The Species Composition and Habitat Use by Bat Populations in Delta National Forest, Mississippi PDF Download

Author: Lann M. Wilf
Publisher:
ISBN:
Category : Animal populations
Languages : en
Pages : 168

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Author: Frank Richard Thompson
Publisher:
ISBN:
Category : Bats
Languages : en
Pages : 92

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Author: Johnny De Jong
Publisher:
ISBN:
Category : Bats
Languages : en
Pages : 142

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Author: Audrey Lauzon
Publisher:
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Category :
Languages : en
Pages : 0

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The short-term effects of forest harvesting on forest-dwelling bats have received considerable attention. However, knowledge about the long-term effects are also essential to better conserve forest-dwelling bat populations in North America. As vegetation regenerates over time post-harvest, changes created by harvesting (e.g., cutblocks and forest edges) will blur and eventually disappear with natural forest regrowth. Long-term effects of forest harvesting could thus differ from short-term effects on forest-dwelling bat species. To evaluate changes in habitat use by an insectivorous bat community in response to forest harvesting over time, I repeated a study (Grindal and Brigham 1999) conducted near Nelson, British Columbia, Canada. Grindal and Brigham's principal objective was to evaluate bats' use of habitats created by or left after clear-cut logging using acoustic detectors. I revisited the same exact locations 20+ years later to determine how bats use the forest regrowth of these habitats. As was done in 1993-94, I assessed bat community activity and insect community composition (bat prey) in three habitats types (i.e. cutblocks, forest edges, unlogged forests) in combination with different habitat features at landscape and local scales. I found that insect community composition within regenerating cutblocks and along forest edges, when compared to adjacent old-growth forests, showed signs of recovery suggesting the movement of the community towards a new equilibrium. I found that the bat community had modified its use of the same disturbed areas since 1993. My results suggest that clutter and openadapted bats mostly foraged and commuted above the canopy of dense and cluttered forest regrowth of regenerating cutblocks and along the remaining vertical forest edges. I also found that clutter-adapted bats flying within vegetation mainly used old-growth forests to forage and commute. By using a different approach than previous studies my research proposes a time and cost-effective way to enhance our knowledge about changes of bat habitat use over time in a dynamic environment.

Author: Marcia Ann Fox
Publisher:
ISBN:
Category : Bats
Languages : en
Pages : 234

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Author: Thompson
Publisher: CreateSpace
ISBN: 9781507888780
Category : Nature
Languages : en
Pages : 86

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The primary goals of this assessment are to consolidate and synthesize existing information on the status, distribution, conservation, and management considerations for five species of forest bats on national forests in Region 9: Pipistrellus subflavus (eastern pipistrelle), Nycticeius humeralis (evening bat), Myotis austroriparius (southeastern myotis), M. leibii (eastern small-footed myotis), and M. septentrionalis (northern long-eared bat). These species are listed as Regional Forester Sensitive Species on one or more forests of the Eastern Region. The regional forester listing affords protection for a species on the national forests for which it is listed. The forest's goal is to protect and improve the species' habitat where management practices warrant consideration of special habitat needs and to ensure that it does not become threatened or endangered.

Author: Scott Allan Veum
Publisher:
ISBN:
Category :
Languages : en
Pages : 126

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Bats are important components of biodiversity within forested ecosystems. This research addressed habitat characteristics that influence species occupancy and stable isotopes and wing morphology to assess community structure within the Sam D. Hamilton Noxubee National Wildlife Refuge. To meet these objectives, I deployed echolocation recorders, mist-nets and conducted roost checks to capture bat acoustics; fur samples were also collected to measure ratios of carbon (C[13/12]) and nitrogen (N[15/14]). Relationships between occupancy, habitat class and features were not apparent for most species. However, Lasiurus and Mytois spp. showed positive relationships with proximity to roads, Lasiurus, positive with stem density and Perimyotis subflavus, negative with basal area. Stable isotope analysis revealed some distinction of trophic niches while wing morphometrics indicated bats of similar wing shape and size show greater trophic overlap. Collectively, these results suggest that habitat management, as current within the study area, will have limited influence on local bat distributions.

Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 400

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Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.

Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 424

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Author: Darrell Edward Evans
Publisher:
ISBN:
Category : Bats
Languages : en
Pages : 32

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