Eelgrass (Zostera marina) Percent Cover Data from Katmai National Park and Preserve, Kenai Fjords National Park, and Prince William Sound, Alaska

These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has one comma separated values (.csv) table with estimates of eelgrass (Zostera marina) percent cover. Eelgrass cover was estimated from sonar and video drop cameras deployed from boats following prescribed survey transects.

Categories: Data; Tags: Alaska, Alaska Peninsula, Angiosperms (flowering plants), Animal and plant census, Aquatic Biology, All tags... Biological productivity, Biota, Coastal ecosystems, Ecosystem monitoring, Eelgrass, Environment, Estuarine ecosystems, Gulf of Alaska, Katmai National Park and Preserve, Kenai Fjords National Park, Marine ecosystems, Monocots, Nearshore ecology, Prince William Sound, Relative abundance analysis, Seagrass, Seagrass beds, USGS Science Data Catalog (SDC), Wildlife Biology, Zostera marina, Fewer tags

Katmai National Park and Preserve, Alaska. Volcanic detritus deposit is 3 feet thick on the north end of Takli Island in Amalik Bay.

Katmai National Park and Preserve, Alaska. Volcanic detritus deposit is 3 feet thick on the north end of Takli Island in Amalik Bay. The detritus is probably thicker on the mainland shown in the background. The white bands on the water are of floating pumice. The dark area in the left foreground is clear water. The white streaks on the beach are fine pumice. The rocks are tertiary basalt. August 8, 1912. Photos mgc00625, mgc00626, and mgc00627 form a panorama.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Katmai National Park and Preserve, Alaska. Ash-covered graveyard and church at Kaguyak (var.

Katmai National Park and Preserve, Alaska. Ash-covered graveyard and church at Kaguyak (var. Douglass) village. Grass growing through the ash. July 14, 1912. Photo taken after the June 1912 eruption of Novarupta Volcano.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Katmai National Park and Preserve, Alaska. Ash drifts around a house at Katmai after the June 1912 eruption of Novarupta Volcano.

Katmai National Park and Preserve, Alaska. Ash drifts around a house at Katmai after the June 1912 eruption of Novarupta Volcano. August 13, 1912.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Gulf Watch Alaska Nearshore Component: Sea Otter Aerial Survey Data Katmai National Park and Preserve, 2008-2018

These data are part of the Gulf Watch Alaska (GWA) long term monitoring program, nearshore monitoring component. Specifically, these data describe sea otter (Enhydra lutris) aerial survey observations from the waters around Katmai National Park and Preserve from surveys conducted in 2008, 2012, 2015, and 2018. Sea otters are a keystone predator, well known for structuring the nearshore marine ecosystem through their consumption of invertebrate prey. The dataset consists of 3 comma-delimited files (CSV) exported from Microsoft Excel. The data consists of (1) Strip transect counts, (2) Intensive Search Unit (ISU) counts, and (3) Transect coordinates. For each aerial survey, a pilot flew an airplane at an altitude...

Categories: Data, Data Release - Revised; Tags: Abundance, Aerial survey, Alaska, Animals/Vertebrates, Aquatic Biology, All tags... Aquatic ecosystems, Benthic habitat, Biota, Coastal habitat, Distribution, Ecology, Ecology, Ecosystem monitoring, Enhydra lutris, Environment, Gulf of Alaska, Intertidal environments, Katmai National Park and Preserve, Marine environment monitoring, Marine mammals, Otters, Population dynamics, Sea otters, USGS Science Data Catalog (SDC), Wildlife Biology, Fewer tags

Child Item 3: Rocky Intertidal Invertebrate and Algae Cover from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park

This is a child item of the USGS Data Release: https://doi.org/10.5066/F7513WCB. These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has five comma separated values (.csv) file exported from a Microsoft Access relational database. The data consist of percent cover and point contact data from algae and invertebrates at intertidal rocky substrate sampling sites. Tables include: 1) intertidal cover, 2) intertidal percent cover, 3) intertidal top layer percent cover, 4) intertidal substrate percent cover, and 5) taxonomic classification table. Version History: First release: September 2022 Revised: October 2023 (ver. 2.0) Revised: October 2024...

Categories: Data, Data Release - Revised; Tags: Alaska, Alaska Peninsula, Algae, Algae, Animals/Invertebrates, All tags... Aquatic biology, Aquatic ecosystems, Biospheric indicators, Biota, Community ecology, Ecology, Ecosystem monitoring, Environment, Gulf of Alaska, Intertidal environments, Intertidal zone, Katmai National Park and Preserve, Kenai Fjords National Park, Macroinvertebrates, Marine ecosystems, Marine invertebrates, Mollusks, Nearshore ecology, Prince William Sound, USGS Science Data Catalog (SDC), Wildlife biology, Wildlife disease, Fewer tags

Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 9.0, November 2023)

Comma-separated values (.csv) file containing data related to mercury concentrations in dragonfly samples from U.S. National Parks collected as part of the Dragonfly Mercury Project (DMP). This data release supersedes Eagles-Smith, C.A., Nelson, S.J., Flanagan-Pritz, C.M., Willacker Jr., J.J., and Klemmer, A.J., 2018, Total mercury concentrations in dragonfly larvae from U.S. national parks (ver. 8.0, December 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P9TK6NPT. Please contact fresc_outreach@usgs.gov for access.

