Use of Roost Sites by Four Species of Bats in State Forest in South-Eastern Tasmania.

1988 ◽  
Vol 15 (6) ◽  
pp. 637 ◽  
Author(s):  
RJ Taylor ◽  
NM Savva
Keyword(s):  
Maximum Distance ◽  
One Dimension ◽  
Forest Patches ◽  
Factors Associated ◽  
South Eastern ◽  
Mature Forest ◽  
Eucalypt Forest ◽  
Large Size ◽  
Eucalyptus Forest ◽  
Large Trees

Roosting requirements and movements between foraging areas and roost sites were studied in Eptesicus regulus, E. sagittula, Chalinolobus morio and Nyctophilus geoffroyi in an area of artificially regenerated eucalypt (Eucalyptus) forest surrounded by mature eucalypt forest. Movements between traps and roost sites were normally about 1 km, with the maximum distance recorded being 4.8 km for a female N. geoffroyi. Different species of eucalypts were used as roost sites in proportion to their occurrence in the forest. However, large trees over 80 cm d.b.h. were favoured. There was no tendency to avoid roost sites close to the ground. Spaces used as roost sites had one dimension little greater than the bat itself. Five types of roost sites were distinguished: in fissures, inside burnt-out boles, in hollows, under bark and on the ground. Individuals changed roost sites frequently but roosts used by any one individual were in the same general vicinity. The factors associated with production of roost sites in trees were: large size, overmaturity, death, rot and fire. No bats were found to roost in regenerated forest. Patches of mature forest will need to be retained to ensure a shortage of roosts does not occur as more areas of mature forest are converted to production forest.

scholarly journals Biomass and Soil Carbon Stocks in Wet Montane Forest, Monteverde Region, Costa Rica: Assessments and Challenges for Quantifying Accumulation Rates

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Lawrence H. Tanner ◽  
Megan T. Wilckens ◽  
Morgan A. Nivison ◽  
Katherine M. Johnson
Keyword(s):  
Costa Rica ◽  
Soil Carbon ◽  
Secondary Forest ◽  
Cloud Forest ◽  
Montane Forest ◽  
Carbon Stocks ◽  
Age Difference ◽  
Biomass Carbon ◽  
Mature Forest ◽  
Large Trees

We measured carbon stocks at two forest reserves in the cloud forest region of Monteverde, comparing cleared land, experimental secondary forest plots, and mature forest at each location to assess the effectiveness of reforestation in sequestering biomass and soil carbon. The biomass carbon stock measured in the mature forest at the Monteverde Institute is similar to other measurements of mature tropical montane forest biomass carbon in Costa Rica. Local historical records and the distribution of large trees suggest a mature forest age of greater than 80 years. The forest at La Calandria lacks historical documentation, and dendrochronological dating is not applicable. However, based on the differences in tree size, above-ground biomass carbon, and soil carbon between the Monteverde Institute and La Calandria sites, we estimate an age difference of at least 30 years of the mature forests. Experimental secondary forest plots at both sites have accumulated biomass at lower than expected rates, suggesting local limiting factors, such as nutrient limitation. We find that soil carbon content is primarily a function of time and that altitudinal differences between the study sites do not play a role.

Impact of distance to mature forest on the recolonisation of bryophytes in a regenerating Tasmanian wet eucalypt forest

2013 ◽  
Vol 61 (8) ◽  
pp. 633 ◽  
Author(s):  
Thomas P. Baker ◽  
Gregory J. Jordan ◽  
Patrick J. Dalton ◽  
Susan C. Baker
Keyword(s):  
Edge Effect ◽  
Dispersal Distance ◽  
Mature Forest ◽  
Eucalypt Forest ◽  
Native Forests ◽  
Disturbed Areas ◽  
Disturbed Forest ◽  
Microclimate Conditions ◽  
Ideal Group

Forest influence is a type of edge effect that occurs when mature forests affect the recolonisation of adjacent disturbed areas. This can be driven by changes in microclimate conditions near the edge or by an increase in establishment ability with proximity to a propagule source. Bryophyte recolonisation is sensitive to both microclimate and dispersal distance, therefore they are an ideal group to examine how strong forest influence is and over what distance it operates. Responses to forest influence are known to be highly species dependent; therefore, we tested whether distance affects the recolonisation ability of a range of bryophytes. As well as examining a range of species, we tested whether forest influence operated differently on two types of substrate used by bryophytes (logs and ground). For most of the species examined, establishment rates in disturbed forest diminished further away from the mature edge. The influence of unlogged mature forest on bryophyte establishment in harvested forest occurred up to 50 m. Species varied in their response to distance, and the relationships with distance were stronger on the ground compared with log substrates. These results support the concept of forest influence, with areas closer to mature forest experiencing more substantial re-establishment. These findings are relevant to conservation of bryophytes in managed native forests.

