Michael Durham Photography

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  • A brown phase black bear (Ursus americanus) in a remote canyon of the Nature Conservancy's Zumwalt Prairie Preserve. This bear carries the seeds of houndstongue (Cynoglossum officinale) a non-native invasive weed on its neck and shoulder, thus illustrating the diffculty of weed control once non-native plants are introduced. Photographed at night with a motion sensing camera. Summer 2002
    animal_weed_distribution_MDurham629_...jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-144.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-126.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-139.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-133.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-109.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-115.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-103.jpg
  • Medusahead (Taeniatherum caput-medusae) is a winter annual native to the Mediterranean region of Eurasia. It is one of the primary range weeds in the western United States. It is a serious threat to native grasslands with complex plant communities degraded to a low seral state. Medusahead is an aggressive competitor with other plants including other annuals in native prairies. A low-value forage species for livestock and wildlife, it has been estimated that the carrying capacity of rangeland for livestock and wildlife has been reduced by 75 percent after medusahead invasion.
    medusahead_6911JD2-100.jpg
  • A sing reminds motorists entering Wallowa County in Northeast Oregon to take appropriate measures again invasive and toxic weeds. The weeds pose a hazard to grazing livestock but also disrupt native habitat and displace or eliminate native plants.
    stop_weeds_DurHM210.jpg
  • During a weed survey, preserve ecologist for The Nature Conservancy, Rob Taylor, looks for "the sign of the beast" – patterns that indicate if this plant in a native grass or an invasive weed. Keeping out foreign weeds, and allowing native vegetation to flourish on the Zumwalt Prairie Preserve is a Conservancy priority. (Fully released)
    Prairie_Survey-OR-MRD64-027.jpg
  • Preserve ecologist for The Nature Conservancy, Rob Taylor, inspects grassland plants during a weed survey on  Zumwalt Prairie Preserve. Keeping out foreign weeds, and allowing native vegetation to flourish is a Conservancy priority on the rare grassland. (Fully released)
    Prairie_Survey-OR-MRD64-025.jpg
  • Staff botanist for The Nature Conservancy, Susan Geer, works to distinguish native plants and non-native plants during a weed survey on Zumwalt Prairie Preserve. Bunchgrass prairies may contain thousands of native plants and some weeds as well. Keeping the native plants and eliminating weeds is a priority on the rare grassland.
    Prairie_Survey-OR-MRD64-029.jpg
  • Preserve ecologist for The Nature Conservancy, Rob Taylor, consults with Catherine Parks from the US Forest Service during a weed survey on Zumwalt Prairie Preserve. Keeping out foreign weeds, and allowing native vegetation to flourish is a Conservancy priority on the rare grassland. (Fully released0
    Prairie_Survey-OR-MRD64-028.jpg
  • Preserve ecologist for The Nature Conservancy, Rob Taylor, inspects grassland plants during a weed survey on  Zumwalt Prairie Preserve. Keeping out foreign weeds, and allowing native vegetation to flourish is a Conservancy priority on the rare grassland. (Fully released)
    Prairie_Survey-OR-MRD64-026.jpg
  • Staff botanist for The Nature Conservancy, Susan Geer, works to distinguish native plants and non-native plants during a weed survey on Zumwalt Prairie Preserve. While a seemingly impossible task given the scope of the grassland, preserve employees and volunteers work to keep the prairie as ecologically healthy as possible. (Fully released)
    Prairie_Survey-OR-MRD64-030.jpg
  • A cinnabar moth (Tyria jacobaeae) in flight at the Cascade Head Preserve on the Oregon Coast. The cinnabar moth was first introduced into Oregon in 1960 to control noxious ragwort weeds.  Subsequent research has shown that the cinnabar moth can reduce ragwort populations by 50 - 75% on sites favorable for their survivorship. Adult cinnabar moths begin to emerge in late spring/early summer.  Mating commences quickly, and females lay their eggs on the underside of ragwort leaves.  Larvae hatch in about two weeks and begin feeding on ragwort foliage.  By the third instar, larvae have migrated to the top of the plant to feed on the buds and flowers. With a good population of larvae, plants are stripped of flowers, buds and leaves.
    cinnabar_moth-IMG_4801.jpg
  • (from left to right) Robert Taylor, Phil Shephard, Catherine Parks, and Susan Geer study a map before surveying The Nature Conservancy's Zumwalt Prairie Preserve for non-native and invasive weeds. Keeping foreign plants out, and native plants in, is a Conservancy priority for managing the rare grassland. (Fully released)
    Prairie_Survey-OR-MRD64-024.jpg
  • Cinnabar moth (Tyria jacobaeae) on Tansy ragwort (Senecio jacobaea) at Cascade Head Preserve on the Oregon Coast. The cinnabar moth was first introduced into Oregon in 1960 to contraol non-native, invasive, tansy ragwort.  Subsequent research has shown that the cinnabar moth can reduce ragwort populations by 50-75% on sites favorable for their survivorship (Isaacson and Ehrensing 1977).  Adult cinnabar moths begin to emerge in late spring/early summer.  Mating commences quickly, and females lay their eggs on the underside of ragwort leaves.  Larva hatch in about two weeks and begin feeding on ragwort foliage.  By the third instar, larvae have migrated to the top of the plant to feed on the buds and flowers. With a good population of larvae, plants are stripped of flowers, buds and leaves.