Categories: Data, Data Release - Revised; Tags: Acadia National Park, Allegheny Portage Railroad National Historic Site, Amistad National Recreation Area, Apostle Islands National Lakeshore, Appomattox Court House National Historical Park, All tags... Aquatic Biology, Assateague Island National Seashore, Battle Creek Cypress Swamp, Bear Creek Lake Park, Bear Meadows Natural Area, Big Bend National Park, Big Cypress National Preserve, Big Thicket National Preserve, Buffalo National River, Cape Cod National Seashore, Capitol Reef National Park, Carl Sandburg Home National Historic Site, Carlsbad Caverns National Park, Channel Islands National Park, Chattahoochee River National Recreation Area, Chickasaw National Recreation Area, City of Rocks National Reserve, Colorado National Monument, Congaree National Park, Crater Lake National Park, Craters of the Moon National Monument & Preserve, Cuyahoga Valley National Park, Death Valley National Park, Delaware Water Gap National Recreation Area, Denali National Park and Preserve, Devils Tower National Monument, East Inlet Natural Area-Connecticut Lakes Nature Preserve, Ecology, Ell Pond Preserve, Everglades National Park, Fort Larned National Historic Site, Fort Worth Nature Center and Refuge National Natural Landmark, Gateway National Recreation Area, Glacier Bay National Park & Preserve, Glacier National Park, Glen Canyon National Recreation Area, Golden Gate National Recreation Area, Grand Canyon National Park, Grand Portage National Monument, Grand Teton National Park, Great Basin National Park, Great Sand Dunes National Park, Great Smoky Mountains National Park, Gulf Islands National Seashore, Hawaii Volcanoes National Park, Homestead National Monument, Horseshoe Bend National Military Park, Hot Springs National Park, Indiana Dunes National Park, Isle Royale National Park, Jean Lafitte National Historical Park and Preserve, John Day Fossil Beds National Monument, Joshua Tree National Park, Katahdin Woods and Waters National Monument, Katmai National Park and Preserve, Kenai Fjords National Park, Kenilworth Park & Aquatic Gardens, Klondike Gold Rush National Historical Park, Knife River Indian Villages National Historic Site, Lake Clark National Park and Preserve, Lassen Volcanic National Park, Lewis and Clark National Historical Park, Lilley Cornett Woods, Mammoth Cave National Park, Marsh-Billings-Rockefeller National Park, Maurice National Wild and Scenic River, Minute Man National Historical Park, Mississippi National River & Recreation Area, Monocacy National Battlefield, Montezuma Castle National Monument, Mount Rainier National Park, Natchez Trace Parkway and National Scenic Trail, New River Gorge National Park and Preserve, Niobrara National Scenic River, North Cascades National Park, Ocmulgee Mounds National Historical Park, Olympic National Park, Oregon Caves National Monument, Ozark National Scenic Riverway, Padre Island National Seashore, Petersburg National Battlefield, Pictured Rocks National Lakeshore, Pinnacles National Park, Pipestone National Monument, Prince William Forest Park, Pu'ukohola Heiau National Historic Site, Redwood National Park, Richmond National Battlefield Park, Rio Grande Wild & Scenic River, Rock Creek Park, Rocky Mountain National Park, Roosevelt-Vanderbilt National Historic Sites, Saguaro National Park, Saint Croix National Scenic Riverway, Saint-Gaudens National Historic Site, San Juan Island National Historical Park, Santa Monica Mountains National Recreation Area, Sequoia & Kings Canyon National Parks, Shenandoah National Park, Sleeping Bear Dunes National Lakeshore, Sudbury, Assabet & Concord Wild & Scenic Rivers, Tallgrass Prairie National Preserve, Timucuan Ecological Historic Preserve, Tumacacori National Historical Park, Tuzigoot National Monument, USGS Science Data Catalog (SDC), Upper Delaware Scenic and Recreational River, Valles Caldera National Preserve, Voyageurs National Park, Water Quality, Weir Farm National Historical Park, Wekiva Wild & Scenic River, White Mountain National Forest, Wildlife Biology, Wind Cave National Park, Women’s Rights National Historical Park, Yellowstone National Park, Yosemite National Park, Zion National Park, biota, environment, mercury contamination, Fewer tags