Morphometric variation and taxonomic status of brush-tailed phascogales, Phascogale tapoatafa (Meyer, 1793) (Marsupialia: Dasyuridae)

2001 ◽  
Vol 49 (4) ◽  
pp. 345 ◽  
Author(s):  
S. G. Rhind ◽  
J. S. Bradley ◽  
N. K. Cooper
Keyword(s):  
Western Australia ◽  
Function Analysis ◽  
Taxonomic Status ◽  
Morphometric Variation ◽  
South Eastern ◽  
Large Size ◽  
South Wales ◽  
Eastern Australia ◽  
Teat Number ◽  
Significant Size

This study details morphometric variation among the marsupial brush-tailed phascogale, Phascogale tapoatafa. The validity of phascogales from south-western and south-eastern Australia being classified as the single subspecies P. t. tapoatafa was questioned because of the substantial isolation of the south-west population; the northern Australian subspecies P. t. pirata was included in the inquiry. Discriminant function analysis performed on 18 skull characteristics (n = 50 skulls) produced separation between P. t. pirata, south-western P. t. tapoatafa, and south-eastern P. t. tapoatafa. Separation was also achieved between female phascogales from Victoria and those from New South Wales and southern Queensland, but not between the males of these two populations. Univariate tests identified significant size differences between the groups. Field data gathered on wild P. t. tapoatafa illustrate large size differences between phascogales of Victoria and south-western Australia. Phascogales from south-western Australia also exhibit a polymorphism in teat number (6, 7 or 8 teats; n = 72) that is not observed in other phascogales. This isolated population may represent a distinct taxon.

Modern Pollen Rain From Forest Communities on the Robertson Plateau, New-South-Wales

1990 ◽  
Vol 38 (1) ◽  
pp. 1 ◽  
Author(s):  
PG Kodela
Keyword(s):  
New South ◽  
New South Wales ◽  
Plant Distribution ◽  
Modern Pollen ◽  
Eucalypt Forest ◽  
Eucalyptus Forest ◽  
South Wales ◽  
Open Ground ◽  
Pollen Rain ◽  
Pollen Distribution

The modern pollen spectra for Eucalyptus forest and rainforest communities were investigated from 19 sites in the Robertson area on the Central Tablelands of New South Wales. Cluster and discriminant analyses were applied to analyse pollen distribution from within and from outside warm temperate rainforest stands and tall open eucalypt forest stands. Pollen abundance is compared with a number of plant abundance estimates of taxa within forests to study pollen representation at the forest scale. Pollen of Doryphora, Polyosma, Pittosporum, Hymenanthera, Tasmannia, Asclepiadaceae and most rainforest taxa investigated are poorly represented, while sclerophyll and open-ground taxa, particularly Eucalyptus, are better represented. The pollen of many native taxa do not appear to be well dispersed, and local pollen is commonly outweighed by pollen from regional sources. Pollen representation varied between taxa and sites, with factors such as vegetation structure, plant distribution, topography and disturbance influencing pollen representation.

Impact of fire regimes, logging and topography on hollows in fallen logs in eucalypt forest of south eastern Australia

2012 ◽  
Vol 149 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Luke Collins ◽  
Ross A. Bradstock ◽  
Elizabeth M. Tasker ◽  
Robert J. Whelan
Keyword(s):  
Fire Regimes ◽  
South Eastern ◽  
Eucalypt Forest ◽  
Eastern Australia ◽  
South Eastern Australia

Hypogeal fungi in the diet of the long-nosed potoroo (Potorous tridactylus) in mixed-species and regrowth eucalypt forest stands in south-eastern Australia

1993 ◽  
Vol 20 (3) ◽  
pp. 321 ◽  
Author(s):  
AW Claridge ◽  
MT Tanton ◽  
RB Cunningham
Keyword(s):  
Fungal Species ◽  
Forest Site ◽  
South Eastern ◽  
Percentage Occurrence ◽  
Eucalypt Forest ◽  
Faecal Analysis ◽  
Eastern Australia ◽  
Autumn And Winter ◽  
Potorous Tridactylus ◽  
South Eastern Australia

The diet of the long-nosed potoroo (Potorous tridactylus), a medium-sized ground-dwelling marsupial, was monitored (using faecal analysis) in a multiaged eucalypt forest site, and a regrowth eucalypt forest site in south-eastern Australia. In the multiaged forest P. tridactylus was primarily mycophagous, consuming the sporocarps (fruiting bodies) of at least 58 fungal species. Most of these taxa were hypogeal (underground fruiting) basidiomycetes thought to form mycorrhizae on the roots of a variety of plants. The percentage occurrence of fungus in faeces decreased in spring and summer and increased in autumn and winter. This pattern was opposite to the changing occurrence in faeces of other food types, and the percentage occurrence of spores of a major fungus species. At the regrowth forest site the quantity of fungus in faeces of P. tridactylus was lower but more constant over time. There were also differences in the percentage occurrence of spores of at least two fungal species. Additionally, the diversity of fungal taxa found as spores in faeces at the regrowth site was significantly lower (on average) than that recorded in faeces from the multiaged site. Differences in the fungal diets of the two P. tridactylus populations may be partially attributable to the disturbance (fire and logging) histories of each site.

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