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Now showing items 1-20 of 2233
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Abiotic barriers limit tree invasion but do not hamper native shrub recruitment in invaded stands
(Springer, 2017)The interplay between the invasion of alien plant species and re-colonization of native plant species is important for conservation. Sandy coastal plains (called restinga in Brazil) were used as a model system to explore ... -
About the binomen Cylindropuntia rosea (Cactaceae) and its invasive individuals recorded in the Valencian Community (Spain)
(2013)Cylindropuntia rosea (DC.) Backeb., a name often used to designate the ‘Cardenche’ invasive cactus in the Valencian Community (Spain) is a misapplied binomen in many botanical works. The plants referred under this combination ... -
The absence of fire can cause a lag phase: The invasion dynamics of Banksia ericifolia (Proteaceae)
(2013)The transition from a species introduction to an invasion often spans many decades (a lag phase). However, few studies have determined the mechanisms underlying lag phases. Such a mechanistic understanding is vital if ... -
The absence of keystone indigenous trees inhibits bird recovery up to a decade after invasive tree removal from riparian habitats
(2019)When invasive alien trees are removed, ecosystems are usually left to “self-repair”. Little is known about the extent of recovery or whether plant and animal taxa respond in a similar way. In most cases, the absence of a ... -
ABSTRACT: Acacia saligna’s soil legacy effects persist longer than ten years after clearing
(Elsevier B.V., 2017) -
ABSTRACT: Fragmentation effects and extinction debt in South African fynbos
(Elsevier B.V., 2017) -
ABSTRACT: Reporting on the state of plant invasions in South Africa
(Elsevier B.V., 2017) -
The abundance of an invasive freshwater snail Tarebia granifera (Lamarck, 1822) in the Nseleni River, South Africa
(NISC (Pty) Ltd, 2017)The invasive freshwater snail Tarebia granifera (Lamarck, 1822) was first reported in South Africa in 1999 and it has become widespread across the country, with some evidence to suggest that it reduces benthic macroinvertebrate ... -
The abundance structure of Azorella selago Hook. f. on sub-Antarctic Marion Island: testing the peak and tail hypothesis
(Springer, 2015)Understanding the spatial distribution of organisms and the factors underlying it are key questions in ecology. Two competing hypotheses exist about the form of spatial variation in abundance. The abundant centre hypothesis ... -
Acacia implexa in South Africa: an emerging invader and potential candidate
(2011-01-26)Hons. thesis assessing the potential for eradicating Acacia implexa from South Africa -
Acacia mangium Willd: benefits and threats associated with its increasing use around the world.
(Springer Open, 2019)Background: Acacia mangium, a fast-growing tree native to parts of Indonesia, Papua New Guinea and Australia, has been cultivated outside its native environment and introduced into humid tropical lowland regions of Asia, ... -
Acacia saligna seed banks: Sampling methods and dynamics, Western Cape, South Africa
(Elsevier, 2012)Acacia saligna is potentially the most damaging invasive species in the coastal lowlands of the south-western Cape. The gall rust fungus, Uromycladium tepperianum, has been highly successful as a biological control agent ... -
The acaricidal effect of ethanolic extracts of Chenopodium quinoa Willd. on Tetranychus urticae Koch (Acari: Tetranychidae).
(Entomological Society of Southern Africa, 2016)Ethanolic extracts obtained from the seed coat of Chenopodium quinoa Willd. were evaluated for their acaricidal effect on different stages of the carmine spider mite Tetranychus urticae Koch. At 72 h after application of ... -
Acclimation effects on critical and lethal thermal limits of workers of theArgentine ant, Linepithema humile
(Elsevier Ltd., 2008)For the Argentine ant Linepithema humile, bioclimatic models often predict narrower optimal temperature ranges than those suggested by behavioural and physiological studies. Although water balance characteristics of workers ... -
Acclimation effects on thermal tolerances of springtails from sub-Antarctic Marion Island: Indigenous and invasive species
(Elsevier Ltd., 2007)Collembola are abundant and functionally significant arthropods in sub-Antarctic terrestrial ecosystems, and their importance has increased as a consequence of the many invasive alien species that have been introduced to ... -
Accommodating scenarios of climate change and management in modelling the distribution of the invasive tree Schinus molle in South Africa
(Ecography, 2010)Determining the potential range of invasive alien species under current conditions is important. However, we also need to consider future distributions under scenarios of climate change and different management interventions ... -
Accounting for imperfect observation and estimating true species distributions in modelling biological invasions
(Nordic Society Oikos, 2017)The documentation of biological invasions is often incomplete with records lagging behind the species’ actual spread to a spatio-temporally heterogeneous extent. Such imperfect observation bears the risk of underestimating ...