Abstract In the early 1980s, a strategy for graphical representation of
multivariate (multi‐species) abundance data was introduced into marine ecology
by, among others, Field, et al. (1982). A decade on, it is instructive to: (i)
identify which elements of this often‐quoted strategy have proved most useful in
practical assessment of community change resulting from pollution impact; and
(ii) ask to... hiện toàn bộ
Meiofauna are ubiquitous in estuaries worldwide averaging 106 m−2. Abundance and
species composition are controlled primarily by three physical factors: sediment
particle size, temperature and salinity. While meiofauna are integral parts of
estuarine food webs, the evidence that they are biologically controlled is
equivocal. Top down (predation) control clearly does not regulate meiofaunal
assembl... hiện toàn bộ
Abstract We propose a method of partitioning the variation in a multivariate set
of data according to (i) environmental variables, (ii) variables describing the
spatial structure in the data and (iii) temporal variables. This method is an
extension of an existing method for partialling out the spatial component of
environmental variation, using canonical analysis. Our proposed method extends
this ... hiện toàn bộ
Data on the species compositions and the ages, sizes, reproductive biology,
habitats and diets of the main species in the ichthyofaunas of seven estuaries
in temperate southwestern Australia have been collated. Twenty‐two species spawn
in these estuaries, of which 21 complete their lifecycles in the estuary. The
latter group, which includes several species of atherinids and gobies with short
lifec... hiện toàn bộ
AbstractThis paper reviews the ecology of soft‐sediment macro‐invertebrates and,
in particular, evaluates how much progress has been made in the recent
literature towards elaborating statistical models of the ecology of these biota
and in using quantitative predictions derived from these models. Steps to
formulating statistical models on the dynamics of populations and assemblages
are discussed. C... hiện toàn bộ
Ross B. Cunningham, David B. Lindenmayer, H. A. Nix, Bruce D. Lindenmayer
An essential pilot study was designed to quantify observer heterogeneity and to
compare observation methods for the detectability of forest birds in stands of
Eucalyptus and Pinus radiata forest as a basis for a major research project on
habitat fragmentation near Tumut, southern New South Wales. Twelve experienced
observers participated in the investigation. Point interval counts, zig‐zag
walks a... hiện toàn bộ
AbstractEstimates of leaf damage by insect herbivores are presented for 25
species of mangrove plants, comprising canopy and understorey species. Leaf area
loss was highly variable among the species sampled, with means ranging from 0.3
to 35.0% of expanded leaf area. There was also great variability amongst leaves
within species, and the mean coefficient of variation for leaf loss from the 25
spec... hiện toàn bộ
AbstractThe study investigated the relationship between home range and food
abundance in a population of the southern brown bandicoot. Isoodon obesulus, in
Western Australia. Home range areas were estimated seven times between 1986 and
1988 by live‐trapping, spool‐and‐line devices and fluorescent pigment tracking.
The abundance of invertebrate food was measured simultaneously by placing
pitfall tr... hiện toàn bộ
Abstract Species of the hypogeous fungus genus. Mesophellia have been shown to
form ectomycorrhiza with Eucalyptus diversicolor and improve seedling growth.
Since the morphology of these fungi increases their dependence on animal
mycophagy for spore dispersal, these results imply a tripartite
interrelationship between eucalypts, hypogeous fungi and marsupials which
parallels the North American int... hiện toàn bộ
An Australian estuary is primarily a marine‐dominated environment, subjected to
major salinity changes only after heavy rains and during flood conditions. In
southeastern Australia estuarine biota are similar to those in shallow coastal
bays and some of the coastal lagoons, and most taxonomic studies on estuarine
fauna have occurred in this region. Several major surveys of estuarine and
coastal ba... hiện toàn bộ