scholarly journals DOONIES: A process-based ecogeomorphological functional community model for coastal dune vegetation and landscape dynamics

Geomorphology ◽  
2021 ◽  
pp. 108037
Author(s):  
Bianca R. Charbonneau ◽  
Adam Duarte ◽  
Todd M. Swannack ◽  
Bradley D. Johnson ◽  
Candice D. Piercy
Keyword(s):  
Landscape Dynamics ◽  
Coastal Dune ◽  
Dune Vegetation ◽  
Functional Community ◽  
Community Model ◽  
Coastal Dune Vegetation

Susceptibility of Plant Species in Coastal Dune Vegetation of South-western Australia to Killing by Armillaria luteobubalina

1998 ◽  
Vol 46 (2) ◽  
pp. 321 ◽  
Author(s):  
B. L. Shearer ◽  
C. E. Crane ◽  
R. G. Fairman ◽  
M. J. Grant
Keyword(s):  
Plant Species ◽  
Western Australia ◽  
Coastal Dune ◽  
Dune Vegetation ◽  
Species Frequency ◽  
Number Of Species ◽  
Coastal Dune Vegetation ◽  
Cross Tabulation

Estimates of the susceptibility of plant species of coastal dune vegetation tokilling by Armillaria luteobubalina Watling & Kilewere obtained from the occurrence of mycelial sheaths of the pathogen beneaththe bark of the root collars of dead plants in 62 disease centres.Dicotyledons (Magnoliopsida) outnumbered monocotyledons (Liliopsida), being81% of the 330 plant species found in disease centres in coastalvegetation. Fifty-one percent of the species were from five Magnoliopsidafamilies with the largest number of species from the Myrtaceae and Proteaceae.Eleven percent of the species were from three Liliopsida families with thelargest number of species from the Cyperaceae. Thirty-four percent of speciesoccurred in three or more disease centres. Thirty-eight percent, or a total of125 of all species, were killed by A. luteobubalina incoastal vegetation. Hosts on which the pathogen did not reach the root collarwould not have been detected. The largest number of species killed were fromthe Proteaceae (26% of species killed) followed by Myrtaceae,Epacridaceae, Papilionaceae and Mimosaceae. Only 6% of species killedwere from the Liliopsida. The distribution of species frequency and thosekilled by infection is positively skewed, with 40% of species notkilled in any centre and 8% killed in greater than 75% of thecentres in which they occurred. The percentage of disease centres in which aspecies occurred and was killed by A. luteobubalina issignificantly linearly correlated with mortality rating and relativeimportance. Cross-tabulation of species by disease centres in which plantswere killed provided the opportunity to classify the relative susceptibilityof plant species to killing by A. luteobubalina.

scholarly journals VegDunes – a coastal dune vegetation database for the analysis of Italian EU habitats

2012 ◽  
Vol 4 ◽  
pp. 191-200 ◽  
Author(s):  
Irene Prisco ◽  
Marta Carboni ◽  
Alicia Teresa Rosario Acosta
Keyword(s):  
Coastal Dune ◽  
Dune Vegetation ◽  
Vegetation Database ◽  
Coastal Dune Vegetation

Adverse effects of non-biodegradable and compostable plastic bags on the establishment of coastal dune vegetation: First experimental evidences

2019 ◽  
Vol 252 ◽  
pp. 188-195 ◽  
Author(s):  
Virginia Menicagli ◽  
Elena Balestri ◽  
Flavia Vallerini ◽  
Alberto Castelli ◽  
Claudio Lardicci
Keyword(s):  
Adverse Effects ◽  
Coastal Dune ◽  
Dune Vegetation ◽  
Plastic Bags ◽  
Coastal Dune Vegetation ◽  
Compostable Plastic

Occurrence of Armillaria luteobubalina and Pathogen-mediated Changes in Coastal Dune Vegetation of South-western Australia

1997 ◽  
Vol 45 (5) ◽  
pp. 905 ◽  
Author(s):  
B. L. Shearer ◽  
C. E. Crane ◽  
R. G. Fairman ◽  
M. J. Grant
Keyword(s):  
Selection Pressure ◽  
Ground Cover ◽  
Coastal Dune ◽  
Susceptible Plant ◽  
Bare Ground ◽  
Dune Vegetation ◽  
Percentage Cover ◽  
Progress Curve ◽  
Coastal Dune Vegetation ◽  
Calcareous Sands

Sixty-two Armillaria luteobubalina Watling & Kiledisease centres were assessed along the coast from near Cervantes, 160 kmnorth-west of Perth, to Cape Arid, 120 km east of Esperance. Disease centresranged from 0.02 to 6.5 ha in size (mean ± s.e., 1.7 ± 0.2 ha).Most disease centres were active, with mainly old deaths occurring in only7% of centres. Impact was low in only 3% of centres. Diseasecentres mainly occurred on calcareous sands of Holocene dune systems.Susceptible hosts from the Proteaceae, Mimosaceae and Myrtaceae tended to bedominant small trees or shrubs and their death resulted in centres composedmainly of sedges or small shrubs and ground-cover species from a range offamilies. Percentage cover of susceptible plant species was significantly lessin disease centres than adjacent healthy areas. Cover of resistant speciestended to be greater in disease centres than adjacent healthy areas, althoughdifferences were not significant. In association with changes in communitystructure, infection resulted in more bare ground in disease centres thanamongst healthy vegetation. Infection had minimal effect on species richness.The mortality progress curve for the susceptible speciesDryandra sessilis (Knight) Domin increased at a meanapparent infection rate of 0.31 ± s.e. 0.12year-1. A disease centre extended at the rate of 0.004ha year-1 between 1964 and 1983 and 0.07 hayear-1 during the period 1981–1989. Diseaseextension per year was not correlated with yearly rainfall. Threatened taxakilled by A. luteobubalina included the rare andendangered Banksia brownii Baxter ex R.Br.,B. occidentalis R.Br. subsp.formosa Hopper, andB. verticillata R.Br. This is the first report ofdisease significantly altering the structure and composition of coastalvegetation of south-western Australia.Armillaria luteobubalina is a significant additional,and hitherto unrecognised, selection pressure on coastal dune vegetationcommunities, and an important consideration in their management andconservation.

Sign in / Sign up

Export Citation Format

Share Document