Geodatabase of streams, wetlands, and amphibian observation points in National Capitol Region parks.

This data release contains information collected during surveys for chorus fogs (Pseudacris maculata), wood frogs (Lithobates sylvaticus) and tiger salamanders (Ambystoma mavortium ) conducted in Rocky Mountain National Park (1986 – 2022) by the U.S. Geological Survey. Survey methods included visual encounter and aural surveys, and dip netting. Data collected between 1986 and 1994 focused on named water bodies in Rocky Mountain National Park. Data collected between 1995 and 1999 are from focal monitoring sites as well as sporadic surveys of other wetlands. Data collected between 2000-2002 represent repeated surveys conducted between 1986 and 1994 (e.g., park-wide surveys of named water bodies) and additional surveys of unnamed waterbodies. Data collected after 2002 were collected under an occupancy framework. Sites were identified within pre-defined catchments using the National Wetlands Inventory Database to locate potential amphibian breeding habitat (e.g., ponds, ephemeral wetlands). If appropriate sites were encountered in the field and were not indicated on National Wetland Inventory databases (https://www.fws.gov/program/national-wetlands-inventory/metadata), they were added as incidental sites. Waterbodies were visited and surveyed at least two times during the amphibian active season (May and mid-August). Water bodies were surveyed for all life stages of amphibians.

This data release contains information collected during surveys for chorus fogs (Pseudacris maculata), wood frogs (Lithobates sylvaticus) and tiger salamanders (Ambystoma mavortium ) conducted in Rocky Mountain National Park (1986 – 2022) by the U.S. Geological Survey. Survey methods included visual encounter and aural surveys, and dip netting. Data collected between 1986 and 1994 focused on named water bodies in Rocky Mountain National Park. Data collected between 1995 and 1999 are from focal monitoring sites as well as sporadic surveys of other wetlands. Data collected between 2000-2002 represent repeated surveys conducted between 1986 and 1994 (e.g., park-wide surveys of named water bodies) and additional surveys of unnamed waterbodies. Data collected after 2002 were collected under an occupancy framework. Sites were identified within pre-defined catchments using the National Wetlands Inventory Database to locate potential amphibian breeding habitat (e.g., ponds, ephemeral wetlands). If appropriate sites were encountered in the field and were not indicated on National Wetland Inventory databases (https://www.fws.gov/program/national-wetlands-inventory/metadata), they were added as incidental sites. Waterbodies were visited and surveyed at least two times during the amphibian active season (May and mid-August). Water bodies were surveyed for all life stages of amphibians.

This data set is comprised of four files related to the counts of amphibian species in the National Capital Region of the United States. Data was obtained from surveys of both lentic (wetland) and lotic (stream) sites within national parks.

This data set is comprised of four files related to the counts of amphibian species in the National Capital Region of the United States. Data was obtained from surveys of both lentic (wetland) and lotic (stream) sites within national parks.

Amphibian survey in streams within North Cascades National Park tabular data, 1996-2004. To obtain baseline data on the abundance and distribution of stream obligate amphibian species in the North Cascades National Park Service Complex, particularly Ascaphus truei and Dicamptodon tenebrosus. To evaluate the environmental factors affecting the distribution of stream amphibians. These objectives will assist in the development of long-term monitoring protocols for stream amphibians We sampled 168 stream segments from nine watersheds in North Cascades National Park Service Complex during two inventory efforts conducted from 1996-1998 and 2003-2004. Surveys entailed stream habitat characterizations such as stream channel and flow measurements, vegetation and canopy cover measurements, and stream substrate classification. as well as sampling for stream amphibians. When found, amphibians were photographed, classed into age/lifestage categories and a variety of body size measurements were taken. No voucher specimens were collected.

Amphibian survey in streams within North Cascades National Park tabular data, 1996-2004. To obtain baseline data on the abundance and distribution of stream obligate amphibian species in the North Cascades National Park Service Complex, particularly Ascaphus truei and Dicamptodon tenebrosus. To evaluate the environmental factors affecting the distribution of stream amphibians. These objectives will assist in the development of long-term monitoring protocols for stream amphibians We sampled 168 stream segments from nine watersheds in North Cascades National Park Service Complex during two inventory efforts conducted from 1996-1998 and 2003-2004. Surveys entailed stream habitat characterizations such as stream channel and flow measurements, vegetation and canopy cover measurements, and stream substrate classification. as well as sampling for stream amphibians. When found, amphibians were photographed, classed into age/lifestage categories and a variety of body size measurements were taken. No voucher specimens were collected.

