Bat activity on riparian zones and upper slopes in Australian timber production forests and the effectiveness of riparian buffers

Lloyd, Anna; Law, Bradley; Goldingay, Ross L.

doi:10.1016/j.biocon.2005.10.035

Cited by 90 publications

(64 citation statements)

References 54 publications

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“…Topography and its effect on vegetation have been related to bat habitat choice in the previous studies (e.g. Sedgley & O'Donnell 1999; Lloyd et al 2006), but not all . Given that Gould's wattled bats can travel up to 11 km from their roosts to forage (Lumsden et al 2002), it suggests the small-scale habitat variability on site may not be an important factor in influencing collision risk, or that the bats are not using particular routes through the WF (Piorkowski & O'Connell 2010).…”

Section: Discussionmentioning

confidence: 94%

Bat fatalities at two wind farms in Tasmania, Australia: bat characteristics, and spatial and temporal patterns

Hull

Cawthen

2013

New Zealand Journal of Zoology

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Bat carcasses from two wind farms in Tasmania (2002Á2010) were assessed to determine the species, sex, age, reproductive state, morphometrics, presence of food in the gastrointestinal tract, and evidence of spatial and seasonal patterns. Thirty-eight of the 54 carcasses were Gould's wattled bats, with another 14 likely to be, and two Vespadelus sp. All but two were adults, with an equal ratio of females and males. None were actively breeding when found, and five of the six bats tested, had not been recently feeding. Mortalities predominantly occurred in autumn, with a small difference between sites. There was no pattern in the location of carcasses. There appear to be particular ecological, morphological and behavioural characteristics associated with bat collision risk*tree roosting bats with high wing aspect ratios that forage in the open air at high altitude appear to be susceptible. Seasonal patterns may be associated with specific behaviours.

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Section: Discussionmentioning

confidence: 94%

Bat fatalities at two wind farms in Tasmania, Australia: bat characteristics, and spatial and temporal patterns

Hull

Cawthen

2013

New Zealand Journal of Zoology

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“…The second factor is related to a significant reduction of forest-associated clutter, being a serious limitation for aerial hawking species. Although woodlands, especially deciduous ones, are among the most preferred habitats by bats, along with riparian zones (Walsh and Harris 1996;Russ and Montgomery 2002), closer examination reveals that most aerial hawking bats avoid internal parts of dense, intact stands (Rachwald 1992;Lloyd et al 2006). Their activity is negatively correlated with the area of closed canopy (Kusch et al 2004) and density of trees (Erickson and West 2003).…”

Section: Discussionmentioning

confidence: 99%

“…Their activity is negatively correlated with the area of closed canopy (Kusch et al 2004) and density of trees (Erickson and West 2003). In managed forests that are subject to commercial logging, aerial hawkers use either stream corridors (Lloyd et al 2006) or artificial areas of low clutter, which include thinned stands, clear-cuts (Patriquin and Barclay 2003), and trails (Lloyd et al 2006). In unmanaged and unharvested forests, the same group of bats have to use natural canopy gaps that are usually created by the aging of older trees, windthrows, outbreaks of phytophagous insects, and pathogenic fungi (Weiskittel and Hix 2003;Worrall et al 2005).…”

Section: Discussionmentioning

confidence: 99%

“…Bats reveal clear microhabitat preferences, dependent on their foraging tactics. In forests, aerial hawkers hunt mostly in canopy gaps, on glades, in ecotones (Kusch et al 2004), or in corridors formed by streams and trails, which are apparently used as flyways to avoid high clutter (Lloyd et al 2006). Some species prefer calm sections of rivers and avoid those with fast current (Warren et al 2000).…”

Section: Introductionmentioning

confidence: 99%

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Reintroduction of beavers Castor fiber may improve habitat quality for vespertilionid bats foraging in small river valleys

et al. 2010

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Beavers strongly modify their environment by not only building dams and creating ponds, which slow the water flow, but also by selective cutting and removing of trees, which change the spatial structure of the forest. We aimed to test the hypothesis that beaver activity promotes new foraging sites for insectivorous bats. The beaver's influence can be especially significant on aerial hawkers that prefer moderate structural clutter, like the Pipistrellus species (by creating new canopy gaps), and on water-surface foragers, like Myotis daubentonii (by creating ponds with smooth water surface). The study was conducted on small streams in forest areas of northern Poland, which were colonized by the European beaver (Castor fiber). Bat activity was recorded with a Pettersson D-980 ultrasound detector on line transects. The number of bat passes was significantly higher in the stream sections modified by beavers (flooded and subjected to intensive tree cutting) than in the unmodified sections (for Pipistrellus nathusii, Pipistrellus pipistrellus, Pipistrellus pygmaeus, Nyctalus noctula, and all species lumped together). Contrary to our expectations, the activity of the Myotis species was significantly lower on the transect with the largest beaver ponds, possibly due to the blanket of duckweed (Lemnaceae), which is known to produce clutter echoes, thereby reducing prey detection by echolocating M. daubentonii.

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“…Activity on trails in regrowth forest is as high as it is in mature forest. Most importantly, foraging activity is typically much higher on forest trails than within the forest remote from trails or along narrow riparian zones (Law and Chidel 2002;Lloyd et al 2006;Webala et al 2011). Use of trails as linear edges in regenerating forest has also been reported in North America (Menzel et al 2002).…”

Section: Forest Edgementioning

confidence: 99%

Insectivorous Bats and Silviculture: Balancing Timber Production and Bat Conservation

Law

Park

Lacki

2015

Bats in the Anthropocene: Conservation of Bats in a Changing World

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Forests are one of the most important habitats for insectivorous bats as they offer the potential for both roosting and foraging. We reviewed silvicultural literature from North America, Australia, and Europe and found that diverse research approaches have revealed commonalities in bat responses to forest silviculture. Almost all silvicultural treatments evaluated were compatible with some use by forest bats, though different bat ensembles respond in different ways. Ensemble ecomorphology was a consistent predictor of how bats respond to vegetative clutter and its dynamic changes as forests regenerate and develop a dense structure following harvesting. Sustaining high levels of bat diversity in timber production forests requires a mix of silvicultural treatments and exclusion areas staggered across the landscape, regardless of forest type or geographic region. Use of edge habitats, exclusion areas/set-asides, and riparian corridors for roosting and foraging by bats were consistent themes in the literature reviewed, and these habitat elements need to be considered in forest planning. Densities of hollow or dead trees sufficient to support large populations of roosting bats are unknown and remain a major knowledge gap, but will likely be species contingent. New paradigm shifts in forest management away from the use of even-aged systems to multi-spatial scale retention of mature forest including trees with cavities should be beneficial to bats, which are influenced by landscape-scale management. Such

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Bat activity on riparian zones and upper slopes in Australian timber production forests and the effectiveness of riparian buffers

Cited by 90 publications

References 54 publications

Bat fatalities at two wind farms in Tasmania, Australia: bat characteristics, and spatial and temporal patterns

Bat fatalities at two wind farms in Tasmania, Australia: bat characteristics, and spatial and temporal patterns

Reintroduction of beavers Castor fiber may improve habitat quality for vespertilionid bats foraging in small river valleys

Insectivorous Bats and Silviculture: Balancing Timber Production and Bat Conservation

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