Hi--
In assessing the possible impacts of a transmission project that is
proposed to pass 150-180' over a wetland/grassland area at the
Kickapoo Valley Reserve http://kvr.state.wi.us/ The site is one of
the top migration areas in the Upper Midwest. The transmission lines
would dangle over two large vernal ponds, one large pond and is
between two large march wetlands 1/4 mile in each direction. The line
would also pass over 20 acres of the least impacted prarie grassland
in the State. (I have data on bird strikes)
I need to prepare a quick assessment of possible impacts on animal
communications of a noise produced from the double circuit 345 kV
high vol from a sample Tom Williams provided me:
Here is a soundfile clip http://tinyurl.com/4f6b3ar (orig, only boosted +12=
dB)
& sonogram http://tinyurl.com/464ufe3
Here's what I could use quick help with if people hav some time:
(1) a sonogram of the above sample that goes higher than 24K Hz
(2) A list of animals whose communications would be compromised by
the presence of this noise based on simple masking or other
principles-- I'm assuming Birds, Bats and mammals. Can people
familiar with bird and bat vocalization Hz content check-off the bird
species they know would be impacted in the list below?
(3) Can someone with bats ad some like species to the list?
=3D =3D =3D =3D
My crude sonogram suggests 7K-24K is has lots of noise saturation
(Tom was on the ground ~150 under the wires in HaldonForest, UK)
The spikes at 11KHz seem to be about 8-10 dB softer than the loudest
element in the environment-- background ambience from distant
traffic, pre-dawn. Based on distant animal calls usually falling
about -8 to -25 dB under the background ambience, the level of the
noise spikes seems to be very significant. I'm not a bird but I would
consider sounds with this much relief to be "screaming" if I heard
them at a disance of about 150 feet.
This is by no means a definitive study, I just want to put the
concern on the table at a meeting tomorrow pm with the developer who
wants to build the transmission line.
Thanks, Rob D.
=3D =3D =3D =3D =3D
List of Birds on the Reserve.
American Bittern
American Coot
American Crow
American Kestrel
American Robin
American Woodcock
Bald Eagle
Baltimore
Bank Swallow
Barn Swallow
Barred Owl
Bay-breasted Warbler
Bell's Vireo
Belted Kingfisher
Black Tern
Black-billed Cuckoo
Blackburnian Warbler
Black-capped Chickadee
Blackpoll Warbler
Black-throated Green Warbler
Blue Jay
Blue-gray Gnatcatcher
Blue-headed Vireo
Blue-winged Teal
Blue-winged Warbler
Bobolink
Bohemian Waxwing
Broad-winged Hawk
Brown Creeper
Brown Thrasher
Brown-headed Cowbird
Bufflehead
Canada Goose
Canada Warbler
Cape May Warbler
Carolina Wren
Cattle Egret
Cedar Waxwing
Cerulean Warbler
Chestnut-sided Warbler
Chimney Swift
Cliff Swallow
Common Grackle
Common Merganser
Common Nighthawk
Cooper's Hawk
Dark-eyed Junco
Dickcissel
Double-crested Cormorant
Eastern Bluebird
Eastern Kingbird
Eastern Phoebe
Eastern Screech-Owl
Eastern Towhee
Eastern Wood-Pewee
European Starling
Field Sparrow
Golden Eagle
Golden-crowned Kinglet
Golden-winged Warbler
Grasshopper Sparrow
Gray Catbird
Gray-cheeked Thrush
Great Blue Heron
Great Crested Flycatcher
Great Egret
Great Horned Owl
Greater Yellowlegs
Green Heron
Gyrfalcon
Hairy Woodpecker
Harris's Sparrow
Henslow's Sparrow
Hermit Thrush
Hooded Merganser
Hooded Warbler
Horned Lark
House Finch
House Sparrow
House Wren
Indigo Bunting
Kentucky Warbler
Killdeer
Least Flycatcher
Lesser Yellowlegs
Lincoln's Sparrow
Long-eared Owl
Magnolia Warbler
Mallard
Marsh Wren
Mourning Dove
Mourning Warbler
Nashville Warbler
Northern Bobwhite
Northern Cardinal
Northern Goshawk
Northern Harrier
Northern Parula
Northern Rough-winged Swallow
Northern Saw-whet Owl
Northern Shoveler
Northern Shrike
Northern Waterthrush
Orange-crowned Warbler
Orchard Oriole
Osprey
Ovenbird
Peregrine Falcon
Philadelphia Vireo
Pied-billed Grebe
Pine Siskin
Pine Warbler
Purple Finch
Red Crossbill
Red-breasted Nuthatch
Red-eyed Vireo
Red-headed Woodpecker
Red-shouldered Hawk
Red-tailed Hawk
Ring-necked Duck
Ring-necked Pheasant
Rock Pigeon
Rough-legged Hawk
Ruby-crowned Kinglet
Ruby-throated Hummingbird
Ruffed Grouse
Sandhill Crane
Sedge Wren
Sharp-shinned Hawk
Snow Bunting
Solitary Sandpiper
Song Sparrow
Sora
Spotted Sandpiper
Swainson's Thrush
Swamp Sparrow
Tennessee Warbler
Tree Swallow
Tufted Titmouse
Tundra Swan
Turkey Vulture
Veery
Vesper Sparrow
Virginia Rail
Warbling Vireo
Whippoorwill
White-breasted Nuthatch
White-crowned Sparrow
White-throated Sparrow
White-winged Crossbill
Wild Turkey
Wilson's Snipe
Wilson's Warbler
Winter Wren
Wood Duck
Wood Thrush
Worm-eating Warbler
Yellow Warbler
Yellow-billed Cuckoo
Yellow-throated Vireo
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