Unregulated pollution by coal mine drainage and industrial effluents decimated the aquatic biota of many streams in western Pennsylvania by the early 1900s ( Ortmann 1909). My results suggest that the Clarion River now supports a substantial mussel population, but additional surveys are needed to provide a baseline for monitoring future recovery. Source populations for recolonization of the river are unknown, but tributaries of the Clarion River are a possibility. undulatus ranged from 2 to 16 yr (mean = 8.0 yr) and length ranged from 26.8 to 81.7 mm (mean = 29.8 mm), suggesting that natural recruitment may be occurring in the river. Ages of a subsample of 60 recently dead S. Relic shells of Actinonaias ligamentina were found at 12 sites, recently dead shells and one living individual of Lampsilis fasciola were found at five sites, and a single recently dead shell of Lampsilis ovata was collected. undulatus were encountered at 146 sites within the study reach. Recently dead shells, weathered shells, or living individuals of S. I conducted qualitative shell surveys from 2007 to 2019 at 157 sites to document past and present mussel distribution along a 55-km reach of the river. In 1993, four living individuals of Strophitus undulatus, the Creeper, were discovered by chance near Clarington, Forest County, which constituted the first documented collection of mussels from the river. By 1911, aquatic life was considered eliminated from the river, but its original mussel fauna was never recorded. In the early 1900s, eight tanneries, 11 wood chemical plants, and a large paper mill operated on the Clarion River, releasing a cumulative 98 million liters of industrial effluent daily, in addition to the discharge of coal-mining wastes. The Clarion River, a tributary of the Allegheny River in northwestern Pennsylvania, underwent heavy industrialization during the late 19th and early 20th centuries.

on Sunday.ДЇor more information, visit the Kenai River Festival 2022 Facebook Page or. Saturday, with the 5-kilometer starting at 9 a.m. Registration, dinner and the bib pickup will be from 5 p.m. In addition to education, the festival will include food and artisan vendors, childrenвЂ™s activities, live music and the annual Run for the River. вЂњWe liked that idea because it helped people enjoy natural resources, but take care of them at the same time,вЂќ he said. Drzazgowski said the added component aligned with a lot of the work the forum does. Anglers had to collect trash to have their fish count toward the competition.

One recent project in particular, he said, was the forumвЂ™s participation in a local halibut fishing tournament. He said a few of those include the organizationвЂ™s involvement with educating high schoolers on invasive species control and salmon fishing and life cycle. вЂњIвЂ™m just excited to see how the community gets together for a bigger event,вЂќ he said.ДЄ big part of the festival will include education, Drzazgowski said, about what kind of stewardship projects are on the horizon for the forum.

Clarion river