Marine Bird and Mammal Survey Data from Kachemak Bay, Katmai National Park and Preserve, and Kenai Fjords National Park

These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset is comprised of six comma separated values (.csv) file exported from a relational database. The data consist of 1) summer marine bird and mammal densities, 2) winter marine bird and mammal densities, 3) summer marine bird and mammal observations, 4) winter marine bird and mammal observations, 5) summer marine bird and mammal survey strip transects, and 6) winter marine bird and mammal survey strip transects. Version History: First release: December 2017 Revised: July 2024 (ver. 2.0)

Categories: Data, Data Release - Revised; Tags: Alaska, Animals/Vertebrates, Biota, Birds, Coastal ecosystems, All tags... Community ecology, Ecology, Ecology, Environment, Environmental proxies, Field inventory and monitoring, Field sampling, Gulf of Alaska, Intertidal zone, Kachemak Bay, Katmai National Park and Preserve, Kenai Fjords National Park, Macroinvertebrates, Mammals, Marine ecosystems, Marine environment monitoring, Marine environments, Marine mammals, Nearshore ecology, Population density, Population trend, Relative abundance, Seabirds, Shorebirds, Spatial distribution, USGS Science Data Catalog (SDC), Wildlife, Wildlife Biology, Fewer tags

Katmai National Park and Preserve, Alaska. Volcanic ash drifts around houses at Katmai after the June 1912 eruption of Novarupta Volcano.

Katmai National Park and Preserve, Alaska. Volcanic ash drifts around houses at Katmai after the June 1912 eruption of Novarupta Volcano. Church in the distant background. August 13, 1912.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Katmai National Park and Preserve, Alaska. View from the north rim of Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta Volcano in June 1912, is a steep-walled, 1.5-kilometer (1 mile) diameter crater which truncates a formerly 2,290-meter (7,513-foot) high stratovolcano.

Katmai National Park and Preserve, Alaska. View from the north rim of Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta Volcano in June 1912, is a steep-walled, 1.5-kilometer (1 mile) diameter crater which truncates a formerly 2,290-meter (7,513-foot) high stratovolcano. The caldera is partially filled by a blue-green lake about 250 meters (820 feet) deep. The lake level was still rising when last measured in the mid-1970's. The south interior wall of the caldera is visible. Photo by R. McGimsey.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Katmai National Park and Preserve, Alaska. Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta Volcano in June 1912, is a steep-walled, 1.5-kilometer (1 mile) diameter crater which truncates a formerly 2,290-meter (7,513-foot) high stratovolcano.

Katmai National Park and Preserve, Alaska. Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta Volcano in June 1912, is a steep-walled, 1.5-kilometer (1 mile) diameter crater which truncates a formerly 2,290-meter (7,513-foot) high stratovolcano. The caldera is partially filled by a blue-green lake about 250 meters (820 feet) deep. The lake level was still rising when last measured in the mid-1970's. The multiple peaks of Trident Volcano are at top left. The lava dome of Novarupta Volcano, which marks the site of the 1912 eruption, is visible at top center. Photo by C. Neal, June 4, 1990.

Categories: Image; Tags: Katmai National Park and Preserve, Neal T., Photographers, Volcanoes, photo print

Lower Valley of 10,000 Smokes. Katmai district, Southwestern Alaska region, Alaska. circa 1922.

Album caption: Lower Valley of 10,000 Smokes Index card: Lower Valley of Ten Thousand Smokes. Katmai National Monument. Katmai district, Southwestern Alaska region, Alaska. n.d.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Katmai National Park and Preserve, Katmai district, Southwestern Alaska region, Alaska, National Parks, Photographers, Smith, W.R. Collection, All tags... photo print, Fewer tags

Child Item 2: Rocky Intertidal Nucella, Lirabuccinum, Katharina, and Lottia Counts from Prince William Sound, Katmai National Park and Preserve, and Kenai Fjords National Park

This is a child item of the USGS Data Release: https://doi.org/10.5066/F7513WCB. These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset has two comma separated values (.csv) file exported from a Microsoft Access relational database. The data consist of 1) counts of Nucella spp., Lottia spp., Lirabuccinum dirum, and Katharina tunicata and 2) a taxonomic classification table. Version History: First release: September 2022 Revised: October 2023 (ver. 2.0) Revised: October 2024 (ver. 3.0)

Categories: Data, Data Release - Revised; Tags: Alaska, Alaska Peninsula, Animals/Invertebrates, Aquatic biology, Aquatic ecosystems, All tags... Benthic, Biospheric indicators, Biota, Chiton, Community ecology, Density, Ecology, Ecology, Ecosystem monitoring, Environment, Gulf of Alaska, Intertidal, Intertidal environments, Intertidal zone, Katharina, Katmai National Park and Preserve, Kenai Fjords National Park, Lirabuccinum, Marine ecosystems, Marine invertebrates, Mollusks, Nearshore ecology, Nucella, Prince William Sound, Snail, USGS Science Data Catalog (SDC), Wildlife biology, Wildlife disease, Fewer tags

Katmai National Park and Preserve, Alaska. Southeast up the Valley of Ten Thousand Smokes, viewed from the Overlook Cabin.