    cinnabar_moth-81912CmSt2.jpg
  • Cinnabar moth (Tyria jacobaeae) caterpillar on Tansy ragwort (Senecio jacobaea) at Cascade Head Preserve on the Oregon Coast. The cinnabar moth was first introduced into Oregon in 1960 to contraol non-native, invasive, tansy ragwort.  Subsequent research has shown that the cinnabar moth can reduce ragwort populations by 50-75% on sites favorable for their survivorship (Isaacson and Ehrensing 1977).  Adult cinnabar moths begin to emerge in late spring/early summer.  Mating commences quickly, and females lay their eggs on the underside of ragwort leaves.  Larva hatch in about two weeks and begin feeding on ragwort foliage.  By the third instar, larvae have migrated to the top of the plant to feed on the buds and flowers. With a good population of larvae, plants are stripped of flowers, buds and leaves.
    cinnabar_moth-81812CM-127.jpg
  • Cinnabar moth (Tyria jacobaeae) caterpillar on Tansy ragwort (Senecio jacobaea) at Cascade Head Preserve on the Oregon Coast. The cinnabar moth was first introduced into Oregon in 1960 to contraol non-native, invasive, tansy ragwort.  Subsequent research has shown that the cinnabar moth can reduce ragwort populations by 50-75% on sites favorable for their survivorship (Isaacson and Ehrensing 1977).  Adult cinnabar moths begin to emerge in late spring/early summer.  Mating commences quickly, and females lay their eggs on the underside of ragwort leaves.  Larva hatch in about two weeks and begin feeding on ragwort foliage.  By the third instar, larvae have migrated to the top of the plant to feed on the buds and flowers. With a good population of larvae, plants are stripped of flowers, buds and leaves.
    cinnabar_moth-81812CM-121.jpg
  • Cinnabar moth (Tyria jacobaeae) on Tansy ragwort (Senecio jacobaea) at Cascade Head Preserve on the Oregon Coast. The cinnabar moth was first introduced into Oregon in 1960 to contraol non-native, invasive, tansy ragwort.  Subsequent research has shown that the cinnabar moth can reduce ragwort populations by 50-75% on sites favorable for their survivorship (Isaacson and Ehrensing 1977).  Adult cinnabar moths begin to emerge in late spring/early summer.  Mating commences quickly, and females lay their eggs on the underside of ragwort leaves.  Larva hatch in about two weeks and begin feeding on ragwort foliage.  By the third instar, larvae have migrated to the top of the plant to feed on the buds and flowers. With a good population of larvae, plants are stripped of flowers, buds and leaves.
    cinnabar_moth-81812CM-109.jpg
  • Cinnabar moth (Tyria jacobaeae) on Tansy ragwort (Senecio jacobaea) at Cascade Head Preserve on the Oregon Coast. The cinnabar moth was first introduced into Oregon in 1960 to contraol non-native, invasive, tansy ragwort.  Subsequent research has shown that the cinnabar moth can reduce ragwort populations by 50-75% on sites favorable for their survivorship (Isaacson and Ehrensing 1977).  Adult cinnabar moths begin to emerge in late spring/early summer.  Mating commences quickly, and females lay their eggs on the underside of ragwort leaves.  Larva hatch in about two weeks and begin feeding on ragwort foliage.  By the third instar, larvae have migrated to the top of the plant to feed on the buds and flowers. With a good population of larvae, plants are stripped of flowers, buds and leaves.
    cinnabar_moth-81812CM-106.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-210.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_113013dd-116.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-169.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-168.jpg
  • Seeds from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-143.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-137.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-112.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_113013dd-110.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-119.jpg
  • Seeds from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-114.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_113013dd-120.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_113013dd-115.jpg
  • A seed from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_113013dd-108.jpg
  • Seeds from a dandelion (Taraxacum officinale) is dispersed by wind in Western Oregon.
    wishing_12313-201.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-24.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-22.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-41.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-4.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-38-V2.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-1V2.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-7.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-63.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-56.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-16.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-10.jpg
  • An old highway in the Columbia River Gorge National Scenic Area, long since abandoned and replaced by nearby I-84.
    abandoned_highway_103007RDm-1.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-379.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-376.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-369.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-357.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-397.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-392.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-383.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-365.jpg
  • An American alligator (Alligator mississippiensis) hidden in pond weed, Florida.
    51515jZ-361.jpg
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