Amphibian survey tabular data for San Juan Island National Historical Park 2002. Fourteen surveys were conducted at American Camp and 15 surveys at English Camp. We confirmed the presence of two species in SAJH in this inventory: northern red-legged frog and Pacific treefrog. Amphibian habitat is sparse on San Juan Island and within SAJH, one of the driest parks in the NCCN, with only one permanent pond located at American Camp and no perennial streams. This inventory was conducted during April 2002 and when surveys were initiated, many areas were already too dry to support amphibians. Species absence is extremely difficult to determine and it is possible that some species recorded historically or occasionally but not detected during our survey efforts may still be present in the park. Additional surveys of targeted habitats and species should be conducted. This project at San Juan Island National Historical Park (SAJH) was part of a larger effort to document species presence at five North Coast and Cascades Network (NCCN) parks: Mount Rainier National Park, Ebey’s Landing National Historical Reserve, Lewis and Clark National Historical Site, Fort Vancouver National Historic Site, and SAJH. Four parks (EBLA, FOCL, FOVA, and SAJH) had incomplete amphibian lists based on limited or undocumented data. Our primary goal was to meet the National Park Service Inventory and Monitoring program goal to better assess the status of amphibian species listed as “expected” in the parks and to verify the occurrence of 90% of these species. Species occurrences were documented or verified by written records and photographs; no specimens were collected in this inventory. Prior to this inventory, SAJH had no verified list of amphibians or reptiles occurring in the park, however a wetland study conducted by Holmes (1998) documented incidental observations of two frog species. Additional searches of museum specimens and state records have not been completed.Our primary goal for SAJH was to search for the presence of expected species: Ensatina, western red-backed salamander, northern red-legged frog, Oregon spotted frog, American bullfrog, Pacific treefrog, and western toad. Inventories of reptiles were not targeted during this project; however they were documented when encountered.One voucher photograph was taken for the northern red-legged frog observation. Voucher specimens for amphibians and reptiles exist for many NCCN species in various park collections and at other institutions. These collections, along with new data provided through this inventory, represent an historic amphibian collection for additional research in the future.

Amphibian survey tabular data for San Juan Island National Historical Park 2002. Fourteen surveys were conducted at American Camp and 15 surveys at English Camp. We confirmed the presence of two species in SAJH in this inventory: northern red-legged frog and Pacific treefrog. Amphibian habitat is sparse on San Juan Island and within SAJH, one of the driest parks in the NCCN, with only one permanent pond located at American Camp and no perennial streams. This inventory was conducted during April 2002 and when surveys were initiated, many areas were already too dry to support amphibians. Species absence is extremely difficult to determine and it is possible that some species recorded historically or occasionally but not detected during our survey efforts may still be present in the park. Additional surveys of targeted habitats and species should be conducted. This project at San Juan Island National Historical Park (SAJH) was part of a larger effort to document species presence at five North Coast and Cascades Network (NCCN) parks: Mount Rainier National Park, Ebey’s Landing National Historical Reserve, Lewis and Clark National Historical Site, Fort Vancouver National Historic Site, and SAJH. Four parks (EBLA, FOCL, FOVA, and SAJH) had incomplete amphibian lists based on limited or undocumented data. Our primary goal was to meet the National Park Service Inventory and Monitoring program goal to better assess the status of amphibian species listed as “expected” in the parks and to verify the occurrence of 90% of these species. Species occurrences were documented or verified by written records and photographs; no specimens were collected in this inventory. Prior to this inventory, SAJH had no verified list of amphibians or reptiles occurring in the park, however a wetland study conducted by Holmes (1998) documented incidental observations of two frog species. Additional searches of museum specimens and state records have not been completed.Our primary goal for SAJH was to search for the presence of expected species: Ensatina, western red-backed salamander, northern red-legged frog, Oregon spotted frog, American bullfrog, Pacific treefrog, and western toad. Inventories of reptiles were not targeted during this project; however they were documented when encountered.One voucher photograph was taken for the northern red-legged frog observation. Voucher specimens for amphibians and reptiles exist for many NCCN species in various park collections and at other institutions. These collections, along with new data provided through this inventory, represent an historic amphibian collection for additional research in the future.

This data set contains information on detections of anuran (i.e., frogs and toads) species at six different management areas in the midwestern United States from 2002 to 2012. From 2002 to 2005 anuran communities were surveyed during the day using multiple methods at individual study wetlands—visual encounter surveys, dip net surveys, and calling surveys using multiple observers in most cases. Data are presented from each survey. From 2008 to 2012 amphibian communities were surveyed through detections of vocalizing anurans recorded by automated recording units. Automated recording units recorded five minutes at the top of every hour for the entire field season (typically April through October). Recorder data are presented for up to 15 confirmed detection dates per site per species. Original raw acoustic recordings used to create this data table are archived at the Upper Midwest Environmental Science Center.