Katmai National Park and Preserve, Alaska. Southeast up the Valley of Ten Thousand Smokes, viewed from the Overlook Cabin. The valley is filled with up to 200 meters (660 feet) of ash-flow deposits from the June 1912 eruption of Novarupta Volcano. The rim of Katmai Caldera is on the left skyline. Photo by R. McGimsey, June 10, 1991.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Katmai National Park and Preserve, Alaska. Part of ash-covered Katmai after the June 1912 eruption of Novarupta Volcano.

Katmai National Park and Preserve, Alaska. Part of ash-covered Katmai after the June 1912 eruption of Novarupta Volcano. August 13, 1912.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Lower part of Valley of 10,000 Smokes. Katmai district, Southwestern Alaska region, Alaska. circa 1922.

Album caption: (same as #109.) Lower part of Valley of 10,000 Smokes. Windy Creek in foreground. Handwritten notes on album caption: Katmai Nat'l Mon. Katmai distict, Southwestern Alaska region, Alaska. n.d. Index card: Lower part of Valley of Ten Thousand Snoeks. Windy Creek in foreground. Katmai National Monument. Katmai district, Southwestern Alaska region, Alaska. n.d.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Katmai National Park and Preserve, Katmai district, Southwestern Alaska region, Alaska, National Parks, Photographers, Smith, W.R. Collection, All tags... photo print, Fewer tags

Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta Volcano in June 1912. Katmai National Park and Preserve, Alaska. 1991.

Katmai National Park and Preserve, Alaska. Katmai Caldera, a collapse feature that formed during the catastrophic eruption of nearby Novarupta Volcano in June 1912, is a steep-walled, 1.5-kilometer (1 mile) diameter crater which truncates a formerly 2,290-meter (7,513-foot) high stratovolcano. The caldera is partially filled by a blue-green lake about 250 meters (820 feet) deep. The lake level was still rising when last measured in the mid-1970's. Beyond the caldera are the multiple peaks of Trident Volcano. Mount Mageik Volcano is the snow and ice-covered cone on the skyline. View is northeast. Photo courtesy of C. Nye, Alaska Division of Geological and Geophysical Surveys, August 1991.

Categories: Image; Tags: Katmai National Park and Preserve, Katmai National Park and Preserve, Alaska, National Parks, Nye C., Photographers, All tags... photo print, Fewer tags

Katmai National Park and Preserve, Alaska. Novarupta lava dome (dark, rounded feature in center), viewed from Mount Katmai, which is surrounded by (clockwise from upper left) Falling Mountain, Baked Mountain, and Broken Mountain.

Katmai National Park and Preserve, Alaska. Novarupta lava dome (dark, rounded feature in center), viewed from Mount Katmai, which is surrounded by (clockwise from upper left) Falling Mountain, Baked Mountain, and Broken Mountain. The Valley of Ten Thousand Smokes, upper right, was created by the June 1912 eruption of Novarupta Volcano. Photo courtesy of C. Nye, Alaska Division of Geological and Geophysical Surveys, August 1991.

Categories: Image; Tags: Katmai National Park and Preserve, Nye C., Photographers, Volcanoes, photo print

Katmai National Park and Preserve, Alaska. Creek cutting a channel in a secondary accumulation of volcanic detritus at the base of a mountain west of Amalik Bay.

Katmai National Park and Preserve, Alaska. Creek cutting a channel in a secondary accumulation of volcanic detritus at the base of a mountain west of Amalik Bay. Successive erosional benches are not due to uplift, but to the varying ratio of volume of water to volume of load. August 10, 1912. Photo taken after the June 1912 eruption of Novarupta Volcano.

Categories: Image; Tags: Katmai National Park and Preserve, National Parks, Volcanoes, photo print

Novarupta volcano eruption from Baked Mountain. Katmai district, Southwestern Alaska region, Alaska. circa 1924.

Album caption: Novarupta from Baked Moutain. Index card: Novarupta Volcano from Baked Mountain. Katmai National Monument. Katmai district, Southwestern Alaska region, Alaska. n.d.

Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Katmai National Park and Preserve, Katmai district, Southwestern Alaska region, Alaska, National Parks, Novarupta volcano, Photographers, All tags... Smith, W.R. Collection, Volcanoes, photo print, Fewer tags