Transition from heathland to scrub in south-eastern Tasmania: extent of change since the 1970s, floristic depletion and management implications

Verfasser / Beitragende:
[Tessa Bargmann, Jamie Kirkpatrick]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biodiversity and Conservation, 24/2(2015-02-01), 213-228
Format:
Artikel (online)
ID: 605528012
LEADER caa a22 4500
001 605528012
003 CHVBK
005 20210128100811.0
007 cr unu---uuuuu
008 210128e20150201xx s 000 0 eng
024 7 0 |a 10.1007/s10531-014-0803-6  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10531-014-0803-6 
245 0 0 |a Transition from heathland to scrub in south-eastern Tasmania: extent of change since the 1970s, floristic depletion and management implications  |h [Elektronische Daten]  |c [Tessa Bargmann, Jamie Kirkpatrick] 
520 3 |a Heathland is a speciose and floriferous vegetation type, defined by its stature (<2m) and dominance by scleromorphic shrubs. Heathland has been in decline globally, and much of its loss has been due to less frequent fire, while in some places more frequent fire has resulted in degradation through the loss of obligate seeding species. The aims of the present study were to determine: (1) the extent of the transition from heathland to scrub in south-eastern Tasmania, Australia between c1976 and 2013; (2) the spatial attributes of heathland that are likely to have been the most instrumental in heathland loss; (3) whether the transition to scrub resulted in the loss of local species richness and changed species composition when taking both above ground vegetation and the soil seed bank into account; and (4) the implications of the answers to the first three questions for heathland management. Changes in heathland and scrub extent were mapped from remote sensing imagery and ground truthing. At one locality with floristic data from the heathland of 1976, the scrub that has replaced the heathland was surveyed and soil collected to determine seed banks under heating and non-heating treatments. Approximately one third of the 1976 heathland had become scrub by 2013, mostly around the margins of heathland patches and near built up areas. Twenty-two species present in 1976 were not found in either the scrub or seed bank, with only three species absent from the scrub, but present in the 1976 heath, being found in the seed bank. The species composition of germinates in the unheated treatment was dominated by taxa that colonise mechanically disturbed areas, such as Juncus, while germinates in the heat treated soils were largely scleromorphic heath species. The depletion of species richness by the transition to scrub, and the large extent of its incidence, suggest that a higher frequency of planned fire is needed in south-eastern Tasmania. 
540 |a The Author(s), 2014 
690 7 |a Biodiversity conservation  |2 nationallicence 
690 7 |a Landscape change  |2 nationallicence 
690 7 |a Fire  |2 nationallicence 
690 7 |a Heat shock  |2 nationallicence 
690 7 |a Prescribed burning  |2 nationallicence 
690 7 |a Germination  |2 nationallicence 
690 7 |a Australia  |2 nationallicence 
700 1 |a Bargmann  |D Tessa  |u Department of Biology, University of Bergen, Thormøhlensgate 53 A, 5006, Bergen, Norway  |4 aut 
700 1 |a Kirkpatrick  |D Jamie  |u Geography and Spatial Science, School of Land and Food, University of Tasmania, Sandy Bay Campus, 7001, Hobart, Australia  |4 aut 
773 0 |t Biodiversity and Conservation  |d Springer Netherlands  |g 24/2(2015-02-01), 213-228  |x 0960-3115  |q 24:2<213  |1 2015  |2 24  |o 10531 
856 4 0 |u https://doi.org/10.1007/s10531-014-0803-6  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10531-014-0803-6  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Bargmann  |D Tessa  |u Department of Biology, University of Bergen, Thormøhlensgate 53 A, 5006, Bergen, Norway  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kirkpatrick  |D Jamie  |u Geography and Spatial Science, School of Land and Food, University of Tasmania, Sandy Bay Campus, 7001, Hobart, Australia  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biodiversity and Conservation  |d Springer Netherlands  |g 24/2(2015-02-01), 213-228  |x 0960-3115  |q 24:2<213  |1 2015  |2 24  |o 10531