallow sheltered voes, coastal cliffs, muddy inlets, rocky, shingle and sandy shores.
The strandline occurs on rocky, sandy and muddy shores and consists of organic and inorganic material. It contains
seaweed and dead vegetation plus plastics, wood, fishing gear, and other forms of marine litter that is washed ashore by
the tides, currents and storms.
The strandline is a microhabitat (a very specific habitat in which a population is found) and of interest to naturalists, as
it varies considerably around the British coastline, depending on the shore type, resident coastal breeding birds, marine
and land-based litter sources and quantities, invertebrates, and climate. In Shetland it plays host to a wide range of birds
and associated species

http://www.shetland.gov.uk/conservation/documents/HabitatAct...

http://commons.wikimedia.org/wiki/File:Kidzina_orlowo.jpg


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Note added at   25 min (2014-11-18 17:12:12 GMT)
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Uwaga: drift line można sobie darować- moim zdaniem

Along marine coasts, ‘wrack’ is the organic material stranded along the high tide line, consisting of salt marsh reeds, sea grass, kelp, and other marine algae. - http://www.usgs.gov/blogs/greatlakesscience/2014/10/03/lets-...

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Wrack is primarily made up of kelp that has come loose from where it grows offshore and has washed up along the beach. The California Coastal Commission has defined "wrack" or "beach wrack" as "organic material such as kelp and sea grass that is cast up onto the beach by surf, tides, and wind." - http://www.beachapedia.org/Wrack

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"Wrack," it's called--the tangled mass of seaweed found on beaches around the world. It washes in with the high tide and lingers long after the waters recede. - http://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=124910&...

Propozycja

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Note added at 15 mins (2014-11-18 17:02:34 GMT)
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WRACK is another good description.

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Note added at 6 hrs (2014-11-18 23:43:06 GMT)
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Among them are new habitats in the Natura 2000 network, as of 1210 Kidzina/organic debris material on the beach
http://en.fomobi.pl/
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uring the last surge range marked on the beach by debris ..... posits organic matter that provides the sand with nutrients ... to in Poland as kidzina detritus.
http://www.baltex-research.eu/publications/Books and article...
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Ten termin jest stosowany w materiałach UE (dot. właśnie polskiej kidziny). Pamiętam, że strasznie się namęczyłam, żeby go znaleźć. Źródła nie pamiętam, ale było oficjalne.