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Biological information on other lamprey species such as Sea Lamprey, River Lamprey, etc.
An adult Pacific lamprey (Lampetra tridentata) escapement estimate was generated in the lower Deschutes River during run year 2008. This included a mark-recapture study to determine adult abundance and a tribal subsistence creel. Fish measuring less than 10.5 cm received two marks for the mark-recapture estimate while those measuring greater than 10.5 cm were surgically implanted with radio transmitters to monitor migration upstream of Sherars Falls (rkm 70.4). Radio telemetry was used to determine habitat, focal spawning areas and spawn timing. All fish were collected at the Sherars Falls fish ladder from July – October 2008 using a long handled dip-net. Escapement was generated using a two event mark-recapture...
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This layer represents areas which have been proposed (per the requirements of Section 368 of the Energy Policy Act of 2005) as West-wide energy corridors for the final "Programmatic Environmental Impact Statement, Designation of Energy Corridors on Federal Land in the 11 Western States", November 2008. The layer was intersected with surface management agency, BLM field office, and state layers to add more tabular attributes.
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In an effort to forecast impacts of future climate change on North American birds, the National Audubon Society has generated a large set of spatial data to characterize climate suitability for individual bird species through time (2000, 2020, 2050, 2080) and across Intergovernmental Panel on Climate Change (IPCC) emissions scenarios (B2, A1B, A2) for both winter and summer seasons. These data offer broad spatial and temporal perspective on how species distributions may be influenced by climate change. They can be combined with knowledge of bird biology and other sources of spatial information to inform conservation planning, management, and communication about climate change effects on birds.
Predators are a known detriment to beach nesting birds at Cape May National Wildlife Refuge. Although the refuge regularly contracts with USDA to provide 2 weeks of predator trapping, predators historically move onto the refuge throughout a breeding season and detrimentally affect the beach nesting birds when contract work has already been spent or USDA is unavailable to get out to specific sites. In recent years, this has resulted in low productivity. Funding is requested to implement more adaptive predation management efforts through either increased trapping duration, and/or to purchase trapping and control supplies for refuge staff, and to purchase supplies to trap and control ghost crabs.
Moose are vitally important to Alaska’s subsistence and recreational hunters, wildlife viewers, and economy. Both the State of Alaska and federal government are mandated to manage moose populations. Specific information needs vary across the state, but the ability to monitor the size, trend, and composition of moose populations is fundamental to sound scientific management. Moose population monitoring (including measures of abundance, composition, and trend) in Alaska routinely involve aerial surveys flown in the fall and early winter, prior to antler drop, when sexes can be distinguished. These surveys rely on complete snow cover to optimize sightability. Over the past decade, delayed onset of snowfall has crippled...
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This is the YKD egg observation data summarized into yearly stats on mean initiation and hatch dates for various species. This file is produced from the R code eggs.R.
NatureServe update of Nature’s Network’s Imperiled Species Cores using new Map of Biodiversity Importance (MoBI) modeling methodology. For more information on MoBI visit https://www.natureserve.org/map-biodiversity-importance.
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This product contains the transcribed count data from the Alaska Izembek Winter Brant Survey. These data were produced from transcribed georeferenced voice recordings using customized software developed by John Hodges (Program Record, Program Transcribe).
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Between September and November each year, nearly the entire world population of Pacific black brant (Branta bernicla nigricans) stages at Izembek Lagoon and surrounding estuaries (hereafter: Izembek Complex). The Izembek Complex is a unique area of protected brackish waters, supporting one of the world’s largest eelgrass beds and a diverse array of wildlife. The Alaska Fall Brant Survey has been conducted annually since 1976 in late-September through October, to provide an index of abundance for the entire post-breeding Pacific black brant population (Branta bernicla nigricans), while secondarily, providing annual fall population indices for cackling geese (Branta hutchinsii), emperor geese (Anser canagicus), and...
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The daily boat tracks of the 2000-2002 winter skiff-based double-sampling surveys were recorded to an onboard computer using the custom survey software RECORD (John I. Hodges, FWS-MBM-Alaska, retired). The tracks were recorded by capturing the skiff’s location from a GPS every five seconds as long as the software was running. The software was started at some time between the boat’s engine start and the start of the survey, and was shut down at some time between the end of the survey and engine shut-down. The tracks may thus include the boat’s travel to and from the home base. Note that the 2001 boat tracks are missing.
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The Alaska Trumpeter Swan Survey was an aerial survey conducted by the U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Alaska Region (MBM-AK) and partners to monitor the status of trumpeter swans (Cygnus buccinator) in Alaska. It was first conducted in 1968 and then repeated at five-year intervals from 1975 through 2015. The objectives of the survey were to estimate the abundance, distribution (1968–2005 only), and productivity of trumpeter swans in late summer, when the swans were dispersed on breeding territories and cygnets were large enough to be easily counted from the air. Estimates were obtained for the abundance of white swans (swans >1 year old), cygnets, and total swans, as well...
map background search result map search result map West-wide energy corridors Audubon Bird-Climate Models Mean initiation and hatch from Egg Data 1985 - 2019 Alaska Izembek Brant Winter Aerial Survey Raw Observations 2012-Present Alaska Izembek Fall Brant Aerial Survey 1976-Present Southeast Alaska Nearshore Winter Boat Tracks 2000 and 2002 Alaska Trumpeter Swan Survey 1986-2015 Alaska Boreal Chickadee Banding Data 2022-Present Alaska Izembek Fall Brant Aerial Survey 1976-Present Alaska Izembek Brant Winter Aerial Survey Raw Observations 2012-Present Mean initiation and hatch from Egg Data 1985 - 2019 Southeast Alaska Nearshore Winter Boat Tracks 2000 and 2002 Alaska Boreal Chickadee Banding Data 2022-Present Alaska Trumpeter Swan Survey 1986-2015 West-wide energy corridors Audubon Bird-Climate Models